Westpac Banking (WEBNF) 20-F 6 Nov 19 2019 FY Annual report (foreign) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Sep. 30, 2019shares
Document and Entity Information
Entity Registrant Name	WESTPAC BANKING CORP
Document Type	20-F
Document Period End Date	Sep. 30, 2019
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	3,489,928,773
Entity Central Index Key	0000719245
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false

Income statements

Income statements - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Interest income:
Calculated using the effective interest rate method	[1]	$ 32,518	$ 31,987	$ 30,614
Other	[1]	704	584	618
Total interest income	[1]	33,222	32,571	31,232
Interest expense	[1]	(16,315)	(16,066)	(15,716)
Net interest income	[1]	16,907	16,505	15,516
Net fee income	[1]	1,655	2,424	2,603
Net wealth management and insurance income	[1]	1,029	2,061	1,800
Trading income	[1]	929	945	1,202
Other income	[1]	129	72	529
Net operating income before operating expenses and impairment charges	[1]	20,649	22,007	21,650
Operating expenses	[1]	(10,106)	(9,566)	(9,282)
Impairment charges	[1]	(794)	(710)	(853)
Profit before income tax	[1]	9,749	11,731	11,515
Income tax expense	[1]	(2,959)	(3,632)	(3,518)
Net profit for the year	[1]	6,790	8,099	7,997
Net profit attributable to non-controlling interests	[1]	(6)	(4)	(7)
Net profit attributable to owners of Westpac Banking Corporation	[1]	$ 6,784	$ 8,095	$ 7,990
Earnings per share
Basic (in dollars per share)	[1]	$ 1.965	$ 2.375	$ 2.380
Diluted (in dollars per share)	[1]	$ 1.895	$ 2.301	$ 2.293
Parent Entity
Interest income:
Calculated using the effective interest rate method	[1]	$ 32,736	$ 32,190
Other	[1]	776	640
Total interest income	[1]	33,512	32,830
Interest expense	[1]	(19,295)	(18,977)
Net interest income	[1]	14,217	13,853
Net fee income	[1]	922	2,172
Trading income	[1]	956	919
Other income	[1]	2,684	2,633
Net operating income before operating expenses and impairment charges	[1]	18,779	19,577
Operating expenses	[1]	(8,631)	(8,000)
Impairment charges	[1]	(750)	(682)
Profit before income tax	[1]	9,398	10,895
Income tax expense	[1]	(2,277)	(2,751)
Net profit for the year	[1]	7,121	8,144
Net profit attributable to owners of Westpac Banking Corporation	[1]	$ 7,121	$ 8,144
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Statements of comprehensive inc

Statements of comprehensive income - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019		Sep. 30, 2018	Sep. 30, 2017
Statements of comprehensive income
Net profit for the year	[1]	$ 6,790		$ 8,099	$ 7,997
Gains/(losses) recognised in equity on:
Available-for-sale securities			[1]	(102)	75
Debt securities measured at fair value through other comprehensive income (FVOCI)		(46)	[1]
Cash flow hedging instruments		(203)	[1]	(161)	(91)
Share of associates' other comprehensive income			[1]		3
Transferred to income statement
Available-for-sale securities			[1]	66	(3)
Debt securities measured at FVOCI		(29)	[1]
Cash flow hedging instruments		197	[1]	203	115
Foreign currency translation reserve		(10)	[1]	(3)
Share of associates' other comprehensive income			[1]		9
Exchange differences on translation of foreign operations (net of associated hedges)		182	[1]	181	(116)
Income tax on items taken to or transferred from equity:
Available-for-sale securities reserve			[1]	9	(18)
Debt securities measured at FVOCI		20	[1]
Cash flow hedge reserve		2	[1]	(13)	(6)
Items that will not be reclassified subsequently to profit or loss (net of tax)
Gains/(losses) on equity instruments measured at FVOCI		11	[1]
Own credit adjustment on financial liabilities designated at fair value		(10)	[1]	43	(164)
Remeasurement of defined benefit obligation recognised in equity		(276)	[1]	45	190
Other comprehensive income for the period (net of tax)		(162)	[1]	268	(6)
Total comprehensive income for the year		6,628	[1]	8,367	7,991
Attributable to:
Owners of Westpac Banking Corporation		6,620	[1]	8,363	7,984
Non-controlling interests		8	[1]	4	7
Total comprehensive income for the year		6,628	[1]	8,367	$ 7,991
Parent Entity
Statements of comprehensive income
Net profit for the year	[1]	7,121		8,144
Gains/(losses) recognised in equity on:
Available-for-sale securities			[1]	(32)
Debt securities measured at fair value through other comprehensive income (FVOCI)		(39)	[1]
Cash flow hedging instruments		(121)	[1]	(125)
Share of associates' other comprehensive income			[1]
Transferred to income statement
Available-for-sale securities			[1]	(33)
Debt securities measured at FVOCI		(29)	[1]
Cash flow hedging instruments		128	[1]	160
Foreign currency translation reserve			[1]
Share of associates' other comprehensive income			[1]
Exchange differences on translation of foreign operations (net of associated hedges)		162	[1]	174
Income tax on items taken to or transferred from equity:
Available-for-sale securities reserve			[1]	19
Debt securities measured at FVOCI		18	[1]
Cash flow hedge reserve		(3)	[1]	(10)
Items that will not be reclassified subsequently to profit or loss (net of tax)
Gains/(losses) on equity instruments measured at FVOCI		(2)	[1]
Own credit adjustment on financial liabilities designated at fair value		(10)	[1]	43
Remeasurement of defined benefit obligation recognised in equity		(268)	[1]	47
Other comprehensive income for the period (net of tax)		(164)	[1]	243
Total comprehensive income for the year		6,957	[1]	8,387
Attributable to:
Owners of Westpac Banking Corporation		6,957	[1]	8,387
Non-controlling interests			[1]
Total comprehensive income for the year		$ 6,957	[1]	$ 8,387
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Balance Sheets

Balance Sheets - AUD ($) $ in Millions		Sep. 30, 2019	Sep. 30, 2018
Assets
Cash and balances with central banks	[1]	$ 20,059	$ 26,788
Collateral paid	[1]	5,930	4,787
Trading securities and financial assets measured at FVIS	[1]	31,781	23,132
Derivative financial instruments	[1]	29,859	24,101
Available-for-sale securities	[1]		61,119
Investment securities	[1]	73,401
Loans	[1]	714,770	709,690
Other financial assets	[1]	5,367	5,517
Life insurance assets	[1]	9,367	9,450
Due from subsidiaries	[1]
Investment in subsidiaries	[1]
Investment in associates	[1]	129	115
Property and equipment	[1]	1,155	1,329
Deferred tax assets	[1]	2,048	1,180
Intangible assets	[1]	11,953	11,763
Other assets	[1]	807	621
Total assets	[1]	906,626	879,592
Liabilities
Collateral received	[1]	3,287	2,184
Deposits and other borrowings	[1]	563,247	559,285
Other financial liabilities	[1]	29,215	28,105
Derivative financial instruments	[1]	29,096	24,407
Debt issues	[1]	181,457	172,596
Current tax liabilities	[1]	163	296
Life insurance liabilities	[1]	7,377	7,597
Due to subsidiaries	[1]
Provisions	[1]	3,169	1,928
Deferred tax liabilities	[1]	44	18
Other liabilities	[1]	2,238	1,338
Total liabilities excluding loan capital	[1]	819,293	797,754
Loan capital	[1]	21,826	17,265
Total liabilities	[1]	841,119	815,019
Net assets	[1]	65,507	64,573
Share capital:
Ordinary share capital	[1]	37,508	36,054
Treasury shares and Restricted Share Plan (RSP) treasury shares	[1]	(553)	(493)
Reserves	[1]	1,311	1,077
Retained profits	[1]	27,188	27,883
Total equity attributable to owners of Westpac Banking Corporation	[1]	65,454	64,521
Non-controlling interests	[1]	53	52
Total shareholders' equity and non-controlling interests	[1]	65,507	64,573
Parent Entity
Assets
Cash and balances with central banks	[1]	17,692	24,976
Collateral paid	[1]	5,773	4,722
Trading securities and financial assets measured at FVIS	[1]	29,565	21,415
Derivative financial instruments	[1]	29,283	23,562
Available-for-sale securities	[1]		56,513
Investment securities	[1]	68,398
Loans	[1]	631,936	630,168
Other financial assets	[1]	4,615	4,666
Life insurance assets	[1]
Due from subsidiaries	[1]	142,961	140,597
Investment in subsidiaries	[1]	6,436	4,508
Investment in associates	[1]	100	76
Property and equipment	[1]	948	1,120
Deferred tax assets	[1]	1,925	1,102
Intangible assets	[1]	9,687	9,494
Other assets	[1]	420	311
Total assets	[1]	949,739	923,230
Liabilities
Collateral received	[1]	2,849	1,748
Deposits and other borrowings	[1]	501,430	500,468
Other financial liabilities	[1]	28,516	27,266
Derivative financial instruments	[1]	28,867	24,229
Debt issues	[1]	156,674	152,288
Current tax liabilities	[1]	88	184
Life insurance liabilities	[1]
Due to subsidiaries	[1]	148,607	142,400
Provisions	[1]	2,980	1,766
Deferred tax liabilities	[1]		3
Other liabilities	[1]	1,064	257
Total liabilities excluding loan capital	[1]	871,075	850,609
Loan capital	[1]	21,826	17,265
Total liabilities	[1]	892,901	867,874
Net assets	[1]	56,838	55,356
Share capital:
Ordinary share capital	[1]	37,508	36,054
Treasury shares and Restricted Share Plan (RSP) treasury shares	[1]	(575)	(508)
Reserves	[1]	1,338	1,114
Retained profits	[1]	18,567	18,696
Total equity attributable to owners of Westpac Banking Corporation	[1]	56,838	55,356
Non-controlling interests	[1]
Total shareholders' equity and non-controlling interests	[1]	$ 56,838	$ 55,356
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Statements of changes in equity

Statements of changes in equity - AUD ($) $ in Millions		Parent EntityTotal equity attributable to owners of Westpac Banking Corporation		Parent EntityShare capital		Parent EntityReserves		Parent EntityRetained profits		Parent Entity		Total equity attributable to owners of Westpac Banking Corporation		Share capital		Reserves		Retained profits		Non-controlling interests	Total
Balance at Sep. 30, 2016												$ 58,120		$ 33,014		$ 727		$ 24,379		$ 61	$ 58,181
Net profit for the year												7,990						7,990		7	7,997	[1]
Net other comprehensive income for the year												(6)				(32)		26			(6)
Total comprehensive income for the year												7,984				(32)		8,016		7	7,991
Transactions in capacity as equityholders
Dividends on ordinary shares	[2]											(6,291)						(6,291)			(6,291)
Dividend reinvestment plan												1,452		1,452							1,452
Other equity movements
Share based payment arrangements												98				98					98
Exercise of employee share options and rights												11		11							11
Purchase of shares (net of issue costs)												(43)		(43)							(43)
Net (acquisition)/disposal of treasury shares												(40)		(40)							(40)
Other												(3)				1		(4)		(14)	(17)
Total contributions and distributions												(4,816)		1,380		99		(6,295)		(14)	(4,830)
Balance at Sep. 30, 2017		$ 52,181		$ 34,452		$ 858		$ 16,871				61,288		34,394		794		26,100		54	61,342
Net profit for the year		8,144						8,144		$ 8,144	[1]	8,095						8,095		4	8,099	[1]
Net other comprehensive income for the year		243				153		90		243		268				180		88			268
Total comprehensive income for the year		8,387				153		8,234		8,387		8,363				180		8,183		4	8,367
Transactions in capacity as equityholders
Dividends on ordinary shares		(6,409)	[3]					(6,409)	[3]			(6,400)	[2]					(6,400)	[2]		(6,400)	[2]
Dividend reinvestment plan		631		631						631		631		631							631
Conversion of Convertible Preference Shares		566		566								566		566							566
Other equity movements
Share based payment arrangements		103				103				103		103				103					103
Exercise of employee share options and rights		3		3								3		3							3
Purchase of shares (net of issue costs)		(35)		(35)								(35)		(35)							(35)
Net (acquisition)/disposal of treasury shares		(71)		(71)								2		2							2
Other																				(6)	(6)
Total contributions and distributions		(5,212)		1,094		103		(6,409)				(5,130)		1,167		103		(6,400)		(6)	(5,136)
Balance at Sep. 30, 2018		55,356		35,546		1,114		18,696		55,356	[1]	64,521		35,561		1,077		27,883		52	64,573	[1]
Impact on adoption of new accounting standards	[1]	(500)				2		(502)				(725)				2		(727)			(725)
Restated opening balance	[1]	54,856		35,546		1,116		18,194				63,796		35,561		1,079		27,156		52	63,848
Net profit for the year	[1]	7,121						7,121		7,121		6,784						6,784		6	6,790
Net other comprehensive income for the year	[1]	(164)				114		(278)		(164)		(164)				122		(286)		2	(162)
Total comprehensive income for the year	[1]	6,957				114		6,843		6,957		6,620				122		6,498		8	6,628
Transactions in capacity as equityholders
Dividends on ordinary shares	[1]	(6,470)	[3]					(6,470)	[3]			(6,466)	[2]					(6,466)	[2]		(6,466)	[2]
Dividend reinvestment plan		1,489	[1]	1,489	[1]					1,489		1,489	[1]	1,489	[1]						1,489	[1]
Other equity movements
Share based payment arrangements		108	[1]			108	[1]			108		108	[1]			108	[1]				108	[1]
Purchase of shares (net of issue costs)	[1]	(33)		(33)								(33)		(33)							(33)
Net (acquisition)/disposal of treasury shares	[1]	(69)		(69)								(62)		(62)							(62)
Other	[1]											2				2				(7)	(5)
Total contributions and distributions	[1]	(4,975)		1,387		108		(6,470)				(4,962)		1,394		110		(6,466)		(7)	(4,969)
Balance at Sep. 30, 2019	[1]	$ 56,838		$ 36,933		$ 1,338		$ 18,567		$ 56,838		$ 65,454		$ 36,955		$ 1,311		$ 27,188		$ 53	$ 65,507
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.
[2]	2019 comprises 2019 interim dividend 94 cents per share ($3,239 million) and 2018 final dividend 94 cents per share ($3,227 million) (2018: 2018 interim dividend 94 cents per share ($3,213 million) and 2017 final dividend 94 cents per share ($3,187 million), 2017: 2017 interim dividend 94 cents per share ($3,150 million) and 2016 final dividend 94 cents per share ($3,141 million)), all fully franked at 30%.
[3]	2019 comprises 2019 interim dividend 94 cents per share ($3,241 million) and 2018 final dividend 94 cents per share ($3,229 million) (2018: 2018 interim dividend 94 cents per share ($3,218 million) and 2017 final dividend 94 cents per share ($3,191 million)), all fully franked at 30%.

Statements of changes in equi_2

Statements of changes in equity (Parenthetical) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Interim dividend (in dollars per share)	$ 0.94	$ 0.94	$ 0.94
Interim dividend	$ 3,239	$ 3,213	$ 3,150
Final dividend (in dollars per share)		$ 0.94	$ 0.94	$ 0.94
Final dividend		$ 3,227	$ 3,187	$ 3,141
Dividend tax rate (as a percent)	30.00%	30.00%	30.00%	30.00%
Parent Entity
Interim dividend (in dollars per share)	$ 0.94	$ 0.94
Interim dividend	$ 3,241	$ 3,218
Final dividend (in dollars per share)		$ 0.94	$ 0.94
Final dividend		$ 3,229	$ 3,191
Dividend tax rate (as a percent)	30.00%	30.00%	30.00%

Cash flow statements

Cash flow statements - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Interest received	[1]	$ 33,093	$ 32,639	$ 31,133
Interest paid	[1]	(16,486)	(15,789)	(15,415)
Dividends received excluding life business	[1]	6	9	27
Other non-interest income received	[1]	3,865	4,995	4,926
Operating expenses paid	[1]	(9,080)	(7,889)	(7,828)
Income tax paid excluding life business	[1]	(3,406)	(3,585)	(3,388)
Life business:
Receipts from policyholders and customers	[1]	2,189	2,008	2,239
Interest and other items of similar nature	[1]	6	17	24
Dividends received	[1]	553	642	433
Payments to policyholders and suppliers	[1]	(2,250)	(2,089)	(1,861)
Income tax paid	[1]	(94)	(143)	(164)
Cash flows from operating activities before changes in operating assets and liabilities	[1]	8,396	10,815	10,126
Net (increase)/decrease in:
Collateral paid	[1]	(847)	969	2,320
Trading securities and financial assets measured at FVIS	[1]	(7,629)	3,492	(4,729)
Derivative financial instruments	[1]	7,605	8,584	(5,042)
Loans	[1]	(4,188)	(24,740)	(26,815)
Other financial assets	[1]	336	859	466
Life insurance assets and liabilities	[1]	(134)	(230)	219
Other assets	[1]	(13)	10	67
Net increase/(decrease) in:
Collateral received	[1]	1,007	(295)	739
Deposits and other borrowings	[1]	1,113	23,928	23,062
Other financial liabilities	[1]	1,463	(3,632)	2,506
Other liabilities	[1]	(5)	10	(82)
Net cash provided by/(used in) operating activities	[1]	7,104	19,770	2,837
Cash flows from investing activities
Proceeds from available-for-sale securities	[1]		23,878	25,717
Purchase of available-for-sale securities	[1]		(24,376)	(27,028)
Proceeds from investment securities	[1]	19,768
Purchase of investment securities	[1]	(29,527)
Net movement in amounts due to/from controlled entities	[1]
Proceeds/(Payments) from disposal of controlled entities, net of cash disposed	[1]	(1)	9
Net (increase)/decrease in investments in controlled entities	[1]
Proceeds from disposal of associates	[1]	45		630
Purchase of associates	[1]	(25)	(30)	(52)
Proceeds from disposal of property and equipment	[1]	157	91	65
Purchase of property and equipment	[1]	(280)	(310)	(264)
Purchase of intangible assets	[1]	(906)	(882)	(766)
Net cash provided by/(used in) investing activities	[1]	(10,769)	(1,620)	(1,698)
Cash flows from financing activities
Proceeds from debt issues (net of issue costs)	[1]	61,484	59,456	72,368
Redemption of debt issues	[1]	(63,313)	(64,698)	(69,119)
Issue of loan capital (net of issue costs)	[1]	4,935	2,342	4,437
Redemption of loan capital	[1]	(1,662)	(2,387)	(2,188)
Proceeds from exercise of employee options	[1]		3	11
Purchase of shares on exercise of employee options and rights	[1]	(6)	(8)	(17)
Shares purchased for delivery of employee share plan	[1]	(27)	(27)	(27)
Purchase of RSP treasury shares	[1]	(69)	(71)	(68)
Net sale/(purchase) of other treasury shares	[1]	7	73	7
Payment of dividends	[1]	(4,977)	(5,769)	(4,839)
Payment of distributions to non-controlling interests	[1]	(5)	(6)	(13)
Net cash provided by/(used in) financing activities	[1]	(3,633)	(11,092)	552
Net increase/(decrease) in cash and balances with central banks	[1]	(7,298)	7,058	1,691
Effect of exchange rate changes on cash and balances with central banks	[1]	569	944	(302)
Cash and balances with central banks as at the beginning of the year	[1]	26,788	18,786	17,397
Cash and balances with central banks as at the end of the year	[1]	20,059	26,788	18,786
Parent Entity
Cash flows from operating activities
Interest received	[1]	33,770	32,947
Interest paid	[1]	(19,444)	(18,728)
Dividends received excluding life business	[1]	2,218	2,016
Other non-interest income received	[1]	2,982	3,832
Operating expenses paid	[1]	(7,491)	(6,543)
Income tax paid excluding life business	[1]	(3,081)	(3,349)
Life business:
Receipts from policyholders and customers	[1]
Interest and other items of similar nature	[1]
Dividends received	[1]
Payments to policyholders and suppliers	[1]
Income tax paid	[1]
Cash flows from operating activities before changes in operating assets and liabilities	[1]	8,954	10,175
Net (increase)/decrease in:
Collateral paid	[1]	(755)	662
Trading securities and financial assets measured at FVIS	[1]	(7,358)	2,815
Derivative financial instruments	[1]	6,581	8,263
Loans	[1]	(3,312)	(23,661)
Other financial assets	[1]	324	502
Life insurance assets and liabilities	[1]
Other assets	[1]	(41)	33
Net increase/(decrease) in:
Collateral received	[1]	1,004	(606)
Deposits and other borrowings	[1]	963	20,783
Other financial liabilities	[1]	1,555	(3,742)
Other liabilities	[1]	(24)	17
Net cash provided by/(used in) operating activities	[1]	7,891	15,241
Cash flows from investing activities
Proceeds from available-for-sale securities	[1]		21,525
Purchase of available-for-sale securities	[1]		(22,230)
Proceeds from investment securities	[1]	16,483
Purchase of investment securities	[1]	(25,719)
Net movement in amounts due to/from controlled entities	[1]	2,110	923
Proceeds/(Payments) from disposal of controlled entities, net of cash disposed	[1]
Net (increase)/decrease in investments in controlled entities	[1]	94	(577)
Proceeds from disposal of associates	[1]
Purchase of associates	[1]	(24)	(30)
Proceeds from disposal of property and equipment	[1]	143	62
Purchase of property and equipment	[1]	(209)	(251)
Purchase of intangible assets	[1]	(846)	(823)
Net cash provided by/(used in) investing activities	[1]	(7,968)	(1,401)
Cash flows from financing activities
Proceeds from debt issues (net of issue costs)	[1]	50,375	57,440
Redemption of debt issues	[1]	(56,347)	(58,005)
Issue of loan capital (net of issue costs)	[1]	4,935	2,342
Redemption of loan capital	[1]	(1,662)	(2,387)
Proceeds from exercise of employee options	[1]		3
Purchase of shares on exercise of employee options and rights	[1]	(6)	(8)
Shares purchased for delivery of employee share plan	[1]	(27)	(27)
Purchase of RSP treasury shares	[1]	(69)	(71)
Net sale/(purchase) of other treasury shares	[1]
Payment of dividends	[1]	(4,981)	(5,778)
Payment of distributions to non-controlling interests	[1]
Net cash provided by/(used in) financing activities	[1]	(7,782)	(6,491)
Net increase/(decrease) in cash and balances with central banks	[1]	(7,859)	7,349
Effect of exchange rate changes on cash and balances with central banks	[1]	575	936
Cash and balances with central banks as at the beginning of the year	[1]	24,976	16,691
Cash and balances with central banks as at the end of the year	[1]	$ 17,692	$ 24,976	$ 16,691
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Financial statements preparatio

Financial statements preparation	12 Months Ended
	Sep. 30, 2019
Financial statements preparation
Financial statements preparation	Note 1. Financial statements preparation This financial report of Westpac Banking Corporation (the Parent Entity), together with its controlled entities (the Group or Westpac), for the year ended 30 September 2019, was authorised for issue by the Board of Directors on 4 November 2019. The Directors have the power to amend and reissue the financial report. The principal accounting policies are set out below and in the relevant notes to the financial statements. The accounting policy for the recognition and derecognition of financial assets and financial liabilities precedes Note 10. These accounting policies provide details of the accounting treatments adopted for complex balances and where accounting standards provide policy choices. These policies have been consistently applied to all the years presented, unless otherwise stated. a. Basis of preparation (i) Basis of accounting This financial report is a general purpose financial report prepared in accordance with: ▪ the requirements for an authorised deposit-taking institution under the Banking Act 1959 (as amended); ▪ Australian Accounting Standards (AAS) and Interpretations as issued by the Australian Accounting Standards Board (AASB); and ▪ the Corporations Act 2001 . Westpac Banking Corporation is a for-profit entity for the purposes of preparing this financial report. The financial report also complies with International Financial Reporting Standards (IFRS) as issued by the International Accounting Standards Board (IASB) and Interpretations as issued by the IFRS Interpretations Committee (IFRIC). It also includes additional disclosures required for foreign registrants by the United States Securities and Exchange Commission (US SEC). All amounts have been rounded in accordance with ASIC Corporations (Rounding in Financial/Directors’ Reports) Instrument 2016/191, to the nearest million dollars, unless otherwise stated. (ii) Historical cost convention The financial report has been prepared under the historical cost convention, as modified by applying fair value accounting to financial assets and financial liabilities (including derivative instruments) measured at fair value through income statement (FVIS) or in other comprehensive income (OCI). (iii) Changes in accounting policies Balance sheet The following voluntary presentation changes to the balance sheet (and related notes) have been made to improve consistency and provide more relevant information to the users of the financial statements by reporting balances of a similar nature together in the same place in the balance sheet. These changes have no effect on the measurement of these items and therefore had no impact on retained earnings or net profit. These changes are: ▪ the addition of new balance sheet lines for ‘collateral paid’, ‘other financial assets’, ‘collateral received’ and ‘other financial liabilities’; ▪ removal of the balance sheet line ‘receivables due from other financial institutions’ and reclassification to ‘collateral paid’ and ‘other financial assets’; ▪ removal of the balance sheet line ‘regulatory deposits with central banks overseas’ and reclassification to ‘cash and balances with central banks’ and ‘trading securities and financial assets measured at FVIS; ▪ removal of the balance sheet line ‘payables due to other financial institutions’ and reclassification to ‘collateral received’ and ‘other financial liabilities’; ▪ reclassification of collateral balances with non-financial institutions from ‘other assets’ and ‘other liabilities’ to ‘collateral paid’ and ‘collateral received’ respectively; ▪ reclassification of financial assets or financial liabilities included in other assets or other liabilities respectively to other financial assets and other financial liabilities respectively; and ▪ reclassification of other financial liabilities at FVIS to other financial liabilities. Collateral paid/collateral received includes cash provided to/received from counterparties as collateral over financial liabilities/assets arising from derivative contracts, stock borrowing arrangements and funding transactions. It includes initial and variation margin placed as security for derivative transactions. Comparatives for 30 September 2018 have been restated for these voluntary presentation changes and are detailed as follows. Consolidated Parent Entity Presentation Presentation $m Reported changes Restated Reported changes Restated Assets Cash and balances with central banks 26,431 357 26,788 24,726 250 24,976 Receivables due from other financial institutions 5,790 (5,790) — 5,711 (5,711) — Collateral paid — 4,787 4,787 — 4,722 4,722 Trading securities and financial assets measured at FVIS 22,134 998 23,132 20,417 998 21,415 Regulatory deposits with central banks overseas 1,355 (1,355) — 1,248 (1,248) — Other financial assets 1 — 5,517 5,517 — 4,666 4,666 Other assets 5,135 (4,514) 621 3,988 (3,677) 311 All other assets 818,747 — 818,747 867,140 — 867,140 Total assets 879,592 — 879,592 923,230 — 923,230 Liabilities Payables due to other financial institutions 18,137 (18,137) — 17,682 (17,682) — Collateral received — 2,184 2,184 — 1,748 1,748 Other financial liabilities at FVIS 4,297 (4,297) — 4,297 (4,297) — Other financial liabilities 1 — 28,105 28,105 — 27,266 27,266 Other liabilities 9,193 (7,855) 1,338 7,292 (7,035) 257 All other liabilities 783,392 — 783,392 838,603 — 838,603 Total liabilities 815,019 — 815,019 867,874 — 867,874 1. Refer to Note 14 and Note 17 for further information. Income statement The following voluntary presentation changes to the income statement (and related notes) have been made to provide more relevant information to the users of the financial statements. These changes have no effect on the measurement of these items and therefore had no impact on retained earnings or net profit. Net interest income ▪ The components of interest income and interest expense relating to the balance sheet reclassifications have been restated accordingly. Note that there was no net impact to total interest income, total interest expense or to net interest income. Comparatives have been restated for these voluntary presentation changes and are detailed in the following table. ▪ In addition, to comply with disclosure requirements, interest income calculated using the effective interest rate method has been presented separately from other interest income. For consistency, interest expense is presented in the same way. The details are provided in Note 3. Consolidated 2018 Consolidated 2017 Parent Entity 2018 Presentation Presentation Presentation $m Reported changes Restated Reported changes Restated Reported changes Restated Note 3: Net interest income Interest income Cash and balances with central banks 325 1 326 241 1 242 300 1 301 Receivables due from other financial institutions 108 (108) — 110 (110) — 102 (102) — Collateral paid — 129 129 — 96 96 — 126 126 Net ineffectiveness on qualifying hedges (18) — (18) (22) — (22) (22) — (22) Trading securities and financial assets measured at FVIS 542 22 564 558 16 574 499 22 521 Available-for-sale securities 1,914 — 1,914 1,795 — 1,795 1,743 — 1,743 Investment securities — — — — — — — — — Loans 29,621 — 29,621 28,504 — 28,504 25,801 — 25,801 Regulatory deposits with central banks overseas 23 (23) — 17 (17) — 23 (23) — Due from subsidiaries — — — — — — 4,328 — 4,328 Other interest income 56 (21) 35 29 14 43 56 (24) 32 Total interest income 32,571 — 32,571 31,232 — 31,232 32,830 — 32,830 Interest expense Payable due to other financial institutions (319) 319 — (279) 279 — (314) 314 — Collateral received — (45) (45) — (19) (19) — (41) (41) Deposits and other borrowings (9,021) — (9,021) (8,868) — (8,868) (7,817) — (7,817) Trading liabilities (959) — (959) (2,065) — (2,065) (754) — (754) Debt issues (4,480) — (4,480) (3,585) — (3,585) (3,958) — (3,958) Due to subsidiaries — — — — — — (4,851) — (4,851) Loan capital (774) — (774) (693) — (693) (774) — (774) Bank levy (378) — (378) (95) — (95) (378) — (378) Other interest expense (135) (274) (409) (131) (260) (391) (131) (273) (404) Total interest expense (16,066) — (16,066) (15,716) — (15,716) (18,977) — (18,977) Net interest income 16,505 — 16,505 15,516 — 15,516 13,853 — 13,853 Non-interest income and operating expenses ▪ Disaggregating the non-interest income line on the income statement into four separate lines for net fee income, net wealth management and insurance income, trading income and other income. ▪ Separating net fee income in the non-interest income note into fee income and fee expenses. ▪ Reclassifying credit card loyalty program expense from operating expenses to the new fee expenses category in the non-interest income note. Fee expenses include those expenses that are incremental external costs that vary directly with the provision of goods or services to customers (excluding expenses which would qualify as transaction costs relating to the issue, acquisition or disposal of a financial asset or a financial liability which are deferred and included in the effective interest rate and recognised in net interest income). An incremental cost is one that would not have been incurred if a specific good or service had not been provided to a specific customer. Comparatives have been restated for these voluntary presentation changes and are detailed in the following table. Consolidated 2018 Consolidated 2017 Parent Entity 2018 Presentation Presentation Presentation $m Reported changes Restated Reported changes Restated Reported changes Restated Income statement Net interest income 16,505 — 16,505 15,516 — 15,516 13,853 — 13,853 Non-interest income 5,628 (5,628) — 6,286 (6,286) — 5,825 (5,825) — Net fee income — 2,424 2,424 — 2,603 2,603 — 2,172 2,172 Net wealth management and insurance income — 2,061 2,061 — 1,800 1,800 — — — Trading income — 945 945 — 1,202 1,202 — 919 919 Other income — 72 72 — 529 529 — 2,633 2,633 Net operating income before operating expenses and impairment charges 22,133 (126) 22,007 21,802 (152) 21,650 19,678 (101) 19,577 Operating expenses (9,692) 126 (9,566) (9,434) 152 (9,282) (8,101) 101 (8,000) Impairment charges (710) — (710) (853) — (853) (682) — (682) Profit before income tax 11,731 — 11,731 11,515 — 11,515 10,895 — 10,895 Income tax expense (3,632) — (3,632) (3,518) — (3,518) (2,751) — (2,751) Net profit for the year 8,099 — 8,099 7,997 — 7,997 8,144 — 8,144 Note 4: Non-interest income (extract) Net fee income Facility fees 1,347 18 1,365 1,333 17 1,350 1,333 18 1,351 Transaction fees 1,105 77 1,182 1,193 65 1,258 886 53 939 Other non-risk fee income 98 — 98 229 — 229 54 — 54 Fee income 2,550 95 2,645 2,755 82 2,837 2,273 71 2,344 Credit card loyalty programs — (126) (126) — (152) (152) — (101) (101) Transaction fee related expenses — (95) (95) — (82) (82) — (71) (71) Fee expenses — (221) (221) — (234) (234) — (172) (172) Net fee income 2,550 (126) 2,424 2,755 (152) 2,603 2,273 (101) 2,172 Note 5: Operating expenses (extract) Credit card loyalty programs 126 (126) — 152 (152) — 101 (101) — Total other expenses 1,662 (126) 1,536 1,652 (152) 1,500 1,357 (101) 1,256 Total operating expenses 9,692 (126) 9,566 9,434 (152) 9,282 8,101 (101) 8,000 (iv) Standards adopted during the year ended 30 September 2019 AASB 9 Financial Instruments (December 2014) (AASB 9) The Group adopted AASB 9 on 1 October 2018. The adoption of AASB 9 has been applied by adjusting the opening balance sheet at 1 October 2018, with no restatement of comparatives as permitted by the standard. The adoption of AASB 9 reduced retained earnings at 1 October 2018 by $722 million (net of tax) for the Group and by $495 million (net of tax) for the Parent Entity. This was primarily due to the increase in impairment provisions under the new standard. Impairment AASB 9 introduces a revised impairment model which requires entities to recognise expected credit losses (ECL) based on unbiased forward looking information, replacing the incurred loss model under AASB 139 Financial instruments: Recognition and Measurement (AASB 139) which only recognised impairment if there was objective evidence that a loss had been incurred. The revised impairment model applies to all financial assets at amortised cost, lease receivables, debt securities measured at FVOCI, and credit commitments. The accounting policy for the provision for ECL under AASB 9 is detailed in Notes 6 and 13. Classification and measurement AASB 9 replaced the classification and measurement model in AASB 139 with a new model that categorises financial assets based on: a) the business model within which the assets are managed and b) whether the contractual cash flows under the instrument represent solely payments of principal and interest (SPPI). The accounting policies for the classification and measurement of financial assets and financial liabilities precede Note 10 and are also located in the relevant notes to the financial statements for financial assets and financial liabilities. In the 2014 financial year, the Group early adopted part of AASB 9 which relates to the recognition of the changes in fair value of financial liabilities designated at fair value attributable to Westpac’s own credit risk in other comprehensive income (except where it would create an accounting mismatch, in which case all changes in fair value are recognised in the income statement). As a result, the accounting for this remains unchanged for the Group. Hedging AASB 9 changes hedge accounting by increasing the eligibility of both hedged items and hedging instruments and introducing a more principles-based approach to assessing hedge effectiveness. Adoption of the new hedge accounting model is optional until the IASB completes its accounting for dynamic risk management project. Until this time, current hedge accounting under AASB 139 can continue to be applied. The Group has applied the option to continue hedge accounting under AASB 139, however the Group has adopted the amended AASB 7 Financial Instruments: Disclosures (AASB 7) hedge accounting disclosures as required. AASB 15 Revenue from Contracts with Customers (AASB 15) The Group adopted AASB 15 on 1 October 2018. It replaced AASB 118 Revenue and related interpretations and applies to all contracts with customers, except leases, financial instruments and insurance contracts. The standard provides a systematic approach to revenue recognition by introducing a five-step model governing revenue measurement and recognition. This includes: ▪ identifying the contract with customer; ▪ identifying each of the performance obligations included in the contract; ▪ determining the amount of consideration in the contract; ▪ allocating the consideration to each of the identified performance obligations; and ▪ recognising revenue as each performance obligation is satisfied. The Group has applied AASB 15 by reducing the opening balance of retained earnings at the date of initial application, 1 October 2018, by $5 million (net of tax) for the Group and by $7 million (net of tax) for the Parent Entity with no comparative restatement. In addition, the Group identified certain income and expenses which were previously reported on a net basis primarily within fee income which are now being presented on a gross basis. Finally, certain facility fees have been reclassified from non-interest income to interest income. Transition (AASB 9 and AASB 15) Impact of the adoption of AASB 9 – impairment The following tables show the impact of the adoption of AASB 9 on impairment balances. Provisions on debt Loss allowance securities and Provisions for on debt other financial Consolidated Provisions credit securities at assets at $m on loans commitments FVOCI 1 amortised cost Total 30 September 2018 - carrying amount 2,814 239 — — 3,053 ECL on amortised cost financial instruments 882 98 — 9 989 ECL on debt securities measured at FVOCI — — 2 — 2 1 October 2018 - AASB 9 carrying amount 3,696 337 2 9 4,044 Provisions on debt Loss allowance securities and Provisions for on debt other financial Parent Entity Provisions credit securities at assets at $m on loans commitments FVOCI 1 amortised cost Total 30 September 2018 - carrying amount 2,407 206 — — 2,613 ECL on amortised cost financial instruments 751 95 — — 846 ECL on debt securities measured at FVOCI — — 2 — 2 1 October 2018 - AASB 9 carrying amount 3,158 301 2 — 3,461 1. Impairment on debt securities at FVOCI is recognised in the income statement with a corresponding amount in other comprehensive income (refer to Note 28). There is no reduction of the carrying value of the debt security which remains at fair value. Impact of the adoption of AASB 9 – classification and measurement Investment securities Investment securities represent all debt and equity securities not measured at FVIS. Investment securities include debt securities at amortised cost and both debt and equity securities at FVOCI. As a result of the adoption of AASB 9, available-for-sale debt securities of $811 million for the Group and $10 million for the Parent Entity have been reclassified to investment securities - debt securities at amortised cost as the business model for these instruments is achieved by collecting the contractual cash flows and these cash flows represent SPPI. The remaining available-for-sale debt securities of $60 billion for the Group and $56 billion for the Parent Entity have been reclassified to investment securities measured at FVOCI. In addition, available-for-sale equity securities have been assessed on an instrument-by-instrument basis. For the Group, $275 million of available-for-sale equity securities have been reclassified to trading securities and financial assets measured at FVIS. The Group has elected to irrevocably designate the remaining $109 million of available-for-sale equity securities to continue to be measured at FVOCI. For the Parent Entity, all $67 million of available-for-sale equity securities were irrevocably designated to continue to be measured at FVOCI. Loans As a result of the adoption of AASB 9, for both the Group and the Parent Entity, $56 million of loans which were measured at amortised cost are measured at FVIS as the cash flows of the loan do not represent SPPI. 30 September 2018 1 October 2018 AASB 139 measurement basis AASB 9 measurement basis Change in measurement Consolidated Amortised basis under Amortised $m cost FVIS FVOCI Total AASB 9 cost FVIS FVOCI Total Financial assets Cash and balances with central banks 26,788 — — 26,788 No 26,788 — — 26,788 Collateral paid 4,787 — — 4,787 No 4,787 — — 4,787 Trading securities and financial assets measured at FVIS — 23,132 — 23,132 No — 23,132 — 23,132 Derivative financial instruments — 24,101 — 24,101 No — 24,101 — 24,101 Available-for-sale securities — — 61,119 61,119 Yes 811 275 60,033 61,119 Loans 1 709,144 546 — 709,690 Yes 709,088 602 — 709,690 Other financial assets 5,517 — — 5,517 No 5,517 — — 5,517 Life insurance assets — 9,450 — 9,450 No — 9,450 — 9,450 Total financial assets 746,236 57,229 61,119 864,584 746,991 57,560 60,033 864,584 Financial liabilities Collateral received 2,184 — — 2,184 No 2,184 — — 2,184 Deposits and other borrowings 518,107 41,178 — 559,285 No 518,107 41,178 — 559,285 Other financial liabilities 23,808 4,297 — 28,105 No 23,808 4,297 — 28,105 Derivative financial instruments — 24,407 — 24,407 No — 24,407 — 24,407 Debt issues 169,241 3,355 — 172,596 No 169,241 3,355 — 172,596 Life insurance liabilities — 7,597 — 7,597 No — 7,597 — 7,597 Loan capital 17,265 — — 17,265 No 17,265 — — 17,265 Total financial liabilities 730,605 80,834 — 811,439 730,605 80,834 — 811,439 30 September 2018 1 October 2018 AASB 139 measurement basis AASB 9 measurement basis Change in measurement Parent Entity Amortised basis under Amortised $m cost FVIS FVOCI Total AASB 9 cost FVIS FVOCI Total Financial assets Cash and balances with central banks 24,976 — — 24,976 No 24,976 — — 24,976 Collateral paid 4,722 — — 4,722 No 4,722 — — 4,722 Trading securities and financial assets measured at FVIS — 21,415 — 21,415 No — 21,415 — 21,415 Derivative financial instruments — 23,562 — 23,562 No — 23,562 — 23,562 Available-for-sale securities — — 56,513 56,513 Yes 10 — 56,503 56,513 Loans 1 629,622 546 — 630,168 Yes 629,566 602 — 630,168 Other financial assets 4,666 — — 4,666 No 4,666 — — 4,666 Due from subsidiaries 2,3 133,808 278 — 134,086 No 133,808 278 — 134,086 Total financial assets 797,794 45,801 56,513 900,108 797,748 45,857 56,503 900,108 Financial liabilities Collateral received 1,748 — — 1,748 No 1,748 — — 1,748 Deposits and other borrowings 460,406 40,062 — 500,468 No 460,406 40,062 — 500,468 Other financial liabilities 22,969 4,297 — 27,266 No 22,969 4,297 — 27,266 Derivative financial instruments — 24,229 — 24,229 No — 24,229 — 24,229 Debt issues 149,065 3,223 — 152,288 No 149,065 3,223 — 152,288 Due to subsidiaries 4 141,877 523 — 142,400 No 141,877 523 — 142,400 Loan capital 17,265 — — 17,265 No 17,265 — — 17,265 Total financial liabilities 793,330 72,334 — 865,664 793,330 72,334 — 865,664 1. As at 30 September 2018, loans at amortised cost were restated from $706,440 million to $709,144 million for the Group, and from $626,918 million to $629,622 million for the Parent Entity. Loans at FVIS were also restated from $3,250 million to $546 million for both the Group and the Parent Entity. 2. Due from subsidiaries excludes $6,511 million of long-term debt instruments with equity like characteristics which are part of the total investment in subsidiaries. 3. Comparatives have been restated to reclassify $278 million from amortised cost to FVIS. 4. Comparatives have been restated to reclassify $523 million from amortised cost to FVIS. Reconciliation of the opening balance sheet The following tables reconcile the reported 30 September 2018 balance sheet to the 1 October 2018 opening balance sheet on adoption of AASB 9 and AASB 15 showing separately the impact of adjustments relating to reclassification and remeasurement including the related tax impacts. 30 September 2018 1 October 2018 Restated Opening Consolidated Carrying AASB 9 changes AASB 15 carrying $m Amount Reclassifications Remeasurement 1 changes amount Assets Cash and balances with central banks 26,788 — — — 26,788 Collateral paid 4,787 — — — 4,787 Trading securities and financial assets measured at FVIS 23,132 275 — — 23,407 Derivative financial instruments 24,101 — — — 24,101 Available-for-sale securities 61,119 (61,119) — — — Investment securities — 60,844 (9) — 60,835 Loans (at amortised cost) 709,144 (56) (925) — 708,163 Loans (at fair value) 546 56 — — 602 Other financial assets 5,517 — — — 5,517 Deferred tax assets 1,180 — 300 — 1,480 All other assets 23,278 — — — 23,278 Total assets 879,592 — (634) — 878,958 Liabilities Collateral received 2,184 — — — 2,184 Deposits and other borrowings 559,285 — — — 559,285 Other financial liabilities 28,105 — — (12) 28,093 Derivative financial instruments 24,407 — — — 24,407 Debt issues 172,596 — — — 172,596 Provisions 1,928 — 98 — 2,026 Loan capital 17,265 — — — 17,265 All other liabilities 9,249 — (12) 17 9,254 Total liabilities 815,019 — 86 5 815,110 Net assets 64,573 — (720) (5) 63,848 Shareholders’ equity Share capital: Ordinary shares 36,054 — — — 36,054 Treasury shares and RSP treasury shares (493) — — — (493) Reserves 1,077 — 2 — 1,079 Retained profits 27,883 — (722) (5) 27,156 Total equity attributable to owners of Westpac Banking Corporation 64,521 — (720) (5) 63,796 Non-controlling interests 52 — — — 52 Total shareholder's equity and Non-controlling interests 64,573 — (720) (5) 63,848 1. The impact on adoption of expected credit loss provisioning resulted in increases in provisions on loans by $882 million, provisions for credit commitments by $98 million and loss allowance on debt securities at FVOCI by $2 million and provisions on debt securities at amortised cost by $9 million. 30 September 2018 1 October 2018 Restated Opening Parent Entity Carrying AASB 9 changes AASB 15 carrying $m Amount Reclassifications Remeasurement 1 changes amount Assets Cash and balances with central banks 24,976 — — — 24,976 Collateral paid 4,722 — — — 4,722 Trading securities and financial assets measured at FVIS 21,415 — — — 21,415 Derivative financial instruments 23,562 — — — 23,562 Available-for-sale securities 56,513 (56,513) — — — Investment securities — 56,513 — — 56,513 Loans (at amortised cost) 629,622 (56) (786) — 628,780 Loans (at fair value) 546 56 — — 602 Other financial assets 4,666 — — — 4,666 Due from subsidiaries 140,597 — — — 140,597 Investment in subsidiaries 4,508 — — — 4,508 Deferred tax assets 1,102 — 258 — 1,360 All other assets 11,001 — — — 11,001 Total assets 923,230 — (528) — 922,702 Liabilities Collateral received 1,748 — — — 1,748 Deposits and other borrowings 500,468 — — — 500,468 Other financial liabilities 27,266 — — (9) 27,257 Derivative financial instruments 24,229 — — — 24,229 Debt issues 152,288 — — — 152,288 Due to subsidiaries 142,400 — (118) — 142,282 Provisions 1,766 — 95 — 1,861 Loan capital 17,265 — — — 17,265 All other liabilities 444 — (12) 16 448 Total liabilities 867,874 — (35) 7 867,846 Net assets 55,356 — (493) (7) 54,856 Shareholders’ equity Share capital: Ordinary shares 36,054 — — — 36,054 Treasury shares and RSP treasury shares (508) — — — (508) Reserves 1,114 — 2 — 1,116 Retained profits 18,696 — (495) (7) 18,194 Total equity attributable to owners of Westpac Banking Corporation 55,356 — (493) (7) 54,856 Non-controlling interests — — — — — Total shareholder's equity and non-controlling interests 55,356 — (493) (7) 54,856 1. The impact on adoption of expected credit loss provisioning resulted in increases in provisions on loans by $751 million, provisions for credit commitments by $95 million and loss allowance on debt securities measured at FVOCI by $2 million. Included in the increase in provision on loans was $118 million relating to loans which have been securitised by the Parent Entity to subsidiaries. The due to subsidiaries balance has been reduced by this amount as the relevant subsidiary records the expected credit loss on these loans and adjusts its intergroup receivable from the Parent Entity accordingly. As permitted by AASB 9 and AASB 15, comparatives have not been restated. Comparatives have been restated for voluntary presentation changes as detailed in the section “Changes in accounting policies” above. (v) Business combinations Business combinations are accounted for using the acquisition method of accounting. Acquisition cost is measured as the aggregate of the fair value at the date of acquisition of the assets given, equity instruments issued or liabilities incurred or assumed. Acquisition-related costs are expensed as incurred (except for those costs arising on the issue of equity instruments which are recognised directly in equity). Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured at fair value on the acquisition date. Goodwill is measured as the excess of the acquisition cost, the amount of any non-controlling interest and the fair value of any previous Westpac equity interest in the acquiree, over the fair value of the identifiable net assets acquired. (vi) Foreign currency translation Functional and presentational currency The consolidated financial statements are presented in Australian dollars which is the Parent Entity’s functional and presentation currency. The functional currency of offshore entities is usually the main currency of the economy it operates in. Transactions and balances Foreign currency transactions are translated into the functional currency of the relevant branch or subsidiary using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation at year end exchange rates of monetary assets and liabilities denominated in foreign currencies are recognised in the income statement, except when deferred in other comprehensive income for qualifying cash flow hedges and qualifying net investment hedges. Foreign operations Assets and liabilities of foreign branches and subsidiaries that have a functional currency other than the Australian dollar are translated at exchange rates prevailing on the balance date. Income and expenses are translated at average exchange rates prevailing during the year. Equity balances are translated at historical exchange rates. The resulting exchange differences are recognised in the foreign currency translation reserve and in other comprehensive income. On consolidation, exchange differences arising from the translation of borrowings and other foreign currency instruments designated as hedges of the net investment in foreign operations are reflected in the foreign currency translation reserve and in other comprehensive income. When all or part of a foreign operation is disposed or borrowings that are part of the net investments are repaid, a proportionate share of such exchange differences is recognised in the income statement as part of the gain or loss on disposal or repayment of borrowing. b. Critical accounting assumptions and estimates Applying the Group’s accounting policies requires the use of judgement, assumptions and estimates which impact the financial information. The significant assumptions and estimates used are discussed in the relevant notes below: ▪ Note 7 Income tax ▪ Note 13 Provisions for expected credit losses/impairment charges ▪ Note 15 Life insurance assets and life insurance liabilities ▪ Note 22 Fair values of financial assets and financial liabilities ▪ Note 25 Intangible assets ▪ Note 27 Provisions, contingent liabilities, contingent assets and credit commitments ▪ Note 34 Superannuation commitments c. The following new standards and interpretations which may have a material impact on the Group have been issued but are not yet effective, and unless otherwise stated, have not been early adopted by the Group: AASB 16 Leases (AASB 16) was issued on 23 February 2016 and will be effective for the 30 September 2020 financial year. The standard will not result in significant changes for lessor accounting. The main changes under the standard are: ▪ all operating leases of greater than 12 months duration will be required to be presented on balance sheet by the lessee as a right-of-use (ROU) asset and lease liability. The asset and liability will initially be measured at the present value of non-cancellable lease payments and payments to be made in optional periods where it is reasonably certain that the option will be exercised; and ▪ all leases on balance sheet will give rise to a combination of interest expense on the lease liability and depreciation of the ROU asset. The AASB 16 implementation and governance program is led by Finance with representatives from the impacted areas of the business with oversight from the Chief Financial Officer. The project has identified the portfolios impacted by that standard which are predominantly property leases. In addition, the project has updated finance systems and processes, established a governance framework, updated relevant policies and addressed key judgements including the transition option that will be applied in order to determine the expected impact to the Group. The Group will adopt the standard using the simplified approach of transition with no restatement of comparative information. The expected impact on adoption of the standard will be to recognise a ROU asset of approximately $3.4 billion and an equivalent lease liability with no impact on retained earnings. The Group has determined that it will use the incremental borrowing rate as the discount rate when determining present value. This discount rate will be based on the remaining maturity of the lease at the date of transition. The Group will also apply the practical exemptions for low-value assets and short-term leases. AASB 17 Insurance Contracts (AASB 17) was issued on 19 July 2017 and will be effective for the 30 September 2022 year end unless early adopted. This will replace AASB 4 Insurance Contracts, AASB 1023 General Insurance Contracts and AASB 1038 Life Insurance Contracts . The main changes under the standard are: ▪ the scope of the standard may result in some contracts that are currently "unbundled", i.e. accounted for separately as insurance and investment contracts being required to be "bundled" and accounted for as an insurance contract; ▪ portfolios of contracts (with similar risks which are managed together) will be required to be disaggregated to a more granular level by both the age of a contract and the likelihood

Segment reporting

Segment reporting	12 Months Ended
	Sep. 30, 2019
Segment reporting
Segment reporting	Note 2. Segment reporting Accounting policy Operating segments are presented on a basis consistent with information provided internally to Westpac’s key decision makers and reflects the management of the business, rather than the legal structure of the Group. Internally, Westpac uses ‘cash earnings’ in assessing the financial performance of its divisions. Management believes this allows the Group to: ▪ more effectively assess current year performance against prior years; ▪ compare performance across business divisions; and ▪ compare performance across peer companies. Cash earnings is viewed as a measure of the level of profit that is generated by ongoing operations and is therefore considered in assessing distributions, including dividends. Cash earnings is neither a measure of cash flow nor net profit determined on a cash accounting basis, as it includes both cash and non-cash adjustments to statutory net profit. To determine cash earnings, three categories of adjustments are made to statutory results: ▪ material items that key decision makers at the Westpac Group believe do not reflect ongoing operations; ▪ items that are not considered when dividends are recommended, such as the amortisation of intangibles, impact of Treasury shares and economic hedging impacts; and ▪ accounting reclassifications between individual line items that do not impact statutory results. Internal charges and transfer pricing adjustments have been reflected in the performance of each operating segment. Inter-segment pricing is determined on an arm’s length basis. Reportable operating segments On 19 March 2019, the Group announced changes to the way it supports customer’s wealth and insurance needs, realigning its BTFG businesses into expanded Consumer and Business divisions and exiting the provision of personal financial advice. As a result, the insurance business was transferred to Consumer, the funds management business was transferred to Business, and the Advice business and certain support functions of BTFG Australia were transferred to Group Businesses. Changes to the Group’s organisational structure were effective from 1 April 2019 and the results of the operating segments for 2018 and 2017 have been restated. The operating segments are defined by the customers they service and the services they provide: ▪ Consumer: - is responsible for sales and service of banking and financial products and services to consumer customers in Australia; - is also responsible for the Group's Australian insurance business, which covers the manufacture and distribution of life, general and lenders mortgage insurance; and - operates under the Westpac, St.George, BankSA, Bank of Melbourne, RAMS and BT brands. ▪ Business: - is responsible for sales and service of banking and financial products and services for SME and commercial business customers in Australia. SME and Commercial business customers typically have facilities up to approximately $150 million; - is responsible for Private Wealth, serving the banking needs of high net worth customers across the banking brands; - is responsible for the manufacture and distribution of investments (including margin lending and equities broking), superannuation and retirement products as well as wealth administration platforms; and - operates under the Westpac, St.George, BankSA, Bank of Melbourne and BT brands. ▪ Westpac Institutional Bank (WIB): - is responsible for delivering a broad range of financial products and services to commercial, corporate, institutional and government customers with connections to Australia and New Zealand; - services include financing, transactional banking, financial and debt capital markets; - customers are supported throughout Australia, as well as via branches and subsidiaries located in New Zealand, US, UK and Asia; and - also responsible for Westpac Pacific, providing a range of banking services in Fiji and Papua New Guinea. ▪ Westpac New Zealand: - is responsible for sales and service of banking, wealth and insurance products to customers in New Zealand; - customer base includes consumers, business and institutional customers; and - operates under the Westpac brand for banking products, the Westpac Life brand for life insurance products and the BT brand for wealth products. ▪ Group Businesses include: - Treasury, which is responsible for the management of the Group’s balance sheet including wholesale funding, capital and management of liquidity. Treasury also manages the interest rate risk and foreign exchange risks inherent in the balance sheet, including managing the mismatch between Group assets and liabilities. Treasury’s earnings are primarily sourced from managing the Group’s balance sheet and interest rate risk, (excluding Westpac New Zealand) within set risk limits; - Group Technology 1 , which comprises functions for the Australian businesses, is responsible for technology strategy and architecture, infrastructure and operations, applications development and business integration; - Core Support 2 , which comprises functions performed centrally, including Australian banking operations, property services, strategy, finance, risk, compliance, legal, human resources, and customer and corporate relations; - Following the Group’s decision to restructure the Wealth operating segment and to exit the Advice business in March 2019, the remaining Advice business (including associated remediation) and support functions have been transferred to Group Business; and - Group Businesses also includes earnings on capital not allocated to divisions, for certain intra-group transactions that facilitate presentation of performance of the Group’s operating segments, earnings from non-core asset sales, earnings and costs associated with the Group’s fintech investments, and certain other head office items such as centrally held provisions. 1. Costs are fully allocated to other divisions in the Group. 2. Costs are partially allocated to other divisions in the Group, with costs attributed to enterprise activity retained in Group Businesses. § For Westpac, AASB 9 and AASB 15 were adopted on 1 October 2018 and as comparatives were not restated, line item movements in our reported results are not directly comparable across periods. In order to provide the operational trends in business, we have revised the 2018 cash earnings comparatives as if the standards applied on 1 October 2017, except for expected credit loss provisioning which is not feasible. These adjustments do not impact 2018 cash earnings but do affect individual line items. These adjustments are comprised of: - Line fees: The Group has reclassified line fees (mostly Business) from non-interest income to net interest income to more appropriately reflect the relationship with drawn lines of credit; - Card scheme: Support payments received from Mastercard and Visa have been reclassified to non-interest income and related expenses have been reclassified to operating expenses; - Interest carrying adjustment: Interest on performing loans (stage 1 and stage 2 loans) is now measured on the gross loan val ue. Previously, interest on performing loans was recognised on the loan balance net of provisions. This adjustment increases interest income and impairment charges; - Other fees and expenses: The Group has restated the classification of a number of fees and expenses. This has resulted in the grossing up of net interest income, non-interest income, impairment charges and operating expenses; and - Merchant terminal costs: Some variable costs related to Westpac’s merchant terminal business have been reclassified between non-interest income and operating expenses. Comparatives have also been restated for: ▪ recent customer migration between divisions and accompanying impacts on divisional income statement and balance sheet; ▪ refinement in expense allocations; and ▪ changes to Group’s organisation structure following the realignment of the BTFG businesses into Consumer, Business and Group Businesses. The following tables present the segment results on a cash earnings basis for the Group: 1 Westpac Westpac Net cash 2019 Institutional New Group earnings Income $m Consumer Business Bank Zealand Businesses Total adjustment Statement Net interest income 7,942 5,092 1,443 1,860 616 16,953 (46) 16,907 Net fee income 608 464 610 163 (190) 1,655 — 1,655 Net wealth management and insurance income 425 899 — 177 (478) 1,023 6 1,029 Trading income 93 106 695 37 (24) 907 22 929 Other income 15 (5) (13) 46 74 117 12 129 Net operating income before operating expenses and impairment charges 9,083 6,556 2,735 2,283 (2) 20,655 (6) 20,649 Operating expenses (3,817) (2,805) (1,284) (939) (1,186) (10,031) (75) (10,106) Impairment (charges)/benefits (581) (272) (46) 10 95 (794) — (794) Profit before income tax 4,685 3,479 1,405 1,354 (1,093) 9,830 (81) 9,749 Income tax expense (1,397) (1,048) (386) (369) 225 (2,975) 16 (2,959) Net profit attributable to non-controlling interests — — (5) — (1) (6) — (6) Cash earnings for the year 3,288 2,431 1,014 985 (869) 6,849 (65) 6,784 Net cash earnings adjustments — (45) — (1) (19) (65) Net profit attributable to owners of Westpac Banking Corporation 3,288 2,386 1,014 984 (888) 6,784 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Statutory comparatives have not been restated. However, where applicable, cash earnings comparatives (excluding expected credit loss provisioning) have been restated to aid comparability. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Both statutory and cash earnings comparatives have been restated. Refer to Note 1 for further detail. Westpac Westpac Net cash 2018 Institutional New Group earnings Income $m Consumer Business Bank Zealand Businesses Total adjustment Statement Net interest income 7,850 5,284 1,442 1,799 812 17,187 (682) 16,505 Net fee income 659 511 610 164 (34) 1,910 514 2,424 Net wealth management and insurance income 549 1,012 212 149 95 2,017 44 2,061 Trading income 96 100 697 51 (18) 926 19 945 Other income 7 17 46 9 46 125 (53) 72 Net operating income before operating expenses and impairment charges 9,161 6,924 3,007 2,172 901 22,165 (158) 22,007 Operating expenses (3,774) (2,651) (1,449) (855) (969) (9,698) 132 (9,566) Impairment (charges)/benefits (486) (321) 16 (22) 1 (812) 102 (710) Profit before income tax 4,901 3,952 1,574 1,295 (67) 11,655 76 11,731 Income tax expense (1,478) (1,196) (476) (361) (75) (3,586) (46) (3,632) Net profit attributable to non-controlling interests — — (5) — 1 (4) — (4) Cash earnings for the year 3,423 2,756 1,093 934 (141) 8,065 30 8,095 Net cash earnings adjustments (15) (76) — 13 108 30 Net profit attributable to owners of Westpac Banking Corporation 3,408 2,680 1,093 947 (33) 8,095 Westpac Westpac Net cash 2017 Institutional New Group earnings Income $m Consumer Business Bank Zealand Businesses Total adjustment Statement Net interest income 7,733 4,950 1,354 1,706 712 16,455 (939) 15,516 Net fee income 745 518 628 197 82 2,170 433 2,603 Net wealth management and insurance income 488 951 93 148 130 1,810 (10) 1,800 Trading income 100 100 967 51 — 1,218 (16) 1,202 Other income 18 48 28 14 (31) 77 452 529 Net operating income before operating expenses and impairment charges 9,084 6,567 3,070 2,116 893 21,730 (80) 21,650 Operating expenses (3,548) (2,548) (1,358) (890) (834) (9,178) (104) (9,282) Impairment (charges)/benefits (600) (369) (79) 51 43 (954) 101 (853) Profit before income tax 4,936 3,650 1,633 1,277 102 11,598 (83) 11,515 Income tax expense (1,484) (1,096) (463) (360) (126) (3,529) 11 (3,518) Net profit attributable to non-controlling interests — — (7) — — (7) — (7) Cash earnings for the year 3,452 2,554 1,163 917 (24) 8,062 (72) 7,990 Net cash earnings adjustments (116) 150 — (14) (92) (72) Net profit attributable to owners of Westpac Banking Corporation 3,336 2,704 1,163 903 (116) 7,990 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Statutory comparatives have not been restated. However, where applicable, cash earnings comparatives (excluding expected credit loss provisioning) have been restated to aid comparability. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Both statutory and cash earnings comparatives have been restated. Refer to Note 1 for further detail. Reconciliation of cash earnings to net profit $m Cash earnings for the year 6,849 8,065 8,062 Cash earning adjustments: Amortisation of intangible assets — (17) (137) Fair value gain/(loss) on economic hedges (35) 126 (69) Ineffective hedges 20 (13) (16) Adjustments relating to Pendal (45) (73) 171 Treasury shares (5) 7 (21) Total cash earnings adjustments (65) 30 (72) Net profit attributable to owners of Westpac Banking Corporation 6,784 8,095 7,990 Revenue from products and services Details of revenue from external customers by product or service are disclosed in Notes 3 and 4. No single customer amounted to greater than 10% of the Group’s revenue. Geographic segments Geographic segments are based on the location of the office where the following items were recognised: 2019 2018 2017 $m % $m % $m % Revenue Australia 1 31,113 84.2 32,595 85.6 32,210 86.2 New Zealand 1 4,520 12.2 4,381 11.5 4,326 11.6 Other overseas 2 1,331 3.6 1,097 2.9 830 2.2 Total 36,964 100.0 38,073 100.0 37,366 100.0 Non-current assets 3 Australia 12,280 93.7 12,271 93.7 12,326 93.8 New Zealand 761 5.8 756 5.8 745 5.7 Other overseas 2 67 0.5 65 0.5 68 0.5 Total 13,108 100.0 13,092 100.0 13,139 100.0 1. Comparatives have been restated for consistency. 2. Other overseas included Pacific Islands, Asia, the Americas and Europe. 3. Non-current assets represent property and equipment and intangible assets.

Net interest income

Net interest income	12 Months Ended
	Sep. 30, 2019
Net interest income
Net interest income	Note 3. Net interest income 1 Accounting policy Interest income and interest expense for all interest earning financial assets and interest bearing financial liabilities at amortised cost or FVOCI, detailed within the table below, are recognised using the effective interest rate method. Net income from treasury’s interest rate and liquidity management activities and the cost of the Bank levy are included in net interest income. The effective interest rate method calculates the amortised cost of a financial instrument by discounting the financial instrument’s estimated future cash receipts or payments to their present value and allocates the interest income or interest expense, including any fees, costs, premiums or discounts integral to the instrument, over its expected life. Interest income is calculated based on the gross carrying amount of financial assets in stages 1 and 2 of the Group’s ECL model and on the carrying amount net of the provision for ECL for financial assets in stage 3. Refer to Note 13 for further details of the Group’s ECL model. Consolidated Parent Entity $m Interest income 2 Calculated using the effective interest rate method Cash and balances with central banks 334 326 242 311 301 Collateral paid 201 129 96 197 126 Available-for-sale securities — 1,914 1,795 — 1,743 Investment securities 1,919 — — 1,750 — Loans 30,029 29,583 28,438 26,171 25,763 Other financial assets 35 35 43 33 32 Due from subsidiaries — — — 4,274 4,225 Total interest income calculated using the effective interest rate method 32,518 31,987 30,614 32,736 32,190 Other Net ineffectiveness on qualifying hedges 28 (18) (22) 26 (22) Trading securities and financial assets measured at FVIS 662 564 574 633 521 Loans 14 38 66 14 38 Due from subsidiaries — — — 103 103 Total other 704 584 618 776 640 Total interest income 33,222 32,571 31,232 33,512 32,830 Interest expense Calculated using the effective interest rate method Collateral received (57) (45) (19) (51) (41) Deposits and other borrowings (7,967) (8,141) (8,026) (6,745) (6,949) Debt issues (4,706) (4,325) (3,448) (4,218) (3,820) Due to subsidiaries — — — (4,905) (4,840) Loan capital (776) (774) (693) (776) (774) Other financial liabilities (274) (318) (307) (273) (316) Total interest expense calculated using the effective interest rate method (13,780) (13,603) (12,493) (16,968) (16,740) Other Deposits and other borrowings (978) (880) (842) (961) (868) Trading liabilities (915) (959) (2,065) (828) (754) Debt issues (163) (155) (137) (140) (138) Bank levy (391) (378) (95) (391) (378) Due to subsidiaries — — — 78 (11) Other interest expense (88) (91) (84) (85) (88) Total other (2,535) (2,463) (3,223) (2,327) (2,237) Total interest expense (16,315) (16,066) (15,716) (19,295) (18,977) Net interest income 16,907 16,505 15,516 14,217 13,853 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Statutory comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Interest income includes items relating to customer refunds recognised as a reduction in interest income of $372 million (2018: $127 million, 2017: $58 million) for the Group, and $353 million (2018: $125 million) for the Parent Entity. Refer to Note 27 for further details.

Non-interest income

Non-interest income	12 Months Ended
	Sep. 30, 2019
Non-interest income
Non-interest income	Note 4. Non-interest income Accounting policy Non-interest income includes net fee income, net wealth management and insurance income, trading income and other income. Net fee income When another party is involved in providing goods or services to a Group customer, the Group assesses whether the nature of the arrangement with its customer is as a principal provider or an agent of another party. Where the Group is acting as an agent for another party, the income earned by the Group is the net consideration received (i.e. the gross amount received from the customer less amounts paid to a third party provider). As an agent, the net consideration represents fee income for facilitating the transaction between the customer and the third party provider with primary responsibility for fulfilling the contract. Fee income Fee income is recognised when the performance obligation is satisfied by transferring the promised good or service to the customer. Fee income includes facility fees, transaction fees and other non-risk fee income. Facility fees include certain line fees, annual credit card fees and fees for providing customer bank accounts. They are recognised over the term of the facility/period of service on a straight line basis. Transaction fees are earned for facilitating banking transactions such as foreign exchange fees, telegraphic transfers and issuing bank cheques. Fees for these one-off transactions are recognised once the transaction has been completed. Transaction fees are also recognised for credit card transactions including interchange fees net of scheme charges. These are recognised once the transaction has been completed, however, a component of interchange fees received is deferred as unearned income as the Group has a future service obligation to customers under the Group’s credit card reward programs. Other non-risk fee income includes advisory and underwriting fees which are recognised when the related service is completed. Income which forms an integral part of the effective interest rate of a financial instrument is recognised using the effective interest method and recorded in interest income (for example, loan origination fees). Fee expenses Fee expenses include incremental external costs that vary directly with the provision of goods or services to customers. An incremental cost is one that would not have been incurred if a specific good or service had not been provided to a specific customer. Fee expenses which form an integral part of the effective interest rate of a financial instrument are recognised using the effective interest method and recorded in net interest income. Fee expenses include the costs associated with credit card loyalty programs which are recognised as an expense when the services are provided on the redemption of points as well as merchant transaction costs. Net wealth management and insurance income Wealth management income Wealth management fees earned for the ongoing management of customer funds and investments are recognised when the performance obligation is satisfied which is over the period of management. Insurance premium income Insurance premium income includes premiums earned for life insurance, life investment, loan mortgage insurance and general insurance products: ▪ life insurance premiums with a regular due date are recognised as revenue on an accrual basis; ▪ life investment premiums include a management fee component which is recognised as income over the period the service is provided. The deposit components of life insurance and investment contracts are not revenue and are treated as movements in life insurance liabilities; ▪ general insurance premium comprises amounts charged to policyholders, excluding taxes, and is recognised based on the likely pattern in which the insured risk is likely to emerge. The portion not yet earned based on the pattern assessment is recognised as unearned premium liability. Insurance claims expense ▪ life and general insurance contract claims are recognised as an expense when the liability is established; ▪ claims incurred in respect of life investment contracts represent withdrawals and are recognised as a reduction in life insurance liabilities. Trading income ▪ realised and unrealised gains or losses from changes in the fair value of trading assets, liabilities and derivatives are recognised in the period in which they arise (except day one profits or losses which are deferred, refer to Note 22); ▪ net income related to Treasury’s interest rate and liquidity management activities is included in net interest income. Other income - dividend income ▪ dividends on quoted shares are recognised on the ex-dividend date; ▪ dividends on unquoted shares are recognised when the company’s right to receive payment is established. Consolidated Parent Entity $m Net fee income Facility fees 730 1,365 1,350 680 1,351 Transaction fees 1,225 1,182 1,258 1,046 939 Other non-risk fee income 2 (76) 98 229 (638) 54 Fee income 1,879 2,645 2,837 1,088 2,344 Credit card loyalty programs (121) (126) (152) (90) (101) Transaction fee related expenses (103) (95) (82) (76) (71) Fee expenses (224) (221) (234) (166) (172) Net fee income 1,655 2,424 2,603 922 2,172 Net wealth management and insurance income Wealth management income 2 276 1,145 997 — — Life insurance premium income 1,443 1,410 1,204 — — General insurance and lenders mortgage insurance (LMI) net premium earned 482 472 451 — — Life insurance investment and other income 3 409 666 544 — — General insurance and LMI investment and other income 52 50 77 — — Total insurance premium, investment and other income 2,386 2,598 2,276 — — Life insurance claims and changes in insurance liabilities (1,266) (1,396) (1,155) — — General insurance and LMI claims and other expenses (367) (286) (318) — — Total insurance claims, changes in liabilities and other expenses (1,633) (1,682) (1,473) — — Net wealth management and insurance income 1,029 2,061 1,800 — — Trading income 929 945 1,202 956 919 Other income Dividends received from subsidiaries — — — 2,215 2,013 Transactions with subsidiaries — — — 457 472 Dividends received from other entities 6 3 2 3 3 Net gain on sale of associates 4 38 — 279 — — Net gain on disposal of assets 61 24 6 60 — Net gain/(loss) on hedging overseas operations — — — (71) 19 Net gain/(loss) on derivatives held for risk management purposes 5 (11) 8 52 (11) 8 Net gain/(loss) on financial instruments measured at fair value (39) 38 11 (25) 36 Net gain/(loss) on disposal of controlled entities 3 (9) — — — Rental income on operating leases 72 107 143 50 77 Share of associates' net profit/(loss) (23) (10) 17 — — Other 2,6 22 (89) 19 6 5 Total other income 129 72 529 2,684 2,633 Total non-interest income 3,742 5,502 6,134 4,562 5,724 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Compliance, regulation and remediation provisions relating to customer refunds were recognised as a reduction of other non-risk fee income and wealth management income of $860 million (2018: $171 million; 2017: $111 million) for the Group, and $842 million (2018: $154 million) for the Parent Entity. Refer to Note 27 for further details. 3. Includes policy holder tax recoveries. 4. On 26 May 2017, the Group sold 60 million (19% of Pendal’s shares on issue) Pendal shares. 5. Income from derivatives held for risk management purposes reflects the impact of economic hedges of foreign currency capital and earnings. 6. The Group recognised $104 million of impairment on the remaining shareholdings of Pendal in 2018. Deferred income in relation to the credit card loyalty programs for the Group was $322 million as at 30 September 2019 (2018: $318 million) and $47 million for the Parent Entity (2018: $34 million). This will be recognised as fee income as the credit card reward points are redeemed. There were no other material contract assets or contract liabilities for the Group or the Parent Entity.

Operating expenses

Operating expenses	12 Months Ended
	Sep. 30, 2019
Operating expenses
Operating expenses	Note 5. Operating expenses 1,2 Consolidated Parent Entity $m Staff expenses Employee remuneration, entitlements and on-costs 4,320 4,292 4,133 3,611 3,537 Superannuation expense 3 378 386 380 313 315 Share-based payments 108 95 113 101 97 Restructuring costs 232 114 75 202 97 Total staff expenses 5,038 4,887 4,701 4,227 4,046 Occupancy expenses Operating lease rentals 658 632 648 597 565 Depreciation of property and equipment 222 245 291 176 196 Other 143 156 134 122 134 Total occupancy expenses 1,023 1,033 1,073 895 895 Technology expenses Amortisation and impairment of software assets 719 620 628 653 567 Depreciation and impairment of IT equipment 129 141 158 117 124 Technology services 810 721 639 670 564 Software maintenance and licences 371 342 313 321 289 Telecommunications 207 209 190 182 183 Data processing 83 77 80 81 76 Total technology expenses 2,319 2,110 2,008 2,024 1,803 Other expenses Professional and processing services 1,060 824 755 860 638 Amortisation and impairment of intangible assets and deferred expenditure 9 138 192 — 21 Postage and stationery 179 182 217 143 152 Advertising 245 173 155 196 127 Non-lending losses 58 133 73 43 112 Impairment on investments in subsidiaries — — — 136 44 Other 175 86 108 107 162 Total other expenses 1,726 1,536 1,500 1,485 1,256 Total operating expenses 10,106 9,566 9,282 8,631 8,000 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Operating expenses include costs recognised in relation to compliance, regulation and remediation provisions of $196 million (2018: $111 million; 2017: $12 million) for the Group, and $180 million (2018: $108 million) for the Parent entity. Refer to Note 27 for further details. 3. Superannuation expense includes both defined contribution and defined benefit expense. Further details of the Group's defined benefit plans are in Note 34.

Impairment charges

Impairment charges	12 Months Ended
	Sep. 30, 2019
Impairment charges
Impairment charges	Note 6. Impairment charges Accounting policy As comparatives have not been restated upon the adoption of AASB 9 the accounting policy applied in 2019 differs to that applied in comparative periods. The accounting policy applied in comparative periods is discussed in Note 39. The accounting policy applied in 2019 is as follows. Impairment charges are based on an expected loss model which measures the difference between the current carrying amount and the present value of expected future cash flows taking into account past experience, current conditions and multiple probability-weighted macroeconomic scenarios for reasonably supportable future economic conditions. Further details of the calculation of expected credit losses and the critical accounting assumptions and estimates relating to impairment charges are included in Note 13. Impairment charges are recognised in the income statement, with a corresponding amount recognised as follows: ▪ Loans, debt securities at amortised cost and due from subsidiaries balances: as a reduction of the carrying value of the financial asset through an offsetting provision account (refer to Note 13); ▪ Debt securities at FVOCI: in reserves in other comprehensive income with no reduction of the carrying value of the debt security (refer to Note 28); and ▪ Credit commitments: as a provision (refer to Note 27). Uncollectable loans A loan may become uncollectable in full or part if, after following the Group’s loan recovery procedures, the Group remains unable to collect that loan’s contractual repayments. Uncollectable amounts are written off against their related provision for expected credit losses, after all possible repayments have been received. Where loans are secured, amounts are generally written off after receiving the proceeds from the security, or in certain circumstances, where the net realisable value of the security has been determined and this indicates that there is no reasonable expectation of full recovery, write-off may be earlier. Unsecured consumer loans are generally written off after 180 days past due. The Group may subsequently be able to recover cash flows from loans written off. In the period which these recoveries are made, they are recognised in the income statement. The following table details impairment charges for year ending 30 September 2019 based on the requirements of AASB 9. Consolidated Parent Entity $m 2019 2019 Provisions raised/(released) Performing (209) (180) Non-performing 1,175 1,073 Recoveries (172) (143) Impairment charges 794 750 of which relates to: Loan and credit commitments 794 750 Impairment charges 794 750 As comparatives have not been restated for the adoption of AASB 9, the following table details impairment charges for comparative year ends based on the requirements of AASB 139. Once AASB 9 has been effective for all comparative year ends, this table will no longer be presented. Consolidated Parent Entity $m 2018 2017 2018 Individually assessed provisions raised 371 610 341 Write-backs (150) (288) (131) Recoveries (179) (168) (138) Collectively assessed provisions raised 668 699 610 Impairment charges 710 853 682 There were no impairment charges for debt securities at FVOCI, debt securities at amortised cost and due from subsidiaries balances.

Income tax

Income tax	12 Months Ended
	Sep. 30, 2019
Income tax
Income tax	Note 7. Income tax Accounting policy The tax expense for the year comprises current and deferred tax. Tax is recognised in the income statement, except to the extent that it relates to items recognised directly in other comprehensive income, in which case it is recognised in the statement of comprehensive income. Current tax is the tax payable for the year using enacted or substantively enacted tax rates and laws for each jurisdiction. Current tax also includes adjustments to tax payable for previous years. Deferred tax accounts for temporary differences between the carrying amounts of assets and liabilities in the financial statements and their values for taxation purposes. Deferred tax is determined using the enacted or substantively enacted tax rates and laws for each jurisdiction which are expected to apply when the assets will be realised or the liabilities settled. Deferred tax assets and liabilities have been offset where they relate to the same taxation authority, the same taxable entity or group, and where there is a legal right and intention to settle on a net basis. Deferred tax assets are recognised to the extent that it is probable that future taxable profits will be available to utilise the assets. Deferred tax is not recognised for the following temporary differences: ▪ the initial recognition of assets or liabilities in a transaction that is not a business combination and that affects neither the accounting nor taxable profit or loss; ▪ the initial recognition of goodwill in a business combination; and ▪ retained earnings in subsidiaries which the Parent Entity does not intend to distribute for the foreseeable future. The Parent Entity is the head entity of a tax consolidated group with its wholly owned, Australian subsidiaries. All entities in the tax consolidated group have entered into a tax sharing agreement which, in the opinion of the Directors, limits the joint and several liabilities in the case of a default by the Parent Entity. Current and deferred tax are recognised using a ‘group allocation basis’. As head entity, the Parent Entity recognises all current tax balances and deferred tax assets arising from unused tax losses and relevant tax credits for the tax-consolidated group. The Parent Entity fully compensates/is compensated by the other members for these balances. Critical accounting assumptions and estimates The Group operates in multiple tax jurisdictions and significant judgement is required in determining the worldwide current tax liability. There are many transactions with uncertain tax outcomes and provisions are determined based on the expected outcomes. Income tax expense The income tax expense for the year reconciles to the profit before income tax as follows: Consolidated Parent Entity $m Profit before income tax 9,749 11,731 11,515 9,398 10,895 Tax at the Australian company tax rate of 30% 2,925 3,519 3,455 2,819 3,269 The effect of amounts which are not deductible/(assessable) in calculating taxable income Hybrid capital distributions 72 69 64 72 69 Life insurance: Tax adjustment on policyholder earnings 8 24 8 — — Adjustment for life business tax rates (1) (1) (1) — — Dividend adjustments (1) (1) (3) (664) (604) Other non-assessable items (14) (5) (3) (2) (2) Other non-deductible items 12 64 32 9 34 Adjustment for overseas tax rates (32) (28) (30) (5) (3) Income tax (over)/under provided in prior years (10) 9 4 3 — Other items — (18) (8) 45 (12) Total income tax expense 2,959 3,632 3,518 2,277 2,751 Income tax analysis Income tax expense comprises: Current income tax 3,370 3,704 3,404 2,711 2,806 Movement in deferred tax (401) (81) 110 (437) (55) Income tax (over)/under provision in prior years (10) 9 4 3 — Total income tax expense 2,959 3,632 3,518 2,277 2,751 Total Australia 2,526 3,178 3,072 2,215 2,677 Total Overseas 433 454 446 62 74 Total income tax expense 1 2,959 3,632 3,518 2,277 2,751 1. As the Bank Levy is not a levy on income, it is not included in income tax. It is included in Note 3. The effective tax rate was 30.35% in 2019 (2018: 30.96%, 2017: 30.55%). Deferred tax assets The balance comprises temporary differences attributable to: Consolidated Parent Entity $m Amounts recognised in the income statements Provisions for impairment charges on loans 1 — 827 — 708 Provisions for expected credit losses on loans 1 802 — 695 — Provision for long service leave, annual leave and other employee benefits 309 323 286 301 Financial instruments 2 5 2 2 Property and equipment 195 196 173 177 Other provisions 2 590 225 561 207 All other liabilities 2 366 216 358 204 Total amounts recognised in the income statements 2,264 1,792 2,075 1,599 Amounts recognised directly in other comprehensive income Investment securities 10 — 11 — Cash flow hedges 52 50 28 31 Defined benefit 105 — 101 — Total amounts recognised directly in other comprehensive income 167 50 140 31 Amount recognised in opening retained profits Provision for expected credit losses on loans 266 — 227 — Provision for impairment on credit commitments 30 — 30 — Expected credit losses on investment securities 1 — 1 — Financial instruments 3 — — — Impact on adoption of AASB 9 1 300 — 258 — Gross deferred tax assets 2,731 1,842 2,473 1,630 Set-off of deferred tax assets and deferred tax liabilities (683) (662) (548) (528) Net deferred tax assets 2,048 1,180 1,925 1,102 Movements Opening balance 1,180 1,112 1,102 1,053 Impact on adoption of new accounting standards 1 300 — 258 — Restated opening balance 1,480 1,112 1,360 1,053 Recognised in the income statements 472 84 476 100 Recognised in other comprehensive income 117 (16) 109 (13) Set-off of deferred tax assets and deferred tax liabilities (21) — (20) (38) Closing balance 2,048 1,180 1,925 1,102 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Statutory comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Comparatives has been restated for consistency. Deferred tax liabilities The balance comprises temporary differences attributable to: Consolidated Parent Entity $m Amounts recognised in the income statements Finance lease transactions 230 158 206 161 Property and equipment 128 135 129 135 Life insurance assets 57 51 — — All other assets 312 312 213 213 Total amounts recognised in the income statements 727 656 548 509 Amounts recognised directly in other comprehensive income Available-for-sale securities — 10 — 7 Defined benefit — 14 — 15 Total amounts recognised directly in other comprehensive income — 24 — 22 Gross deferred tax liabilities 727 680 548 531 Set-off of deferred tax assets and deferred tax liabilities (683) (662) (548) (528) Net deferred tax liabilities 44 18 — 3 Movements Opening balance 18 10 3 — Recognised in the income statements 71 3 39 45 Recognised in other comprehensive income (24) 5 (22) (4) Set-off of deferred tax assets and deferred tax liabilities (21) — (20) (38) Closing balance 44 18 — 3 Unrecognised deferred tax balances The following potential deferred tax balances have not been recognised. The values shown are the gross balances and not tax effected. The tax effected balances would be approximately 30% of the values shown. Consolidated Parent Entity $m Unrecognised deferred tax asset Tax losses on revenue account 291 190 237 151 Unrecognised deferred tax liability Gross retained earnings of subsidiaries which the Parent Entity does not intend to distribute in the foreseeable future 51 58 — —

Earnings per share

Earnings per share	12 Months Ended
	Sep. 30, 2019
Earnings per share
Earnings per share	Note 8. Earnings per share Accounting policy Basic earnings per share (EPS) is calculated by dividing the net profit attributable to shareholders by the weighted average number of ordinary shares on issue during the year, adjusted for treasury shares. Diluted EPS is calculated by adjusting the basic EPS by assuming all dilutive potential ordinary shares are converted. Refer to Note 19 and Note 33 for further information on the potential dilutive instruments. Consolidated 2019 2018 2017 $m Basic Diluted Basic Diluted Basic Diluted Net profit attributable to shareholders 6,784 6,784 8,095 8,095 7,990 7,990 Adjustment for RSP dividends 1 (6) (6) (5) — (6) — Adjustment for potential dilution: Distributions to convertible loan capital holders 2 — 290 — 283 — 253 Adjusted net profit attributable to shareholders 6,778 7,068 8,090 8,378 7,984 8,243 Weighted average number of ordinary shares (millions) Weighted average number of ordinary shares on issue 3,456 3,456 3,414 3,414 3,364 3,364 Treasury shares (including RSP share rights) 1 (6) (6) (8) (8) (9) (9) Adjustment for potential dilution: Share-based payments — 1 — 3 — 4 Convertible loan capital 2 — 278 — 232 — 236 Adjusted weighted average number of ordinary shares 3,450 3,729 3,406 3,641 3,355 3,595 Earnings per ordinary share (cents) 196.5 189.5 237.5 230.1 238.0 229.3 1. RSP share rights are explained in Note 33. Some RSP share rights have not vested and are not ordinary shares but do receive dividends. These RSP dividends are deducted to show the profit attributable to ordinary shareholders. In 2019, RSP share rights were antidilutive. 2. The Group has issued convertible loan capital which may convert into ordinary shares in the future (refer to Note 19 for further details). These convertible loan capital instruments are all dilutive, and diluted EPS is therefore calculated as if the instruments had been converted at the beginning of the year or , if later, the instruments’ issue date.

Average balance sheet and inter

Average balance sheet and interest rates	12 Months Ended
	Sep. 30, 2019
Average balance sheet and interest rates
Average balance sheet and interest rates	Note 9. Average balance sheet and interest rates 1 The daily average balances of the Group’s interest earning assets and interest bearing liabilities are shown below along with their interest income or expense. 2019 2018 2017 Average Interest Average Average Interest Average Average Interest Average Balance Income Rate Balance Income Rate Balance Income Rate Consolidated $m $m % $m $m % $m $m % Assets Interest earning assets Collateral paid Australia 8,428 152 1.8 5,239 86 1.6 6,926 65 0.9 New Zealand 364 7 1.9 252 4 1.6 733 5 0.7 Other overseas 2,031 42 2.1 2,594 39 1.5 2,042 26 1.3 Trading securities and financial assets measured at FVIS: Australia 20,691 468 2.3 17,420 423 2.4 18,418 416 2.3 New Zealand 3,862 85 2.2 3,538 80 2.3 4,238 96 2.3 Other overseas 4,521 109 2.4 3,160 61 1.9 4,101 62 1.5 Available-for-sale securities: Australia — — — 55,458 1,692 3.1 52,457 1,573 3.0 New Zealand — — — 3,304 136 4.1 3,479 147 4.2 Other overseas — — — 2,778 86 3.1 2,272 75 3.3 Investment securities Australia 56,875 1,691 3.0 — — — — — — New Zealand 3,850 130 3.4 — — — — — — Other overseas 3,062 98 3.2 — — — — — — Loans and other receivables 2 : Australia 589,427 25,931 4.4 578,679 25,700 4.4 558,361 24,789 4.4 New Zealand 79,255 3,650 4.6 73,902 3,516 4.8 73,055 3,463 4.7 Other overseas 26,558 859 3.2 28,620 748 2.6 26,212 515 2.0 Total interest earning assets and interest income 798,924 33,222 4.2 774,944 32,571 4.2 752,294 31,232 4.2 Non-Interest earning assets Derivative financial instruments 3 25,959 26,443 28,897 Life insurance assets 9,610 10,664 12,447 All other assets 3 60,231 61,259 60,420 Total non-interest earning assets 3 95,800 98,366 101,764 Total assets 3 894,724 873,310 854,058 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. For 2019, loans and other receivables are net of Stage 3 provisions to reflect the adoption of AASB 9 where interest income is determined based on their carrying value, net of Stage 3 provisions. Stages 1 and 2 provisions were not included in the average interest earning assets balance as interest income is determined based on the gross value of loans and other receivables. For 2018 and 2017, loans and other receivables are net of provisions for impairment charges on loans as interest income is determined based on their carrying value, net of provisions for impairment charges on loans. 3. Derivative assets for the year ended 30 September 2018 were restated from $34,702 million to $26,443 million (30 September 2017: $37,673 million to $28,897 million) and all other assets were restated from $61,938 million to $61,259 million (30 September 2017: $60,111 million to $60,420 million). Accordingly, total non-interest earning assets and total assets were restated. 2019 2018 2017 Average Interest Average Average Interest Average Average Interest Average Balance Expense Rate Balance Expense Rate Balance Expense Rate Consolidated $m $m % $m $m % $m $m % Liabilities Interest bearing liabilities Collateral received: Australia 2,039 41 2.0 2,383 37 1.6 1,641 15 0.9 New Zealand 390 8 2.1 342 6 1.8 98 2 2.0 Other overseas 1,188 8 0.7 184 2 1.1 242 2 0.8 Deposits and other borrowings: Australia 425,799 7,023 1.6 422,006 7,308 1.7 409,586 7,344 1.8 New Zealand 54,720 1,235 2.3 51,368 1,196 2.3 51,042 1,173 2.3 Other overseas 26,270 687 2.6 26,599 517 1.9 24,085 351 1.5 Loan capital: Australia 15,080 632 4.2 15,028 635 4.2 15,841 638 4.0 New Zealand 1,777 91 5.1 1,645 84 5.1 43 2 4.7 Other overseas 1,324 53 4.0 1,324 55 4.2 1,324 53 4.0 Other interest bearing liabilities 2 : Australia 188,736 5,937 3.1 177,746 5,594 3.1 171,940 5,343 3.1 New Zealand 15,665 575 3.7 15,011 591 3.9 16,366 754 4.6 Other overseas 1,294 25 1.9 1,873 41 2.2 2,716 39 1.4 Total interest bearing liabilities and interest expense 734,282 16,315 2.2 715,509 16,066 2.2 694,924 15,716 2.3 Non-interest bearing liabilities Deposits and other borrowings: Australia 42,455 41,156 39,355 New Zealand 5,996 5,204 4,660 Other overseas 819 817 867 Derivative financial instruments 3 26,568 26,218 32,488 Life insurance liabilities 7,653 8,874 10,560 All other liabilities 3 13,187 13,484 12,628 Total non-interest bearing liabilities 3 96,678 95,753 100,558 Total liabilities 3 830,960 811,262 795,482 Shareholders’ equity 63,714 62,017 58,556 Non-controlling interests 50 31 20 Total equity 63,764 62,048 58,576 Total liabilities and equity 3 894,724 873,310 854,058 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Include net impact of Treasury balance sheet management activities and the Bank Levy. 3. Derivative liabilities for the year ended 30 September 2018 were restated from $37,504 million to $26,218 million (30 September 2017: $42,780 million to $32,488 million), and all other liabilities were restated from $12,199 million to $13,484 million (30 September 2017: $11,586 million to $12,628 million). Accordingly, total non-interest bearing liabilities, total liabilities and total liabilities and equity were restated. Net interest income may vary from year to year due to changes in the volume of, and interest rates associated with, interest earning assets and interest bearing liabilities. The table below allocates the change in net interest income between changes in volume and interest rate for those assets and liabilities. Calculation of variances ▪ volume changes are determined based on the movements in average asset and liability balances; ▪ interest rate changes are determined based on the change in interest rate associated with those assets and liabilities. Where variances arise due to a combination of volume and interest rate changes, the absolute dollar value of each change is allocated in proportion to their impact on the total change. 2019 2018 Consolidated Change due to Change due to $m Volume Rate Total Volume Rate Total Interest earning assets Collateral paid: Australia 52 14 66 (16) 37 21 New Zealand 2 1 3 (3) 2 (1) Other overseas (8) 11 3 7 6 13 Trading securities and financial assets measured at FVIS: Australia 79 (34) 45 (23) 30 7 New Zealand 7 (2) 5 (16) — (16) Other overseas 26 22 48 (13) 12 (1) Investment securities 2 : Australia 43 (44) (1) 90 29 119 New Zealand 22 (28) (6) (7) (4) (11) Other overseas 9 3 12 17 (6) 11 Loans and other receivables: Australia 477 (246) 231 952 (41) 911 New Zealand 255 (121) 134 39 14 53 Other overseas (54) 165 111 50 183 233 Total change in interest income 910 (259) 651 1,077 262 1,339 Interest bearing liabilities Collateral received: Australia (5) 9 4 7 15 22 New Zealand 1 1 2 5 (1) 4 Other overseas 11 (5) 6 — — — Deposits and other borrowings: Australia 66 (351) (285) 223 (259) (36) New Zealand 78 (39) 39 7 16 23 Other overseas (6) 176 170 37 129 166 Loan capital: Australia 2 (5) (3) (33) 30 (3) New Zealand 7 — 7 75 7 82 Other overseas — (2) (2) — 2 2 Other interest bearing liabilities: Australia 346 (3) 343 198 53 251 New Zealand 26 (42) (16) (74) (89) (163) Other overseas (13) (3) (16) (16) 18 2 Total change in interest expense 513 (264) 249 429 (79) 350 Change in net interest income: Australia 242 40 282 608 216 824 New Zealand 174 (70) 104 — 79 79 Other overseas (19) 35 16 40 46 86 Total change in net interest income 397 5 402 648 341 989 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. The volume rate calculations for 2019 Investment securities has been completed against the equivalent Available-for-sale securities.

Financial Assets and Financial

Financial Assets and Financial Liabilities	12 Months Ended
	Sep. 30, 2019
Financial Assets and Financial Liabilities
Financial Assets and Financial Liabilities	FINANCIAL ASSETS AND FINANCIAL LIABILITIES Accounting policy Recognition Purchases and sales by regular way of financial assets, except for loans and receivables, are recognised on trade-date, the date on which the Group commits to purchase or sell the asset. Loans and receivables are recognised on settlement date, when cash is advanced to the borrowers. Financial liabilities are recognised when an obligation arises. Derecognition Financial assets are derecognised when the rights to receive cash flows from the asset have expired, or when the Group has either transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full under a ‘pass through’ arrangement and transferred substantially all the risks and rewards of ownership. There may be situations where the Group has partially transferred the risks and rewards of ownership but has neither transferred nor retained substantially all the risks and rewards of ownership. In such situations, the asset continues to be recognised on the balance sheet to the extent of the Group’s continuing involvement in the asset. Financial liabilities are derecognised when the obligation is discharged, cancelled or expires. Where an existing financial liability is replaced by another from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, the exchange or modification is treated as a derecognition of the original liability and the recognition of a new liability, with the difference in the respective carrying amounts recognised in the income statement. The terms are deemed to be substantially different if the discounted present value of the cashflows under the new terms (discounted using the original effective interest rate) is at least 10% different from the discounted present value of the remaining cash flows of the original financial liability. Qualitative factors such as a change in the currency the instrument is denominated in, a change in the interest rate from fixed to floating and conversion features are also considered. Classification and measurement As comparatives have not been restated upon the adoption of AASB 9 the accounting policy applied in 2019 differs to that applied in comparative periods. The accounting policy applied in comparative periods is discussed in Note 39. The accounting policy applied in 2019 is as follows. Financial assets are grouped into the following classes: cash and balances with central banks; collateral paid, trading securities and financial assets measured at FVIS, derivative financial instruments, investment securities, loans, other financial assets and life insurance assets. Financial assets Financial assets are classified based on a) the business model within which the assets are managed, and b) whether the contractual cash flows of the instrument represent solely payment of principal and interest (SPPI). The Group determines the business model at the level that reflects how groups of financial assets are managed. When assessing the business model the Group considers factors including how performance and risks are managed, evaluated and reported and the frequency and volume of, and reason for, sales in previous periods and expectations of sales in future periods. When assessing whether contractual cash flows are SPPI, interest is defined as consideration primarily for the time value of money and the credit risk of the principal outstanding. The time value of money is defined as the element of interest that provides consideration only for the passage of time and not consideration for other risks or costs associated with holding the financial asset. Terms that could change the contractual cash flows so that they may not meet the SPPI criteria include contingent and leverage features, non-recourse arrangements, and features that could modify the time value of money. Debt instruments If the debt instruments have contractual cash flows which represent SPPI on the principal balance outstanding they are classified at: ▪ amortised cost if they are held within a business model whose objective is achieved through holding the financial asset to collect these cash flows; or ▪ FVOCI if they are held within a business model whose objective is achieved both through collecting these cash flows or selling the financial asset; or ▪ FVIS if they are held within a business model whose objective is achieved through selling the financial asset. Debt instruments are measured at FVIS where the contractual cash flows do not represent SPPI on the principal balance outstanding or where it is designated at FVIS to eliminate or reduce an accounting mismatch. Debt instruments at amortised cost are initially recognised at fair value and subsequently measured at amortised cost using the effective interest rate method. They are presented net of provisions for expected credit losses determined using the ECL model. Refer to Notes 6 and 13 for further details. Debt instruments at FVOCI are measured at fair value with unrealised gains and losses recognised in other comprehensive income except for interest income, impairment charges and foreign exchange gains and losses, which are recognised in the income statement. Impairment on debt instruments at FVOCI is determined using the ECL model and is recognised in the income statement with a corresponding amount in other comprehensive income. There is no reduction of the carrying value of the debt security which remains at fair value. The cumulative gain or loss recognised in other comprehensive income is subsequently recognised in the income statement when the instrument is derecognised. Debt instruments at FVIS are measured at fair value with subsequent changes in fair value recognised in the income statement. Equity securities Equity securities are measured at FVOCI where they: ▪ are not held for trading; and ▪ an irrevocable election is made by the Group. Otherwise, they are measured at FVIS. Equity securities at FVOCI are measured at fair value with unrealised gains and losses recognised in other comprehensive income, except for dividend income which is recognised in the income statement. The cumulative gain or loss recognised in other comprehensive income is not subsequently recognised in the income statement when the instrument is disposed. Equity securities at FVIS are measured at fair value with subsequent changes in fair value recognised in the income statement. Financial liabilities Financial liabilities are grouped into the following classes: collateral received, deposits and other borrowings, other financial liabilities, derivative financial instruments, debt issues and loan capital. Financial liabilities are measured at amortised cost if they are not held for trading or designated at FVIS, otherwise they are measured at FVIS. Financial assets and financial liabilities measured at fair value through income statement are recognised initially at fair value. All other financial assets and financial liabilities are recognised initially at fair value plus or minus directly attributable transaction costs respectively. Further details of the accounting policy for each category of financial asset or financial liability mentioned above is set out in the note for the relevant item. The Group’s policies for determining the fair value of financial assets and financial liabilities are set out in Note 22.

Trading securities and financia

Trading securities and financial assets measured at FVIS	12 Months Ended
	Sep. 30, 2019
Trading securities and financial assets measured at FVIS
Trading securities and financial assets measured at FVIS	Note 10. Trading securities and financial assets measured at FVIS 1 Accounting policy Trading securities Trading securities include actively traded debt (government and other) and equity instruments and those acquired for sale in the near term. As part of its trading activities, the Group also lends and borrows securities on a collateralised basis. Securities lent remain on the Group’s balance sheet and securities borrowed are not reflected on the Group’s balance sheet, as the risk and rewards of ownership remain with the initial holder. Where cash is provided as collateral, the amount advanced to or received from third parties is recognised as a receivable in collateral paid or as a borrowing in collateral received respectively. Reverse repurchase agreements Securities purchased under these agreements are not recognised on the balance sheet, as Westpac has not obtained the risks and rewards of ownership. The cash consideration paid is recognised as a reverse repurchase agreement, which forms part of a trading portfolio that is measured at fair value. Other financial assets measured at FVIS Other financial assets measured at FVIS include: ▪ non-trading securities managed on a fair value basis; ▪ non-trading debt securities that do not have contractual cash flows that represent SPPI on the principal balance outstanding; or ▪ non-trading equity securities for which we have not made irrevocable designation to be measured at FVOCI. Gains and losses on these financial assets are recognised in the income statement. Interest earned from debt securities is recognised in interest income (Note 3) while dividends on equity securities are recognised in non-interest income (Note 4). Consolidated Parent Entity $m Trading securities 22,210 18,777 16,519 20,719 17,671 Reverse repurchase agreements 6,833 1,379 6,887 6,731 1,379 Other financial assets measured at FVIS 2,738 2,976 2,577 2,115 2,365 Total trading securities and financial assets measured at FVIS 31,781 23,132 25,983 29,565 21,415 Trading securities include the following: Consolidated Parent Entity $m Government and semi-government securities 13,328 11,402 12,519 Other debt securities 5,354 5,049 5,057 Equity securities 8 11 8 Other 87 57 87 Total trading securities 18,777 16,519 17,671 Other financial assets measured at FVIS include: Consolidated Parent Entity $m Other debt securities 2,394 2,715 2,259 2,057 2,302 Equity securities 344 261 318 58 63 Total other financial assets measured at FVIS 2,738 2,976 2,577 2,115 2,365 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Available-for-sale securities _

Available-for-sale securities / Investment securities	12 Months Ended
	Sep. 30, 2019
Available-for-sale securities / Investment securities
Available-for-sale securities / Investment securities	Note 11. Available-for-sale securities/Investment securities Accounting policy As comparatives have not been restated upon the adoption of AASB 9 the accounting policy applied in 2019 differs to that applied in comparative years. The accounting policy applied in comparative years is discussed in Note 39. The accounting policy applied in 2019 is as follows. Investment securities include debt securities (government and other) and equity securities. It includes debt and equity securities that are measured at FVOCI and debt securities measured at amortised cost. These instruments are classified based on the criteria disclosed under the heading “Financial assets and financial liabilities” prior to Note 10. Debt securities measured at FVOCI Includes debt instruments that have contractual cash flows which represent SPPI on the principal balance outstanding and they are held within a business model whose objective is achieved both through collecting these cash flows or selling the financial asset. These securities are measured at fair value with gains and losses recognised in OCI except for interest income, impairment charges and foreign exchange gains and losses which are recognised in the income statement. Impairment is measured using the same ECL model applied to financial assets measured at amortised cost. Impairment is recognised in the income statement with a corresponding amount in OCI with no reduction of the carrying value of the debt security which remains at fair value. Refer to Note 13 for further details. The cumulative gain or loss recognised in OCI is subsequently recognised in the income statement when the instrument is disposed. Debt securities measured at amortised cost Include debt instruments that have contractual cash flows which represent SPPI on the principal balance outstanding and are held within a business model whose objective is achieved through holding the financial asset to collect these cash flows. These securities are initially recognised at fair value plus directly attributable transaction costs. They are subsequently measured at amortised cost using the effective interest rate method and are presented net of any provisions for ECL. Equity securities Equity securities are measured at FVOCI where they are not held for trading, the Group does not have control or significant influence over the investee and where an irrevocable election is made to measure them at FVOCI. These securities are measured at fair value with unrealised gains and losses recognised in OCI except for dividend income which is recognised in the income statement. The cumulative gain or loss recognised in OCI is not subsequently recognised in the income statement when the instrument is disposed. Transition to AASB 9 The following table shows how the available-for-sale securities under AASB 139 were classified on adoption of AASB 9 and the balance sheet line items they are reflected in. Refer to Note 1 for further details. Trading securities and financial assets Investment Securities measured at FVIS Debt securities at Equity securities at Debt securities at Equity securities at $m FVOCI FVOCI amortised cost FVIS Total Available-for-sale securities Consolidated 1 October 2018 Debt securities 59,924 — 811 — 60,735 Equity securities — 109 — 275 384 Total available-for-sale securities 59,924 109 811 275 61,119 Parent Entity 1 October 2018 Debt securities 56,436 — 10 — 56,446 Equity securities — 67 — — 67 Total available-for-sale securities 56,436 67 10 — 56,513 Balances recognised under AASB 9 Consolidated Parent Entity $m Investment securities Investment securities measured at FVOCI Government and semi-government debt securities 53,389 50,980 Other debt securities 19,058 17,325 Equity securities 134 66 Total investment securities measured at FVOCI 72,581 68,371 Investment securities measured at amortised cost Government and semi-government debt securities 736 23 Other debt securities 93 4 Total investment securities measured at amortised cost 829 27 Provisions for ECL on debt securities at amortised cost (9) — Total net investment securities measured at amortised cost 820 27 Total investment securities 73,401 68,398 The expected credit losses recognised in relation to investment securities – debt securities are detailed in Note 13. The following table shows the maturities of the Group’s investment securities as at 30 September 2019 and their weighted average yield. There are no tax-exempt securities. Within Over 1 Year Over 5 years Over No specific Weighted 1 year to 5 years to 10 years 10 years maturity Total average 2019 $m % $m % $m % $m % $m % $m % Carrying amount Government and semi-government debt securities 5,691 4.2 % 24,137 2.9 % 23,040 2.8 % 1,248 2.2 % — — 54,116 3.1 % Other debt securities 4,040 2.8 % 15,060 2.7 % 51 2.8 % — — — — 19,151 2.7 % Equity securities — — — — — — — — 134 — 134 — Total by maturity 9,731 39,197 23,091 1,248 134 73,401 The maturity profile is determined based upon contractual terms for investment securities. Investment securities include: ▪ US Government treasury notes of $10,398 million (2018: $5,229 million, 2017: $6,796 million); and ▪ total holdings of debt securities, where the aggregate book value exceeds 10% of equity attributable to Westpac’s owners: - Queensland Treasury Corporation totalling $13,218 million; - Australian Commonwealth Government totalling $10,191 million; and - New South Wales Treasury Corporation totalling $6,630 million. Balances recognised under AASB 139 Consolidated Parent Entity $m Available-for-sale securities Government and semi-government securities 42,979 43,382 40,345 Other debt securities 17,756 16,863 16,101 Equity securities 384 465 67 Total available-for-sale securities 61,119 60,710 56,513 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Statutory comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Loans

Loans	12 Months Ended
	Sep. 30, 2019
Loans
Loans	Note 12. Loans 1 Accounting policy As comparatives have not been restated upon the adoption of AASB 9 the accounting policy applied in 2019 differs to that applied in comparative years. The accounting policy applied in comparative years is discussed in Note 39. The accounting policy applied in 2019 is as follows. Loans are financial assets initially recognised at fair value plus directly attributable transaction costs and fees. Loans are subsequently measured at amortised cost using the effective interest rate method where they have contractual cash flows which represent SPPI on the principal balance outstanding and they are held within a business model whose objective is achieved through holding the loans to collect these cash flows. They are presented net of any provisions for ECL. Loans are subsequently measured at FVIS where they do not have cash flows which represent SPPI, are held within a business model whose objective is achieved by selling the financial asset, or are designated at FVIS to eliminate or reduce an accounting mismatch. Refer to Note 22 for balances which are measured at fair value and amortised cost. Loan products that have both mortgage and deposit facilities are presented gross on the balance sheet, segregating the asset and liability component, because they do not meet the criteria to be offset. Interest earned on these products is presented on a net basis in the income statement as this reflects how the customer is charged. The loan portfolio is disaggregated by location of booking office and product type, as follows: Consolidated Parent Entity $m 2019 2018 2019 2018 Australia Housing 449,201 444,741 449,192 444,730 Personal 2 21,247 22,997 20,848 22,008 Business 152,360 154,347 148,850 150,580 Total Australia 622,808 622,085 618,890 617,318 New Zealand Housing 47,731 44,772 — — Personal 2 1,709 1,869 — — Business 29,285 27,701 411 376 Total New Zealand 78,725 74,342 411 376 Total other overseas 16,845 16,077 15,738 14,881 Total loans 718,378 712,504 635,039 632,575 Provisions for ECL on loans (refer to Note 13) (3,608) — (3,103) — Provisions for impairment charges on loans (refer to Note 13) — (2,814) — (2,407) Total net loans 3 714,770 709,690 631,936 630,168 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Margin lending and other which were separately presented in prior years are now included in Personal loans. Comparatives have been revised for consistency. 3. Total net loans include securitised loans of $7,737 million (2018: $7,135 million) for the Group and $91,061 million (2018: $85,965 million) for the Parent Entity. The following table shows loans presented based on their industry classification: Consolidated $m Australia Accommodation, cafes and restaurants 8,039 8,297 8,177 7,536 7,490 Agriculture, forestry and fishing 9,210 8,642 8,182 7,953 7,667 Construction 7,186 6,751 6,043 5,797 5,596 Finance and insurance 14,069 14,059 12,923 14,298 13,175 Government, administration and defence 753 628 554 675 796 Manufacturing 9,337 9,298 9,054 9,140 9,342 Mining 2,869 3,311 3,025 3,641 4,415 Property 44,769 45,471 43,220 44,785 44,667 Property services and business services 14,035 13,477 12,050 11,674 10,703 Services 12,099 12,158 12,950 12,362 10,798 Trade 16,144 16,501 16,063 16,044 15,484 Transport and storage 8,268 8,853 8,624 9,015 9,940 Utilities 4,077 4,350 5,237 4,025 3,554 Retail lending 466,550 463,609 451,315 429,522 400,441 Other 5,403 6,680 4,229 2,777 1,587 Total Australia 622,808 622,085 601,646 579,244 545,655 New Zealand Accommodation, cafes and restaurants 355 323 290 256 182 Agriculture, forestry and fishing 8,553 8,138 7,772 7,788 6,860 Construction 493 502 447 396 359 Finance and insurance 3,009 2,903 2,478 2,682 1,725 Government, administration and defence 85 114 137 163 292 Manufacturing 1,913 2,199 2,090 2,324 2,110 Mining 278 206 141 280 407 Property 6,412 5,997 5,858 5,925 5,301 Property services and business services 1,182 1,073 1,113 1,084 925 Services 1,973 1,733 1,810 1,396 1,173 Trade 2,344 2,509 2,163 2,333 2,003 Transport and storage 1,131 1,029 1,080 1,257 1,094 Utilities 1,429 1,003 1,237 1,600 1,021 Retail lending 49,473 46,613 45,190 45,011 40,277 Other 95 — — — — Total New Zealand 78,725 74,342 71,806 72,495 63,729 Other overseas Accommodation, cafes and restaurants 109 112 97 118 111 Agriculture, forestry and fishing 150 19 5 12 568 Construction 55 71 55 147 247 Finance and insurance 2 4,628 4,774 4,289 2,767 4,297 Government, administration and defence 2 25 4 4 130 Manufacturing 3,784 3,257 2,982 2,619 3,848 Mining 468 322 349 535 778 Property 492 467 491 479 409 Property services and business services 1,610 1,684 540 526 403 Services 243 205 205 99 182 Trade 2 2,293 2,312 2,680 3,463 2,898 Transport and storage 997 1,232 1,389 1,186 1,099 Utilities 1,086 736 514 442 722 Retail lending 863 683 657 1,120 1,191 Other 65 178 76 — 77 Total other overseas 16,845 16,077 14,333 13,517 16,960 Total loans 718,378 712,504 687,785 665,256 626,344 Provisions for ECL on loans (refer to Note 13) (3,608) — — — — Provisions for impairment charges on loans (refer to Note 13) — (2,814) (2,866) (3,330) (3,028) Total net loans 714,770 709,690 684,919 661,926 623,316 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. 2018 comparatives have been revised for consistency. Parent Entity $m Australia Accommodation, cafes and restaurants 7,967 8,228 Agriculture, forestry and fishing 9,151 8,584 Construction 6,810 6,247 Finance and insurance 14,005 14,006 Government, administration and defence 746 620 Manufacturing 9,155 9,072 Mining 2,849 3,279 Property 44,707 45,471 Property services and business services 13,192 12,433 Services 11,853 11,891 Trade 15,961 16,291 Transport and storage 7,961 8,456 Utilities 4,053 4,324 Retail lending 465,535 462,568 Other 4,945 5,848 Total Australia 618,890 617,318 New Zealand Accommodation, cafes and restaurants — — Agriculture, forestry and fishing 5 2 Construction 8 5 Finance and insurance — — Government, administration and defence — — Manufacturing 94 98 Mining — — Property — — Property services and business services 7 8 Services — — Trade 297 263 Transport and storage — — Utilities — — Retail lending — — Other — — Total New Zealand 411 376 Other overseas Accommodation, cafes and restaurants 67 70 Agriculture, forestry and fishing 130 4 Construction 47 59 Finance and insurance 2 4,624 4,769 Government, administration and defence 2 24 Manufacturing 3,780 3,253 Mining 465 323 Property 226 234 Property services and business services 1,528 1,595 Services 216 187 Trade 2 2,115 2,126 Transport and storage 886 1,127 Utilities 1,036 734 Retail lending 587 277 Other 29 99 Total other overseas 15,738 14,881 Total loans 635,039 632,575 Provisions for ECL on loans (3,103) — Provisions for impairment charges on loans — (2,407) Total net loans 631,936 630,168 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. 2018 comparatives have been restated for consistency. The following table shows the consolidated contractual maturity distribution of all loans by industry as at 30 September 2019: Consolidated 2019 $m Up to 1 year 1 to 5 years Over 5 years Total Loans by type of customer in Australia Accommodation, cafes and restaurants 2,776 4,883 380 8,039 Agriculture, forestry and fishing 2,676 5,967 567 9,210 Construction 1,785 4,514 887 7,186 Finance and insurance 6,278 5,054 2,737 14,069 Government, administration and defence 286 189 278 753 Manufacturing 3,420 5,413 504 9,337 Mining 353 1,734 782 2,869 Property 18,410 24,821 1,538 44,769 Property services and business services 3,011 8,969 2,055 14,035 Services 3,915 6,395 1,789 12,099 Trade 7,314 7,649 1,181 16,144 Transport and storage 1,603 5,758 907 8,268 Utilities 1,009 2,839 229 4,077 Retail lending 21,725 12,394 432,431 466,550 Other 718 3,511 1,174 5,403 Total Australia 75,279 100,090 447,439 622,808 Total New Zealand 19,124 12,790 46,811 78,725 Total other overseas 6,021 9,529 1,295 16,845 Total loans 100,424 122,409 495,545 718,378 2019 2018 Loans at Loans at Loans at Loans at variable fixed variable fixed Consolidated interest interest interest interest $m rates rates Total rates rates Total Interest rate segmentation of Group loans maturing after one year By offices in Australia 418,494 129,035 547,529 423,886 127,077 550,963 By offices in New Zealand 1 9,102 50,499 59,601 10,634 45,852 56,486 By offices in other overseas 1 9,881 943 10,824 8,182 927 9,109 Total loans maturing after one year 437,477 180,477 617,954 442,702 173,856 616,558 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Provisions for expected credit

Provisions for expected credit losses/impairment charges	12 Months Ended
	Sep. 30, 2019
Provisions for expected credit losses/impairment charges
Provisions for expected credit losses/impairment charges	Note 13. Provisions for expected credit losses/impairment charges Accounting policy As comparatives have not been restated upon the adoption of AASB 9 the accounting policy applied in 2019 differs to that applied in comparative years. The accounting policy applied in comparative years is discussed in Note 39. The accounting policy applied in 2019 is as follows. Note 6 provides details of impairment charges. Impairment under AASB 9 applies to all financial assets at amortised cost, lease receivables, debt securities measured at FVOCI and credit commitments. The ECL determined under AASB 9 is recognised as follows: ▪ Loans (including lease receivables), debt securities at amortised cost and due from subsidiaries: as a reduction of the carrying value of the financial asset through an offsetting provision account (refer to Notes 11 and 12); ▪ Debt securities at FVOCI: in reserves in other comprehensive income with no reduction of the carrying value of the debt security itself (refer to Notes 11 and 28); and ▪ Credit commitments: as a provision (refer to Note 27). Measurement The Group calculates the provisions for ECL based on a three stage approach. ECL are a probability-weighted estimate of the cash shortfalls expected to result from defaults over the relevant timeframe. They are determined by evaluating a range of possible outcomes and taking into account the time value of money, past events, current conditions and forecasts of future economic conditions. The models use three main components to determine the ECL (as well as the time value of money) including: ▪ Probability of default (PD): the probability that a counterparty will default; ▪ Loss given default (LGD): the loss that is expected to arise in the event of a default; and ▪ Exposure at default (EAD): the estimated outstanding amount of credit exposure at the time of the default. Model stages The three stages are as follows: Stage 1: 12 months ECL - performing For financial assets where there has been no significant increase in credit risk since origination a provision for 12 months ECL is recognised. Stage 2: Lifetime ECL – performing For financial assets where there has been a significant increase in credit risk since origination but where the asset is still performing a provision for lifetime ECL is recognised. The indicators of a significant increase in credit risk are described on the following page. Stage 3: Lifetime ECL – non-performing For financial assets that are non-performing a provision for lifetime ECL is recognised. Indicators include a breach of contract with the Group such as a default on interest or principal payments, a borrower experiencing significant financial difficulties or observable economic conditions that correlate to defaults on a group of loans. Financial assets in stage 3 are those that are in default. A default occurs when Westpac considers that the customer is unlikely to repay its credit obligations in full, irrespective of recourse by the Group to actions such as realising security, or the customer is more than 90 days past due on any material credit obligation. This definition is aligned to the APRA regulatory definition of default. Collective and individual assessment Financial assets that are in stages 1 and 2 are assessed on a collective basis as are financial assets in stage 3 below specified thresholds. Financial assets that are collectively assessed are grouped in pools of similar assets with similar credit risk characteristics including the type of product and the customer risk grade. Those financial assets in stage 3 above the specified thresholds are assessed on an individual basis. Expected life In considering the lifetime time frame for expected credit losses in stages 2 and 3, the standard generally requires use of the remaining contractual life adjusted where appropriate for prepayments, extension and other options. For certain revolving credit facilities which include both a drawn and undrawn component (e.g. credit cards and revolving lines of credit), the Group’s contractual ability to demand repayment and cancel the undrawn commitment does not limit our exposure to credit losses to the contractual notice period. For these facilities, lifetime is based on historical behaviour. Movement between stages Assets may move in both directions through the stages of the impairment model. Assets previously in stage 2 may move back to stage 1 if it is no longer considered that there has been a significant increase in credit risk. Similarly, assets in stage 3 may move back to stage 1 or stage 2 if they are no longer assessed to be non-performing. Critical accounting assumptions and estimates Key judgements include when a significant increase in credit risk has occurred and estimation of forward looking macroeconomic information. Other factors which can impact the provision include the borrower’s financial situation, the realisable value of collateral, the Group’s position relative to other claimants, the reliability of customer information and the likely cost and duration of recovering the loan. Significant increase in credit risk Determining when a financial asset has experienced a significant increase in credit risk since origination is a critical accounting judgement which is primarily based on changes in internal customer risk grades since origination of the facility. A change in an internal customer risk grade is based on both quantitative and qualitative factors. The change in the internal customer risk grade that the Group uses to represent a significant increase in credit risk is based on a sliding scale. This means that a higher credit quality exposure at origination would require a more significant downgrade compared to a lower credit quality exposure before it is considered to have experienced a significant increase in credit risk. The Group does not rebut the presumption that instruments that are 30 days past due have experienced a significant increase in risk but this is used as a backstop rather than the primary indicator. In addition, retail accounts in hardship are considered to have experienced a significant increase in credit risk. The Group does not apply the low credit risk exemption which assumes investment grade facilities do not have a significant increase in credit risk. Forward looking macroeconomic information The measurement of ECL for each stage and the assessment of significant increase in credit risk consider information about past events and current conditions as well as reasonable and supportable projections of future events and economic conditions. The estimation of forward looking information is a critical accounting judgement. The Group considers three future macroeconomic scenarios including a base case scenario along with upside and downside scenarios. The macroeconomic variables used in these scenarios, based on current economic forecasts, include (but are not limited to) unemployment rates, real gross domestic product growth rates and residential and commercial property price indices. ▪ Base case scenario This scenario utilises the internal Westpac economics forecast used for strategic decision making and forecasting. ▪ Upside scenario This scenario represents a modest improvement on the base case scenario. ▪ Downside scenario This scenario represents a moderate recession. The macroeconomic scenarios are weighted based on the Group’s best estimate of the relative likelihood of each scenario. The weighting applied to each of the three macroeconomic scenarios takes into account historical frequency, current trends, and forward looking conditions. The macroeconomic variables and probability weightings of the three macroeconomic scenarios are subject to the approval of the Group Chief Financial Officer and Chief Risk Officer with oversight from the Board of Directors (and its Committees). Where appropriate, adjustments will be made to modelled outcomes to reflect reasonable and supportable information not already incorporated in the models. Judgements can change with time as new information becomes available which could result in changes to the provision for expected credit losses. Loans and credit commitments The reconciliation of the provision for ECL tables for loans and credit commitments as at 30 September 2019 below are based on the requirements of AASB 9. They have been determined by an aggregation of monthly movements over the year. The key line items in the reconciliation represent the following: ▪ The transfers between stages lines represent transfers between stage 1, stage 2 and stage 3 prior to remeasurement of the provision for ECL. ▪ The business activity during the year line represents new accounts originated during the year net of those that were derecognised due to final repayments during the year. ▪ The net remeasurement of ECL line represents the impact on the provision for ECL due to changes in credit quality during the period (including transfers between stages), changes due to forward looking economic scenarios and partial repayments and additional drawdowns on existing facilities over the year. ▪ Write-offs represent a reduction in the provision for ECL as a result of derecognition of exposures where there is no reasonable expectation of full recovery. Consolidated Collectively Individually Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 2,631 422 3,053 Restatement for adoption of AASB 9 877 1,884 1,272 (2,631) (422) 980 Restated provision for ECL as at 1 October 2018 877 1,884 1,272 — — 4,033 Transfers to Stage 1 1,458 (1,404) (54) — — — Transfers to Stage 2 (242) 956 (714) — — — Transfers to Stage 3 (5) (621) 626 — — — Business activity during the year 179 (19) (330) — — (170) Net remeasurement of provision for ECL (1,385) 874 1,647 — — 1,136 Write-offs — — (1,154) — — (1,154) Exchange rate and other adjustments 2 4 62 — — 68 Total provision for ECL on loans and credit commitments as at 30 September 2019 884 1,674 1,355 — — 3,913 Presented as: Provision for ECL on credit commitments (refer to Note 27) 121 178 6 — — 305 Provision for ECL on loans (refer to Note 12) 763 1,496 1,349 — — 3,608 Total provision for ECL on loans and credit commitments as at 30 September 2019 884 1,674 1,355 — — 3,913 Of which: Individually assessed provisions — — 412 — — 412 Collectively assessed provisions 884 1,674 943 — — 3,501 Total provision for ECL on loans and credit commitments as at 30 September 2019 884 1,674 1,355 — — 3,913 The provisions for ECL on loans can be further disaggregated into the following classes: Consolidated Collectively Individually Housing loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 385 97 482 Restatement for adoption of AASB 9 130 351 501 (385) (97) 500 Restated provision for ECL as at 1 October 2018 130 351 501 — — 982 Transfers to Stage 1 343 (317) (26) — — — Transfers to Stage 2 (38) 396 (358) — — — Transfers to Stage 3 — (145) 145 — — — Business activity during the year 17 (35) (141) — — (159) Net remeasurement of provision for ECL (289) 104 567 — — 382 Write-offs — — (119) — — (119) Exchange rate and other adjustments — — 22 — — 22 Total provision for ECL on loans and credit commitments as at 30 September 2019 163 354 591 — — 1,108 Presented as: Provision for ECL on credit commitments (refer to Note 27) 5 2 — — — 7 Provision for ECL on loans (refer to Note 12) 158 352 591 — — 1,101 Total provision for ECL on loans and credit commitments as at 30 September 2019 163 354 591 — — 1,108 Consolidated Collectively Individually Personal loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 761 3 764 Restatement for adoption of AASB 9 263 589 240 (761) (3) 328 Restated provision for ECL as at 1 October 2018 263 589 240 — — 1,092 Transfers to Stage 1 849 (839) (10) — — — Transfers to Stage 2 (148) 368 (220) — — — Transfers to Stage 3 (2) (350) 352 — — — Business activity during the year 62 (18) (160) — — (116) Net remeasurement of provision for ECL (757) 708 838 — — 789 Write-offs — — (822) — — (822) Exchange rate and other adjustments 1 1 30 — — 32 Total provision for ECL on loans and credit commitments as at 30 September 2019 268 459 248 — — 975 Presented as: Provision for ECL on cedit commitments (refer to Note 27) 36 35 — — — 71 Provision for ECL on loans (refer to Note 12) 232 424 248 — — 904 Total provision for ECL on loans and credit commitments as at 30 September 2019 268 459 248 — — 975 Consolidated Collectively Individually Business loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 1,485 322 1,807 Restatement for adoption of AASB 9 484 944 531 (1,485) (322) 152 Restated provision for ECL as at 1 October 2018 484 944 531 — — 1,959 Transfers to Stage 1 266 (248) (18) — — — Transfers to Stage 2 (56) 192 (136) — — — Transfers to Stage 3 (3) (126) 129 — — — Business activity during the year 100 34 (29) — — 105 Net remeasurement of provision for ECL (339) 62 242 — — (35) Write-offs — — (213) — — (213) Exchange rate and other adjustments 1 3 10 — — 14 Total provision for ECL on loans and credit commitments as at 30 September 2019 453 861 516 — — 1,830 Presented as: Provision for ECL on credit commitments (refer to Note 27) 80 141 6 — — 227 Provision for ECL on loans (refer to Note 12) 373 720 510 — — 1,603 Total provision for ECL on loans and credit commitments as at 30 September 2019 453 861 516 — — 1,830 The following table reconciles the 30 September 2019 provision for ECL on loans and commitments for the Parent Entity based on the requirements of AASB 9. Parent Entity Collectively Individually Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 2,238 375 2,613 Restatement for adoption of AASB 9 741 1,605 1,113 (2,238) (375) 846 Restated provision for ECL as at 1 October 2018 741 1,605 1,113 — — 3,459 Transfers to Stage 1 1,191 (1,153) (38) — — — Transfers to Stage 2 (220) 860 (640) — — — Transfers to Stage 3 (3) (554) 557 — — — Business activity during the year 168 7 (358) — — (183) Net remeasurement of provision for ECL (1,130) 654 1,552 — — 1,076 Write-offs — — (1,023) — — (1,023) Exchange rate and other adjustments — 1 48 — — 49 Total provision for ECL on loans and credit commitments as at 30 September 2019 747 1,420 1,211 — — 3,378 Presented as: Provision for ECL on credit commitments (refer to Note 27) 107 163 5 — — 275 Provision for ECL on loans (refer to Note 12) 640 1,257 1,206 — — 3,103 Total provision for ECL on loans and credit commitments as at 30 September 2019 747 1,420 1,211 — — 3,378 Of which: Individually assessed provisions — — 364 — — 364 Collectively assessed provisions 747 1,420 847 — — 3,014 Total provision for ECL on loans and credit commitments as at 30 September 2019 747 1,420 1,211 — — 3,378 Parent Entity Collectively Individually Housing loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 516 82 598 Restatement for adoption of AASB 9 105 334 402 (516) (82) 243 Restated provision for ECL as at 1 October 2018 105 334 402 — — 841 Transfers to Stage 1 322 (302) (20) — — — Transfers to Stage 2 (36) 386 (350) — — — Transfers to Stage 3 — (141) 141 — — — Business activity during the year 15 (33) (127) — — (145) Net remeasurement of provision for ECL (265) 91 606 — — 432 Write-offs — — (115) — — (115) Exchange rate and other adjustments — — 20 — — 20 Total provision for ECL on loans and credit commitments as at 30 September 2019 141 335 557 — — 1,033 Presented as: Provision for ECL on credit commitments (refer to Note 27) 4 1 — — — 5 Provision for ECL on loans (refer to Note 12) 137 334 557 — — 1,028 Total provision for ECL on loans and credit commitments as at 30 September 2019 141 335 557 — — 1,033 The provisions for ECL on loans can be further disaggregated into the following classes: Parent Entity Collectively Individually Personal loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 524 3 527 Restatement for adoption of AASB 9 215 540 200 (524) (3) 428 Restated provision for ECL as at 1 October 2018 215 540 200 — — 955 Transfers to Stage 1 635 (633) (2) — — — Transfers to Stage 2 (138) 319 (181) — — — Transfers to Stage 3 (1) (311) 312 — — — Business activity during the year 62 (11) (158) — — (107) Net remeasurement of provision for ECL (544) 497 753 — — 706 Write-offs — — (733) — — (733) Exchange rate and other adjustments — — 22 — — 22 Total provision for ECL on loans and credit commitments as at 30 September 2019 229 401 213 — — 843 Presented as: Provision for ECL on credit commitments (refer to Note 27) 29 32 — — — 61 Provision for ECL on loans (refer to Note 12) 200 369 213 — — 782 Total provision for ECL on loans and credit commitments as at 30 September 2019 229 401 213 — — 843 Parent Entity Collectively Individually Business loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 1,198 290 1,488 Restatement for adoption of AASB 9 421 731 511 (1,198) (290) 175 Restated provision for ECL as at 1 October 2018 421 731 511 — — 1,663 Transfers to Stage 1 234 (218) (16) — — — Transfers to Stage 2 (46) 155 (109) — — — Transfers to Stage 3 (2) (102) 104 — — — Business activity during the year 91 51 (73) — — 69 Net remeasurement of provision for ECL (321) 66 193 — — (62) Write-offs — — (175) — — (175) Exchange rate and other adjustments — 1 6 — — 7 Total provision for ECL on loans and credit commitments as at 30 September 2019 377 684 441 — — 1,502 Presented as: Provision for ECL on credit commitments (refer to Note 27) 74 130 5 — — 209 Provision for ECL on loans (refer to Note 12) 303 554 436 — — 1,293 Total provision for ECL on loans and credit commitments as at 30 September 2019 377 684 441 — — 1,502 Impact of changes in credit exposures on the provision for ECL ▪ Stage 1 exposures had a net increase of $7.6 billion for the Group and $4.1 billion for the Parent Entity driven by housing and business portfolio growth, partly offset by net transfers from Stage 1 to Stage 2 and Stage 3 and repayments. Stage 1 ECL has a marginal increase driven by the exposure growth. ▪ Stage 2 credit exposures reduced by $2.1 billion for both the Group and the Parent Entity mainly driven by reduction in Stage 2 balances in personal portfolio. The Stage 2 exposure decrease has been driven by lower delinquent balances in the Australian personal portfolio. Stage 2 ECL has decreased. ▪ Stage 3 credit exposures had a net increase of $0.9 billion for both the Group and the Parent Entity driven by net transfers to Stage 3 from Stage 1 and Stage 2 with the increase driven by housing and business portfolio. The increase in Stage 3 exposures is in line with increase in 90 days past due for the home loans portfolio. Stage 3 ECL has increased in line with the increase in Stage 3 exposures. Sensitivity of the provision for ECL As noted in the accounting policy, the critical accounting assumptions in determining the provision for ECL are the determination of a significant increase in credit risk and the use of probability weighted forward looking macroeconomic scenarios. Staging sensitivity If 1% of the stage 1 gross exposure from loans and credit commitments (calculated on a 12 month ECL) was reflected in stage 2 (calculated on a lifetime ECL) the provision for ECL would increase by $236 million for the Group and $209 million for the Parent Entity based on applying the average provision coverage ratios by stage to the movement in the gross exposure by stage. Weighting of macroeconomic scenarios The Group uses three macro-economic scenarios which are probability weighted based on the Group’s best estimate of the relative likelihood of each scenario. The Group assigned a weighting of 62.5% to the base case scenario, 27.5% to the downside scenario and 10% to the upside scenario as at 30 September 2019. During September 2019 there was a 2.5% reduction in the weighting on the base case scenario from 65% and a corresponding 2.5% increase in the weighting on the downside scenario from 25%. The increase in weighting to the downside scenario was primarily driven by global economic uncertainties. The base case scenario utilises Westpac Economics forecasts and assumes the following one-year outlook: a GDP growth of 2.5%, a reduction in the rate of growth in commercial property prices to 1.1%, a return to positive growth of 1% in residential property prices, a 50bps reduction in the cash rate to 0.50% and an increase in the unemployment rate to 5.6%. The downside scenario represents a moderate recession. In this scenario there is negative GDP growth, declines in commercial and residential property prices and an increase in the unemployment rate. The following table shows the reported provision for ECL based on the probability weighted scenarios and what the provisions for ECL would be assuming a 100% weighting is applied to the base case scenario and to the downside scenario (with all other assumptions held constant). $m Consolidated Parent Entity Reported probability-weighted ECL 3,913 3,378 100% base case ECL 2,748 2,387 100% downside ECL 7,065 6,067 Investment Securities – debt securities The following table reconciles the 30 September 2019 provision for ECL on debt securities based on the requirements of AASB 9. Total Debt Investment Debt securities at securities - securities at amortised debt $m FVOCI 1 cost securities Consolidated Provision for impairment charges as at 30 September 2018 — — — Restatement for adoption of AASB 9 2 9 11 Restated provision for ECL as at 1 October 2018 2 9 11 Stage 1 - change in the provision during the year — — — Total provision for ECL on investment securities - debt securities as at 30 September 2019 2 9 11 Parent Entity Provision for impairment charges as at 30 September 2018 — — — Restatement for adoption of AASB 9 2 — 2 Restated provision for ECL as at 1 October 2018 2 — 2 Stage 1 - change in the provision during the year — — — Total provision for ECL on investment securities - debt securities as at 30 September 2019 2 — 2 1. Impairment on debt securities at FVOCI is recognised in the income statement with a corresponding amount in other comprehensive income (refer to Note 28). There is no reduction of the carrying value of the debt securities which remain at fair value (refer to Note 11). As comparatives have not been restated for the adoption of AASB 9, the following table reconciles the provision for impairment charges on loans and credit commitments based on the requirements of AASB 139 for prior years. Consolidated Parent Entity $m Individually assessed provisions Opening balance 480 869 417 Provisions raised 371 610 341 Write-backs (150) (288) (131) Write-offs (269) (688) (248) Interest adjustment (11) (16) (11) Other adjustments 1 (7) 7 Closing balance 422 480 375 Collectively assessed provisions Opening balance 2,639 2,733 2,180 Provisions raised 668 699 610 Write-offs (858) (968) (742) Interest adjustment 179 188 148 Other adjustments 3 (13) 42 Closing balance 2,631 2,639 2,238 Total provisions for impairment charges on loans and credit commitments 3,053 3,119 2,613 Less provisions for credit commitments (refer to Note 27) (239) (253) (206) Total provisions for impairment charges on loans 2,814 2,866 2,407 There were no provisions for impairment charges in prior years under AASB 139 for the securities included in investment securities (which were previously classified as Available-for-sale securities) or for due from subsidiaries as no impairment had been incurred. The following table presents provisions for expected credit losses (for 30 September 2019) and provisions for impairment charges (for prior years) on loans and credit commitments by industry classification for the past five years: Consolidated 2019 2018 2017 2016 2015 $m % $m % $m % $m % $m % Australia Accommodation, cafes and restaurants 75 1.9 62 2.0 67 2.1 95 2.7 86 2.6 Agriculture, forestry and fishing 93 2.4 69 2.3 59 1.9 74 2.1 115 3.4 Construction 148 3.8 93 3.0 86 2.8 86 2.4 85 2.5 Finance and insurance 55 1.4 67 2.2 53 1.7 131 3.7 124 3.7 Manufacturing 111 2.8 196 6.4 164 5.3 278 7.7 219 6.6 Mining 36 0.9 91 3.0 131 4.2 246 6.8 190 5.7 Property 216 5.5 204 6.7 240 7.7 287 8.0 314 9.4 Property services and business services 230 5.9 128 4.2 155 5.0 216 6.0 95 2.8 Services 175 4.5 137 4.5 126 4.0 116 3.2 56 1.7 Trade 242 6.2 199 6.5 183 5.9 213 5.9 209 6.3 Transport and storage 109 2.8 79 2.6 92 2.9 73 2.0 142 4.3 Utilities 17 0.4 13 0.4 15 0.5 9 0.2 27 0.8 Retail lending 1,890 48.3 1,200 39.3 1,229 39.4 1,102 30.6 1,046 31.4 Other 109 2.8 106 3.5 92 2.9 138 3.8 119 3.6 Total Australia 1 3,506 89.6 2,644 86.6 2,692 86.3 3,064 85.1 2,827 84.8 New Zealand Accommodation, cafes and restaurants 2 0.1 3 0.1 2 0.1 2 0.1 1 — Agriculture, forestry and fishing 67 1.7 77 2.5 93 3.0 120 3.3 64 1.9 Construction 9 0.2 16 0.5 9 0.3 9 0.2 9 0.3 Finance and insurance 2 0.1 3 0.1 3 0.1 4 0.1 3 0.1 Manufacturing 14 0.4 26 0.9 24 0.8 53 1.5 57 1.7 Mining — — 1 — 1 — 15 0.4 14 0.4 Property 20 0.5 27 0.9 38 1.2 52 1.4 62 1.9 Property services and business services 5 0.1 8 0.2 11 0.3 21 0.6 22 0.6 Services 9 0.2 9 0.3 14 0.4 13 0.4 12 0.4 Trade 15 0.4 21 0.7 17 0.5 18 0.5 25 0.8 Transport and storage 3 0.1 5 0.2 5 0.2 7 0.2 7 0.2 Utilities 1 — 2 0.1 3 0.1 4 0.1 2 0.1 Retail lending 173 4.4 130 4.3 130 4.2 125 3.5 128 3.8 Other 7 0.2 1 — — — 2 0.1 1 — Total New Zealand 1 327 8.4 329 10.8 350 11.2 445 12.4 407 12.2 Total other overseas 80 2.0 80 2.6 77 2.5 93 2.5 98 3.0 Total provisions for ECL/ impairment charges on loans and credit commitments 3,913 100.0 3,053 100.0 3,119 100.0 3,602 100.0 3,332 100.0 1. Comparatives have been restated to include industry segmentation for collectively assessed provisions. The following table shows details of loan write-offs by industry classifications for the past five years: Consolidated $m Australia Accommodation, cafes and restaurants (12) (14) (38) (17) (40) Agriculture, forestry and fishing (4) (12) (10) (12) (36) Construction (13) (23) (30) (20) (40) Finance and insurance (4) (4) (6) (13) (12) Manufacturing (12) (12) (105) (21) (20) Mining (1) (14) (46) (18) (17) Property (31) (39) (76) (44) (104) Property services and business services (24) (44) (203) (43) (70) Services (7) (24) (97) (36) (18) Trade (62) (56) (59) (30) (56) Transport and storage (14) (17) (17) (48) (24) Utilities (1) (1) — (1) (2) Retail lending (903) (793) (898) (803) (658) Other (10) (5) (17) (13) (13) Total Australia (1,098) (1,058) (1,602) (1,119) (1,110) New Zealand Accommodation, cafes and restaurants — — — — — Agriculture, forestry and fishing (2) — — (1) (3) Construction — (1) (1) (1) — Finance and insurance — — — — — Manufacturing — — — — (1) Mining — — — — (28) Property — (13) (2) (10) (18) Property services and business services — — — (2) — Services — (1) — — (1) Trade (2) (1) (1) (1) (4) Transport and storage — — — — — Utilities — — — — — Retail lending (50) (53) (49) (51) (55) Other — — — (1) — Total New Zealand (54) (69) (53) (67) (110) Total other overseas (2) — (1) (3) (18) Total write-offs (1,154) (1,127) (1,656) (1,189) (1,238) Write-offs still under enforcement activity The amount of current year write-offs which remain subject to enforcement activity was $1,093 million for the Group and $962 million for the Parent Entity. The following table shows details of recoveries of loans by industry classifications for the past five years: Consolidated $m Recoveries Australia Accommodation, cafes and restaurants — 1 3 — — Agriculture, forestry and fishing — — — — — Construction 1 1 2 1 4 Finance and insurance — 1 1 34 8 Manufacturing 1 — 2 1 3 Mining — 1 1 — — Property 8 7 10 3 15 Property services and business services 1 1 3 2 2 Services — 1 — 2 1 Trade 2 2 3 1 1 Transport and storage 1 1 1 1 — Utilities — — — — — Retail lending 135 139 118 84 78 Other 5 — 5 2 1 Total Australia 154 155 149 131 113 Total New Zealand 18 24 19 6 18 Total other overseas — — — — — Total recoveries 172 179 168 137 131 Total write-offs (1,154) (1,127) (1,656) (1,189) (1,238) Net write-offs and recoveries (982) (948) (1,488) (1,052) (1,107)

Other financial assets

Other financial assets	12 Months Ended
	Sep. 30, 2019
Other financial assets
Other financial assets	Note 14. Other financial assets 1 Consolidated Parent Entity $m Accrued interest receivable 1,144 1,276 1,005 1,103 Securities sold not delivered 1,687 1,264 1,668 1,264 Trade debtors 998 1,056 517 514 Interbank lending 514 953 510 939 Clearing and settlement balances 750 736 706 678 Accrued fees and commissions 159 129 95 60 Other 115 103 114 108 Total other financial assets 5,367 5,517 4,615 4,666 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Life insurance assets and life

Life insurance assets and life insurance liabilities	12 Months Ended
	Sep. 30, 2019
Life insurance assets and life insurance liabilities
Life insurance assets and life insurance liabilities	Note 15. Life insurance assets and life insurance liabilities Accounting policy The Group conducts its life insurance business in Australia primarily through Westpac Life Insurance Services Limited and separate statutory funds registered under the Life Insurance Act 1995 (Life Act) and in New Zealand through Westpac Life-NZ-Limited which are separate statutory funds licensed under the Insurance (Prudential Supervision) Act 2010. Life insurance assets Life insurance assets, including investments in funds managed by the Group, are designated at FVIS. Changes in fair value are recognised in non-interest income. The determination of fair value of life insurance assets involves the same judgements as other financial assets, which are described in the critical accounting assumptions and estimates in Note 22. The Life Act places restrictions on life insurance assets, including that they can only be used: ▪ to meet the liabilities and expenses of that statutory fund; ▪ to acquire investments to further the business of the statutory fund; or ▪ as a distribution, when the statutory fund has met its solvency and capital adequacy requirements. Life insurance liabilities Life insurance liabilities primarily consist of life investment contract liabilities and life insurance contract liabilities. Claims incurred in respect of life investment contracts are withdrawals of customer deposits, and are recognised as a reduction in life insurance liabilities. Life investment contract liabilities Life investment contract liabilities are designated at FVIS. Fair value is the higher of the valuation of life insurance assets linked to the life investment contract, or the minimum current surrender value (the minimum amount the Group would pay to a policyholder if their policy is voluntarily terminated before it matures or the insured event occurs). Changes in fair value are recognised in non-interest income. Life insurance contract liabilities The value of life insurance contract liabilities is calculated using the margin on services methodology (MoS), specified in the Prudential Standard LPS 340 Valuation of Policy Liabilities. MoS accounts for the associated risks and uncertainties of each type of life insurance contract written. At each reporting date, planned profit margins and an estimate of future liabilities are calculated. Profit margins are released to non-interest income over the period that life insurance is provided to policyholders (Note 4). The cost incurred in acquiring specific insurance contracts is deferred provided that these amounts are recoverable out of planned profit margins. The deferred amounts are recognised as a reduction in life insurance policy liabilities and are amortised to non-interest income over the same period as the planned profit margins. External unit holder liabilities of managed investment schemes The life insurance statutory funds include controlling interests in managed investment schemes which are consolidated. When the managed investment scheme is consolidated, the external unit holder liabilities are recognised as a liability and included in life insurance liabilities. They are designated at FVIS. Critical accounting assumptions and estimates The key factors that affect the estimation of life insurance liabilities and related assets are: ▪ the cost of providing benefits and administering contracts; ▪ mortality and morbidity experience, which includes policyholder benefits enhancements; ▪ discontinuance rates, which affects the Group’s ability to recover the cost of acquiring new business over the life of the contracts; and ▪ the discount rate of projected future cash flows. Regulation, competition, interest rates, taxes, securities market conditions and general economic conditions also affect the estimation of life insurance liabilities. Life insurance assets Consolidated $m Investments held directly and in unit trusts Unit trusts 6,764 6,545 Equities 989 1,223 Debt securities 1,589 1,622 Loans and other assets 25 60 Total life insurance assets 9,367 9,450 There were no life insurance assets in the Parent Entity as at 30 September 2019 (2018: nil). Life insurance liabilities Consolidated Life investment Life insurance Reconciliation of movements in policy liabilities contracts contracts Total $m Opening balance 8,438 9,854 (841) (835) 7,597 9,019 Movements in policy liabilities reflected in the income statement 504 704 12 (6) 516 698 Contract contributions recognised in policy liabilities 898 738 — — 898 738 Contract withdrawals recognised in policy liabilities (1,218) (1,115) — — (1,218) (1,115) Contract fees, expenses and tax recoveries (73) (104) — — (73) (104) Change in external unit holders of managed investment schemes (343) (1,639) — — (343) (1,639) Closing balance 8,206 8,438 (829) (841) 7,377 7,597 There were no life insurance liabilities in the Parent Entity as at 30 September 2019 (2018: nil).

Deposits and other borrowings

Deposits and other borrowings	12 Months Ended
	Sep. 30, 2019
Deposits and other borrowings
Deposits and other borrowings	Note 16. Deposits and other borrowings Accounting policy Deposits and other borrowings are initially recognised at fair value and subsequently either measured at amortised cost using the effective interest rate method or at fair value. Deposits and other borrowings are designated at fair value if they are managed on a fair value basis, reduce or eliminate an accounting mismatch or contain an embedded derivative. Where they are measured at fair value, any changes in fair value (except those due to changes in credit risk) are recognised as non-interest income. The change in the fair value that is due to changes in credit risk is recognised in other comprehensive income except where it would create an accounting mismatch, in which case it is also recognised in the income statement. Refer to Note 22 for balances measured at fair value and amortised cost. Interest expense incurred is recognised in net interest income using the effective interest rate method. Consolidated Parent Entity $m Australia Certificates of deposit 26,259 28,746 26,259 28,746 Non-interest bearing, repayable at call 43,341 41,783 43,341 41,783 Other interest bearing at call 247,161 233,052 247,161 233,052 Other interest bearing term 158,564 171,832 158,564 171,832 Total Australia 475,325 475,413 475,325 475,413 New Zealand Certificates of deposit 1,058 1,116 — — Non-interest bearing, repayable at call 6,368 5,406 — — Other interest bearing at call 22,291 21,368 — — Other interest bearing term 31,084 29,897 — 3 Total New Zealand 60,801 57,787 — 3 Other overseas Certificates of deposit 11,414 11,672 11,414 11,672 Non-interest bearing, repayable at call 824 830 385 352 Other interest bearing at call 1,610 1,638 1,233 1,249 Other interest bearing term 13,273 11,945 13,073 11,779 Total other overseas 27,121 26,085 26,105 25,052 Total deposits and other borrowings 563,247 559,285 501,430 500,468 The following table shows average balances and average rates in each of the past three years for major categories of deposits: 2019 2018 2017 Average Average Average Average Average Average balance rate Balance rate balance rate Consolidated $m % $m % $m % Australia Non-interest bearing 42,455 41,156 39,355 Certificates of deposit 30,367 2.0 % 31,424 2.0 % 33,350 2.0 % Other interest bearing at call 237,420 1.1 % 228,328 1.2 % 222,122 1.1 % Other interest bearing term 158,012 2.4 % 162,254 2.5 % 154,114 2.7 % Total Australia 468,254 463,162 448,941 Overseas Non-interest bearing 6,815 6,021 5,527 Certificates of deposit 11,854 2.6 % 13,008 1.9 % 13,151 1.4 % Other interest bearing at call 23,616 1.1 % 23,017 1.2 % 24,163 1.3 % Other interest bearing term 45,520 3.0 % 41,942 2.8 % 37,813 2.7 % Total overseas 87,805 83,988 80,654 Certificates of deposit and term deposits All certificates of deposit and majority of term deposits issued by foreign offices were greater than US$100,000. The maturity profile of certificates of deposit and term deposits greater than US$100,000 issued by Australian operations is set out below: Between Between 6 Months Consolidated 2019 Less Than 3 and and $m 3 Months 6 Months 1 Year Over 1 Year Total Certificates of deposit greater than US$100,000 Term deposits greater than US$100,000

Other financial liabilities

Other financial liabilities	12 Months Ended
	Sep. 30, 2019
Other financial liabilities
Other financial liabilities	Note 17. Other financial liabilities 1 Accounting policy Other financial liabilities include liabilities measured at amortised cost as well as liabilities which are measured at FVIS. Financial liabilities measured at FVIS include: ▪ trading liabilities (i.e. securities sold short); and ▪ liabilities designated at fair value through income statement (i.e. certain repurchase agreements). Refer to Note 22 for balances measured at fair value and amortised cost. Repurchase agreements Where securities are sold subject to an agreement to repurchase at a predetermined price, they remain recognised on the balance sheet in their original category (i.e. ‘Trading securities’ or ‘Investment securities’). The cash consideration received is recognised as a liability (‘Repurchase agreements’). Repurchase agreements are designated at fair value where they are managed as part of a trading portfolio, otherwise they are measured on an amortised cost basis. Where a repurchase agreement is designated at fair value, subsequent to initial recognition, these liabilities are measured at fair value with changes in fair value (except credit risk) recognised through the income statement as they arise. The change in fair value that is attributable to credit risk is recognised in other comprehensive income except where it would create an accounting mismatch, in which case it is also recognised through the income statement. Consolidated Parent Entity $m Repurchase agreements 10,604 9,522 10,604 9,522 Interbank placements 9,884 8,848 9,834 8,829 Accrued interest payable 2,627 2,968 2,312 2,633 Securities purchased not delivered 1,398 1,343 1,395 1,343 Trade creditors and other accrued expenses 1,154 1,410 927 1,125 Settlement and clearing balances 1,222 1,347 1,197 1,333 Securities sold short 766 780 766 780 Other 1,560 1,887 1,481 1,701 Total other financial liabilities 28,105 27,266 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Debt issues

Debt issues	12 Months Ended
	Sep. 30, 2019
Debt issues
Debt issues	Note 18. Debt issues Accounting policy Debt issues are bonds, notes, commercial paper and debentures that have been issued by entities in the Group. Debt issues are initially measured at fair value and subsequently either measured at amortised cost using the effective interest rate method or at fair value. Debt issues are designated at fair value if they reduce or eliminate an accounting mismatch or contain an embedded derivative. The change in the fair value that is due to credit risk is recognised in other comprehensive income except where it would create an accounting mismatch, in which case it is also recognised in non-interest income. Refer to Note 22 for balances measured at fair value and amortised cost. Interest expense incurred is recognised within net interest income using the effective interest rate method. In the table below, the distinction between short-term (12 months or less) and long-term (greater than 12 months) debt is based on the original maturity of the underlying security. Consolidated Parent Entity $m Short-term debt: Own issuances 25,838 26,266 23,695 26,266 Total short-term debt 25,838 26,266 23,695 26,266 Long-term debt: Covered bonds 38,037 35,434 33,160 30,268 Senior 109,340 103,159 99,819 95,754 Securitisation 8,190 7,588 — — Structured notes 52 149 — — Total long-term debt 155,619 146,330 132,979 126,022 Total debt issues 181,457 172,596 156,674 152,288 Movement Reconciliation ($m) Opening balance 172,596 168,356 152,288 144,116 Issuances 61,484 59,456 50,375 57,440 Maturities, repayments, buy backs and reductions (63,313) (64,698) (56,347) (58,005) Total cash movements (1,829) (5,242) (5,972) (565) Foreign exchange translation impact 6,713 11,022 6,514 10,252 Fair value adjustments 317 (244) 318 (240) Fair value hedge accounting adjustments 3,512 (1,313) 3,376 (1,288) Other (amortisation of bond issue costs, etc.) 148 17 150 13 Total non-cash movements 10,690 9,482 10,358 8,737 Closing balance 181,457 172,596 156,674 152,288 Consolidated $m Short-term debt Own issuances: US commercial paper 19,950 18,675 Senior debt: AUD 100 550 GBP 5,366 6,604 Other 422 437 Total own issuances 25,838 26,266 Total short-term debt 25,838 26,266 Long-term debt (by currency): AUD 43,532 37,571 CHF 3,480 2,953 EUR 37,464 31,734 GBP 5,545 5,290 JPY 2,538 3,226 NZD 3,197 2,294 USD 54,490 60,336 Other 5,373 2,926 Total long-term debt 155,619 146,330 Consolidated $m Short-term borrowings US commercial paper Maximum amount outstanding at any month end 26,879 28,331 27,456 Approximate average amount outstanding 22,502 23,315 23,025 Approximate weighted average interest rate on: Average amount outstanding 2.8 % 2.0 % 1.3 % Outstanding as at end of the year 3.2 % 2.5 % 1.2 % The Group manages foreign exchange exposure from debt issuances as part of its hedging activities. Further details of the Group’s hedge accounting are in Note 20.

Loan Capital

Loan Capital	12 Months Ended
	Sep. 30, 2019
Loan Capital
Loan Capital	Note 19. Loan capital Accounting policy Loan capital are instruments issued by the Group which qualify for inclusion as regulatory capital under Australian Prudential Regulation Authority (APRA) Prudential Standards. Loan capital is initially measured at fair value and subsequently measured at amortised cost using the effective interest rate method. Interest expense incurred is recognised in net interest income. Consolidated and Parent Entity $m Additional Tier 1 (AT1) loan capital Westpac capital notes 7,411 7,370 USD AT1 securities 1,913 1,585 Total AT1 loan capital 9,324 8,955 Tier 2 loan capital Subordinated notes 11,981 7,822 Subordinated perpetual notes 521 488 Total Tier 2 loan capital 12,502 8,310 Total loan capital 21,826 17,265 Movement Reconciliation ($m) Opening balance 17,265 17,666 Issuances 4,935 2,342 Maturities, repayments, buy backs and reductions (1,662) (2,387) Total cash movements 3,273 (45) Foreign exchange translation impact 521 449 Fair value hedge accounting adjustments 748 (257) Conversion of Convertible preference shares to ordinary shares — (566) Other (amortisation of bond issue costs, etc.) 19 18 Total non-cash movements 1,288 (356) Closing balance 21,826 17,265 Additional Tier 1 loan capital A summary of the key terms and common features of AT1 instruments are provided below 1 . Consolidated and Parent Entity Potential scheduled Optional $m Distribution interest rate conversion date 2 redemption date 3 Westpac capital notes (WCN) $1,384 million WCN (90 day bank bill rate + 3.20% p.a.) 8 March 2021 8 March 2019 4 — 1,382 x (1 - Australian corporate tax rate) $1,311 million WCN2 (90 day bank bill rate + 3.05% p.a.) 23 September 2024 23 September 2022 1,308 1,305 x (1 - Australian corporate tax rate) $1,324 million WCN3 (90 day bank bill rate + 4.00% p.a.) 22 March 2023 22 March 2021 1,319 1,316 x (1 - Australian corporate tax rate) $1,702 million WCN4 (90 day bank bill rate + 4.90% p.a.) 20 December 2023 20 December 2021 1,694 1,691 x (1 - Australian corporate tax rate) $1,690 million WCN5 (90 day bank bill rate + 3.20% p.a.) 22 September 2027 22 September 2025 1,677 1,676 x (1 - Australian corporate tax rate) $1,423 million WCN6 (90 day bank bill rate + 3.70% p.a.) 31 July 2026 31 July 2024 1,413 — x (1 - Australian corporate tax rate) Total Westpac capital notes 7,411 7,370 USD AT1 securities US$1,250 million securities 5.00% p.a. until but excluding 21 September 2027 n/a 21 September 2027 6 1,913 1,585 (first reset date). If not redeemed, converted or written-off earlier, from, and including, each reset date 5 to, but excluding, the next succeeding reset date, at a fixed rate p.a. equal to the prevailing 5- year USD mid-market swap rate plus 2.89% p.a. Total USD AT1 securities 1,913 1,585 1. A$ unless otherwise noted. 2. Conversion is subject to the satisfaction of the scheduled conversion conditions. If the conversion conditions are not satisfied on the relevant scheduled conversion date, conversion will not occur until the next distribution payment date on which the scheduled conversion conditions are satisfied. 3. Westpac may elect to redeem the relevant AT1 instrument, subject to APRA’s prior written approval. 4. On 18 December 2018, $722 million of WCN were transferred to the WCN nominated party for $100 each pursuant to the Westpac Capital Note 6 reinvestment offer. Those WCN were subsequently redeemed by Westpac. On 8 March 2019, the remaining $662 million of WCN were transferred to the WCN nominated party for $100 each. Following the transfer, those remaining WCN were redeemed by Westpac. 5. 21 September 2027 and every fifth anniversary thereafter is a reset date. 6. Westpac may elect to redeem on 21 September 2027 and every fifth anniversary thereafter. Common features of AT1 instruments Payment conditions Quarterly distributions on the Westpac capital notes and semi-annual interest payments on the USD AT1 securities are discretionary and will only be paid if the payment conditions are satisfied, including that the payment will not result in a breach of Westpac’s capital requirements under APRA’s prudential standards; not result in Westpac becoming, or being likely to become, insolvent; or if APRA does not object to the payment. Broadly, if for any reason a distribution or interest payment has not been paid in full on the relevant payment date, Westpac must not determine or pay any dividends on Westpac ordinary shares or undertake a discretionary buy back or capital reduction of Westpac ordinary shares, unless the unpaid amount is paid in full within 20 business days of the relevant payment date or in certain other circumstances. The AT1 instruments convert into Westpac ordinary shares in the following circumstances: ▪ Scheduled Conversion On the scheduled conversion date, provided certain conversion conditions are satisfied, it is expected that the relevant AT1 instrument 1 will be converted and holders will receive a variable number of Westpac ordinary shares calculated using the formula described in the terms of the relevant AT1 instrument, subject to a maximum conversion number. The conversion number of Westpac ordinary shares will be calculated using the face value of the relevant AT1 instrument and the Westpac ordinary share price determined over the 20 business day period prior to the scheduled conversion date, including a 1% discount. ▪ Capital Trigger Event or Non-Viability Trigger Event Westpac will be required to convert some or all AT1 instruments into a variable number of Westpac ordinary shares upon the occurrence of a capital trigger event or non-viability trigger event. No conversion conditions apply in these circumstances. A capital trigger event occurs when Westpac determines, or APRA notifies Westpac in writing that it believes, Westpac’s Common Equity Tier 1 Capital ratio is equal to or less than 5.125% (on a level 1 or level 2 basis 2 ). A non-viability trigger event will occur when APRA notifies Westpac in writing that it believes conversion of all or some AT1 instruments (or conversion, write-off or write-down of relevant capital instruments of the Westpac Group), or public sector injection of capital (or equivalent support), in each case is necessary because without it, Westpac would become non-viable. For each AT1 instrument converted, holders will receive a variable number of Westpac ordinary shares calculated using the formula described in the terms of the relevant AT1 instrument, subject to a maximum conversion number. The conversion number of Westpac ordinary shares is calculated using the face value or outstanding principal amount of the relevant AT1 instrument and the Westpac ordinary share price determined over the 5 business day period prior to the capital trigger event date or non-viability trigger event date and includes a 1% discount. For each AT1 instrument, the maximum conversion number is set using a Westpac ordinary share price which is broadly equivalent to 20% of the Westpac ordinary share price at the time of issue. Following the occurrence of a capital trigger event or non-viability trigger event, if conversion of an AT1 instrument does not occur within five business days, holders’ rights in relation to the relevant AT1 instrument will be immediately and irrevocably terminated. ▪ Early conversion Westpac is able to elect to convert 3 , or may be required to convert 3 , AT1 instruments early in certain circumstances. The terms of conversion and the conversion conditions are broadly similar to scheduled conversion, however the share price floor in the maximum conversion number will depend on the conversion event. Early redemption Westpac is able to elect to redeem the relevant AT1 instrument on the optional redemption date or for certain taxation or regulatory reasons, subject to APRA’s prior written approval. 1. Scheduled conversion does not apply to USD AT1 securities. 2. Level 1 comprises Westpac Banking Corporation and subsidiaries approved by APRA as being part of a single ‘Extended Licenced Entity’ for the purposes of measuring capital adequacy. Level 2 includes all subsidiaries except those entities specifically excluded by APRA regulations for the purposes of measuring capital adequacy. 3. Excludes USD AT1 securities. Tier 2 loan capital A summary of the key terms and common features of Westpac’s Tier 2 instruments are provided below 1 : Consolidated and Parent Entity Optional $m Interest rate 2 Maturity date redemption date 3 Subordinated notes A$1,000 million subordinated notes 90 day bank bill rate + 2.05% p.a. 14 March 2024 14 March 2019 4 — 999 CNY1,250 million subordinated notes 4.85% p.a. until but excluding 9 February 2020. Thereafter, if not redeemed, a fixed rate per annum equal to the one-year CNH HIBOR reference rate plus 0.8345% p.a. 9 February 2025 9 February 2020 260 252 A$350 million subordinated notes 4.50% p.a. until but excluding 11 March 2022. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year AUD semi-quarterly mid-swap reference rate plus 1.95% p.a., the sum of which will be annualised. 11 March 2027 11 March 2022 362 347 S$325 million subordinated notes 4.00% p.a. until but excluding 12 August 2022. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year SGD swap offer rate plus 1.54% p.a. 12 August 2027 12 August 2022 356 330 A$175 million subordinated notes 4.80% p.a. until but excluding 14 June 2023. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year AUD semi-quarterly mid-swap reference rate plus 2.65% p.a., each of which will be annualised. 14 June 2028 14 June 2023 182 171 US$100 million subordinated notes Fixed 5.00% p.a. 23 February 2046 n/a 161 114 A$700 million subordinated notes Floating 90 day bank bill rate + 3.10% p.a. 10 March 2026 10 March 2021 697 700 JPY20,000 million subordinated notes Fixed 1.16% p.a. 19 May 2026 n/a 279 242 JPY10,200 million subordinated notes Fixed 1.16% p.a. 2 June 2026 n/a 142 123 JPY10,000 million subordinated notes Fixed 0.76% p.a. 9 June 2026 n/a 139 120 NZ$400 million subordinated notes 4.6950% p.a. until but excluding 1 September 2021. Thereafter, if not redeemed, a fixed rate per annum equal to the New Zealand 5-year swap rate on 1 September 2021 plus 2.60% p.a. 1 September 2026 1 September 2021 373 358 JPY8,000 million subordinated notes 0.9225% p.a until but excluding 7 October 2021. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year JPY mid-swap rate plus 1.0005% p.a. 7 October 2026 7 October 2021 110 97 US$1,500 million subordinated notes 4.322% p.a. until but excluding 23 November 2026. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year USD mid-swap rate plus 2.236% p.a. 23 November 2031 23 November 2026 2,297 1,922 JPY12,000 million subordinated notes 0.87% p.a. until but excluding 6 July 2022. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year JPY mid-swap rate plus 0.78% p.a. 6 July 2027 6 July 2022 166 146 JPY13,500 million subordinated notes 0.868% p.a. until but excluding 6 July 2022. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year JPY mid-swap rate plus 0.778% p.a. 6 July 2027 6 July 2022 187 165 HKD600 million subordinated notes 3.15% p.a. until but excluding 14 July 2022. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year HKD mid-swap rate plus 1.34% p.a. 14 July 2027 14 July 2022 114 102 A$350 million subordinated notes 4.334% p.a. until but excluding 16 August 2024. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year AUD semi-quarterly mid-swap reference rate plus 1.83% p.a., each of which will be annualised. 16 August 2029 16 August 2024 349 347 A$185 million subordinated notes Fixed 5.00% p.a. 24 January 2048 n/a 185 185 A$250 million subordinated notes 90 day bank bill rate + 1.40% p.a. 16 February 2028 16 February 2023 250 250 A$130 million subordinated notes Fixed 5.00% p.a. 2 March 2048 n/a 130 130 A$725 million subordinated notes 90 day bank bill rate + 1.80% p.a. 22 June 2028 22 June 2023 724 722 US$1,000 million subordinated notes Fixed 4.421% p.a. 24 July 2039 n/a 1,606 — US$1,250 million subordinated notes 4.110% p.a. until but excluding 24 July 2029. Thereafter, if not redeemed a fixed rate per annum equal to the five-year USD treasury rate plus 2% p.a. 24 July 2034 24 July 2029 1,921 — A$1,000 million subordinated notes Floating 90 day bank bill rate + 1.98% p.a. 27 August 2029 27 August 2024 991 — Total subordinated notes 11,981 7,822 1. Excludes subordinated perpetual notes. 2. Interest payments are made periodically as set out in the terms of the subordinated notes. 3. Westpac may elect to redeem the relevant Tier 2 instrument on the optional redemption date or dates, subject to APRA's prior written approval. If not redeemed on the first optional redemption date, Westpac may elect to redeem the relevant Tier 2 instrument on any interest payment date after the first optional redemption date (except for US$1,500 million subordinated notes and US$1,250 million subordinated notes), subject to APRA's prior written approval. 4. The subordinated notes were redeemed in full on the optional redemption date. Common features of subordinated notes Interest payments are subject to Westpac being solvent at the time of, and immediately following, the interest payment. These subordinated notes contain non-viability loss absorption requirements. Non-viability trigger event Westpac will be required to convert some or all subordinated notes into a variable number of Westpac ordinary shares upon the occurrence of a non-viability trigger event. A non-viability trigger event will occur on similar terms as described under AT1 loan capital. For each subordinated note converted, holders will receive a variable number of Westpac ordinary shares calculated using the formula described in the terms of the relevant Tier 2 instrument, subject to a maximum conversion number. The conversion number of Westpac ordinary shares will be calculated in a manner similar to that described under AT1 loan capital for a non-viability trigger event. For each Tier 2 instrument, the maximum conversion number is set using a Westpac ordinary share price which is broadly equivalent to 20% of the Westpac ordinary share price at the time of issue. Following the occurrence of a non-viability trigger event, if conversion of a Tier 2 instrument does not occur within five business days, holders’ rights in relation to the relevant Tier 2 instrument will be immediately and irrevocably terminated. Subordinated perpetual notes These notes have no final maturity but Westpac can choose to redeem them at par on any interest payment date falling on or after September 1991, subject to APRA approval and certain other conditions. Interest is cumulative and payable on the notes semi-annually at a rate of 6 month US$ LIBOR plus 0.15% p.a., subject to Westpac being solvent immediately after making the payment and having paid any dividend on any class of share capital of Westpac within the prior 12 month period. These notes qualify for transitional treatment as Tier 2 capital of Westpac under APRA’s Basel III capital adequacy framework. The rights of the noteholders and coupon holders are subordinated to the claims of all creditors (including depositors) of Westpac other than creditors whose claims against Westpac rank equally with, or junior to, these notes.

Derivative financial instrument

Derivative financial instruments	12 Months Ended
	Sep. 30, 2019
Derivative financial instruments
Derivative financial instruments	Note 20. Derivative financial instruments Accounting policy Derivative financial instruments are instruments whose values are derived from the value of an underlying asset, reference rate or index and include forwards, futures, swaps and options. The Group uses derivative financial instruments for meeting customers’ needs, our asset and liability risk management activities (ALM), and undertaking market making and positioning activities. Trading derivatives Derivatives which are used in our ALM activities but are not designated into a hedge accounting relationship are considered economic hedges, and are adjusted for cash earnings purposes due to the accounting mismatch between the fair value of the derivatives and the accounting treatment of the underlying exposure (refer to Note 2 for further details). These derivatives, along with derivatives used for meeting customers’ needs and undertaking market making and positioning activities, are measured at FVIS and are disclosed as trading derivatives. Hedging derivatives Hedging derivatives are those which are used in our ALM activities and have also been designated into one of three hedge accounting relationships: fair value hedge; cash flow hedge; or hedge of a net investment in a foreign operation. These derivatives are measured at fair value. These hedge designations and the associated accounting treatment are detailed below. For more details regarding the Group’s asset and liability risk management activities, refer to Note 21. Fair value hedges Fair value hedges are used to hedge the exposure to changes in the fair value of an asset or liability. Changes in the fair value of derivatives and the hedged asset or liability in fair value hedges are recognised in interest income. The carrying value of the hedged asset or liability is adjusted for the changes in fair value related to the hedged risk. If a hedge is discontinued, any fair value adjustments to the carrying value of the asset or liability are amortised to net interest income over the period to maturity. If the asset or liability is sold, any unamortised adjustment is immediately recognised in net interest income. Cash flow hedges Cash flow hedges are used to hedge the exposure to variability of cash flows attributable to an asset, liability or future forecast transaction. For effective hedges, changes in the fair value of derivatives are recognised in the cash flow hedge reserve through other comprehensive income and subsequently recognised in interest income when the cash flows attributable to the asset or liability that was hedged impact the income statement. For hedges with some ineffectiveness, the changes in the fair value of the derivatives relating to the ineffective portion are immediately recognised in interest income. If a hedge is discontinued, any cumulative gain or loss remains in other comprehensive income. It is amortised to net interest income over the period which the asset or liability that was hedged also impacts the income statement. If a hedge of a forecast transaction is no longer expected to occur, any cumulative gain or loss in other comprehensive income is immediately recognised in net interest income. Net investment hedges Net investment hedges are used to hedge foreign exchange risks arising from a net investment of a foreign operation. For effective hedges, changes in the fair value of derivatives are recognised in the foreign currency translation reserve through other comprehensive income. For hedges with some ineffectiveness, the changes in the fair value of the derivatives relating to the ineffective portion are immediately recognised in non-interest income. If a foreign operation is disposed of, any cumulative gain or loss in other comprehensive income is immediately recognised in non-interest income. Total derivatives The carrying values of derivative instruments are set out in the tables below: Consolidated 2019 Total derivatives Trading Hedging carrying value $m Assets Liabilities Assets Liabilities Assets Liabilities Interest rate contracts 1 Forward rate agreements 35 (36) — — 35 (36) Swap agreements 38,383 (37,051) 4,073 (7,568) 42,456 (44,619) Options 294 (303) — — 294 (303) Total interest rate contracts 38,712 (37,390) 4,073 (7,568) 42,785 (44,958) Foreign exchange contracts Spot and forward contracts 6,857 (6,393) 181 (3) 7,038 (6,396) Cross currency swap agreements (principal and interest) 8,934 (12,478) 2,172 (69) 11,106 (12,547) Options 200 (111) — - 200 (111) Total foreign exchange contracts 15,991 (18,982) 2,353 (72) 18,344 (19,054) Credit default swaps Credit protection purchased — (88) — — — (88) Credit protection sold 83 - — — 83 — Total credit default swaps 83 (88) — — 83 (88) Commodity contracts 251 (187) — — 251 (187) Equities 1 (1) — — 1 (1) Total of gross derivatives 55,038 (56,648) 6,426 (7,640) 61,464 (64,288) Impact of netting arrangements (27,968) 28,703 (3,637) 6,489 (31,605) 35,192 Total of net derivatives 27,070 (27,945) 2,789 (1,151) 29,859 (29,096) Consolidated 2018 Total derivatives Trading Hedging carrying value $m Assets Liabilities Assets Liabilities Assets Liabilities Interest rate contracts 1 Forward rate agreements 11 (12) — — 11 (12) Swap agreements 15,626 (15,580) 890 (5,301) 16,516 (20,881) Options 165 (167) — — 165 (167) Total interest rate contracts 15,802 (15,759) 890 (5,301) 16,692 (21,060) Foreign exchange contracts Spot and forward contracts 6,741 (6,418) — (32) 6,741 (6,450) Cross currency swap agreements (principal and interest) 6,561 (9,019) 2,365 (182) 8,926 (9,201) Options 120 (184) — — 120 (184) Total foreign exchange contracts 13,422 (15,621) 2,365 (214) 15,787 (15,835) Credit default swaps Credit protection purchased 3 (101) — — 3 (101) Credit protection sold 99 - — — 99 — Total credit default swaps 102 (101) — — 102 (101) Commodity contracts 246 (300) — — 246 (300) Equities 1 — — — 1 — Total of gross derivatives 29,573 (31,781) 3,255 (5,515) 32,828 (37,296) Impact of netting arrangements (8,222) 8,912 (505) 3,977 (8,727) 12,889 Total of net derivatives 21,351 (22,869) 2,750 (1,538) 24,101 (24,407) 1. The fair value of futures contracts are settled daily with the exchange, and therefore have been excluded from this table. Parent Entity 2019 Total derivatives Trading Hedging carrying value $m Assets Liabilities Assets Liabilities Assets Liabilities Interest rate contracts 1 Forward rate agreements 35 (36) — — 35 (36) Swap agreements 38,489 (37,438) 3,955 (7,018) 42,444 (44,456) Options 294 (303) — — 294 (303) Total interest rate contracts 38,818 (37,777) 3,955 (7,018) 42,773 (44,795) Foreign exchange contracts Spot and forward contracts 6,987 (6,389) 46 (3) 7,033 (6,392) Cross currency swap agreements (principal and interest) 8,934 (12,479) 1,613 (6) 10,547 (12,485) Options 200 (111) — — 200 (111) Total foreign exchange contracts 16,121 (18,979) 1,659 (9) 17,780 (18,988) Credit default swaps Credit protection purchased — (88) — — — (88) Credit protection sold 83 — — — 83 - Total credit default swaps 83 (88) — — 83 (88) Commodity contracts 251 (187) — — 251 (187) Equities 1 (1) — — 1 (1) Total of gross derivatives 55,274 (57,032) 5,614 (7,027) 60,888 (64,059) Impact of netting arrangements (27,968) 28,703 (3,637) 6,489 (31,605) 35,192 Total of net derivatives 27,306 (28,329) 1,977 (538) 29,283 (28,867) Parent Entity 2018 Total derivatives Trading Hedging carrying value $m Assets Liabilities Assets Liabilities Assets Liabilities Interest rate contracts 1 Forward rate agreements 11 (12) — — 11 (12) Swap agreements 15,659 (15,751) 841 (5,012) 16,500 (20,763) Options 165 (167) — — 165 (167) Total interest rate contracts 15,835 (15,930) 841 (5,012) 16,676 (20,942) Foreign exchange contracts Spot and forward contracts 6,737 (6,417) — (31) 6,737 (6,448) Cross currency swap agreements (principal and interest) 6,562 (9,019) 1,845 (124) 8,407 (9,143) Options 120 (184) — — 120 (184) Total foreign exchange contracts 13,419 (15,620) 1,845 (155) 15,264 (15,775) Credit default swaps Credit protection purchased 3 (101) — — 3 (101) Credit protection sold 99 — — — 99 — Total credit default swaps 102 (101) — — 102 (101) Commodity contracts 246 (300) — — 246 (300) Equities 1 — — — 1 — Total of gross derivatives 29,603 (31,951) 2,686 (5,167) 32,289 (37,118) Impact of netting arrangements (8,222) 8,912 (505) 3,977 (8,727) 12,889 Total of net derivatives 21,381 (23,039) 2,181 (1,190) 23,562 (24,229) 1. The fair value of futures contracts are settled daily with the exchange, and therefore have been excluded from this table. Hedge accounting The Group designates derivatives into hedge accounting relationships in order to manage the volatility in earnings and capital that would otherwise arise from interest rate risk and foreign exchange risk that may result from differences in the accounting treatment of derivatives and underlying exposures. These hedge accounting relationships and the risks they are used to hedge are described below. The Group enters into one-to-one hedge relationships to manage specific exposures where the terms of the hedged item significantly match the terms of the hedging instrument. The Group also uses dynamic hedge accounting where the hedged items are part of a portfolio of assets and/or liabilities that frequently change. In this hedging strategy, the exposure being hedged and the hedging instruments may change frequently rather than there being a one-to-one hedge accounting relationship for a specific exposure. Fair value hedges Interest rate risk The Group hedges its interest rate risk to reduce exposure to changes in fair value due to interest rate fluctuations over the hedging period. Interest rate risk arising from fixed rate debt issuances and fixed rate bonds classified as investment securities at FVOCI is hedged with single currency fixed to floating interest rate derivatives. The Group also hedges its benchmark interest rate risk from fixed rate foreign currency denominated debt issuances using cross currency swaps. In applying fair value hedge accounting the Group primarily uses one-to-one hedge accounting to manage specific exposures. The Group also uses a dynamic hedge accounting strategy for fair value portfolio hedge accounting of some fixed rate mortgages, primarily in New Zealand to reduce exposure to changes in fair value due to interest rate fluctuations over the hedging period. These fixed rate mortgages are allocated to time buckets based on their expected repricing dates and the fixed-to-floating interest rate derivatives are designated accordingly to the capacity in the relevant time buckets. The Group hedges the benchmark interest rate which generally represents the most significant component of the changes in fair value. The benchmark interest rate is a component of interest rate risk that is observable in the relevant financial markets, for example, BBSW for AUD interest rates, LIBOR for USD interest rates and BKBM for NZD interest rates. Ineffectiveness generally arises from timing differences on repricing between the hedged item and the derivative. For the portfolio hedge accounting ineffectiveness also arises from prepayment risk (i.e. the difference between actual and expected prepayment of loans). In order to manage the ineffectiveness from early repayments and accommodate new originations the portfolio hedges are de-designated and redesignated periodically. Cash flow hedges Interest rate risk The Group’s exposure to the volatility of interest cash flows from customer deposits and loans is hedged with interest rate derivatives using a dynamic hedge accounting strategy called macro cash flow hedges. Customer deposits and loans are allocated to time buckets based on their expected repricing dates. The interest rate derivatives are designated accordingly to the gross asset or gross liability positions for the relevant time buckets. The Group hedges the benchmark interest rate which generally represents the most significant component of the changes in fair value. The benchmark interest rate is a component of interest rate risk that is observable in the relevant financial markets, for example, BBSW for AUD interest rates, LIBOR for USD interest rates and BKBM for NZD interest rates. Ineffectiveness arises from timing differences on repricing between the hedged item and the interest rate derivative. Ineffectiveness also arises if the notional values of the interest rate derivatives exceed the capacity for the relevant time buckets. The hedge accounting relationship is reviewed on a monthly basis and the hedging relationships are de-designated and redesignated if necessary. Foreign exchange risk The Group’s exposure to foreign currency principal and credit margin cash flows from fixed rate foreign currency debt issuances is hedged through the use of cross currency derivatives in a one-to-one hedging relationship to manage the changes between the foreign currency and AUD. In addition, for floating rate foreign currency debt issuances, the Group hedges from foreign floating to primarily AUD or NZD floating interest rates. These exposures represent the most significant components of fair value. Ineffectiveness may arise from basis risk or timing differences on repricing between the hedged item and the cross currency derivative. Net investment hedges Foreign exchange risk Structural foreign exchange risk results from Westpac’s capital deployed in offshore branches and subsidiaries, where it is denominated in currencies other than Australian dollars. As exchange rates move, the Australian dollar equivalent of offshore capital is subject to change that could introduce significant variability to the Bank’s reported financial results and capital ratios. The Group uses foreign exchange forward contracts when hedging the currency translation risk arising from net investments in foreign operations. The Group currently applies hedge accounting to its net investment in New Zealand operations which is the most material offshore operation and therefore the hedged risk is the movement of the NZD against the AUD. Ineffectiveness only arises if the notional values of the foreign exchange forward contracts exceed the net investment in New Zealand operations. Economic hedges As part of the Group’s ALM activities, economic hedges are entered into to hedge New Zealand future earnings and long term funding transactions. These hedges do not qualify for hedge accounting and the impact on profit and loss of these hedges is treated as a cash earnings adjustment. This is due to the accounting mismatch between the fair value accounting of the derivatives used in the economic hedges when compared to the recognition of the New Zealand future earnings as they are earned and the amortised cost accounting of the borrowing respectively. Refer to Note 2 for further details. Hedging instruments The following tables show the carrying value of hedging instruments and a maturity analysis of the notional amounts of the hedging instruments in one-to-one hedge relationships categorised by the types of hedge relationships and the hedged risk. Consolidated 2019 Notional amounts Over Within 1 year to Over Carrying value $m Hedging instrument Hedged risk 1 year 5 years 5 years Total Assets Liabilities One-to-one hedge relationships Fair value hedges Interest rate swap Interest rate risk 16,322 61,707 48,271 126,300 2,548 (5,672) Cross currency swap Interest rate risk 5,632 12,870 1,708 20,210 584 (69) Cash flow hedges Cross currency swap Foreign exchange risk 5,632 15,386 1,708 22,726 1,588 — Net investment hedges Forward contracts Foreign exchange risk 8,152 — — 8,152 181 (3) Total one-to-one hedge relationships 35,738 89,963 51,687 177,388 4,901 (5,744) Macro hedge relationships Portfolio fair value hedges Interest rate swap Interest rate risk n/a n/a n/a 18,813 — (194) Macro cash flow hedges Interest rate swap Interest rate risk n/a n/a n/a 176,828 1,525 (1,702) Total macro hedge relationships n/a n/a n/a 195,641 1,525 (1,896) Total of gross hedging derivatives n/a n/a n/a 373,029 6,426 (7,640) Impact of netting arrangements n/a n/a n/a n/a (3,637) 6,489 Total of net hedging derivatives n/a n/a n/a n/a 2,789 (1,151) Parent 2019 Notional amounts Over 1 Within year to Over Carrying value $m Hedging instrument Hedged risk 1 year 5 years 5 years Total Assets Liabilities One-to-one hedge relationships Fair value hedges Interest rate swap Interest rate risk 14,323 59,842 47,881 122,046 2,535 (5,475) Cross currency swap Interest rate risk 4,473 7,185 1,384 13,042 441 — Cash flow hedges Cross currency swap Foreign exchange risk 4,473 7,185 1,384 13,042 1,172 (6) Net investment hedges Forward contracts Foreign exchange risk 2,315 — — 2,315 46 (3) Total one-to-one hedge relationships 25,584 74,212 50,649 150,445 4,194 (5,484) Macro hedge relationships Portfolio fair value hedges Interest rate swap Interest rate risk n/a n/a n/a — — — Macro cash flow hedges Interest rate swap Interest rate risk n/a n/a n/a 166,978 1,420 (1,543) Total macro hedge relationships n/a n/a n/a 166,978 1,420 (1,543) Total of gross hedging derivatives n/a n/a n/a 317,423 5,614 (7,027) Impact of netting arrangements n/a n/a n/a n/a (3,637) 6,489 Total of net hedging derivatives n/a n/a n/a n/a 1,977 (538) The following tables show the weighted average exchange rate related to significant hedging instruments in one-to- one hedge relationships. Consolidated 2019 Currency / Weighted $m Hedging instrument Hedged risk Currency pair average rate Cash flow hedges Cross currency swap Foreign exchange risk EUR:AUD 0.6929 EUR:NZD 0.6079 HKD:NZD 4.9670 Net investment hedges Forward contracts Foreign exchange risk NZD:AUD 1.0545 Parent Entity 2019 Currency / Weighted $m Hedging instrument Hedged risk Currency pair average rate Cash flow hedges Cross currency swap Foreign exchange risk EUR:AUD 0.6929 JPY:AUD 81.4507 CNH:AUD 4.9328 Net investment hedges Forward contracts Foreign exchange risk NZD:AUD 1.0546 Impact of hedge accounting on the balance sheet and reserves The following tables show the carrying amount of hedged items in a fair value hedge relationship and the component of the carrying amount related to accumulated hedge accounting adjustments. Consolidated 2019 Accumulated fair value hedge adjustment Carrying amount of included in carrying $m hedged item amount Interest rate risk Investment securities 53,273 2,815 Loans 19,235 133 Debt issues and loan capital (100,909) (2,818) Parent Entity 2019 Accumulated fair value hedge adjustment Carrying amount of included in carrying $m hedged item amount Interest rate risk Investment securities 49,132 2,704 Loans 421 5 Debt issues and loan capital (93,296) (2,661) There were no accumulated fair value hedge adjustments included in the above carrying amounts relating to hedged items that have ceased to be adjusted for hedging gains and losses. The pre-tax impact of cash flow and net investment hedges on reserves is detailed below: Consolidated 2019 $m Interest rate risk Foreign exchange risk Total Cash flow hedge reserve Balance at beginning of the year (87) (89) (176) Net gains/(losses) from changes in fair value (158) (45) (203) Transferred to interest income 146 51 197 Balance at end of year (99) (83) (182) Parent Entity 2019 $m Interest rate risk Foreign exchange risk Total Cash flow hedge reserve Balance at beginning of the year (42) (57) (99) Net gains/(losses) from changes in fair value (130) 9 (121) Transferred to interest income 102 26 128 Balance at end of year (70) (22) (92) There were no balances remaining in the cash flow hedge reserve relating to hedge relationships for which hedge accounting is no longer applied. As disclosed in Note 28, the net losses from changes in the fair value of net investment hedges were $129 million for the Group and $52 million for the Parent Entity. Included in the foreign currency translation reserve is a loss of $210 million for the Group and $214 million for the Parent Entity relating to discontinued hedges of our net investment in USD operations. This would only be transferred to the income statement on disposal of the related USD operations. Hedge effectiveness Hedge effectiveness is tested prospectively at inception and during the lifetime of hedge relationships. For-one- to one hedge relationships this testing uses a qualitative assessment of matched terms where the critical terms of the derivatives used as the hedging instrument match the terms of the hedged item. In addition, a quantitative effectiveness test is performed for all hedges which could include regression analysis, dollar offset and/or sensitivity analysis. Retrospective testing is also performed to determine whether the hedge relationship remains highly effective so that hedge accounting can continue to be applied and also to determine any ineffectiveness. These tests are performed using regression analysis and the dollar offset method. The following tables provide information regarding the determination of hedge effectiveness: Change in fair value Change in of hedging value of the Hedge instrument hedged item Hedge ineffectiveness used for used for ineffectiveness recognised in Consolidated 2019 calculating calculating recognised in non-interest $m Hedging instrument Hedged risk ineffectiveness ineffectiveness interest income income Fair value hedges Interest rate swap Interest rate risk 1,532 (1,512) 20 n/a Cross currency swap Interest rate risk 192 (190) 2 n/a Cash flow hedges Interest rate swap Interest rate risk (6) 12 6 n/a Cross currency swap Foreign exchange risk 6 (6) — n/a Net investment hedges Forward contracts Foreign exchange risk (129) 129 n/a — Total 1,595 (1,567) 28 — Change in fair value Change in of hedging value of the Hedge instrument hedged item Hedge ineffectiveness used for used for ineffectiveness recognised in Parent Entity 2019 calculating calculating recognised in non-interest $m Hedging instrument Hedged risk ineffectiveness ineffectiveness interest income income Fair value hedges Interest rate swap Interest rate risk 1,684 (1,664) 20 n/a Cross currency swap Interest rate risk 56 (57) (1) n/a Cash flow hedges Interest rate swap Interest rate risk (21) 28 7 n/a Cross currency swap Foreign exchange risk 35 (35) — n/a Net investment hedges Forward contracts Foreign exchange risk (52) 52 n/a — Total 1,702 (1,676) 26 — Comparative year information under prior AASB 7 disclosure requirements Ineffectiveness of hedge relationships Fair value hedges 2018 $m Consolidated Parent Entity Change in fair value hedging instruments (1,203) (1,208) Change in fair value hedge items attributed to hedged risk 1,192 1,197 Ineffectiveness in interest income (11) (11) Cash flow hedges 2018 $m Consolidated Parent Entity Cash flow hedge ineffectiveness (7) (11) Net investment hedges For both the Group and Parent Entity, there was no ineffectiveness for net investment hedges recognised in 2018. Hedging instruments Gross cash inflows and outflows on derivatives designated in cash flow hedges are, as a proportion of total gross cash flows, expected to occur in the following periods: Less than 1 month to 3 months 1 year to 2 years to 3 years to 4 years to over 2018 1 month 3 months to 1 year 2 years 3 years 4 years 5 years 5 years Cash inflows 0.3 % 2.1 % 21.8 % 23.8 % 18.9 % 19.1 % 4.7 % 9.3 % Cash outflows 0.5 % 1.8 % 22.4 % 23.0 % 19.5 % 18.0 % 4.9 % 9.9 %

Financial risk

Financial risk	12 Months Ended
	Sep. 30, 2019
Financial risk
Financial risk	Note 21. Financial risk Financial instruments are fundamental to the Group’s business of providing banking and financial services. The associated financial risks (including credit risk, funding and liquidity risk and market risk) are a significant proportion of the total risks faced by the Group. This note details the financial risk management policies, practices and quantitative information of the Group’s principal financial risk exposures. Note Principal financial risks Note name number Overview Risk management frameworks Credit risk Credit risk ratings system 21.2.1 The risk of financial loss where a customer or counterparty fails to meet their financial obligations. Credit risk mitigation, collateral and other credit enhancements 21.2.2 Credit risk concentrations 21.2.3 Credit quality of financial assets 21.2.4 Non-performing loans and credit commitments 21.2.5 Collateral held 21.2.6 Funding and liquidity risk Liquidity modelling 21.3.1 The risk that Westpac cannot meet its payment obligations or that it does not have the appropriate amount, tenor and composition of funding and liquidity to support its assets. Sources of funding 21.3.2 Assets pledged as collateral 21.3.3 Contractual maturity of financial liabilities 21.3.4 Expected maturity 21.3.5 Market risk Value-at-Risk (VaR) 21.4.1 The risk of an adverse impact on earnings resulting from changes in market factors, such as foreign exchange rates, interest rates, commodity prices Traded market risk 21.4.2 and equity price. Non-traded market risk 21.4.3 21.1 Risk management frameworks The Board is responsible for approving the Westpac Group Risk Management Framework, Westpac Group Risk Management Strategy and Westpac Group Risk Appetite Statement and for monitoring the effectiveness of risk management by the Westpac Group. The Board has delegated to the Board Risk and Compliance Committee (BRCC) responsibility to: ▪ review and recommend the Westpac Group Risk Management Framework, Westpac Group Risk Management Strategy and Westpac Group Risk Appetite Statement to the Board for approval; ▪ review and monitor the risk profile and controls of the Group consistent with Westpac Group's Risk Appetite Statement; ▪ approve frameworks, policies and processes for managing risk (consistent with the Westpac Group Risk Management Strategy and Westpac Group Risk Appetite Statement); and ▪ review and, where appropriate, approve risks beyond the approval discretion provided to management. For each of its primary financial risks, the Group maintains risk management frameworks and a number of supporting policies that define roles and responsibilities, acceptable practices, limits and key controls: Risk Risk management framework and controls Credit risk ▪ The Credit Risk Management Framework describes the principles, methodologies, systems, roles and responsibilities, reports and key controls for managing credit risk. ▪ The BRCC, Westpac Group Executive Risk Committee (RISKCO) and Westpac Group Credit Risk Committee (CREDCO) monitor the risk profile, performance and management of the Group’s credit portfolio and the development and review of key credit risk policies. ▪ The Credit Risk Rating System Policy describes the credit risk rating system philosophy, design, key features and uses of rating outcomes. ▪ All models materially impacting the risk rating process are periodically reviewed in accordance with Westpac’s model risk policies. ▪ An annual review is performed of the Credit Risk Rating System by the BRCC and CREDCO. ▪ Specific credit risk estimates (including probability of default (PD), loss given default (LGD) and exposure at default (EAD) levels) are overseen, reviewed annually and supported by the Credit Risk Estimates Committee (a subcommittee of CREDCO) prior to approval under delegated authority from the Chief Risk Officer. ▪ In determining the provision for expected credit losses, the macroeconomic variables and the probability weightings of the forward looking scenarios as well as any adjustments made to the modelled outcomes are subject to the approval of the Group Chief Financial Officer and the Chief Risk Officer with oversight from the Board of Directors (and its Committees). ▪ Policies for the delegation of credit approval authorities and formal limits for the extension of credit are established throughout the Group. ▪ Credit manuals are established throughout the Group including policies governing the origination, evaluation, approval, documentation, settlement and ongoing management of credit risks. ▪ Sector policies guide credit extension where industry-specific guidelines are considered necessary (e.g. acceptable financial ratios or permitted collateral). ▪ The Related Entity Risk Management Framework and supporting policies govern credit exposures to related entities, to minimise the spread of credit risk between Group entities and to comply with prudential requirements prescribed by APRA. Funding and liquidity risk ▪ Funding and liquidity risk is measured and managed in accordance with the policies and processes defined in the Board-approved Liquidity Risk Management Framework which is part of the Westpac Board-approved Risk Management Strategy. ▪ Responsibility for managing Westpac's liquidity and funding positions in accordance with Westpac's Liquidity Risk Management Framework is delegated to Treasury, under the oversight of Group ALCO and Group Liquidity Risk. ▪ Westpac’s Liquidity Risk Management Framework sets out Westpac’s funding and liquidity risk appetite, roles and responsibilities of key people managing funding and liquidity risk within Westpac, risk reporting and control processes and limits and targets used to manage Westpac’s balance sheet. ▪ Treasury undertakes an annual funding review that outlines Westpac's balance sheet funding strategy over a three year period. This review encompasses trends in global markets, peer analysis, wholesale funding capacity, expected funding requirements and a funding risk analysis. This strategy is continuously reviewed to take account of changing market conditions, investor sentiment and estimations of asset and liability growth rates. ▪ Westpac monitors the composition and stability of its funding so that it remains within Westpac’s funding risk appetite. This includes compliance with both the Liquidity Coverage Ratio (LCR) and Net Stable Funding Ratio (NSFR). ▪ Westpac holds a portfolio of liquid assets for several purposes, including as a buffer against unforeseen funding requirements. The level of liquid assets held takes into account the liquidity requirements of Westpac's balance sheet under normal and stress conditions. ▪ Treasury also maintains a contingent funding plan that outlines the steps that should be taken by Westpac in the event of an emerging ‘funding crisis’. The plan is aligned with Westpac’s broader Liquidity Crisis Management Policy which is approved annually by the Board. ▪ Daily liquidity risk reports are reviewed by Treasury and the Group’s Liquidity Risk teams. Liquidity reports are presented to ALCO monthly and to the BRCC quarterly. Market risk ▪ The Market Risk Framework describes the Group’s approach to managing traded and non-traded market risk. ▪ Traded market risk includes interest rate, foreign exchange, commodity, equity price, credit spread and volatility risks. Non-traded market risk includes interest rate and credit spread risks. ▪ Market risk is managed using VaR limits, Net interest income at risk (NaR) and structural risk limits (including credit spread and interest rate basis point value limits) as well as scenario analysis and stress testing. ▪ The BRCC approves the risk appetite for traded and non-traded risks through the use of VaR, NaR and specific structural risk limits. ▪ Westpac Group Market Risk Committee (MARCO) has approved separate VaR sub-limits for the trading activities of Financial Markets and Treasury and for Asset and Liability Management (ALM) activities. ▪ Market risk limits are assigned to business management based upon the Bank’s risk appetite and business strategies in addition to the consideration of market liquidity and concentration. ▪ Market risk positions are managed by the trading desks and ALM unit consistent with their delegated authorities and the nature and scale of the market risks involved. ▪ Daily monitoring of current exposure and limit utilisation is conducted independently by the Market Risk unit, which monitors market risk exposures against VaR and structural risk limits. Daily VaR position reports are produced by risk type, by product lines and by geographic region. Quarterly reports are produced for the MARCO, RISKCO and the BRCC. ▪ Daily stress testing and backtesting of VaR results are performed to support model integrity and to analyse extreme or unexpected movements. A review of both the potential profit and loss outcomes is also undertaken to monitor any skew created by the historical data. MARCO has ratified an approved escalation framework. ▪ The BRCC has approved a framework for profit or loss escalation which considers both single day and 20 day cumulative results. ▪ Treasury’s ALM unit is responsible for managing the non-traded interest rate risk including risk mitigation through hedging using derivatives. This is overseen by the Market Risk unit and reviewed by MARCO, RISKCO and BRCC. 21.2 Credit Risk 21.2.1 Credit risk ratings system The principal objective of the credit risk rating system is to reliably assess the credit risk to which the Group is exposed. The Group has two main approaches to this assessment. Transaction-managed customers Transaction managed customers are generally customers with business lending exposures. They are individually assigned a Customer Risk Grade (CRG), corresponding to their expected PD. Each facility is assigned an LGD. The Group’s risk rating system has a tiered scale of risk grades for both non-defaulted customers and defaulted customers. Non-defaulted CRGs are mapped to Moody’s and S&P Global Ratings (S&P) external senior ranking unsecured ratings. The table below shows Westpac’s high level CRGs for transaction-managed portfolios mapped to the Group’s credit quality disclosure categories and to their corresponding external rating. Transaction-managed Financial statement disclosure Westpac CRG Moody’s Rating S&P Rating Strong A Aaa – Aa3 AAA – AA– B A1 – A3 A+ – A– C Baa1 – Baa3 BBB+ – BBB– Good/satisfactory D Ba1 – B1 BB+ – B+ Westpac Rating Weak E Watchlist F Special Mention Weak/default/non-performing G Substandard/Default H Default Program-managed portfolio The program-managed portfolio generally includes retail products including mortgages, personal lending (including credit cards) as well as SME lending. These customers are grouped into pools of similar risk. Pools are created by analysing similar risk characteristics that have historically predicted that an account is likely to go into default. Customers grouped according to these predictive characteristics are assigned a PD and LGD relative to their pool. The credit quality of these pools is based on a combination of behavioural factors, delinquency trends, PD estimates and loan to valuation ratio (housing loans only). 21.2.2 Credit risk mitigation, collateral and other credit enhancements Westpac uses a variety of techniques to reduce the credit risk arising from its lending activities. This includes the Group establishing that it has direct, irrevocable and unconditional recourse to collateral and other credit enhancements through obtaining legally enforceable documentation. Collateral The table below describes the nature of collateral or security held for each relevant class of financial asset: Loans – housing and personal 1 Housing loans are secured by a mortgage over property and additional security may take the form of guarantees and deposits. Personal lending (including credit cards and overdrafts) is predominantly unsecured. Where security is taken, it is restricted to eligible motor vehicles, caravans, campers, motor homes and boats. Personal lending also includes margin lending which is secured primarily by shares or managed funds. Loans – business 1 Business loans may be secured, partially secured or unsecured. Security is typically taken by way of a mortgage over property and/or a general security agreement over business assets or other assets. Other security such as guarantees, standby letters of credit or derivative protection may also be taken as collateral, if appropriate. Trading securities, financial assets measured at FVIS and derivatives These exposures are carried at fair value which reflects the credit risk. For trading securities, no collateral is sought directly from the issuer or counterparty; however this may be implicit in the terms of the instrument (such as an asset-backed security). The terms of debt securities may include collateralisation. For derivatives, master netting agreements are typically used to enable the effects of derivative assets and liabilities with the same counterparty to be offset when measuring these exposures. Additionally, collateralisation agreements are also typically entered into with major institutional counterparties to avoid the potential build-up of excessive mark-to-market positions. Derivative transactions are increasingly being cleared through central clearers. 1. This includes collateral held in relation to associated credit commitments. Management of risk mitigation The Group mitigates credit risk through controls covering: Collateral and valuation management The estimated realisable value of collateral held in support of loans is based on a combination of: ▪ formal valuations currently held for such collateral; and ▪ management’s assessment of the estimated realisable value of all collateral held. This analysis also takes into consideration any other relevant knowledge available to management at the time. Updated valuations are obtained when appropriate. The Group revalues collateral related to financial markets positions on a daily basis and has formal processes in place to promptly call for collateral top-ups, if required. These processes include margining for non-centrally cleared customer derivatives as regulated by Australian Prudential Standard CPS226. The collateralisation arrangements are documented via the Credit Support Annex of the International Swaps and Derivatives Association (ISDA) dealing agreements and Global Master Repurchase Agreements (GMRA) for repurchase transactions. In relation to financial markets positions, Westpac only recognises collateral which is: ▪ cash, primarily in Australian dollars (AUD), New Zealand dollars (NZD), US dollars (USD), Canadian dollars (CAD), British pounds (GBP) or European Union euro (EUR); ▪ bonds issued by Australian Commonwealth, State and Territory governments or their Public Sector Enterprises, provided these attract a zero risk-weighting under Australian Prudential Standard (APS) 112; ▪ securities issued by other sovereign governments and supranationals as approved by an authorised credit officer; ▪ protection bought via credit-linked notes (provided the proceeds are invested in cash or other eligible collateral). Other credit enhancements The Group only recognises guarantees, standby letters of credit, or credit derivative protection from the following entities (provided they are not related to the entity with which Westpac has a credit exposure): ▪ Sovereign; ▪ Australia and New Zealand public sector; ▪ ADIs and overseas banks with a minimum risk grade equivalent of A3 / A–; and ▪ Others with a minimum risk grade equivalent of A3 / A–. Credit Portfolio Management (CPM) manages the Group’s corporate, sovereign and bank credit portfolios through monitoring the exposure and any offsetting hedge positions. CPM purchases credit protection from entities meeting the criteria above and sells credit protection to diversify the Group’s credit risk. Offsetting Creditworthy customers domiciled in Australia and New Zealand may enter into formal agreements with the Group, permitting the Group to set-off gross credit and debit balances in their nominated accounts. Cross-border set-offs are not permitted. Close-out netting is undertaken with counterparties with whom the Group has entered into a legally enforceable master netting agreement for their off-balance sheet financial market transactions in the event of default. Further details of offsetting are provided in Note 23. Central clearing The Group executes derivative transactions through central clearing counterparties. Central clearing counterparties mitigate risk through stringent membership requirements, the collection of margin against all trades placed, the default fund, and an explicitly defined order of priority of payments in the event of default. 21.2.3 Credit risk concentrations Credit risk is concentrated when a number of counterparties are engaged in similar activities, have similar economic characteristics and thus may be similarly affected by changes in economic or other conditions. The Group monitors its credit portfolio to manage risk concentrations and rebalance the portfolio. Individual customers or groups of related customers The Group has large exposure limits governing the aggregate size of credit exposure normally acceptable to individual customers and groups of related customers. These limits are tiered by customer risk grade. Specific industries Exposures to businesses, governments and other financial institutions are classified into a number of industry clusters based on related Australian and New Zealand Standard Industrial Classification (ANZSIC) codes and are monitored against the Group’s industry risk appetite limits. Individual countries The Group has limits governing risks related to individual countries, such as political situations, government policies and economic conditions that may adversely affect either a customer’s ability to meet its obligations to the Group, or the Group’s ability to realise its assets in a particular country. Maximum exposure to credit risk The maximum exposure to credit risk (excluding collateral received) is represented by the carrying amount of on-balance sheet financial assets (which comprises cash and balances with central banks, collateral paid, trading securities and financial assets measured at FVIS, derivatives, available-for-sale securities/investment securities, loans; and other financial assets) and undrawn credit commitments. The following tables set out the credit risk concentrations to which the Group and the Parent Entity are exposed for on-balance sheet financial assets and for undrawn credit commitments. Life insurance assets are excluded as primarily the credit risk is passed on to the policyholder and backed by the policyholder liabilities. The balances for trading securities and financial assets measured at FVIS and available-for-sale securities/investment securities exclude equity securities as the primary financial risk is not credit risk. The credit concentrations for each significant class of financial asset are: 1 Trading securities and financial assets measured at FVIS (Note 10) ▪ 45% (2018: 41%) were issued by financial institutions for the Group; 44% (2018: 40%) for the Parent Entity. ▪ 51% (2018: 55%) were issued by government or semi-government authorities for the Group; 52% (2018: 56%) for the Parent Entity. ▪ 71% (2018: 73%) were held in Australia by the Group; 75% (2018: 76%) by the Parent Entity. Available-for-sale securities / Investment securities (Note 11) ▪ 24% (2018: 27%) were issued by financial institutions for the Group; 25% (2018: 28%) for the Parent Entity. ▪ 75% (2018: 73%) were issued by government or semi-government authorities for the Group; 75% (2018: 72%) for the Parent Entity. ▪ 90% (2018: 89%) were held in Australia by the Group; 97% (2018: 96%) by the Parent Entity. Loans (Note 12) ▪ Note 12 provides a detailed breakdown of loans by industry and geographic classification. Derivative financial instruments (Note 20) ▪ 72% (2018: 79%) were issued by financial institutions for both the Group and Parent Entity. ▪ 78% (2018: 84%) were held in Australia by the Group; 80% (2017: 86%) by the Parent Entity. 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentation changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2019 2018 1 Total on Undrawn Total on Undrawn Consolidated balance credit balance credit $m sheet commitments Total sheet commitments Total Australia Accommodation, cafes and restaurants 8,061 1,070 9,131 8,316 1,404 9,720 Agriculture, forestry and fishing 9,250 2,014 11,264 8,662 2,035 10,697 Construction 7,229 3,340 10,569 6,764 3,324 10,088 Finance and insurance 73,052 7,316 80,368 68,002 7,781 75,783 Government, administration and defence 63,582 1,766 65,348 50,757 728 51,485 Manufacturing 10,504 5,850 16,354 9,979 5,738 15,717 Mining 3,325 3,802 7,127 3,641 3,079 6,720 Property 45,467 10,119 55,586 45,871 12,309 58,180 Property services and business services 14,191 5,898 20,089 13,577 5,596 19,173 Services 12,340 6,523 18,863 12,312 5,700 18,012 Trade 16,593 7,677 24,270 16,866 7,951 24,817 Transport and storage 9,529 5,114 14,643 9,599 4,958 14,557 Utilities 5,567 4,487 10,054 5,291 3,471 8,762 Retail lending 467,206 84,057 551,263 464,329 86,421 550,750 Other 6,668 2,740 9,408 7,924 1,597 9,521 Total Australia 752,564 151,773 904,337 731,890 152,092 883,982 New Zealand Accommodation, cafes and restaurants 356 36 392 324 39 363 Agriculture, forestry and fishing 8,631 607 9,238 8,205 684 8,889 Construction 503 350 853 505 429 934 Finance and insurance 11,685 1,507 13,192 8,368 1,437 9,805 Government, administration and defence 6,667 856 7,523 4,867 691 5,558 Manufacturing 2,079 1,758 3,837 2,312 1,577 3,889 Mining 289 29 318 213 101 314 Property 6,977 1,120 8,097 6,252 1,035 7,287 Property services and business services 1,300 557 1,857 1,110 512 1,622 Services 2,023 577 2,600 1,762 613 2,375 Trade 2,441 1,259 3,700 2,573 1,023 3,596 Transport and storage 1,209 755 1,964 1,105 791 1,896 Utilities 1,938 1,447 3,385 1,418 1,564 2,982 Retail lending 49,542 12,056 61,598 46,700 12,114 58,814 Other 151 161 312 14 245 259 Total New Zealand 95,791 23,075 118,866 85,728 22,855 108,583 Other overseas Accommodation, cafes and restaurants 109 11 120 112 12 124 Agriculture, forestry and fishing 150 3 153 19 1 20 Construction 55 127 182 71 121 192 Finance and insurance 17,712 3,093 20,805 23,739 3,454 27,193 Government, administration and defence 5,646 23 5,669 4,252 50 4,302 Manufacturing 3,830 5,329 9,159 3,372 4,849 8,221 Mining 500 1,872 2,372 354 1,793 2,147 Property 493 29 522 468 57 525 Property services and business services 1,766 863 2,629 1,758 733 2,491 Services 244 637 881 207 448 655 Trade 2,318 2,859 5,177 2,323 3,330 5,653 Transport and storage 999 652 1,651 1,235 222 1,457 Utilities 1,088 931 2,019 765 329 1,094 Retail lending 864 37 901 684 45 729 Other 171 26 197 318 6 324 Total other overseas 35,945 16,492 52,437 39,677 15,450 55,127 Total gross credit risk 884,300 191,340 1,075,640 857,295 190,397 1,047,692 1. Comparatives have been restated for consistency. 2019 2018 1 Total on Undrawn Total on Undrawn Parent Entity balance credit balance credit $m sheet commitments Total sheet commitments Total Australia Accommodation, cafes and restaurants 7,989 1,070 9,059 8,247 1,404 9,651 Agriculture, forestry and fishing 9,191 2,014 11,205 8,604 2,035 10,639 Construction 6,853 3,340 10,193 6,260 3,324 9,584 Finance and insurance 158,418 7,316 165,734 156,489 7,781 164,270 Government, administration and defence 63,599 1,766 65,365 50,745 728 51,473 Manufacturing 10,322 5,850 16,172 9,754 5,738 15,492 Mining 3,304 3,802 7,106 3,609 3,078 6,687 Property 45,405 10,119 55,524 45,869 12,309 58,178 Property services and business services 13,348 5,898 19,246 12,533 5,595 18,128 Services 12,094 6,523 18,617 12,044 5,700 17,744 Trade 16,408 7,677 24,085 16,655 7,949 24,604 Transport and storage 9,221 5,114 14,335 9,202 4,957 14,159 Utilities 5,542 4,487 10,029 5,265 3,471 8,736 Retail lending 466,188 84,057 550,245 463,280 86,421 549,701 Other 5,684 2,740 8,424 6,499 1,574 8,073 Total Australia 833,566 151,773 985,339 815,055 152,064 967,119 New Zealand Accommodation, cafes and restaurants — — — — — — Agriculture, forestry and fishing 67 7 74 52 7 59 Construction 17 16 33 7 22 29 Finance and insurance 10,938 116 11,054 8,103 50 8,153 Government, administration and defence 2,196 8 2,204 1,039 29 1,068 Manufacturing 259 69 328 209 97 306 Mining 11 — 11 7 1 8 Property 117 3 120 52 8 60 Property services and business services 123 18 141 43 31 74 Services 46 1 47 25 44 69 Trade 392 170 562 324 234 558 Transport and storage 76 64 140 77 87 164 Utilities 507 73 580 374 146 520 Retail lending — 13 13 1 19 20 Other 37 1 38 1 1 2 Total New Zealand 14,786 559 15,345 10,314 776 11,090 Other overseas Accommodation, cafes and restaurants 67 10 77 70 12 82 Agriculture, forestry and fishing 130 1 131 4 1 5 Construction 47 125 172 59 113 172 Finance and insurance 60,388 3,067 63,455 63,043 3,442 66,485 Government, administration and defence 4,815 23 4,838 3,475 50 3,525 Manufacturing 3,822 5,269 9,091 3,367 4,741 8,108 Mining 497 1,869 2,366 355 1,791 2,146 Property 227 13 240 235 31 266 Property services and business services 1,683 862 2,545 1,668 730 2,398 Services 216 634 850 188 445 633 Trade 2,140 2,688 4,828 2,137 3,216 5,353 Transport and storage 888 643 1,531 1,129 214 1,343 Utilities 1,038 905 1,943 763 329 1,092 Retail lending 588 32 620 277 40 317 Other 133 14 147 238 4 242 Total other overseas 76,679 16,155 92,834 77,008 15,159 92,167 Total gross credit risk 925,031 168,487 1,093,518 902,377 167,999 1,070,376 1. Comparatives have been restated for consistency. 21.2.4 Credit quality of financial assets Credit quality disclosures (AASB 9) The following tables show the credit quality of gross credit risk exposures measured at amortised cost or at FVOCI to which the impairment requirements of AASB 9 apply. The credit quality is determined by reference to the credit risk ratings system (refer Note 21.2.1) and expectations of future economic conditions under multiple scenarios: Consolidated 2019 Parent Entity 2019 $m Stage 1 Stage 2 Stage 3 Total 1 Stage 1 Stage 2 Stage 3 Total 1 Loans - housing Strong 382,119 743 — 382,862 361,727 536 — 362,263 Good/Satisfactory 84,071 11,326 — 95,397 58,599 10,623 — 69,222 Weak 4,201 10,715 4,367 19,283 3,735 10,244 4,076 18,055 Total loans - housing 470,391 22,784 4,367 497,542 424,061 21,403 4,076 449,540 Loans - personal Strong 5,694 2 — 5,696 5,106 1 — 5,107 Good/Satisfactory 14,538 955 — 15,493 13,381 931 — 14,312 Weak 573 831 380 1,784 427 680 334 1,441 Total loans - personal 20,805 1,788 380 22,973 18,914 1,612 334 20,860 Loans - business 2 Strong 75,758 232 — 75,990 64,041 123 — 64,164 Good/Satisfactory 109,541 4,581 — 114,122 90,937 3,455 — 94,392 Weak 439 5,342 1,970 7,751 362 3,997 1,724 6,083 Total loans - business 185,738 10,155 1,970 197,863 155,340 7,575 1,724 164,639 Debt securities Strong 72,813 — — 72,813 68,309 — — 68,309 Good/Satisfactory 463 — — 463 23 — — 23 Weak — — — — — — — — Total debt securities 3 73,276 — — 73,276 68,332 — — 68,332 All other financial assets Strong 30,623 — — 30,623 162,339 — — 162,339 Good/Satisfactory 685 — — 685 496 — — 496 Weak 48 — — 48 41 — — 41 Total all other financial assets 31,356 — — 31,356 162,876 — — 162,876 Undrawn credit commitments Strong 148,525 328 — 148,853 132,776 317 — 133,093 Good/Satisfactory 39,782 1,294 — 41,076 33,097 1,122 — 34,219 Weak 142 1,135 134 1,411 123 937 115 1,175 Total undrawn credit commitments 188,449 2,757 134 191,340 165,996 2,376 115 168,487 Total strong 715,532 1,305 — 716,837 794,298 977 — 795,275 Total good/satisfactory 249,080 18,156 — 267,236 196,533 16,131 — 212,664 Total weak 5,403 18,023 6,851 30,277 4,688 15,858 6,249 26,795 Total on and off balance sheet 970,015 37,484 6,851 1,014,350 995,519 32,966 6,249 1,034,734 Details of collateral held in support of these balances are provided in Note 21.2.6. 1. This credit quality disclosure differs to that of credit risk concentration as it relates only to financial assets measured at amortised costs or at FVOCI and therefore excludes trading securities and financial assets measured at FVIS, and derivative financial instruments. 2. Included in strong is $131 million of exposure (Parent $131 million) that is covered by a highly rated guarantee, which if it were not considered, the exposure would be classified as weak. 3. Debt securities include $829 million at amortised cost for the Group and $27 million for the Parent Entity. $366 million of these are classified as strong for the Group and $4 million for the Parent Entity, and the rest are classified as good/satisfactory. Credit quality disclosures (AASB 139) The tables below segregate the financial assets of the Group and Parent Entity between financial assets that are neither past due nor impaired, past due but not impaired and impaired. The credit quality of financial assets that are neither past due nor impaired is determined by reference to the credit risk ratings system (refer to Note 21.2.1). as these tables do not reflect the adoption of AASB 9 they are not directly comparable to the credit quality tables above. Neither past due nor impaired Past due Total Consolidated 2018 Good/ but not Impairment carrying $m Strong 2 Satisfactory Weak 2 Total impaired Impaired Total provision value Cash and balances with central banks 3 26,555 233 — 26,788 — — 26,788 — 26,788 Collateral paid 4,787 — — 4,787 — — 4,787 — 4,787 Trading securities and financial assets measured at FVIS 4 22,718 145 — 22,863 — — 22,863 — 22,863 Derivative financial instruments 23,692 406 3 24,101 — — 24,101 — 24,101 Available-for-sale securities 4 60,229 506 — 60,735 — — 60,735 — 60,735 Loans: Loans - housing and personal 379,383 114,627 4,365 498,375 16,162 687 515,224 (1,303) 513,921 Loans - business 5 75,331 112,446 4,481 192,258 4,293 729 197,280 (1,511) 195,769 Other financial assets 5,025 434 18 5,477 37 3 5,517 — 5,517 Total 6 597,720 228,797 8,867 835,384 20,492 1,419 857,295 (2,814) 854,481 Neither past due nor impaired Past due Total Parent Entity 2018 Good/ but not Impairment carrying $m Strong 2 Satisfactory Weak 2 Total impaired Impaired Total provision value Cash and balances with central banks 3 24,850 126 — 24,976 — — 24,976 — 24,976 Collateral paid 4,722 — — 4,722 — — 4,722 — 4,722 Trading securities and financial assets measured at FVIS 4 21,199 145 — 21,344 — — 21,344 — 21,344 Derivative financial instruments 23,155 404 3 23,562 — — 23,562 — 23,562 Available-for-sale securities 4 56,443 3 — 56,446 — — 56,446 — 56,446 Loans: Loans - housing and personal 359,843 87,667 4,050 451,560 15,044 572 467,176 (1,125) 466,051 Loans - business 5 61,918 95,649 3,412 160,979 3,838 582 165,399 (1,282) 164,117 Due from subsidairies 7 134,086 — — 134,086 — — 134,086 — 134,086 Other financial assets 4,282 334 15 4,631 33 2 4,666 — 4,666 Total 6 690,498 184,328 7,480 882,306 18,915 1,156 902,377 (2,407) 899,970 Details of collateral held in support of these balances are provided in Note 21.2.6. 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Included in strong is $146 million of exposure for both the Group and the Parent Entity that is covered by a highly rated guarantee, which if it were not considered, the exposure would be classified as weak. 3. In prior years, cash and balances with central banks were not disclosed. These balances have now been included. 4. Exclude equity securities. 5. Loans - business classified as strong was restated from $90,408 million to $75,331 million for the Group, and from $76,995 million to $61,918 million for the Parent Entity. In addition, balances classified under good/satisfactory were reclassified from $97,369 million to $112,446 million for the Group, and from $80,572 million to $95,649 million for the Parent Entity. 6. Total amount disclosed as 'strong' was restated from $586,393 million to $597,720 million for the Group, and from $687,386 million to $690,498 million for the Parent Entity. Total amount disclosed as good/satisfactory was restated from $213,693 million to $228,797 million for the Group, and from $210,856 million to $184,328 million. 7. Due from subsidiaries

Fair values of financial assets

Fair values of financial assets and financial liabilities	12 Months Ended
	Sep. 30, 2019
Fair values of financial assets and financial liabilities
Fair values of financial assets and financial liabilities	Note 22. Fair values of financial assets and financial liabilities Accounting policy The fair value of a financial instrument is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. On initial recognition, the transaction price generally represents the fair value of the financial instrument unless there is observable information from an active market to the contrary. Where unobservable information is used, the difference between the transaction price and the fair value (day one profit or loss) is recognised in the income statement over the life of the instrument when the inputs become observable. Critical accounting assumptions and estimates The majority of valuation models used by the Group employ only observable market data as inputs. However, for certain financial instruments data may be employed which is not readily observable in current markets. The availability of observable inputs is influenced by factors such as: ▪ product type; ▪ depth of market activity; ▪ maturity of market models; and ▪ complexity of the transaction. Where unobservable market data is used, more judgement is required to determine fair value. The significance of these judgements depends on the significance of the unobservable input to the overall valuation. Unobservable inputs are generally derived from other relevant market data and adjusted against: ▪ standard industry practice; ▪ economic models; and ▪ observed transaction prices. In order to determine a reliable fair value for a financial instrument, management may apply adjustments to the techniques previously described. These adjustments reflect the Group’s assessment of factors that market participants would consider in setting the fair value. These adjustments incorporate bid/offer spreads, credit valuation adjustments and funding valuation adjustments. Fair Valuation Control Framework The Group uses a Fair Valuation Control Framework where the fair value is either determined or validated by a function independent of the transaction. This framework formalises the policies and procedures used to achieve compliance with relevant accounting, industry and regulatory standards. The framework includes specific controls relating to: ▪ the revaluation of financial instruments; ▪ independent price verification; ▪ fair value adjustments; and ▪ financial reporting. A key element of the framework is the Revaluation Committee, comprising senior valuation specialists from within the Group. The Revaluation Committee reviews the application of the agreed policies and procedures to assess that a fair value measurement basis has been applied. The method of determining fair value differs depending on the information available. Fair value hierarchy A financial instrument’s categorisation within the valuation hierarchy is based on the lowest level input that is significant to the fair value measurement. The Group categorises all fair value instruments according to the hierarchy described below. Valuation techniques The Group applies market accepted valuation techniques in determining the fair valuation of over the counter (OTC) derivatives. This includes credit valuation adjustments (CVA) and funding valuation adjustments (FVA), which incorporate credit risk and funding costs and benefits that arise in relation to uncollateralised derivative positions, respectively. The specific valuation techniques, the observability of the inputs used in valuation models and the subsequent classification for each significant product category are outlined as follows: Level 1 instruments The fair value of financial instruments traded in active markets is based on recent unadjusted quoted prices. These prices are based on actual arm’s length basis transactions. The valuations of Level 1 instruments require little or no management judgement. Instrument Balance Sheet Category Includes: Valuation Exchange traded products Derivatives Exchange traded interest rate futures and options and commodity, energy and carbon futures Foreign exchange products Derivatives FX spot and futures contracts Equity products Derivatives Trading securities and financial assets measured at FVIS Other financial liabilities Listed equities and equity indices _ All these instruments are traded in liquid, active markets where prices are readily observable. No modelling or assumptions are used in the valuation. Non-asset backed debt instruments Trading securities and financial assets measured at FVIS Australian Commonwealth and New Zealand government bonds Available-for-sale securities/Investment securities Other financial liabilities Life insurance assets and liabilities Life insurance assets Life insurance liabilities Listed equities, exchange traded derivatives and short sale of listed equities within controlled managed investment schemes Level 2 instruments The fair value for financial instruments that are not actively traded is determined using valuation techniques which maximise the use of observable market prices. Valuation techniques include: ▪ the use of market standard discounting methodologies; ▪ option pricing models; and ▪ other valuation techniques widely used and accepted by market participants. Instrument Balance Sheet Category Includes: Valuation Interest rate products Derivatives Interest rate and inflation swaps, swaptions, caps, floors, collars and other non-vanilla interest rate derivatives Industry standard valuation models are used to calculate the expected future value of payments by product, which is discounted back to a present value. The model’s interest rate inputs are benchmark interest rates and active broker quoted interest rates in the swap, bond and future markets. Interest rate volatilities are sourced from brokers and consensus data providers. If consensus prices are not available, these are classified as Level 3 instruments. Foreign exchange products Derivatives FX swap, FX forward contracts, FX options and other non-vanilla FX derivatives Derived from market observable inputs or consensus pricing providers using industry standard models. Other credit products Derivatives Single Name and Index credit default swaps (CDS) Valued using an industry standard model that incorporates the credit spread as its principal input. Credit spreads are obtained from consensus data providers. If consensus prices are not available, these are classified as Level 3 instruments. Commodity products Derivatives Commodity, energy and carbon derivatives Valued using industry standard models. The models calculate the expected future value of deliveries and payments and discount them back to a present value. The model inputs include forward curves, volatilities implied from market observable inputs, discount curves and underlying spot and futures prices. The significant inputs are market observable or available through a consensus data service. If consensus prices are not available, these are classified as Level 3 instruments. Equity products Derivatives Exchange traded equity options, OTC equity options and equity warrants Due to low liquidity, exchange traded options are Level 2. Valued using industry standard models based on observable parameters such as stock prices, dividends, volatilities and interest rates. Asset backed debt instruments Trading securities and financial assets measured at FVIS Available-for-sale securities/Investment securities Australian residential mortgage backed securities (RMBS) denominated in Australian dollar and other asset backed securities (ABS) Valued using an industry approach to value floating rate debt with prepayment features. Australian RMBS are valued using prices sourced from a consensus data provider. If consensus prices are not available these are classified as Level 3 instruments. Non-asset backed debt instruments Trading securities and financial assets measured at FVIS Available-for-sale securities/Investment securities Other financial liabilities State and other government bonds, corporate bonds and commercial paper Repurchase agreements and reverse repurchase agreements over non-asset backed debt securities Valued using observable market prices which are sourced from independent pricing services, broker quotes or inter-dealer prices. Loans at fair value Loans Fixed rate bills and syndicated loans Discounted cash flow approach, using a discount rate which reflects the terms of the instrument and the timing of cash flows, adjusted for creditworthiness, or expected sale amount. Certificates of deposit Deposits and other borrowings Certificates of deposit Discounted cash flow using market rates offered for deposits of similar remaining maturities. Debt issues at fair value Debt issues Debt issues Discounted cash flows, using a discount rate which reflects the terms of the instrument and the timing of cash flows adjusted for market observable changes in Westpac’s implied credit worthiness. Life insurance assets and liabilities Life insurance assets Life insurance liabilities Corporate bonds, over the counter derivatives, units in unlisted unit trusts, life insurance contract liabilities, life investment contract liabilities and external liabilities of managed investment schemes controlled by statutory life funds Valued using observable market prices or other widely used and accepted valuation techniques utilising observable market input. Level 3 instruments Financial instruments valued where at least one input that could have a significant effect on the instrument’s valuation is not based on observable market data due to illiquidity or complexity of the product. These inputs are generally derived and extrapolated from other relevant market data and calibrated against current market trends and historical transactions. These valuations are calculated using a high degree of management judgement. Instrument Balance Sheet Category Includes: Valuation Asset backed debt instruments Trading securities and financial assets measured at FVIS Collateralised loan obligations As prices for these securities are not available from a consensus provider these are revalued based on third party revaluations (lead manager or inter-dealer). Due to their illiquidity and/or complexity they are classified as Level 3 assets. Non-asset backed debt instruments Trading securities and financial assets measured at FVIS Available-for-sale securities/Investment securities Offshore non-asset backed debt instruments and debt securities issued via private placement These securities are evaluated by an independent pricing service or based on third party revaluations. Due to their illiquidity and/or complexity these are classified as Level 3 assets. Equity investments Trading securities and financial assets measured at FVIS Available-for-sale securities/Investment securities Strategic equity investments, investments in unlisted funds and investments in boutique investment management companies Valued using valuation techniques appropriate to the investment, including the use of recent arm’s length transactions where available, discounted cash flow approach, reference to the net assets of the entity or to the most recent fund unit pricing. Due to their illiquidity, complexity and/or use of unobservable inputs into valuation models, they are classified as Level 3 assets. The tables below summarise the attribution of financial instruments measured at fair value to the fair value hierarchy: 2019 2018 Valuation Valuation Valuation Valuation Quoted techniques techniques Quoted techniques techniques market (Market (Non-market market (Market (Non-market Consolidated prices observable) observable) prices observable) observable) $m (Level 1) (Level 2) (Level 3) Total (Level 1) (Level 2) (Level 3) Total Financial assets measured at fair value on a recurring basis Trading securities and financial assets measured at FVIS 10,440 21,121 220 31,781 8,958 13,844 330 23,132 Derivative financial instruments 7 29,828 24 29,859 20 24,066 15 24,101 Available-for-sale securities — — — — 11,996 48,504 619 61,119 Investment securities 11,163 61,284 134 72,581 — — — — Loans 2 — 239 21 260 — 546 — 546 Life insurance assets 1,097 8,270 — 9,367 1,345 8,105 — 9,450 Total financial assets measured at fair value on a recurring basis 22,707 120,742 399 143,848 22,319 95,065 964 118,348 Financial liabilities measured at fair value on a recurring basis Deposits and other borrowings 3 — 38,413 — 38,413 — 41,178 — 41,178 Other financial liabilities 4 262 5,108 — 5,370 496 3,801 — 4,297 Derivative financial instruments 8 29,059 29 29,096 76 24,325 6 24,407 Debt issues 5 — 5,819 — 5,819 — 3,355 — 3,355 Life insurance liabilities — 7,377 — 7,377 — 7,597 — 7,597 Total financial liabilities measured at fair value on a recurring basis 270 85,776 29 86,075 572 80,256 6 80,834 2019 2018 Valuation Valuation Valuation Valuation Quoted techniques techniques Quoted techniques techniques market (Market (Non-market market (Market (Non-market Parent Entity prices observable) observable) prices observable) observable) $m (Level 1) (Level 2) (Level 3) Total (Level 1) (Level 2) (Level 3) Total Financial assets measured at fair value on a recurring basis Trading securities and financial assets measured at FVIS 10,213 19,159 193 29,565 8,952 12,257 206 21,415 Derivative financial instruments 7 29,253 23 29,283 20 23,529 13 23,562 Available-for-sale securities — — — — 10,657 45,786 70 56,513 Investment securities 10,191 58,114 66 68,371 — — — — Loans 2 — 239 21 260 — 546 — 546 Due from subsidiaries 6 — 897 — 897 — 278 — 278 Total financial assets measured at fair value on a recurring basis 20,411 107,662 303 128,376 19,629 82,396 289 102,314 Financial liabilities measured at fair value on a recurring basis Deposits and other borrowings 3 — 37,355 — 37,355 — 40,062 — 40,062 Other financial liabilities 4 262 5,108 — 5,370 496 3,801 — 4,297 Derivative financial instruments 8 28,831 28 28,867 76 24,147 6 24,229 Debt issues 5 — 3,624 — 3,624 — 3,223 — 3,223 Due to subsidiaries 6 — 1,591 — 1,591 — 523 — 523 Total financial liabilities measured at fair value on a recurring basis 270 76,509 28 76,807 572 71,756 6 72,334 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. As at 30 September 2018, loans measured at fair value were restated from $3,250 million to $546 million for both the Group and the Parent Entity. 3. The contractual outstanding amount payable at maturity for the Group is $38,468 million (2018: $41,330 million) and for the Parent Entity is $37,410 million (2018: $40,214 million). 4. The contractual outstanding amount payable at maturity for the Group and the Parent Entity is $5,369 million (2018: $4,298 million). 5. The contractual outstanding amount payable at maturity for the Group is $5,632 million (2018: $3,475 million) and for the Parent Entity is $3,436 million (2018: $3,344 million). The cumulative change in the fair value of debt issues attributable to changes in Westpac's own credit risk is $34 million decrease (2018: $45 million decrease) for the Group and Parent Entity. 6. As at 30 September 2018, the balances disclosed have been restated to include due from subsidiaries and due to subsidiaries measured at fair value. Reconciliation of non-market observables 1 The following tables summarise the changes in financial instruments measured at fair value derived from non-market observable valuation techniques (Level 3): Trading securities and financial assets Available- Total Total Consolidated 2019 measured for-sale Investment Level 3 Level 3 $m at FVIS securities securities Other 2 assets Derivatives liabilities Balance as at beginning of year 330 619 — 15 964 6 6 Impact on adoption of AASB 9 4 (619) 109 14 (492) — — Restated opening balance 334 — 109 29 472 6 6 Gains/(losses) on assets and (gains)/ losses on liabilities recognised in: Income statements 36 — — 12 48 7 7 Other comprehensive income — — 11 — 11 — — Acquisition and issues 63 — 36 16 115 4 4 Disposal and settlements (216) — (22) (12) (250) (6) (6) Transfer into or out of non-market observables — — — — — 18 18 Foreign currency translation impacts 3 — — — 3 — — Balance as at end of year 220 — 134 45 399 29 29 Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year 26 — — 16 42 (11) (11) Trading securities and financial assets Available- Total Total Consolidated 2018 measured for-sale Level 3 Level 3 $m at FVIS securities Other 2 assets Derivatives liabilities Balance as at beginning of year 1,399 Gains/(losses) on assets/(gains)/losses on liabilities recognised in: Income statements 2 — 1 1 1 Available-for-sale securities reserve — (7) — (7) — — Acquisition and issues 67 1,446 3 1,516 1 1 Disposal and settlements (433) (1,456) (4) (1,893) (5) (5) Transfer into or out of non-market observables (75) — — (75) — — Foreign currency translation impacts 2 19 — — — Balance as at end of year 330 619 15 6 6 Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year (7) — 4 (3) (2) (2) 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. Other is comprised of derivative financial assets and, for 2019 only, certain loans. Trading securities and financial assets Available- Total Total Parent Entity 2019 measured for-sale Investment Level 3 Level 3 $m at FVIS securities securities Other 2 assets Derivatives liabilities Balance as at beginning of year 206 70 — 13 289 6 6 Impact on adoption of AASB 9 — (70) 67 14 11 — — Restated opening balance 206 — 67 27 300 6 6 Gains/(losses) on assets and (gains)/ losses on liabilities recognised in: Income statements 6 — — 13 19 6 6 Other comprehensive income — — — — — — — Acquisition and issues 17 — 2 16 35 4 4 Disposal and settlements (39) — (3) (12) (54) (6) (6) Transfer into or out of non-market observables — — — — — 18 18 Foreign currency translation impacts 3 — — — 3 — — Balance as at end of year 193 — 66 44 303 28 28 Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year 3 — — 16 19 (10) (10) Trading securities and financial assets Available- Total Total Parent Entity 2018 measured for-sale Level 3 Level 3 $m at FVIS securities Other 2 assets Derivatives liabilities Balance as at beginning of year 501 64 15 580 9 9 Gains/(losses) on assets/(gains)/losses on liabilities recognised in: Income statements 6 — 1 7 1 1 Available-for-sale securities reserve — 2 — 2 — — Acquisition and issues 21 18 3 42 1 1 Disposal and settlements (268) (14) (6) (288) (5) (5) Transfer into or out of non-market observables (53) — — (53) — — Foreign currency translation impacts (1) — — (1) — — Balance as at end of year 206 70 13 289 6 6 Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year 5 — 4 9 (2) (2) 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. Other is comprised of derivative financial assets and, for 2019 only,certain loans. Transfers into and out of Level 3 have occurred due to changes in observability in the significant inputs into the valuation models used to determine the fair value of the related financial instruments. Transfers in and transfers out are reported using the end of year fair values. Significant unobservable inputs Sensitivities to reasonably possible changes in non-market observable valuation assumptions would not have a material impact on the Group’s reported results. Day one profit or loss The closing balance of unrecognised day one profit for both the Group and the Parent Entity for the year was $3 million (2018: $4 million profit). Financial instruments not measured at fair value For financial instruments not measured at fair value on a recurring basis, fair value has been derived as follows: Instrument Valuation Loans Where available, the fair value of loans is based on observable market transactions, otherwise fair value is estimated using discounted cash flow models. For variable rate loans, the discount rate used is the current effective interest rate. The discount rate applied for fixed rate loans reflects the market rate for the maturity of the loan and the credit worthiness of the borrower. Investment securities The carrying value approximates the fair value. The balance principally relates to government securities from illiquid markets. Fair value is monitored by reference to recent issuances. Deposits and other borrowings Fair values of deposit liabilities payable on demand (interest free, interest bearing and savings deposits) approximate their carrying value. Fair values for term deposits are estimated using discounted cash flows, applying market rates offered for deposits of similar remaining maturities. Debt issues and loan capital Fair values are calculated using a discounted cash flow model. The discount rates applied reflect the terms of the instruments, the timing of the estimated cash flows and are adjusted for any changes in Westpac’s credit spreads. All other financial assets and liabilities For all other financial assets and liabilities, the carrying value approximates the fair value. These items are either short-term in nature, re-price frequently or are of a high credit rating. The following tables summarise the estimated fair value and fair value hierarchy of financial instruments not measured at fair value: 2019 Fair value Valuation Valuation Quoted techniques techniques market (Market (Non-market Consolidated Carrying prices observable) observable) $m amount (Level 1) (Level 2) (Level 3) Total Financial assets not measured at fair value Cash and balances with central banks 20,059 20,059 — — 20,059 Collateral paid 5,930 5,930 — — 5,930 Investment securities 820 — 366 454 820 Loans 714,510 — — 716,130 716,130 Other financial assets 5,367 — 5,367 — 5,367 Total financial assets not measured at fair value 746,686 25,989 5,733 716,584 748,306 Financial liabilities not measured at fair value Collateral received 3,287 3,287 — — 3,287 Deposits and other borrowings 524,834 — 522,726 2,790 525,516 Other financial liabilities 23,845 — 23,845 — 23,845 Debt issues 2 175,638 — 176,838 — 176,838 Loan capital 21,826 — 22,076 — 22,076 Total financial liabilities not measured at fair value 749,430 3,287 745,485 2,790 751,562 2018 Fair value Valuation Valuation Quoted techniques techniques market (Market (Non-market Consolidated Carrying prices observable) observable) $m amount (Level 1) (Level 2) (Level 3) Total Financial assets not measured at fair value Cash and balances with central banks 26,788 26,788 — — 26,788 Collateral paid 4,787 4,787 — — 4,787 Loans 3 709,144 — — 709,446 709,446 Other financial assets 5,517 — 5,517 — 5,517 Total financial assets not measured at fair value 746,236 31,575 5,517 709,446 746,538 Financial liabilities not measured at fair value Collateral received 2,184 2,184 — — 2,184 Deposits and other borrowings 518,107 — 515,953 2,838 518,791 Other financial liabilities 23,808 — 23,808 — 23,808 Debt issues 2 169,241 — 170,060 — 170,060 Loan capital 17,265 — 17,438 — 17,438 Total financial liabilities not measured at fair value 730,605 2,184 727,259 2,838 732,281 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. The estimated fair value of debt issues includes the impact of changes in Westpac's credit spreads since origination. 3. As at 30 September 2018, loans measured at amortised cost were restated from $706,440 million to $709,144 million. Accordingly, the fair value estimates were also restated from $706,742 million to $709,446 million. 2019 Fair value Valuation Valuation Quoted techniques techniques market (Market (Non-market Parent Entity Carrying prices Observable) observable) $m amount (Level 1) (Level 2) (Level 3) Total Financial assets not measured at fair value Cash and balances with central banks 17,692 17,692 — — 17,692 Collateral paid 5,773 5,773 — — 5,773 Investment securities 27 — 4 23 27 Loans 631,676 — — 633,003 633,003 Due from subsidiaries 2 133,899 — 89,680 45,175 134,855 Other financial assets 4,615 — 4,615 — 4,615 Total financial assets not measured at fair value 793,682 23,465 94,299 678,201 795,965 Financial liabilities not measured at fair value Collateral received 2,849 2,849 — — 2,849 Deposits and other borrowings 464,075 — 463,440 1,251 464,691 Other financial liabilities 23,146 — 23,146 — 23,146 Debt issues 3 153,050 — 154,111 — 154,111 Due to subsidiaries 2 147,016 — 6,553 140,463 147,016 Loan capital 21,826 — 22,076 — 22,076 Total financial liabilities not measured at fair value 811,962 2,849 669,326 141,714 813,889 2018 Fair value Valuation Valuation Quoted techniques techniques market (Market (Non-market Parent Entity Carrying prices observable) observable) $m amount (Level 1) (Level 2) (Level 3) Total Financial assets not measured at fair value Cash and balances with central banks 24,976 24,976 — — 24,976 Collateral paid 4,722 4,722 — — 4,722 Loans 4 629,622 — — 629,774 629,774 Due from subsidiaries 2 133,808 — 88,368 46,295 134,663 Other financial assets 4,666 — 4,666 — 4,666 Total financial assets not measured at fair value 797,794 29,698 93,034 676,069 798,801 Financial liabilities not measured at fair value Collateral received 1,748 1,748 — — 1,748 Deposits and other borrowings 460,406 — 459,841 1,213 461,054 Other financial liabilities 22,969 — 22,969 — 22,969 Debt issues 3 149,065 — 149,800 — 149,800 Due to subsidiaries 2 141,877 — 6,933 134,944 141,877 Loan capital 17,265 — 17,438 — 17,438 Total financial liabilities not measured at fair value 793,330 1,748 656,981 136,157 794,886 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. Due from subsidiaries excludes $8,165 million (2018: $6,511 million) of long-term debt instruments with equity-like characteristics which are part of the total investment in subsidiaries. As at 30 September 2018, the due from subsidiaries measured at amortised cost was restated from $140,597 million to $133,808 million, and due to subsidiaries measured at amortised cost was restated from $142,400 million to $141,877 million. Accordingly, the fair value estimate of due from subsidiaries was restated from $140,597 million (all within Level 3) to $134,663 million (split between Level 2 and Level 3), and the fair value estimate of due to subsidiaries was restated from $142,400 million (all within Level 3) to $141,877 million (split between Level 2 and Level 3). 3. The estimated fair value of debt issues includes the impact of changes in Westpac's credit spreads since origination. 4. As at 30 September 2018, loans measured at amortised cost were restated from $626,918 million to $629,622 million. Accordingly, the fair value estimates were also restated from $627,070 million to $629,774 million.

Offsetting financial assets and

Offsetting financial assets and financial liabilities	12 Months Ended
	Sep. 30, 2019
Offsetting financial assets and financial liabilities
Offsetting financial assets and financial liabilities	Note 23. Offsetting financial assets and financial liabilities 1 Accounting policy Financial assets and liabilities are presented net in the balance sheet when the Group has a legally enforceable right to offset them in all circumstances and there is an intention to settle the asset and liability on a net basis, or to realise the asset and settle the liability simultaneously. The gross assets and liabilities behind the net amounts reported in the balance sheet are disclosed in the table below. Some of the Group’s offsetting arrangements are not enforceable in all circumstances. The amounts in the tables below may not tie back to the balance sheet if there are balances which are not subject to offsetting or enforceable netting arrangements. The amounts presented in this note do not represent the credit risk exposure of the Group or Parent Entity. Refer to Note 21.2 for information on credit risk management. The offsetting and collateral arrangements and other credit risk mitigation strategies used by the Group are further explained in the ‘Management of risk mitigation’ section of Note 21.2.2. Effects of offsetting Amounts subject to enforceable on balance sheet netting arrangements but not offset Net amounts Other reported on recognised Financial Consolidated Gross Amounts the balance financial Cash instrument Net $m amounts offset sheet instruments collateral 2,3 collateral amount 2019 Assets Collateral paid 4 6,643 (6,559) 84 — — (17) 67 Derivative financial instruments 61,464 (31,605) 29,859 (18,609) (3,280) (102) 7,868 Reverse repurchase agreements 5 6,833 — 6,833 — (9) (6,824) — Loans 6 18,202 (18,130) 72 — — — 72 Total assets 93,142 (56,294) 36,848 (18,609) (3,289) (6,943) 8,007 Liabilities Collateral received 3,024 (2,972) 52 — — — 52 Derivative financial instruments 64,288 (35,192) 29,096 (18,609) (5,622) (1,932) 2,933 Repurchase agreements 7 10,604 — 10,604 — (3) (10,601) — Deposits and other borrowings 6 28,880 (18,130) 10,750 — — — 10,750 Total liabilities 106,796 (56,294) 50,502 (18,609) (5,625) (12,533) 13,735 2018 Assets Collateral paid 4 4,196 (4,162) 34 — — (14) 20 Derivative financial instruments 32,828 (8,727) 24,101 (15,962) (2,184) (14) 5,941 Reverse repurchase agreements 5 1,379 — 1,379 — (3) (1,376) — Loans 6 8,519 (8,420) 99 — — — 99 Total assets 46,922 (21,309) 25,613 (15,962) (2,187) (1,404) 6,060 Liabilities Derivative financial instruments 37,296 (12,889) 24,407 (15,962) (4,487) (1,544) 2,414 Repurchase agreements 7 9,522 — 9,522 — — (9,522) — Deposits and other borrowings 6 20,486 (8,420) 12,066 — — — 12,066 Total liabilities 67,304 (21,309) 45,995 (15,962) (4,487) (11,066) 14,480 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. $3,287 million (2018: $2,184 million) of cash collateral, subject to enforceable netting arrangements with derivative financial assets and reverse repurchase agreements, forms part of collateral received as disclosed on the balance sheet. The remainder is included in term deposits recognised in deposits and other borrowings within Note 16. 3. $5,625 million (2018: $4,487 million) of cash collateral, subject to enforceable netting arrangements with derivative financial liabilities and repurchase agreements, forms part of collateral paid as disclosed on the balance sheet. The remainder of collateral paid, as disclosed on the balance sheet, consists of $18 million (2018: $14 million) in stock borrowing arrangements and $287 million (2018: $286 million) related to futures margin that does not form part of this column. 4. Gross amounts consist of variation margin held directly with central clearing counterparties and stock borrowing arrangements. Where variation margin is receivable it is reported as part of collateral paid. Where variation margin is payable it is reported as part of collateral received. Amounts offset relate to variation margin. 2018 restated to exclude $61 million of initial margin. 5. Reverse repurchase agreements form part of trading securities and financial assets measured at FVIS in Note 10. 6. Gross amounts consist of debt and interest set-off accounts which meet the requirements for offsetting as described above. These accounts form part of business loans in Note 12 and part of deposits and other borrowings at amortised cost in Note 16. 7. Repurchase agreements form part of other financial liabilities in Note 17. Effects of offsetting Amounts subject to enforceable on balance sheet netting arrangements but not offset Net amounts Other reported on recognised Financial Parent Entity Gross Amounts the balance financial Cash instrument Net $m amounts offset sheet instruments collateral 2,3 collateral amount 2019 Assets Collateral paid 4 6,643 (6,559) 84 — — (17) 67 Derivative financial instruments 60,888 (31,605) 29,283 (18,526) (2,842) (102) 7,813 Reverse repurchase agreements 5 6,731 — 6,731 — (9) (6,722) — Loans 6 18,202 (18,130) 72 — — — 72 Total assets 92,464 (56,294) 36,170 (18,526) (2,851) (6,841) 7,952 Liabilities Collateral received 3,024 (2,972) 52 — — — 52 Derivative financial instruments 64,059 (35,192) 28,867 (18,526) (5,466) (1,932) 2,943 Repurchase agreements 7 10,604 — 10,604 — (3) (10,601) — Deposits and other borrowings 6 28,880 (18,130) 10,750 — — — 10,750 Total liabilities 106,567 (56,294) 50,273 (18,526) (5,469) (12,533) 13,745 2018 Assets Collateral paid 4 4,196 (4,162) 34 — — (14) 20 Derivative financial instruments 32,289 (8,727) 23,562 (15,862) (1,748) (14) 5,938 Reverse repurchase agreements 5 1,379 — 1,379 — (3) (1,376) — Loans 6 8,519 (8,420) 99 — — — 99 Total assets 46,383 (21,309) 25,074 (15,862) (1,751) (1,404) 6,057 Liabilities Derivative financial instruments 37,118 (12,889) 24,229 (15,862) (4,423) (1,544) 2,400 Repurchase agreements 7 9,522 — 9,522 — — (9,522) — Deposits and other borrowings 6 20,486 (8,420) 12,066 — — — 12,066 Total liabilities 67,126 (21,309) 45,817 (15,862) (4,423) (11,066) 14,466 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. $2,849 million (2018: $1,748 million) of cash collateral, subject to enforceable netting arrangements with derivative financial assets and reverse repurchase agreements, forms part of collateral received as disclosed on the balance sheet. The remainder is included in term deposits recognised in deposits and other borrowings within Note 16. 3. $5,469 million (2018: $4,423 million) of cash collateral, subject to enforceable netting arrangements with derivative financial liabilities and repurchase agreements, forms part of collateral paid as disclosed on the balance sheet. The remainder of collateral paid, as disclosed on the balance sheet, consists of $18 million (2018: $14 million) in stock borrowing arrangements and $286 million (2018: $285 million) related to futures margin that does not form part of this column. 4. Gross amounts consist of variation margin held directly with central clearing counterparties and stock borrowing arrangements. Where variation margin is receivable it is reported as part of collateral paid. Where variation margin is payable it is reported as part of collateral received. Amounts offset relate to variation margin. 2018 restated to exclude $61 million of initial margin. 5. Reverse repurchase agreements form part of trading securities and financial assets measured at FVIS in Note 10. 6. Gross amounts consist of debt and interest set-off accounts which meet the requirements for offsetting as described above. These accounts form part of business loans in Note 12 and part of deposits and other borrowings at amortised cost in Note 16. 7. Repurchase agreements form part of other financial liabilities in Note 17. Other recognised financial instruments These financial assets and liabilities are subject to master netting agreements which are not enforceable in all circumstances, so they are recognised gross in the balance sheet. The offsetting rights of the master netting arrangements can only be enforced if a predetermined event occurs in the future, such as a counterparty defaulting. Cash collateral and financial instrument collateral These amounts are received or pledged under master netting arrangements against the gross amounts of assets and liabilities. Financial instrument collateral typically comprises securities which can be readily liquidated in the event of counterparty default. The offsetting rights of the master netting arrangement can only be enforced if a predetermined event occurs in the future, such as a counterparty defaulting.

Securitisation, covered bonds a

Securitisation, covered bonds and other transferred assets	12 Months Ended
	Sep. 30, 2019
Securitisation, covered bonds and other transferred assets
Securitisation, covered bonds and other transferred assets	Note 24. Securitisation, covered bonds and other transferred assets The Group enters into transactions in the normal course of business by which financial assets are transferred to counterparties or structured entities. Depending on the circumstances, these transfers may result in derecognition of the assets in their entirety, partial derecognition or no derecognition of the assets subject to the transfer. For the Group’s accounting policy on derecognition of financial assets refer to the notes to the financial statements section before Note 10 titled ‘Financial assets and financial liabilities’. Securitisation Securitisation is the transferring of assets (or an interest in either the assets or the cash flows arising from the assets) to a structured entity which then issues the majority of interest bearing debt securities to third party investors for funding deals and to Westpac for liquidity deals. Securitisation of its own assets is used by Westpac as a funding and liquidity tool. For securitisation structured entities which Westpac controls, as defined in Note 31, the structured entities are classified as subsidiaries and consolidated. When assessing whether Westpac controls a structured entity, it considers its exposure to and ability to affect variable returns. Westpac may have variable returns from a structured entity through ongoing exposures to the risks and rewards associated with the assets, the provision of derivatives, liquidity facilities, trust management and operational services. Undrawn funding and liquidity facilities of $537 million were provided by Westpac (2018: $517 million) for the securitisation of its own assets. Covered bonds The Group has two covered bond programs relating to Australian residential mortgages (Australian Program) and New Zealand residential mortgages (New Zealand Program). Under these programs, selected pools of residential mortgages are assigned to bankruptcy remote structured entities which provide guarantees on the payments to bondholders. Through the guarantees and derivatives with the structured entities, Westpac has variable returns from these structured entities and consolidates them. Repurchase agreements Where securities are sold subject to an agreement to repurchase at a predetermined price, they remain recognised on the balance sheet in their original category (i.e. Trading securities or Investment securities/Available-for-sale securities). The cash consideration received is recognised as a liability (Repurchase agreements). Refer to Note 17 for further details. The following table presents Westpac’s assets transferred and their associated liabilities: For those liabilities that only have recourse to the transferred assets: Carrying Carrying Fair Fair amount of amount of value of value of Net fair Consolidated transferred associated transferred associated value $m assets liabilities assets liabilities position 2019 Securitisation 1 8,221 8,190 8,268 8,177 91 Covered bonds 2 44,676 38,037 n/a n/a n/a Repurchase agreements 13,754 10,604 n/a n/a n/a Total 66,651 56,831 8,268 8,177 91 2018 Securitisation 1 7,631 7,588 7,662 7,565 97 Covered bonds 2 43,088 35,434 n/a n/a n/a Repurchase agreements 12,492 9,522 n/a n/a n/a Total 63,211 52,544 7,662 7,565 97 For those liabilities that only have recourse to the transferred assets: Carrying Carrying Fair Fair amount of amount of value of value of Net fair Parent Entity transferred associated transferred associated value $m assets liabilities assets liabilities position 2019 Securitisation 1 101,689 101,146 101,871 100,268 1,603 Covered bonds 2 37,697 33,160 n/a n/a n/a Repurchase agreements 13,754 10,604 n/a n/a n/a Total 153,140 144,910 101,871 100,268 1,603 2018 Securitisation 1 97,259 96,728 97,291 96,473 818 Covered bonds 2 36,190 30,268 n/a n/a n/a Repurchase agreements 12,492 9,522 n/a n/a n/a Total 145,941 136,518 97,291 96,473 818 1. The carrying amount of assets securitised exceeds the amount of notes issued primarily because the carrying amount includes both principal and income received from the transferred assets. 2. The difference between the carrying values of covered bonds and the assets pledged reflects the over-collateralisation required to maintain the ratings of the covered bonds and also additional assets to allow immediate issuance of additional covered bonds if required. These additional assets can be repurchased by Westpac at its discretion, subject to the conditions set out in the transaction documents.

Intangible assets

Intangible assets	12 Months Ended
	Sep. 30, 2019
Intangible assets
Intangible assets	INTANGIBLE ASSETS, PROVISIONS, COMMITMENTS AND CONTINGENCIES Note 25. Intangible assets Accounting policy Indefinite life intangible assets Goodwill Goodwill acquired in a business combination is initially measured at cost, generally being the excess of: (i) the consideration paid; over (ii) the net fair value of the identifiable assets, liabilities and contingent liabilities acquired. Subsequently, goodwill is not amortised but rather tested for impairment. Impairment is tested at least annually or whenever there is an indication of impairment. An impairment charge is recognised when a cash generating unit’s (CGU) carrying value exceeds its recoverable amount. Recoverable amount means the higher of the CGU’s fair value less costs to sell and its value-in-use. Brand names Brand names acquired in a business combination including St.George, BT, BankSA and RAMS, are recognised at cost. Subsequently brand names are not amortised but tested for impairment at least annually or whenever there is an indication of impairment. Finite life intangible assets Finite life intangibles including computer software and core deposits, are recognised initially at cost and subsequently at amortised cost less any impairment. Intangible Useful life Depreciation method Goodwill Indefinite Not applicable Brand names Indefinite Not applicable Computer software 3 to 10 years Straight-line or the diminishing balance method (using the Sum of the Years Digits) Core deposit intangibles 9 years Straight-line Critical accounting assumptions and estimates Judgement is required in determining the fair value of assets and liabilities acquired in a business combination. A different assessment of fair values would have resulted in a different goodwill balance and different post-acquisition performance of the acquired entity. When assessing impairment of intangible assets, significant judgement is needed to determine the appropriate cash flows and discount rates to be applied to the calculations. The significant assumptions applied to the value-in-use calculations are outlined below. Consolidated Parent Entity $m 2019 2018 2019 2018 Goodwill Opening balance 8,890 9,012 6,844 6,844 Disposals 1 — (15) — — Impairment 1 — (105) — — Other adjustments 5 (2) — — Closing balance 8,895 8,890 6,844 6,844 Computer software Opening balance 2,177 1,916 2,014 1,758 Additions 906 882 846 823 Impairment (25) (2) (25) (2) Amortisation (694) (618) (628) (565) Other adjustments 1 (1) — — Closing balance 2,365 2,177 2,207 2,014 Cost 6,395 5,727 5,464 4,861 Accumulated amortisation and impairment (4,030) (3,550) (3,257) (2,847) Carrying amount 2,365 2,177 2,207 2,014 Brand Names Opening balance 670 670 636 636 Closing balance 670 670 636 636 Carrying amount 670 670 636 636 Core deposit intangibles Opening balance — 21 — 21 Amortisation — (21) — (21) Closing balance — — — — Cost — 1,494 — 1,279 Accumulated amortisation — (1,494) — (1,279) Carrying amount — — — — Other intangible assets Opening balance 26 33 — — Additions through business combination — — — — Amortisation (3) (7) — — Closing balance 23 26 — — Cost 144 391 — 160 Accumulated amortisation and impairment (121) (365) — (160) Carrying amount 23 26 — — Total intangible assets 11,953 11,763 9,687 9,494 1. The sale of Hastings’ overseas operations and subsequent exit of Hastings’ Australian operations resulted in the entire balance of goodwill previously allocated to Hastings being derecognised ($15m) or impaired ($105m) in 2018. Goodwill has been allocated to the following CGUs 1 : Consolidated Parent Entity $m Consumer 4,060 3,359 3,144 3,144 Business 3,860 2,513 3,213 2,378 Westpac Institutional Bank 487 487 487 487 BT Financial Group (Australia) — 2,048 — 835 New Zealand 488 483 — — Total goodwill 8,895 8,890 6,844 6,844 1. In 2019, BT Financial Group (Australia)’s goodwill has been reallocated to Consumer and Business as a result of the restructure of its operations. Refer to Note 2 for further details of the restructure. Significant assumptions used in recoverable amount calculations Assumptions are used to determine the CGUs’ recoverable amount for goodwill, which is based on value-in-use calculations. Value-in-use refers to the present value of expected cash flows under its current use. The Group discounts the projected cash flows by its adjusted pre-tax equity rate. · Group’s equity rate was 11.0% (2018: 11.0%). · Group’s adjusted pre-tax equity rate for: - Australia was 15.7% (2018: 15.7%); and - New Zealand was 15.3% (2018: 15.3%). For the purpose of goodwill impairment testing, the assumptions in the following table are made for each significant CGU. The forecasts applied by management are not reliant on any one particular assumption. Assumption Based on: Cash flows Zero growth rate beyond 2 year forecast Economic market conditions Current market expectations Business performance Observable historical information and current market expectations of the future There are no reasonably possible changes in assumptions for any significant CGU that would result in an indication of impairment or have a material impact on the Group’s reported results.

Operating lease commitments

Operating lease commitments	12 Months Ended
	Sep. 30, 2019
Operating lease commitments
Operating lease commitments	Note 26. Operating lease commitments Westpac leases various commercial and retail premises and related property and equipment. The lease commitments at 30 September 2018 and 30 September 2019 are as follows: Consolidated Parent Entity $m Due within one year 608 570 555 498 Due after one year but not later than five years 1,716 1,564 1,583 1,356 Due after 5 years 1,421 1,819 1,305 1,460 Total lease commitments 3,745 3,953 3,443 3,314 Operating leases are entered into to meet the business needs of entities in the Group. Lease rentals are determined in accordance with market conditions when leases are entered into or on rental review dates. Leased premises that have become excess to the Group’s business needs have been sublet where possible. The future minimum lease payments receivable from non-cancellable sub-leases were $7 million (2018: $7 million) for the Group and $7 million (2018: $6 million) for Parent Entity.

Provisions, contingent liabilit

Provisions, contingent liabilities, contingent assets and credit commitments	12 Months Ended
	Sep. 30, 2019
Provisions, contingent liabilities, contingent assets and credit commitments
Provisions, contingent liabilities, contingent assets and credit commitments	Note 27. Provisions, contingent liabilities, contingent assets and credit commitments Accounting policy Provisions Provisions are recognised for present obligations arising from past events where a payment (or other economic transfer) is likely to be necessary to settle the obligation and can be reliably estimated. Employee benefits – long service leave provision Long service leave must be granted to employees in Australia and New Zealand. The provision is calculated based on the expected payments. When payments are expected to be more than one year in the future, the payments factor in expected employee service periods and average salary increases which are then discounted. Employee benefits – annual leave and other employee benefits provision The provision for annual leave and other employee benefits (including wages and salaries, inclusive of non-monetary benefits, and any associated on-costs (e.g. payroll tax)) is calculated based on expected payments. Provision for impairment on credit commitments The Group is committed to provide facilities and guarantees as explained below. If it is probable that a facility will be drawn and the resulting asset will be less than the drawn amount then a provision for impairment is recognised. The provision for impairment is calculated using the same methodology as the provision for expected credit losses (refer to Note 13). Compliance, Regulation and Remediation provisions The compliance, regulation and remediation provisions relate to matters of potential misconduct in providing services to our customers identified both as a result of regulatory action and internal reviews. An assessment of the likely cost to the Group of these matters (including applicable customer refunds) is made on a case-by-case basis and specific provisions are made where appropriate. Contingent liabilities Contingent liabilities are possible obligations whose existence will be confirmed only by uncertain future events, and present obligations where the transfer of economic resources is not probable or cannot be reliably measured. Contingent liabilities are not recognised on the balance sheet but are disclosed unless the outflow of economic resources is remote. Undrawn credit commitments The Group enters into various arrangements with customers which are only recognised in the balance sheet when called upon. These arrangements include commitments to extend credit, bill endorsements, financial guarantees, standby letters of credit and underwriting facilities. Contingent assets Contingent assets are possible assets whose existence will be confirmed only by uncertain future events. Contingent assets are not recognised on the balance sheet but are disclosed if an inflow of economic benefits is probable. Critical accounting assumptions and estimates The financial reporting of provisions for litigation and non-lending losses and for compliance, regulation and remediation matters involves a significant degree of judgement in relation to identifying whether a present obligation exists and also in estimating the probability, timing, nature and quantum of the outflows that may arise from past events. These judgements are made based on the specific facts and circumstances relating to individual events. Specific judgements in respect of material items are included in the discussion below. Provisions carried for long service leave are supported by an independent actuarial report. Provisions Annual leave and Litigation Provisions for Compliance, Long other and non- impairment regulation and service employee lending on credit Leasehold Restructuring remediation $m leave benefits losses commitments 1 Premises provisions provisions Total Consolidated Balance at 30 September 2018 417 699 53 239 24 27 469 1,928 Impact on adoption of AASB 9 — — — 98 — — — 98 Restated opening balance 417 699 53 337 24 27 469 2,026 Additions 90 866 66 — 7 259 1,489 2,777 Utilisation (51) (931) (81) — (7) (125) (324) (1,519) Reversal of unutilised provisions — (20) — (32) — (1) (61) (114) Other — — — — — — (1) (1) Balance at 30 September 2019 456 614 38 305 24 160 1,572 3,169 Parent Entity Balance at 30 September 2018 386 639 37 206 24 27 447 1,766 Impact on adoption of AASB 9 — — — 95 — — — 95 Restated opening balance 386 639 37 301 24 27 447 1,861 Additions 90 813 53 — 7 259 1,436 2,658 Utilisation (48) (876) (67) — (7) (125) (313) (1,436) Reversal of unutilised provisions — (19) — (26) — (1) (57) (103) Balance at 30 September 2019 428 557 23 275 24 160 1,513 2,980 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. Legislative liabilities The Group had the following assessed liabilities as at 30 September 2019: ▪ $22 million (2018: $20 million) based on an actuarial assessment as a self-insurer under the Workers’ Compensation Act 1987 and the Workplace Injury Management and Workers’ Compensation Act 1998 (New South Wales); ▪ $7 million (2018: $9 million) based on actuarial assessment as a self-insurer under the Accident Compensation Act 1985 (Victoria); ▪ $6 million (2018: $5 million) based on actuarial assessment as a self-insurer under the Workers’ Rehabilitation and Compensation Act 1986 (South Australia); ▪ $1 million (2018: $2 million) based on an actuarial assessment as a self-insurer under the Workers’ Compensation and Rehabilitation Act 2003 (Queensland); ▪ $Nil (2018: $1 million) based on an actuarial assessment as a self-insurer under the Workers’ Compensation Act 1951 (Australian Capital Territory); ▪ $1 million (2018: $2 million) based on an actuarial assessment as a self-insurer under the Workers’ Compensation and Injury Management Act 1981 (Western Australia); and ▪ $1 million (2018: $1 million) based on an actuarial assessment as a self-insurer under the Workers’ Rehabilitation and Compensation Act 1988 (Tasmania). Adequate provision has been made for these liabilities in the provision for annual leave and other employee benefits above. Compliance, regulation and remediation provisions Provisions in respect of compliance, regulation and remediation at 30 September 2019 include: ▪ customer refunds associated with certain ongoing advice service fees charged by the Group's salaried financial planners; ▪ customer refunds associated with certain ongoing advice service fees charged by authorised representatives of the Group's wholly owned subsidiaries, Securitor Financial Group Limited (Securitor) and Magnitude Group Pty Ltd (Magnitude); ▪ refunds for certain consumer and business customers that had interest only loans that did not automatically switch, when required, to principal and interest loans; and ▪ refunds to certain business customers who were provided with business loans where they should have been provided with loans covered by the National Consumer Credit Protection Act. The provisions for certain ongoing advice service fees charged by the Group's salaried financial planners and by authorised representatives of Securitor and Magnitude require significant judgement and are summarised as follows: Customer refunds associated with certain ongoing advice service fees charged by the Group's salaried financial planners Westpac has raised a provision for customer refunds associated with certain ongoing advice service fees charged by the Group's salaried financial planners during the period 2008 to 2018, including instances where records of financial advice are insufficient. A number of estimates have been used and judgements have been applied in determining the provision of $276 million as at 30 September 2019. These include: ▪ Total fees received by the Group in respect of salaried financial planners in the period 2008 to 2018 were approximately $594 million; ▪ The proportion of total fees that are estimated to be refunded is 26%. The key assumption in this estimate relates to the nature and extent of records to evidence that services were provided; and ▪ The time value of money including the forecast timing over which payments are likely to be made. The provision also includes estimated costs associated with running the remediation program. Ongoing advice service fees charged by authorised representatives of Securitor and Magnitude The Group has estimated customer remediation costs (including interest on refunded fees and additional costs to implement the remediation program) where customers of authorised representatives of the Group's wholly owned subsidiaries Securitor and Magnitude paid ongoing advice service fees to those representatives and where it is not clear that the services were provided. The ongoing advice service fees were charged during the period from 2008 to 2018. There are challenges involved in determining the extent of the services provided by authorised representatives who are no longer operating under the Magnitude and Securitor licences because, amongst other things, many of the former authorised representatives' files have been difficult to access particularly where authorised representatives have ceased operating under the Group’s licences or have left the industry. As a result, we have conducted sample based reviews in order to develop an estimate of fees that may need to be refunded. The insights from these reviews have informed a number of the estimates that have been used and the judgements which have been applied in estimating the provision of $606 million at 30 September 2019. They include: ▪ Total fees received by authorised representatives from their customers in the period 2008 to 2018 were approximately $936 million; and ▪ The proportion of fees that are estimated to be refundable under the current proposed remediation methodology is 32%. The key assumptions in this estimate include: - The basis for refunding customers of the authorised representatives; and - The nature, extent and availability of records to evidence that service was provided; and ▪ The time value of money including the forecast timing over which payments are likely to be made. The provision also includes estimated costs associated with running the remediation program. The provision is necessarily based on a number of assumptions and incomplete information. Westpac is also yet to finalise its remediation approach which may change following industry and regulator discussions. It is possible that the final outcome could be below or above the provision, if the actual outcome differs to the assumptions used in estimating the provision. Remediation processes may change over time as further facts emerge and such changes could result in a change to the final exposure. Restructuring provisions The Group holds restructuring provisions in relation to management changes to the scope or manner of certain business activities. During the year, the Group raised a restructuring provision in relation to the reset of its wealth strategy which was announced on 19 March 2019. This resulted in a number of changes to its wealth business. Key changes that have been made include: ▪ The realigning of the major BT businesses into expanded Consumer and Business divisions; ▪ Exiting of the provision of personal financial advice by Westpac Group salaried financial planners and authorised representatives; ▪ Moved to a referral model for financial advice by utilising a panel of advisers or adviser firms; and ▪ Sold part of the businesses to Viridian Advisory. This enabled many BT Financial Advice ongoing advice customers to transfer to Viridian Advisory. A number of the Group’s salaried financial advisers and support staff transitioned to Viridian from the completion date of 1 July 2019. Some authorised representatives also moved to Viridian prior to 30 September 2019. Other provisions The Group also holds certain provisions relating to previously claimed research and development tax incentives. Contingent liabilities Contingent liabilities are possible obligations whose existence will be confirmed only by uncertain future events and present obligations where the transfer of economic resources is not probable or cannot be reliably measured. Contingent liabilities are not recognised on the balance sheet but are disclosed unless the outflow of economic resource is remote. Regulatory actions Regulators and other bodies routinely conduct investigations and reviews involving the financial services sector, both in Australia and overseas. These investigations and reviews may consider a range of subject matters, and in Australia, a number of investigations and reviews have recently considered, and continue to consider, potential misconduct in credit and financial services. Domestic regulators such as ASIC, APRA, ACCC, AUSTRAC, the OAIC and the ATO, as well as certain international regulators such as the Reserve Bank of New Zealand, Financial Markets Authority in New Zealand, Hong Kong Monetary Authority, Monetary Authority of Singapore and National Futures Association in the U.S. are also currently conducting investigations and reviews and inquiries (some of which are industry-wide) that involve or may involve the Group in the future. These investigations and reviews are separately considering a range of matters, including matters such as ongoing advice services fees, responsible lending, residential mortgages, credit portfolio management, consumer credit insurance, privacy and information governance, the provision of financial advice, competition law conduct, anti-money laundering and counter-terrorism financing processes and procedures, and financial markets conduct. Westpac has also received various notices and requests for information from regulators as part of both industry-wide and Westpac-specific investigations and reviews and inquiries. These investigations and reviews and inquiries, which may be conducted by a regulator, and in some cases also an external third party retained either by the regulator or by the Group (including where a matter has been self-identified by the Group), may result in litigation (including class action proceedings against the Group), fines, imposition of additional capital, civil or criminal penalties, revocation, suspension or variation of conditions of relevant regulatory licences or other enforcement or administrative action being taken by regulators or other parties. An assessment of the likely cost to the Group of these investigations and reviews and actions has been made on a case-by-case basis for the purpose of the financial statements but cannot always be reliably estimated. One regulatory action currently being conducted relates to International Funds Transfer Instructions (IFTIs) required to be reported under Australia's AML/CTF Act. Under the Act, the 'sender' financial institution of an IFTI transmitted out of Australia, or the 'recipient' financial institution of an IFTI transmitted into Australia, is required to report the IFTI to AUSTRAC within 10 business days of the instruction being sent or received. As reported in the Group's 2018 Annual Report, the Group self-reported to AUSTRAC a failure to report a large number of IFTIs. The majority of the IFTIs which are the subject of the Group's engagement with AUSTRAC, concern batch instructions received by Westpac through one WIB product between 2009 and 2018 from a small number of correspondent banks for payments made predominantly to beneficiaries living in Australia in Australian dollars, on behalf of clients of those correspondent banks. The majority of the payments were low value, recurring and made by foreign government pension funds and corporates. AUSTRAC has issued a number of detailed statutory notices over the last year requiring information relating to the Group's processes, procedures and oversight. These notices relate to a range of matters including these IFTI reporting failures and associated potential failings related to record keeping and obligations to obtain and pass on certain data in funds transfer instructions, as well as correspondent banking due diligence, risk assessments and transaction monitoring. Westpac has not yet received an indication from AUSTRAC about the nature of any enforcement action it may take. The Group is continuing to work with AUSTRAC in relation to these matters. Any enforcement action against Westpac may include civil penalty proceedings and result in the payment of a significant financial penalty, which Westpac is currently unable to reliably estimate. Previous enforcement action by AUSTRAC against other institutions has resulted in a range of outcomes, depending on the nature and severity of the relevant conduct and its consequences. As AUSTRAC is still investigating these issues, any penalty cannot be reliably estimated and accordingly no provision has been raised for this matter. Litigation There are ongoing court proceedings, claims and possible claims for and against the Group. Contingent liabilities exist in respect of actual and potential claims and proceedings, including those listed below. An assessment of the Group's likely loss has been made on a case-by-case basis for the purpose of the financial statements but cannot always be reliably estimated, including in relation to those listed below. ▪ On 1 March 2017, ASIC commenced litigation in relation to certain Westpac home loans (including certain interest only loans) alleging contraventions of the National Consumer Credit Protection Act 2009 (Cth). The proceedings were heard in May 2019. On 13 August 2019, the Court handed down its judgment in the proceedings, and dismissed ASIC's case. On 10 September 2019, ASIC filed an appeal in relation to the decision. No provision has been recognised in relation to this matter. ▪ On 22 December 2016, ASIC commenced Federal Court proceedings against BT Funds Management Limited (BTFM) and Westpac Securities Administration Limited (WSAL) in relation to a number of superannuation account consolidation campaigns conducted between 2013 and 2016. ASIC has alleged that in the course of some of these campaigns, customers were provided with personal advice in contravention of a number of Corporations Act 2001 (Cth) provisions, and selected 15 specific customers as the focus of their claim. In December 2018 the primary Court handed down a judgment in which it held that no personal advice had been provided and that BTFM and WSAL did not contravene the relevant personal advice provisions although it did make a finding that BTFM and WSAL had each contravened section 912A(1)(a) of the Corporations Act. In February 2019, ASIC filed an appeal against this decision. On 28 October 2019, the Full Federal Court handed down its decision in ASIC’s favour and made findings that BTFM and WSAL each provided personal advice on the relevant calls. Once formal declarations of contravention are made, the matter will be remitted for penalty. No provision has been recognised in relation to this matter. ▪ In August 2016, a class action was filed in the United States District Court for the Southern District of New York against Westpac and a large number of Australian and international banks alleging misconduct in relation to the bank bill swap reference rate. On 26 November 2018, the US Court delivered its judgment on the Motion to Dismiss the US BBSW class action proceedings, with the case against Westpac and certain other foreign banks being dismissed on the basis that the Court does not have jurisdiction to hear the case. In April 2019, the Plaintiffs filed an amended claim, which brings Westpac back into the proceedings. Westpac is continuing to defend the proceedings with a Motion to Dismiss filed in May 2019. No provision has been recognised in relation to this matter. ▪ On 12 October 2017, a class action against Westpac and Westpac Life Insurance Services Limited (WLIS) was filed in the Federal Court of Australia. The class action was filed on behalf of customers who, since February 2011, obtained insurance issued by WLIS on the recommendation of certain financial advisers employed within the Westpac Group. The plaintiffs have alleged that aspects of the financial advice provided by those advisers breached fiduciary and statutory duties owed to the advisers' clients, including the duty to act in the best interests of the client, and that WLIS was knowingly involved in those alleged breaches. Westpac and WLIS are defending the proceedings. These proceedings are currently stayed by order of the Court, pending the outcome of an appeal concerning a procedural issue unrelated to the substantive claims made in the class action. No provision has been recognised in relation to this matter. ▪ On 21 February 2019, a class action against Westpac was filed in the Federal Court of Australia. As directed by the Court, the Plaintiffs filed a Statement of Claim on 22 May 2019 and an amended statement of claim on 18 October 2019. The claims allege that Westpac did not comply with its responsible lending obligations and entered into certain home loans that it should otherwise have assessed as unsuitable. The allegations include that during the period from 1 January 2011 to 17 February 2018, Westpac failed to: conduct reasonable inquiries about the customers' financial situation, requirements and objectives; verify customer's financial situation; conduct assessments of suitability; and act efficiently and fairly. Westpac is defending the proceedings. No provision has been recognised in relation to this matter. ▪ On 5 September 2019, a class action against BT Funds Management Limited (BTFM) and WLIS was commenced in relation to aspects of BTFM's BT Super for Life cash investment option. The claim follows other industry class actions as part of Slater and Gordon's 'Get your super back' campaign. It is alleged in the proceedings that BTFM failed to adhere to a number of obligations under the general law, the relevant trust deed and the Superannuation Industry (Supervision) Act 1993 (Cth), and that WLIS was knowingly concerned with BTFM's alleged contraventions. The damages sought by the claim are unspecified. BTFM and WLIS are defending the proceedings. No provision has been recognised in relation to this matter. Internal reviews and remediation Westpac is currently undertaking a number of reviews to identify and resolve prior issues that have the potential to impact our customers and reputation. These internal reviews have identified, and may continue to identify, issues in respect of which we are, or will be, taking steps to put things right (including in relation to areas of industry focus such as compliance with responsible lending obligations and the way some product terms and conditions are operationalised) so that our customers are not at a disadvantage from certain past practices. By undertaking these reviews we can also improve our processes and controls. An assessment of the Group's likely loss has been made on a case-by-case basis for the purpose of the financial statements but cannot always be reliably estimated. Contingent liabilities may exist in respect of actual or potential claims, compensation payments and/or refunds identified as part of these reviews. Australian Financial Complaints Authority Contingent liabilities may also exist in relation to customer complaints brought before the Australian Financial Complaints Authority (AFCA). AFCA has the power to make determinations about complaints and can award compensation up to certain thresholds. AFCA has a broader jurisdiction than previous dispute resolution bodies which it has replaced and, up until 30 June 2020, can also consider customer complaints dating back to 1 January 2008. Financial Claims Scheme Under the Financial Claims Scheme (FCS), the Australian Government provides depositors a free guarantee of deposits in eligible ADIs up to and including $250,000. The FCS applies to an eligible ADI if APRA has applied for the winding up of the ADI and the responsible Australian Government minister has declared that the FCS applies to the ADI. The Financial Claims Scheme (ADIs) Levy Act 2008 provides for the imposition of a levy to fund the excess of certain APRA FCS costs connected to an ADI, including payments by APRA to deposit holders in a failed ADI. The levy would be imposed on liabilities of eligible ADIs to their depositors and cannot be more than 0.5% of the amount of those liabilities. A contingent liability may exist in respect of any levy imposed under the FCS. Contingent tax risk Tax and regulatory authorities in Australia and in other jurisdictions are reviewing the taxation treatment of certain transactions (both historical and present-day transactions) undertaken by the Group in the course of normal business activities and the claiming of tax incentives and indirect taxes such as GST. The Group also responds to various notices and requests for information it receives from tax and regulatory authorities. These reviews, notices and requests may result in additional tax liabilities (including interest and penalties). The Group has assessed these and other taxation claims arising in Australia and elsewhere, including seeking independent advice. Settlement risk The Group is subject to a credit risk exposure in the event that another counterparty fails to settle for its payments clearing activities (including foreign exchange). The Group seeks to minimise credit risk arising from settlement risk in the payments system by aligning our processing method with the legal certainty of settlement in the relevant clearing mechanism. Parent Entity guarantees and undertakings The Parent Entity makes the following guarantees and undertakings to subsidiaries: ▪ letters of comfort for certain subsidiaries which recognise that Westpac has a responsibility that those subsidiaries continue to meet their obligations; and ▪ guarantees to certain wholly owned subsidiaries which are Australian financial services or credit licensees to comply with legislative requirements. Each guarantee is capped at $40 million per year and can only be utilised if the entity concerned becomes legally obliged to pay for a claim under the relevant licence. The Parent Entity has a right to recover any funds payable under the guarantees from the relevant subsidiary. Undrawn credit commitments The Group enters into various arrangements with customers which are only recognised in the balance sheet when called upon. These arrangements include commitments to extend credit, bill endorsements, financial guarantees, standby letters of credit and underwriting facilities. They expose the Group to liquidity risk when called upon and also to credit risk if the customer fails to repay the amounts owed at the due date. The maximum exposure to credit loss is the contractual or notional amount of the instruments. Some of the arrangements can be cancelled by the Group at any time and a significant portion is expected to expire without being drawn. The actual required liquidity and credit risk exposure is therefore less than the amounts disclosed. The Group uses the same credit policies when entering into these arrangements as it does for on-balance sheet instruments. Refer to Note 21 for further details of liquidity risk and credit risk management. Undrawn credit commitments excluding derivatives are as follows: Consolidated Parent Entity $m Undrawn credit commitments Letters of credit and guarantees 1 15,150 15,585 14,583 14,957 Commitments to extend credit 2 176,002 174,658 153,716 152,943 Other 188 154 188 99 Total undrawn credit commitments 191,340 190,397 168,487 167,999 1. Standby letters of credit are undertakings to pay, against presentation documents, an obligation in the event of a default by a customer. Guarantees are unconditional undertakings given to support the obligations of a customer to third parties. The Group may hold cash as collateral for certain guarantees issued. 2. Commitments to extend credit include all obligations on the part of the Group to provide credit facilities. As facilities may expire without being drawn upon, the notional amounts do not necessarily reflect future cash requirements. In addition to the commitments disclosed above, at 30 September 2019 the Group had offered $5.0 billion (2018: $5.7 billion) of facilities to customers, which had not yet been accepted. Consolidated 2019 Up to Over 1 Over 3 Over $m 1 Year to 3 Years to 5 Years 5 Years Total Letters of credit and guarantees 7,334 4,639 719 2,458 15,150 Commitments to extend credit 41,488 58,402 12,917 63,195 176,002 Other 125 — — 63 188 Total undrawn credit commitments 48,947 63,041 13,636 65,716 191,340 Contingent assets The credit commitments shown in the table above also constitute contingent assets. These commitments would be classified as loans in the balance sheet on the contingent event occurring.

Shareholders' equity

Shareholders' equity	12 Months Ended
	Sep. 30, 2019
Shareholders' equity
Shareholders' equity	Note 28. Shareholders’ equity Accounting policy Share capital Ordinary shares are recognised at the amount paid up per ordinary share net of directly attributable issue costs. Treasury shares are shares in the Parent Entity, purchased by the Parent Entity or other entities within the Group. These shares are adjusted against share capital as the net of the consideration paid to purchase the shares and, where applicable, any consideration received from the subsequent sale or reissue of these shares. Non-controlling interests Non-controlling interests represent the share in the net assets of subsidiaries attributable to equity interests that are not owned directly or indirectly by the Parent Entity. Reserves Foreign currency translation reserve Exchange differences arising on translation of the Group’s foreign operations, and any offsetting gains or losses on hedging the net investment are reflected in the foreign currency translation reserve. A cumulative credit balance in this reserve would not normally be regarded as being available for payment of dividends until such gains are realised and recognised in the income statement on sale or disposal of the foreign operation. Debt securities at FVOCI reserve (30 September 2019 - AASB 9) This reserve was established on adoption of AASB 9 and comprises the changes in fair value of debt securities measured at fair value through other comprehensive income (except for interest income, impairment charges and foreign exchange gains and losses which are recognised in the income statement), net of any related hedge accounting adjustments and tax. These changes are transferred to non-interest income in the income statement when the asset is disposed. Equity securities at FVOCI reserve (30 September 2019 - AASB 9) This reserve was established on adoption of AASB 9 and comprises the changes in fair value of equity securities measured at fair value through other comprehensive income, net of tax. These changes are not transferred to the income statement when the asset is disposed. Available-for-sale securities reserve (30 September 2018 - AASB 139) This comprises the changes in the fair value of available-for-sale financial securities (including both debt and equity securities), net of any related hedge accounting adjustments and tax. These changes were transferred to non-interest income in the income statement when the asset is either disposed of or impaired. This reserve was closed on the adoption of AASB 9 and the closing balance was allocated to the debt securities at FVOCI reserve and equity securities at FVOCI reserve noted above for the relevant securities. Cash flow hedge reserve This comprises the fair value gains and losses associated with the effective portion of designated cash flow hedging instruments, net of tax. Share-based payment reserve This comprises the fair value of equity-settled share-based payments recognised as an expense. Other reserves Other reserves for the Parent Entity relates to certain historic internal group restructurings performed at fair value. The reserve is eliminated on consolidation. Other reserves for the Group consist of transactions relating to changes in the Parent Entity’s ownership of a subsidiary that do not result in a loss of control. The amount recorded in other reserves reflects the difference between the amount by which non-controlling interests are adjusted and the fair value of any consideration paid or received. Consolidated Parent Entity $m Share capital Ordinary share capital, fully paid 37,508 36,054 37,508 36,054 Treasury shares held for RSP 1 (572) (505) (572) (505) Other treasury shares held 2 19 12 (3) (3) Total treasury shares held (553) (493) (575) (508) Total share capital 36,955 35,561 36,933 35,546 Non-controlling interests 53 52 — — 1. 2019: 4,784,213 unvested shares held (2018: 3,943,660). 2. 2019: 1,721,532 shares held (2018: 2,029,795). Ordinary shares Westpac does not have authorised capital and the ordinary shares have no par value. Ordinary shares entitle the holder to participate in dividends and, in the event of Westpac winding up, to a share of the proceeds in proportion to the number of and amounts paid on the shares held. Each ordinary share entitles the holder to one vote, either in person or by proxy, at a shareholder meeting. Reconciliation of movement in number of ordinary shares. Consolidated and Parent Entity (number) Opening balance 3,434,796,711 3,394,364,279 Dividend reinvestment plan 3 55,132,062 21,242,667 Conversion of Westpac Convertible Preference Shares 4 — 19,189,765 Closing balance 3,489,928,773 3,434,796,711 3. The price per share for the issuance of shares in relation to the dividend reinvestment plan for the 2019 interim dividend was $27.36 and 2018 final dividend was $25.82 (2018: 2018 interim dividend was $28.11 and 2017 final dividend was $31.62). 4. The conversion price per share for the issuance of shares in relation to the conversion of Westpac Convertible Preference Shares was $29.49. Ordinary shares purchased and sold on market Consolidated and Parent Entity Number Average Price ($) For share-based payment arrangements: Employee share plan (ESP) 1,061,442 25.27 RSP 5 2,707,931 25.55 Westpac Performance Plan (WPP) - share rights exercised 184,043 26.73 Westpac Long Term Variable Reward Plan (LTVR) - options exercised 6 37,831 27.68 As treasury shares: Treasury shares sold (308,263) 26.19 Net number of ordinary shares purchased/(sold) on market 3,682,984 For details of the share-based payment arrangements refer to Note 33. 5. Ordinary shares allocated to employees under the RSP are classified as treasury shares until the shares vest. 6. The average exercise price per share received was $23.40 on the exercise of the LTVR options. Reconciliation of movement in reserves 1 Consolidated Parent Entity $m Available-for-sale securities reserve Opening balance 37 64 24 70 Impact on adoption of AASB 9 (37) — (24) — Net gains/(losses) from changes in fair value — (104) — (34) Income tax effect — 34 — 13 Transferred to income statements — 66 — (33) Income tax effect — (25) — 6 Exchange differences — 2 — 2 Closing balance — 37 — 24 Debt securities at FVOCI reserve Opening balance — — — — Impact on adoption of AASB 9 33 — 25 — Net gains/(losses) from changes in fair value (47) — (40) — Income tax effect 12 — 10 — Transferred to income statements (29) — (29) — Income tax effect 8 — 8 — Exchange differences 1 — 1 — Closing balance (22) — (25) — Equity securities at FVOCI reserve Opening balance — — — — Impact on adoption of AASB 9 6 — 1 — Net gains/(losses) from changes in fair value 11 — (2) — Closing balance 17 — (1) — Share-based payment reserve Opening balance 1,534 1,431 1,425 1,322 Share-based payment expense 108 103 108 103 Closing balance 1,642 1,534 1,533 1,425 Cash flow hedge reserve Opening balance (125) (154) (69) (94) Net gains/(losses) from changes in fair value (203) (161) (121) (125) Income tax effect 60 47 36 38 Transferred to income statements 197 203 128 160 Income tax effect (58) (60) (39) (48) Closing balance (129) (125) (65) (69) Foreign currency translation reserve Opening balance (351) (529) (307) (481) Exchange differences on translation of foreign operations 311 164 214 175 Gains/(losses) on net investment hedges (129) 17 (52) (1) Transferred to income statements (10) (3) — — Closing balance (179) (351) (145) (307) Other reserves Opening balance (18) (18) 41 41 Transactions with owners — — — — Closing balance (18) (18) 41 41 Total reserves 1,311 1,077 1,338 1,114 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail.

Capital adequacy

Capital adequacy	12 Months Ended
	Sep. 30, 2019
Capital adequacy
Capital adequacy	Note 29. Capital adequacy APRA measures an ADI’s regulatory capital using three measures: Level of capital Definition Common Equity Tier 1 Capital (CET1) Comprises the highest quality components of capital that consists of paid-up share capital, retained profits and certain reserves, less certain intangible assets, capitalised expenses and software, and investments and retained profits in insurance and funds management subsidiaries that are not consolidated for capital adequacy purposes. Tier 1 Capital The sum of CET1 and AT1 Capital. AT1 Capital comprises high quality components of capital that consist of certain securities not included in CET1, but which include loss absorbing characteristics. Total Regulatory Capital The sum of Tier 1 Capital and Tier 2 Capital. Tier 2 Capital includes subordinated instruments and other components of capital that, to varying degrees, do not meet the criteria for Tier 1 Capital, but nonetheless contribute to the overall strength of an ADI and its capacity to absorb losses. Under APRA’s Prudential Standards, Australian ADIs, including Westpac, are required to maintain a minimum CET1 ratio of at least 4.5%, Tier 1 Capital ratio of at least 6.0% and Total Regulatory Capital ratio of at least 8.0%. APRA may also require ADIs, including, Westpac, to meet Prudential Capital Requirements (PCRs) above the minimum capital ratios. APRA does not allow the PCRs for individual ADIs to be disclosed. APRA also requires ADIs to hold additional CET1 buffers comprising of: ▪ a capital conservation buffer (CCB) of 3.5% for ADIs designated by APRA as domestic systemically important banks (D-SIBs) unless otherwise determined by APRA, which includes a 1.0% surcharge for D-SIBs. APRA has determined that Westpac is a D-SIB; and ▪ a countercyclical capital buffer. The countercyclical buffer is set on a jurisdictional basis and APRA is responsible for setting the requirement in Australia. The countercyclical buffer requirement is currently set to zero for Australia and New Zealand. Collectively, the above buffers are referred to as the “Capital Buffer” (CB). Should the CET1 capital ratio fall within the capital buffer range restrictions on the distributions of earnings will apply. This includes restrictions on the amount of earnings that can be distributed through dividends, AT1 Capital distributions and discretionary staff bonuses. Capital management strategy Westpac’s approach to capital management seeks to ensure that it is adequately capitalised as an ADI. Westpac evaluates its approach to capital management through the Internal Capital Adequacy Assessment Process (ICAAP), the key features of which include: ▪ the development of a capital management strategy, including consideration of regulatory minimums, capital buffers and contingency plans; ▪ consideration of both economic and regulatory capital requirements; ▪ a stress testing framework that challenges the capital measures, coverage and requirements including the impact of adverse economic scenarios; and ▪ consideration of the perspective of external stakeholders’, including rating agencies and equity and debt investors. In light of APRA’s ‘unquestionably strong’ capital benchmarks, Westpac will seek to operate with a CET1 capital ratio above 10.5% in March and September as measured under the existing capital framework. Additional buffers may also be held to reflect challenging or uncertain environments. This also takes into consideration: ▪ current regulatory capital minimums and the CCB, which together are the total CET1 requirement; ▪ stress testing to calibrate an appropriate buffer against a downturn; and ▪ quarterly volatility of capital ratios due to the half yearly cycle of ordinary dividend payments. Westpac will revise its target capital level once APRA finalises its review of the capital adequacy framework. Total regulatory capital developments On 9 July 2019 APRA announced that it will require the major banks (including Westpac) to lift Total Regulatory Capital by three percentage points of RWA by 1 January 2024 in order to boost loss absorbing capacity and support orderly resolution. APRA also confirmed that its overall long term target of an additional four to five percentage points of loss absorbing capacity remains unchanged, and that it will consider the most feasible alternative method of sourcing the remaining one to two percentage points, taking into account the particular characteristics of the Australian financial system. Further details of APRA's regulatory changes are set out in the Significant Developments section of the 2019 Annual Report.

Dividends

Dividends	12 Months Ended
	Sep. 30, 2019
Dividends
Dividends	Note 30. Dividends Consolidated Parent Entity $m Dividends not recognised at year end Since year end the Directors have proposed the following dividends: Final dividend 80 cents per share (2018: 94 cents, 2017: 94 cents) all fully franked at 30% 2,791 3,227 3,186 2,792 3,229 Total dividends not recognised at year end 2,791 3,227 3,186 2,792 3,229 Shareholders can choose to receive their dividends as cash or reinvest for an equivalent number of shares under the Dividend Reinvestment Plan (DRP). The Board has decided to issue new shares to satisfy the DRP for the 2019 final dividend. The DRP will not include a discount. Details of dividends recognised during the year are provided in the statement of changes in equity. Australian franking credits Australian franking credits available to the Parent Entity for subsequent years are $1,558 million (2018: $1,357 million; 2017: $1,063 million). This is calculated as the year end franking credit balance, adjusted for the Australian current tax liability and the proposed 2019 final dividend. New Zealand imputation credits New Zealand imputation credits of NZ$0.07 (2018: NZ$0.07, 2017: NZ$0.07) per share will be attached to the proposed 2019 final dividend. New Zealand imputation credits available to the Parent Entity for subsequent years are NZ$860 million (2018: NZ$530 million, 2017: NZ$375 million). This is calculated on the same basis as the Australian franking credits but using the New Zealand current tax liability.

Investments in subsidiaries and

Investments in subsidiaries and associates	12 Months Ended
	Sep. 30, 2019
Investments in subsidiaries and associates
Investments in subsidiaries and associates	GROUP STRUCTURE Note 31. Investments in subsidiaries and associates Accounting policy Subsidiaries Westpac’s subsidiaries are entities which it controls and consolidates as it is exposed to, or has rights to, variable returns from the entity, and can affect those returns through its power over the entity. When the Group ceases to control a subsidiary, any retained interest in the entity is remeasured to fair value, with any resulting gain or loss recognised in the income statement. Changes in the Group’s ownership interest in a subsidiary which do not result in a loss of control are accounted for as transactions with equity holders in their capacity as equity holders. In the Parent Entity’s financial statements, investments in subsidiaries are initially recorded at cost and are subsequently held at the lower of cost and recoverable amount. All transactions between Group entities are eliminated on consolidation. Associates Associates are entities in which the Group has significant influence, but not control, over the operating and financial policies. The Group accounts for associates using the equity method. The investments are initially recognised at cost (except where recognised at fair value due to a loss of control of a subsidiary), and increased (or decreased) each year by the Group’s share of the associate’s profit (or loss). Dividends received from the associate reduce the investment in associate. Overseas companies predominantly carry on business in the country of incorporation. For unincorporated entities, ‘Country of Incorporation’ refers to the country where business is carried on. The financial years of all controlled entities are the same as that of Westpac unless otherwise stated. From time to time, the Group consolidates a number of unit trusts where the Group has variable returns from its involvement with the trusts, and has the ability to affect those returns through its power over the trusts. These unit trusts are excluded from the table. The following table includes the principal controlled entities of the Group as at 30 September 2019. Country of Country of Name Incorporation Name Incorporation Advance Asset Management Limited Australia Westpac Financial Services Limited Australia Asgard Capital Management Limited Australia Westpac General Insurance Limited Australia Asgard Wealth Solutions Limited Australia Westpac General Insurance Services Limited Australia BT Financial Group Pty Limited Australia Westpac Lenders Mortgage Insurance Limited Australia BT Funds Management Limited Australia Westpac Life Insurance Services Limited Australia BT Portfolio Services Limited Australia Westpac Securitisation Holdings Pty Limited Australia Capital Finance Australia Limited Australia BT Funds Management (NZ) Limited New Zealand Crusade ABS Series 2017-1 Trust Australia Westpac Financial Services Group-NZ-Limited New Zealand Crusade ABS Series 2017-1P Trust Australia Westpac Life-NZ-Limited New Zealand Crusade Trust No.2P of 2008 Australia Westpac New Zealand Group Limited New Zealand Series 2008-1M WST Trust Australia Westpac New Zealand Limited New Zealand Series 2014-2 WST Trust Australia Westpac NZ Covered Bond Limited 1 New Zealand Series 2015-1 WST Trust Australia Westpac NZ Operations Limited New Zealand Series 2019-1 WST Trust Australia Westpac NZ Securitisation Limited 1 New Zealand St.George Finance Limited Australia Westpac Securities NZ Limited New Zealand Westpac Covered Bond Trust Australia Westpac Term Pie Fund 2 New Zealand Westpac Equity Holdings Pty Limited Australia Westpac Bank-PNG-Limited Papua New Guinea Westpac Financial Services Group Limited Australia 1. The Group indirectly owns 19% of Westpac NZ Covered Bond Limited (WNZCBL) and Westpac NZ Securitisation Limited (WNZSL), however, due to contractual and structural arrangements both WNZCBL and WNZSL are considered to be controlled entities within the Group. 2. The Group has funding agreements in place with this entity and is deemed to have exposure to the associated risks and rewards. The entity is consolidated as the Group is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. The following controlled entities have been granted relief from compliance with the balance date synchronisation provisions in the Corporations Act 2001: ▪ Westpac Cash PIE Fund; ▪ Westpac Notice Saver PIE Fund; and ▪ Westpac Term PIE Fund. The following material controlled entities are not wholly owned: Percentage Owned St.George Motor Finance Limited 75.0 % 75.0 % Westpac Bank-PNG-Limited 89.9 % 89.9 % Westpac NZ Covered Bond Limited 19.0 % 19.0 % Westpac NZ Securitisation Limited 19.0 % 19.0 % Non-controlling interests Details of the balance of non-controlling interests are set out in Note 28. There are no non-controlling interests that are material to the Group. Significant restrictions There were no significant restrictions on the ability to transfer cash or other assets, pay dividends or other capital distributions, provide or repay loans and advances between the entities within the Group subject to local regulatory requirements. There were also no significant restrictions on Westpac’s ability to access or use the assets and settle the liabilities of the Group resulting from protective rights of non-controlling interests. Associates There are no associates that are material to the Group. Changes in ownership of subsidiaries Businesses disposed during the year ending 30 September 2019 Westpac sold its interest in Ascalon Capital Managers (Asia) Limited and Ascalon Capital Managers Limited on 8 February 2019 for a combined profit of $3 million recognised in non-interest income. Businesses disposed during the year ending 30 September 2018 Westpac sold its interest in a number of Hastings offshore subsidiaries to Northill Capital. Completion of the sale of the US and UK entities occurred on 28 February 2018 and completion of the Singapore entity occurred on 23 March 2018, with a total loss of $9 million recognised in non-interest income. Businesses disposed during the year ending 30 September 2017 No businesses were sold in the year ended 30 September 2017. Details of the assets and liabilities which the Group ceased to control are provided in Note 37.

Structured entities

Structured entities	12 Months Ended
	Sep. 30, 2019
Structured entities
Structured entities	Note 32. Structured entities Accounting policy Structured entities are generally created to achieve a specific, defined objective and their operations are restricted such as only purchasing specific assets. Structured entities are commonly financed by debt or equity securities that are collateralised by and/or indexed to their underlying assets. The debt and equity securities issued by structured entities may include tranches with varying levels of subordination. Structured entities are classified as subsidiaries and consolidated if they meet the definition in Note 31. If the Group does not control a structured entity then it will not be consolidated. The Group engages in various transactions with both consolidated and unconsolidated structured entities that are mainly involved in securitisations, asset backed and other financing structures and managed funds. Consolidated structured entities Securitisation and covered bonds The Group uses structured entities to securitise its financial assets, including two covered bond programs, to assign pools of residential mortgages to bankruptcy remote structured entities. Refer to Note 24 for further details. Group managed funds The Group acts as the responsible entity and/or fund manager for various investment management funds. As fund manager, if the Group is deemed to be acting as a principal rather than an agent then it consolidates the fund. The principal versus agent decision requires judgement of whether the Group has sufficient exposure to variable returns. Non-contractual financial support The Group does not provide non-contractual financial support to these consolidated structured entities. Unconsolidated structured entities The Group has interests in various unconsolidated structured entities including debt or equity instruments, guarantees, liquidity and other credit support arrangements, lending, loan commitments, certain derivatives and investment management agreements. Interests exclude non-complex derivatives (e.g. interest rate or currency swaps), instruments that create, rather than absorb, variability in the entity (e.g. credit protection under a credit default swap), and lending to a structured entity with recourse to a wider operating entity, not just the structured entity. The Group’s main interests in unconsolidated structured entities, which arise in the normal course of business, are: Trading securities The Group actively trades interests in structured entities and normally has no other involvement with the structured entity. The Group earns interest income on these securities and also recognises fair value changes through trading income in non-interest income. Investment securities/ Available-for-sale securities The Group holds mortgage-backed securities for liquidity purposes and the Group normally has no other involvement with the structured entity. These assets are highly-rated, investment grade and eligible for repurchase agreements with the RBA or another central bank. The Group earns interest income and net gains or losses on selling these assets are recognised in the income statements. Loans and other credit commitments The Group lends to unconsolidated structured entities, subject to the Group’s collateral and credit approval processes, in order to earn interest and fee income. The structured entities are mainly property trusts, securitisation entities and those associated with project and property financing transactions. Investment management agreements The Group manages funds that provide customers with investment opportunities. The Group also manages superannuation funds for its employees. The Group earns management and performance fee income which is recognised in non-interest income. The Group may also retain units in these investment management funds, primarily through life insurance subsidiaries. The Group earns fund distribution income and recognises fair value movements through non-interest income. The following tables show the Group’s interests in unconsolidated structured entities and its maximum exposure to loss in relation to those interests. The maximum exposure does not take into account any collateral or hedges that will reduce the risk of loss. ▪ For on-balance sheet instruments, including debt and equity instruments in and loans to unconsolidated structured entities, the maximum exposure to loss is the carrying value; and ▪ For off-balance sheet instruments, including liquidity facilities, loan and other credit commitments and guarantees, the maximum exposure to loss is the notional amounts. Investment in third party mortgage and Interest other Financing to Group in other Consolidated 2019 asset-backed securitisation managed structured $m securities 2 vehicles funds entities Total Assets Trading securities and financial assets measured at FVIS 1,827 — — 282 2,109 Investment securities 6,940 — — — 6,940 Loans — 20,979 9 22,817 43,805 Life insurance assets — — 4,885 1,879 6,764 Other assets — — 54 — 54 Total on-balance sheet exposures 8,767 20,979 4,948 24,978 59,672 Total notional amounts of off-balance sheet exposures — 5,157 102 10,086 15,345 Maximum exposure to loss 8,767 26,136 5,050 35,064 75,017 Size of structured entities 3 66,015 26,136 71,538 98,983 262,672 Investment in third party mortgage and Interest other Financing to Group in other Consolidated 2018 asset-backed securitisation managed structured $m securities 2 vehicles funds entities Total Assets Trading securities and financial assets measured at FVIS 2,108 — — 139 2,247 Available-for-sale securities 7,352 — — — 7,352 Loans — 21,977 6 22,894 44,877 Life insurance assets — — 4,702 1,843 6,545 Other assets — — 47 — 47 Total on-balance sheet exposures 9,460 21,977 4,755 24,876 61,068 Total notional amounts of off-balance sheet exposures — 5,145 60 7,988 13,193 Maximum exposure to loss 9,460 27,122 4,815 32,864 74,261 Size of structured entities 3 58,976 27,122 66,524 100,427 253,049 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. The Group's interests in third party mortgage and other asset-backed securities are senior tranches of notes and are investment grade rated. 3. Represented either by the total assets or market capitalisation of the entity, or if not available, the Group's total committed exposure (for lending arrangements and external debt and equity holdings), funds under management (for Group managed funds) or the total value of notes on issue (for investments in third-party asset-backed securities). Non-contractual financial support The Group does not provide non-contractual financial support to these unconsolidated structured entities.

Share-based payments

Share-based payments	12 Months Ended
	Sep. 30, 2019
Share-based payments
Share-based payments	OTHER Note 33. Share-based payments Accounting policy The Group enters into various share-based payment arrangements with its employees as a component of overall compensation for services provided. Share-based payment arrangements comprise options to purchase shares at a pre-determined price (share options), rights to receive shares for free (share rights) and restricted shares (issued at no cost). Share-based payment arrangements typically require a specified period of continuing employment (the service period or vesting period) and may include performance targets (vesting conditions). Specific details of each arrangement are provided below. Share-based payments must be classified as either cash-settled or equity-settled arrangements. The Group’s significant arrangements are equity-settled, as the Group is not obliged to settle in cash. Options and share rights Options and share rights are equity-settled arrangements. The fair value is measured at grant date and is recognised as an expense over the service period, with a corresponding increase in the share-based payment reserve in equity. The fair value of share options and share rights is estimated at grant date using a binomial/Monte Carlo simulation pricing model which incorporates the vesting and market-related performance targets of the grants. The fair value of share options and rights excludes non-market vesting conditions such as employees’ continuing employment by the Group. The non-market vesting conditions are instead incorporated in estimating the number of share options and rights that are expected to vest and are therefore recognised as an expense. At each reporting date the non-market vesting assumptions are revised and the expense recognised each year takes into account the most recent estimates. The market-related assumptions are not revised each year as the fair value is not re-estimated after the grant date. Restricted share plan (RSP) The RSP is accounted for as an equity-settled arrangement. The fair value of shares allocated to employees for nil consideration is recognised as an expense over the vesting period with a corresponding increase in the share-based payments reserve in equity. The fair value of ordinary shares issued to satisfy the obligation to employees is measured at grant date and is recognised as a separate component of equity. Employee share plan (ESP) The value of shares expected to be allocated to employees for nil consideration is recognised as an expense over the financial year and provided for as other employee benefits. The fair value of any ordinary shares issued to satisfy the obligation to employees is recognised in equity. Alternatively, shares may be purchased on market to satisfy the obligation to employees. Scheme name Westpac Long Term Variable Reward Plan (LTVR) Westpac Performance Plan (WPP) Restricted Share Employee Share Plan Type of share-based payment Share rights (allocated at no cost). Share options (no longer issued since October 2009). Share rights (allocated at no cost). Share options (no longer issued since October 2009). Westpac ordinary shares (allocated at no cost). Westpac ordinary shares (allocated at no cost) of up to $1,000 per employee per year. How it is used Aligns executive remuneration and accountability with shareholder interests over the long term. Primarily used for mandatory deferral of a portion of short-term incentives for New Zealand employees and key employees based outside Australia. Primarily used to reward key employees. To reward eligible Australian employees (unless they have already been provided instruments under another scheme for the previous year). Exercise price: Shares rights Share options Nil The market price of Westpac shares at the start of the performance period Nil The market price of Westpac shares at the start of the performance period. n/a n/a n/a n/a Performance hurdles Relative Total Shareholder return (TSR) over a four year performance period and average cash Return on Equity (cash ROE) over a three year performance period plus one year holding lock, each applying to half of the award (commencing with the 2016 LTVR award) 1 . None None None Service conditions Continued employment throughout the vesting period or as determined by the Board. Continued employment throughout the vesting period or as determined by the Board. Continued employment throughout the restriction period or as determined by the Board. Shares must normally remain within the ESP for three years from granting unless the employee leaves Westpac. Vesting period (period over which expenses are recognised) 4 years 1 Defined period set out at time of grant. Defined period set out at time of grant. 1 year Treatment at end of term Lapse if not exercised. Lapse if not exercised. Vested shares are released from the RSP at the end of the vesting period. Shares granted prior to October 2009 may be held in the RSP for up to 10 years from the grant date. Shares are released at the end of the restriction period or when the employee leaves Westpac. Does the employee receive dividends and voting rights during the vesting period? No No Yes Yes 1. For the 2015 LTVR awards, the relative TSR is subject to a four year performance period and cash EPS compound annual growth rate (CAGR) over a three year performance period plus one year holding lock. For awards granted for the periods 2011 to 2014 both the relative TSR and cash EPS CAGR hurdles are subject to a three year performance and vesting period. Relative TSR hurdled awards granted prior to 2011 were measured over an initial three year performance period with subsequent performance testing possible at the fourth and fifth anniversaries however further vesting may only occur if the relative TSR ranking has improved. Each share-based payment scheme is quantified below: (i) Westpac Long Term Variable Reward Plan (LTVR) Outstanding at Granted Exercised Lapsed Outstanding 1 October during during during Outstanding at and exercisable at 2019 the year the year the year 30 September 2019 30 September 2019 Share options 52,350 — 37,831 14,519 — — Weighted average exercise price $ 23.40 — $ 23.40 — — — Weighted average remaining contractual life 0 years — Share rights 4,712,843 1,169,704 — 1,327,958 4,554,589 3,719 Weighted average remaining contractual life 10.9 years 12.3 years 2018 1 Oct 2017 30 Sept 2018 Share options 256,840 — 103,686 100,804 52,350 52,350 Weighted average exercise price $ 26.36 — $ 24.23 — $ 23.40 $ 23.40 Performance share rights 5,231,904 808,290 2,929 1,324,422 4,712,843 3,719 The weighted average fair value at grant date of LTVR share rights issued during the year was $15.62 (2018: $17.86). (ii) Westpac Performance Plan (WPP) Outstanding Outstanding at Granted during Exercised Lapsed during Outstanding at and exercisable at 2019 1 October 2018 the year during the year the year 30 September 2019 30 September 2019 Share rights One-year vesting period 140,531 145,296 82,287 5,652 197,888 59,413 Two-year vesting period 253,390 146,139 78,180 31,440 289,909 48,833 Three-year vesting period 117,739 20,169 23,576 19,083 95,249 22,700 Four-year vesting period 162,229 74,042 — 32,851 203,420 — Total share rights 673,889 385,646 184,043 89,026 786,466 130,946 Weighted average remaining contractual life 12.4 years 12.8 years 2018 1 Oct 2017 30 Sept 2018 Performance share rights 619,779 246,902 156,691 36,101 673,889 124,525 The weighted average fair value at grant date of WPP share rights issued during the year was $23.08 (2018: $27.83). (iii) Restricted Share Plan (RSP) Outstanding at Granted during Forfeited Outstanding at Allocation date 1 1 October 2018 the year Released during the year 30 September 2019 Granted prior to October 2009 346,732 — 346,732 — — Granted subsequent to October 2009 3,842,912 2,861,262 1,867,777 63,226 4,773,171 Total 2019 4,189,644 2,861,262 2,214,509 63,226 4,773,171 Total 2018 4,204,753 2,479,975 2,225,245 269,839 4,189,644 1. For awards made prior to October 2009, shares may be held in the RSP for up to 10 years from the date they are granted. For awards made from October 2009, shares are released from the RSP on vesting. The weighted average fair value at grant date of RSP shares issued during the year was $25.20 (2018: $31.29). (iv) Average number of shares Total Number Allocation Number of allocated per of shares Market Total date participants participant allocated price per share 2 fair value 2019 23 November 2018 27,245 39 1,062,555 $ 25.35 $ 26,935,769 2018 24 November 2017 27,557 31 854,267 $ 31.80 $ 27,165,691 2. The market price per share for the allocation is based on the five day volume-weighted average price up to the grant date. The 2018 ESP award was satisfied through the purchase of shares on market. The liability accrued for the ESP at 30 September 2019 is $26 million (2018: $28 million) and is provided for as other employee benefits. (v) CEO plans Details of share-based payment arrangements held by the CEO, Brian Hartzer, are on the same terms and conditions as described above for the relevant plan. (vi) Other plans Westpac also provides plans for small, specialised parts of the Group. The benefits under these plans are directly linked to growth and performance of the relevant part of the business. The plans individually and in aggregate are not material to the Group in terms of expenses and dilution of earnings. The names of all persons who hold share options and/or rights currently on issue are entered in Westpac’s register of option holders which may be inspected at Link Market Services, Level 12, 680 George Street, Sydney, New South Wales. (vii) Fair value assumptions The fair values of share options and share rights have been independently calculated at their respective grant dates. The fair value of share rights with performance targets based on relative TSR takes into account the average TSR outcome determined using a Monte Carlo simulation pricing model. The fair values of share rights without TSR based performance targets (i.e. share rights with cash EPS CAGR, economic profit and cash ROE performance targets) have been determined with reference to the share price at grant date and a discount rate reflecting the expected dividend yield over their vesting periods. Other significant assumptions include: ▪ a risk free rate of return of 2.1%, applied to TSR-hurdled grants; ▪ a dividend yield on Westpac shares of 7.5%, applied to TSR and ROE-hurdled grants; ▪ volatility in Westpac’s TSR of 20.3%, applied to TSR-hurdled grants; and ▪ volatilities of, and correlation factors between, TSR of the comparator group and Westpac for TSR-hurdled grants.

Superannuation commitments

Superannuation commitments	12 Months Ended
	Sep. 30, 2019
Superannuation commitments
Superannuation commitments	Note 34. Superannuation commitments Accounting policy The Group recognises an asset or a liability for its defined benefit schemes, being the net of the defined benefit obligations and the fair value of the schemes’ assets. The defined benefit obligation is calculated as the present value of the estimated future cash flows, discounted using high-quality long dated corporate bond rates. The superannuation expense is recognised in operating expenses and remeasurements are recognised through other comprehensive income. Critical accounting assumptions and estimates The actuarial valuation of plan obligations is dependent upon a series of assumptions, principally price inflation, salary growth, mortality, morbidity, discount rate and investment returns. Different assumptions could significantly alter the valuation of the plan assets and obligations and the superannuation cost recognised in the income statement. Westpac had the following defined benefit plans at 30 September 2019: Date of last actuarial assessment of the Name of plan Type Form of benefit funding status Westpac Group Plan (WGP) Defined benefit and accumulation Indexed pension and lump sum 30 June 2018 Westpac New Zealand Superannuation Scheme (WNZS) Defined benefit and accumulation Indexed pension and lump sum 30 June 2017 Westpac Banking Corporation UK Staff Superannuation Scheme (UKSS) Defined benefit Indexed pension and lump sum 5 April 2018 Westpac UK Medical Benefits Scheme Defined benefit Medical benefits n/a The defined benefit sections of the schemes are closed to new members. The Group has no obligation beyond the annual contributions for the accumulation or defined contribution sections of the schemes. The WGP is the Group’s principal defined benefit plan and is managed and administered in accordance with the terms of its trust deed and relevant legislation in Australia. Its defined benefit liabilities are based on salary and length of membership for active members and inflation in the case of pensioners. The defined benefit schemes expose the Group to the following risks: ▪ discount rate – reductions in the discount rate would increase the present value of the future payments; ▪ inflation rate – increases in the inflation rate would increase the payments to pensioners; ▪ investment risk – lower investment returns would increase the contributions needed to offset the shortfall; ▪ mortality risk – members may live longer than expected extending the cash flows payable by the Group; ▪ behavioural risk - higher proportion of members taking some of their benefits as a pension rather than a lump sum would increase the cashflows payable by the group; and ▪ legislative risk – legislative changes could be made which increase the cost of providing defined benefits. Investment risk is managed by setting benchmarks for the allocation of plan assets between asset classes. The long-term investment strategy will often adopt relatively high levels of equity investment in order to: ▪ secure attractive long term investment returns; and ▪ provide an opportunity for capital appreciation and dividend growth, which gives some protection against inflation. Funding recommendations for the WGP, WNZS and the UKSS are made based on triennial actuarial valuations. The funding valuation of the defined benefit plans are based on different assumptions to the calculation of the defined benefit surplus/deficit for accounting purposes. Based on the most recent valuations, the defined benefit plan assets are adequate to cover the present value of the accrued benefits of all members with a combined surplus of $158 million (2018: $324 million). Current contribution rates are as follows: ▪ WGP – contributions are made to the WGP at the rate of 11.8% of members’ salaries; ▪ WNZS – contributions are made to the WNZS at the rate of 12% of members’ salaries; and ▪ UKSS – contributions are made to the UKSS at the rate of £1.05 million per year. Contributions Consolidated Parent Entity $m Employer contributions 28 27 30 Member contributions 11 11 11 Expected employer contributions for the year ended 30 September 2020 are $26 million. Expense recognised Consolidated Parent Entity $m Current service cost 33 32 37 Net interest cost on net benefit liability (2) (2) — Total defined benefit expense 31 30 37 Defined benefit balances recognised Consolidated Parent Entity $m Benefit obligation at end of the year 2,799 2,314 2,710 2,239 Fair value of plan assets at end of the year 2,464 2,378 2,405 2,319 Net surplus/(deficit) (335) 64 (305) 80 Defined benefit surplus 1 73 89 73 89 Defined benefit deficit 2 (408) (25) (378) (9) Net surplus/(deficit) (335) 64 (305) 80 1. The defined benefit surplus is recognised in other assets. 2. The defined benefit deficit is recognised in other liabilities. The average duration of the defined benefit obligation is 14 years (2018: 11 years). Significant assumptions 2019 2018 Australian Overseas Australian Overseas Consolidated and Parent Entity Funds Funds Funds Funds Discount rate 2.6 % 1.1% - 1.8 % 4.1 % 2.6% - 2.9 % Salary increases 2.4 % 3.0% - 4.9 % 2.9 % 3% - 5 % Inflation rate (pensioners received inflationary increase) 1.4 % 2.0% - 3.4 % 1.9 % 2% - 3.5 % Life expectancy of a 60-year-old male 31.1 27.9 - 28.1 31.0 27.9 - 28.4 Life expectancy of a 60-year-old female 34.0 29.3 - 29.5 33.9 29.4 - 29.6 Sensitivity to changes in significant assumptions The table below shows the impact of changes in assumptions on the defined benefit obligation for the WGP. No reasonably possible changes in the assumptions of the Group’s other defined benefit plans would have a material impact on the defined benefit obligation. Increase in obligation Change in assumption 0.5% decrease in discount rate 205 120 0.5% increase in annual salary increases 14 8 0.5% increase in inflation rate (pensioners receive inflationary increases) 188 111 1 year increase in life expectancy 45 38 Asset allocation 2019 2018 Consolidated and Parent Entity Australian Overseas Australian Overseas % Funds Funds Funds Funds Cash 3 % 3 % 5 % 2 % Equity instruments 45 % 7 % 45 % 7 % Debt instruments 28 % 5 % 28 % 80 % Property 10 % 1 % 10 % 1 % Other assets 14 % 84 % 12 % 10 % Total 100 % 100 % 100 % 100 % Equity and debt instruments are mainly quoted assets while property and other assets are mainly unquoted. Other assets include infrastructure funds and private equity funds.

Auditor's remuneration

Auditor's remuneration	12 Months Ended
	Sep. 30, 2019
Auditor's remuneration
Auditor's remuneration	OTHER Note 35. Auditor’s remuneration The fees payable to the auditor, PricewaterhouseCoopers (PwC), and overseas firms belonging to the PwC network of firms were: Consolidated Parent Entity $'000 Audit and audit-related fees Audit fees PwC Australia 28,153 19,999 28,025 19,967 Overseas PwC network firms 3,216 3,338 321 68 Total audit fees 31,369 23,337 28,346 20,035 Audit-related fees PwC Australia 3,569 2,316 3,418 2,224 Overseas PwC network firms 128 117 2 — Total audit-related fees 3,697 2,433 3,420 2,224 Total audit and audit-related fees 35,066 25,770 31,766 22,259 Tax fees PwC Australia 53 169 53 49 Total tax fees 53 169 53 49 Other fees PwC Australia 70 1,581 70 1,501 Overseas PwC network firms 502 — 502 — Total other fees 572 1,581 572 1,501 Total audit and non-audit fees 35,691 27,520 32,391 23,809 Fees payable to the auditor have been categorised as follows: Audit The year end audit, half-year review and comfort letters associated with debt issues and capital raisings. Audit-related Consultations regarding accounting standards and reporting requirements, regulatory compliance reviews and assurance related to debt and capital offerings. Tax Tax compliance and tax advisory services. Other Various services including systems assurance, compliance advice and controls reviews. It is Westpac’s policy to engage PwC on assignments additional to their statutory audit duties only if their independence is not impaired or seen to be impaired and where their expertise and experience with Westpac is important. All services were approved by the Audit Committee in accordance with the pre-approval policy and procedures. PwC also received fees of $7.5 million (2018: $7.5 million) for various entities which are related to Westpac but not consolidated. These non-consolidated entities include entities sponsored by the Group, trusts of which a Westpac Group entity is trustee, manager or responsible entity, superannuation funds and pension funds.

Related party disclosures

Related party disclosures	12 Months Ended
	Sep. 30, 2019
Related party disclosures
Related party disclosures	Note 36. Related party disclosures Related parties Westpac’s related parties are those it controls or can exert significant influence over. Examples include subsidiaries, associates, joint ventures and superannuation plans as well as key management personnel and their related parties. Key management personnel (KMP) Key management personnel are those who, directly or indirectly, have authority and responsibility for planning, directing and controlling the activities of Westpac. This includes all Executives and Non-Executive Directors. Parent Entity Westpac Banking Corporation is the ultimate parent company of the Group. Subsidiaries - Note 31 The Parent Entity has the following related party transactions and balances with subsidiaries: Type of transaction/balance Details disclosed in Balances due to/from subsidiaries Balance Sheet Dividend income/Transactions with subsidiaries Note 4 Interest income and Interest expense Note 3 Tax consolidated group transactions and undertakings Note 7 Guarantees and undertakings Note 27 The balances due to/from subsidiaries include a wide range of banking and other financial facilities. The terms and conditions of related party transactions between the Parent Entity and subsidiaries are sometimes different to commercial terms and conditions. Related party transactions between the Parent Entity and subsidiaries eliminate on consolidation. Associates - Note 31 The Group provides a wide range of banking and other financial facilities and funds management activities to its associates on commercial terms and conditions. Superannuation plans The Group contributed $347 million (2018: $348 million) to defined contribution plans and $28 million to defined benefit plans (2018: $30 million). Refer to Note 34. Remuneration of KMP Total remuneration of the KMP was: Short-term Post Employment Other Long-term Termination Share-based $ Benefits Benefits Benefits Benefits Payments Total Consolidated 2019 23,805,197 712,883 36,572 558,984 20,691,480 45,805,116 2018 23,210,820 618,631 297,495 — 16,086,623 40,213,569 Parent Entity 2019 22,515,477 625,173 36,572 558,984 19,783,900 43,520,106 2018 21,807,008 537,187 297,495 — 15,301,417 37,943,107 Other transactions with KMP KMP receive personal banking and financial investment services from the Group in the ordinary course of business. The terms and conditions, for example interest rates and collateral, and the risks to Westpac are comparable to transactions with other employees and did not involve more than the normal risk of repayment or present other unfavourable features. Details of loans provided and the related interest charged to KMP and their related parties are as follows: Interest Payable Closing Loan Number of KMP $ for the Year Balance with Loans 2019 672,167 31,718,007 14 2018 650,969 17,498,526 13 Options and share rights holdings For compliance with SEC disclosure requirements, the following table sets out certain details of the performance options, performance share rights and unhurdled share rights held at 30 September 2019 by the CEO and other key management personnel (including their related parties): Number of Latest Date of Exercise Share Rights Managing Director & Chief Executive Officer Brian Hartzer Ranges from 1 October 2030 to 1 October 2033 Group Executives Craig Bright Ranges from 1 October 2033 to 1 October 2033 Lyn Cobley Ranges from 1 October 2030 to 1 October 2033 Peter King Ranges from 1 October 2030 to 1 October 2033 Rebecca Lim Ranges from 1 October 2030 to 1 October 2033 David Lindberg Ranges from 1 October 2030 to 1 April 2034 Carolyn McCann Ranges from 1 October 2030 to 1 October 2033 David McLean Ranges from 1 October 2022 to 1 October 2033 Christine Parker Ranges from 1 October 2030 to 1 October 2033 David Stephen Ranges from 1 October 2032 to 1 October 2033 Gary Thursby Ranges from 1 October 2030 to 1 October 2033 Alastair Welsh Ranges from 1 October 2030 to 1 October 2030 Former Group Executive Brad Cooper Ranges from 1 October 2030 to 1 October 2033 Dave Curran Ranges from 1 October 2030 to 1 October 2033 George Frazis Ranges from 1 October 2030 to 1 October 2033 The Group has not issued any options during the year and previously issued options has either been exercised or lapsed as at 1 October 2018.

Notes to the cash flow statemen

Notes to the cash flow statements	12 Months Ended
	Sep. 30, 2019
Notes to the cash flow statements
Notes to the cash flow statements	Note 37. Notes to the cash flow statements 1 Accounting policy Cash and balances with central banks include cash held at branches and in ATMs, balances with overseas banks in their local currency and balances with central banks including accounts with the RBA and accounts with overseas central banks. Reconciliation of net cash provided by/(used in) operating activities to net profit for the year is set out below: Consolidated Parent Entity $m Net profit for the year 6,790 8,099 7,997 7,121 8,144 Adjustments: Depreciation, amortisation and impairment 1,079 1,144 1,269 1,082 952 Impairment charges 966 889 1,021 893 820 Net (decrease)/increase in current and deferred tax (541) (96) (34) (804) (598) (Increase)/decrease in accrued interest receivable 132 (83) (75) 98 (74) (Decrease)/increase in accrued interest payable (341) 241 148 (321) 217 (Decrease)/increase in provisions 1,143 289 219 1,214 294 Other non-cash items (832) 332 (419) (329) 420 Cash flows from operating activities before changes in operating assets and liabilities 8,396 10,815 10,126 8,954 10,175 Net (increase)/decrease in derivative financial instruments 7,605 8,584 (5,042) 6,581 8,263 Net (increase)/decrease in life insurance assets and liabilities (134) (230) 219 — - (Increase)/decrease in other operating assets: Collateral paid (847) 969 2,320 (755) 662 Trading securities and other financial assets measured at fair value (7,629) 3,492 (4,729) (7,358) 2,815 Loans (4,188) (24,740) (26,815) (3,312) (23,661) Other financial assets 336 859 466 324 502 Other assets (13) 10 67 (41) 33 (Decrease)/increase in other operating liabilities: Collateral received 1,007 (295) 739 1,004 (606) Deposits and other borrowings 1,113 23,928 23,062 963 20,783 Other financial liabilities 1,463 (3,632) 2,506 1,555 (3,742) Other liabilities (5) 10 (82) (24) 17 Net cash provided by/(used in) operating activities 7,104 19,770 2,837 7,891 15,241 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. Details of the assets and liabilities over which control ceased Details of the entities over which control ceased are provided in Note 31. Consolidated Parent Entity $m Assets: Cash and balances with central banks 3 10 — — — Trading securities and financial assets measured at fair value 3 — — — — Property and equipment — 2 — — — Deferred tax assets — 4 — — — Intangible assets — 15 — — — Other financial assets 3 5 — — — Total assets 9 36 — — — Liabilities: Provisions — 2 — — — Other liabilities — 3 — — — Total liabilities — 5 — — — Total equity attributable to owners of Westpac Banking Corporation 9 31 — — — Cash proceeds (net of transaction costs) 2 19 — — — Total consideration 2 19 — — — Reserves recycled to income statement 10 3 — — — Gain/(loss) on disposal 3 (9) — — — Reconciliation of cash proceeds from disposal Cash proceeds received (net of transaction costs) 2 19 — — — Less: Cash deconsolidated (3) (10) — — — Cash consideration (paid)/received (net of transaction costs and cash held) (1) 9 — — — Non-cash financing activities Consolidated Parent Entity $m Shares issued under the dividend reinvestment plan 1,489 631 1,452 1,489 631 Shares issued from the conversion of Westpac CPS — 566 — — 566 On 13 March 2018, $623 million of CPS were transferred to the Westpac CPS nominated party for $100 each pursuant to the Westpac Capital Notes 5 reinvestment offer. Those CPS were subsequently bought back and cancelled by Westpac. On 3 April 2018, the remaining $566 million of CPS were transferred to the Westpac CPS nominated party for $100 each. Following the transfer, those remaining CPS were converted into 19,189,765 ordinary shares. Restricted cash Certain of our foreign operations are required to maintain reserves or minimum balances with central banks in their respective countries of operation, totalling $330 million (2018: $357 million) for the Group and $224 million (2018: $250 million) for the Parent Entity which are included in cash and balances with central banks.

Subsequent events

Subsequent events	12 Months Ended
	Sep. 30, 2019
Subsequent events
Subsequent events	Note 38. Subsequent events Since the end of the year ended 30 September 2019, the Board has determined to pay a fully franked final dividend of 80 cents per fully paid ordinary share. The dividend is expected to be $2,791 million. The dividend is not recognised as a liability as at 30 September 2019. The proposed payment date of the dividend is 20 December 2019. The Board has determined to issue shares to satisfy the Dividend Re-investment Plan (DRP) for the final 2019 ordinary dividend. The market price used to determine the number of shares issued under the DRP will be set over the 10 trading days commencing 18 November 2019. On 4 November 2019, Westpac announced that it will be undertaking an underwritten placement of fully paid ordinary shares in Westpac to institutional investors to raise $2 billion. As further announced, following the placement, Westpac will make a share purchase plan available to shareholders and to raise approximately $500 million, subject to scaleback, and with the ability to raise less or more. No other matters have arisen since the year ended 30 September 2019 which are not otherwise dealt with in this report, that have significantly affected or may significantly affect the operations of the Group, the results of its operations or the state of affairs of the Group in subsequent periods.

Accounting polices relating to

Accounting polices relating to prior years	12 Months Ended
	Sep. 30, 2019
Accounting polices relating to prior years
Accounting policies relating to prior years	Note 39. Accounting polices relating to prior years Due to the adoption of AASB 9, the accounting policies relating to some financial instruments and related balances have changed. The policies applicable to the current year are provided in the relevant note to the financial statements above. As prior comparative years have not been restated, the accounting policies detailed below reflect the policies applicable to financial years prior to 2019 based on AASB 139. Refer to Note 1 for further information. Accounting policy relating to impairment (Note 6 and Note 13) Impairment charges (Note 6) At each balance sheet date, the Group assesses whether there is any objective evidence of impairment of its loan portfolio. An impairment charge is recognised if there is objective evidence that the principal or interest repayments may not be recoverable and when the financial impact of the non-recoverable loan can be reliably measured. Objective evidence of impairment could include a breach of contract with the Group such as a default on interest or principal payments, a borrower experiencing significant financial difficulties or observable economic conditions that correlate to defaults on a group of loans. The impairment charge is measured as the difference between the loan’s current carrying amount and the present value of its estimated future cash flows. The estimated future cash flows exclude any expected future credit losses which have not yet occurred and are discounted to their present value using the loan’s original effective interest rate. If a loan has a variable interest rate, the discount rate for measuring any impairment is the current effective interest rate. The impairment charge is recognised in the income statement with a corresponding reduction of the carrying value of the loan through an offsetting provision account (refer to Note 13). In subsequent periods, objective evidence may indicate that an impairment charge should be reversed. Objective evidence could include a borrower’s credit rating or financial circumstances improving. The impairment charge is reversed in the income statement of that future period and the related provision for impairment is reduced. Uncollectable loans The policy for uncollectible loans is consistent with that applicable to 2019 based on AASB 9. Provision for impairment charges (Note 13) The Group recognises two types of impairment provisions for its loans, being provisions for loans which are: ▪ individually assessed for impairment; and ▪ collectively assessed for impairment. The Group assesses impairment as follows: ▪ individually for loans that exceed specified thresholds. Where there is objective evidence of impairment, individually assessed provisions will be recognised; and ▪ collectively for loans below the specified thresholds noted above or if there is no objective evidence of impairment. These loans are included in a group of loans with similar risk characteristics and collectively assessed for impairment. If there is objective evidence that the group of loans is collectively impaired, collectively assessed provisions will be recognised. Critical accounting assumptions and estimates The methodology and assumptions used for estimating future cash flows are reviewed regularly by the Group to reduce differences between impairment provisions and actual loss experience. Individual component Key judgements include the business prospects for the customer, the realisable value of collateral, the Group’s position relative to other claimants, the reliability of customer information and the likely cost and duration of recovering the loan. Judgements can change with time as new information becomes available or as loan recovery strategies evolve, which may result in revisions to the impairment provision. Collective component Collective provisions are established on a portfolio basis taking into account the level of arrears, collateral and security, past loss experience, current economic conditions, expected default and timing of recovery based on portfolio trends. Key judgements include estimated loss rates and their related emergence periods. The emergence period for each loan type is determined through studies of loss emergence patterns. Loan files are reviewed to identify the average time period between observable loss indicator events and the loss becoming identifiable. Actual credit losses may differ materially from reported loan impairment provisions due to uncertainties including interest rates and their effect on consumer spending, unemployment levels, payment behaviour and bankruptcy rates. Accounting policy relating to classification and measurement of financial instruments (Policy prior to Note 10, Note 11 and Note 12) Classification and measurement of financial assets and financial liabilities (Policy prior to Note 10) The Group classifies its financial assets in the following categories: cash and balances with central banks, receivables due from financial institutions, trading securities and financial assets designated at fair value, derivative financial instruments, available-for-sale securities, loans, life insurance assets and regulatory deposits with central banks overseas. The Group has not classified any of its financial assets as held-to-maturity investments. The Group classifies significant financial liabilities in the following categories: payables due to other financial institutions, deposits and other borrowings, other financial liabilities at fair value through income statement, derivative financial instruments, debt issues and loan capital. Financial assets and financial liabilities measured at fair value through income statement are recognised initially at fair value. All other financial assets and financial liabilities are recognised initially at fair value plus directly attributable transaction costs. Available-for-sale securities (Note 11) Available-for-sale debt securities (government and other) and equity securities are held at fair value with gains and losses recognised in other comprehensive income (OCI) except for interest on debt securities, dividends on equity securities, and impairment charges which are recognised in the income statement. The cumulative gain or loss recognised in OCI is subsequently recognised in the income statement when the instrument is disposed. At each reporting date, the Group assesses whether any available-for-sale securities are impaired. Impairment exists if one or more events have occurred which have a negative impact on the security's estimated cash flows. For debt instruments, evidence of impairment includes significant financial difficulties or adverse changes in the payment status of an issuer. For equity securities, a significant or prolonged decline in the fair value of the security below its cost is considered evidence of impairment. If impairment exists, the cumulative loss is removed from OCI and recognised in the income statement. Any subsequent reversals of impairment on debt securities are also recognised in the income statement. Subsequent reversal of impairment charges on equity instruments is not recognised in the income statement until the instrument is disposed. Loans (Note 12) Loans are financial assets initially recognised at fair value plus directly attributable transaction costs and fees. Loans are subsequently measured at amortised cost using the effective interest rate method and are presented net of any provisions for impairment charges except for a portfolio of loans which are subsequently measured at fair value to reduce an accounting mismatch.

Financial statements preparat_2

Financial statements preparation (Policies)	12 Months Ended
	Sep. 30, 2019
Financial statements preparation
Basis of accounting	Basis of accounting This financial report is a general purpose financial report prepared in accordance with: ▪ the requirements for an authorised deposit-taking institution under the Banking Act 1959 (as amended); ▪ Australian Accounting Standards (AAS) and Interpretations as issued by the Australian Accounting Standards Board (AASB); and ▪ the Corporations Act 2001 . Westpac Banking Corporation is a for-profit entity for the purposes of preparing this financial report. The financial report also complies with International Financial Reporting Standards (IFRS) as issued by the International Accounting Standards Board (IASB) and Interpretations as issued by the IFRS Interpretations Committee (IFRIC). It also includes additional disclosures required for foreign registrants by the United States Securities and Exchange Commission (US SEC). All amounts have been rounded in accordance with ASIC Corporations (Rounding in Financial/Directors’ Reports) Instrument 2016/191, to the nearest million dollars, unless otherwise stated.
Historical cost convention	Historical cost convention The financial report has been prepared under the historical cost convention, as modified by applying fair value accounting to financial assets and financial liabilities (including derivative instruments) measured at fair value through income statement (FVIS) or in other comprehensive income
Changes in accounting policies	Changes in accounting policies Balance sheet The following voluntary presentation changes to the balance sheet (and related notes) have been made to improve consistency and provide more relevant information to the users of the financial statements by reporting balances of a similar nature together in the same place in the balance sheet. These changes have no effect on the measurement of these items and therefore had no impact on retained earnings or net profit. These changes are: ▪ the addition of new balance sheet lines for ‘collateral paid’, ‘other financial assets’, ‘collateral received’ and ‘other financial liabilities’; ▪ removal of the balance sheet line ‘receivables due from other financial institutions’ and reclassification to ‘collateral paid’ and ‘other financial assets’; ▪ removal of the balance sheet line ‘regulatory deposits with central banks overseas’ and reclassification to ‘cash and balances with central banks’ and ‘trading securities and financial assets measured at FVIS; ▪ removal of the balance sheet line ‘payables due to other financial institutions’ and reclassification to ‘collateral received’ and ‘other financial liabilities’; ▪ reclassification of collateral balances with non-financial institutions from ‘other assets’ and ‘other liabilities’ to ‘collateral paid’ and ‘collateral received’ respectively; ▪ reclassification of financial assets or financial liabilities included in other assets or other liabilities respectively to other financial assets and other financial liabilities respectively; and ▪ reclassification of other financial liabilities at FVIS to other financial liabilities. Collateral paid/collateral received includes cash provided to/received from counterparties as collateral over financial liabilities/assets arising from derivative contracts, stock borrowing arrangements and funding transactions. It includes initial and variation margin placed as security for derivative transactions. Comparatives for 30 September 2018 have been restated for these voluntary presentation changes and are detailed as follows. Consolidated Parent Entity Presentation Presentation $m Reported changes Restated Reported changes Restated Assets Cash and balances with central banks 26,431 357 26,788 24,726 250 24,976 Receivables due from other financial institutions 5,790 (5,790) — 5,711 (5,711) — Collateral paid — 4,787 4,787 — 4,722 4,722 Trading securities and financial assets measured at FVIS 22,134 998 23,132 20,417 998 21,415 Regulatory deposits with central banks overseas 1,355 (1,355) — 1,248 (1,248) — Other financial assets 1 — 5,517 5,517 — 4,666 4,666 Other assets 5,135 (4,514) 621 3,988 (3,677) 311 All other assets 818,747 — 818,747 867,140 — 867,140 Total assets 879,592 — 879,592 923,230 — 923,230 Liabilities Payables due to other financial institutions 18,137 (18,137) — 17,682 (17,682) — Collateral received — 2,184 2,184 — 1,748 1,748 Other financial liabilities at FVIS 4,297 (4,297) — 4,297 (4,297) — Other financial liabilities 1 — 28,105 28,105 — 27,266 27,266 Other liabilities 9,193 (7,855) 1,338 7,292 (7,035) 257 All other liabilities 783,392 — 783,392 838,603 — 838,603 Total liabilities 815,019 — 815,019 867,874 — 867,874 1. Refer to Note 14 and Note 17 for further information. Income statement The following voluntary presentation changes to the income statement (and related notes) have been made to provide more relevant information to the users of the financial statements. These changes have no effect on the measurement of these items and therefore had no impact on retained earnings or net profit. Net interest income ▪ The components of interest income and interest expense relating to the balance sheet reclassifications have been restated accordingly. Note that there was no net impact to total interest income, total interest expense or to net interest income. Comparatives have been restated for these voluntary presentation changes and are detailed in the following table. ▪ In addition, to comply with disclosure requirements, interest income calculated using the effective interest rate method has been presented separately from other interest income. For consistency, interest expense is presented in the same way. The details are provided in Note 3. Consolidated 2018 Consolidated 2017 Parent Entity 2018 Presentation Presentation Presentation $m Reported changes Restated Reported changes Restated Reported changes Restated Note 3: Net interest income Interest income Cash and balances with central banks 325 1 326 241 1 242 300 1 301 Receivables due from other financial institutions 108 (108) — 110 (110) — 102 (102) — Collateral paid — 129 129 — 96 96 — 126 126 Net ineffectiveness on qualifying hedges (18) — (18) (22) — (22) (22) — (22) Trading securities and financial assets measured at FVIS 542 22 564 558 16 574 499 22 521 Available-for-sale securities 1,914 — 1,914 1,795 — 1,795 1,743 — 1,743 Investment securities — — — — — — — — — Loans 29,621 — 29,621 28,504 — 28,504 25,801 — 25,801 Regulatory deposits with central banks overseas 23 (23) — 17 (17) — 23 (23) — Due from subsidiaries — — — — — — 4,328 — 4,328 Other interest income 56 (21) 35 29 14 43 56 (24) 32 Total interest income 32,571 — 32,571 31,232 — 31,232 32,830 — 32,830 Interest expense Payable due to other financial institutions (319) 319 — (279) 279 — (314) 314 — Collateral received — (45) (45) — (19) (19) — (41) (41) Deposits and other borrowings (9,021) — (9,021) (8,868) — (8,868) (7,817) — (7,817) Trading liabilities (959) — (959) (2,065) — (2,065) (754) — (754) Debt issues (4,480) — (4,480) (3,585) — (3,585) (3,958) — (3,958) Due to subsidiaries — — — — — — (4,851) — (4,851) Loan capital (774) — (774) (693) — (693) (774) — (774) Bank levy (378) — (378) (95) — (95) (378) — (378) Other interest expense (135) (274) (409) (131) (260) (391) (131) (273) (404) Total interest expense (16,066) — (16,066) (15,716) — (15,716) (18,977) — (18,977) Net interest income 16,505 — 16,505 15,516 — 15,516 13,853 — 13,853 Non-interest income and operating expenses ▪ Disaggregating the non-interest income line on the income statement into four separate lines for net fee income, net wealth management and insurance income, trading income and other income. ▪ Separating net fee income in the non-interest income note into fee income and fee expenses. ▪ Reclassifying credit card loyalty program expense from operating expenses to the new fee expenses category in the non-interest income note. Fee expenses include those expenses that are incremental external costs that vary directly with the provision of goods or services to customers (excluding expenses which would qualify as transaction costs relating to the issue, acquisition or disposal of a financial asset or a financial liability which are deferred and included in the effective interest rate and recognised in net interest income). An incremental cost is one that would not have been incurred if a specific good or service had not been provided to a specific customer. Comparatives have been restated for these voluntary presentation changes and are detailed in the following table. Consolidated 2018 Consolidated 2017 Parent Entity 2018 Presentation Presentation Presentation $m Reported changes Restated Reported changes Restated Reported changes Restated Income statement Net interest income 16,505 — 16,505 15,516 — 15,516 13,853 — 13,853 Non-interest income 5,628 (5,628) — 6,286 (6,286) — 5,825 (5,825) — Net fee income — 2,424 2,424 — 2,603 2,603 — 2,172 2,172 Net wealth management and insurance income — 2,061 2,061 — 1,800 1,800 — — — Trading income — 945 945 — 1,202 1,202 — 919 919 Other income — 72 72 — 529 529 — 2,633 2,633 Net operating income before operating expenses and impairment charges 22,133 (126) 22,007 21,802 (152) 21,650 19,678 (101) 19,577 Operating expenses (9,692) 126 (9,566) (9,434) 152 (9,282) (8,101) 101 (8,000) Impairment charges (710) — (710) (853) — (853) (682) — (682) Profit before income tax 11,731 — 11,731 11,515 — 11,515 10,895 — 10,895 Income tax expense (3,632) — (3,632) (3,518) — (3,518) (2,751) — (2,751) Net profit for the year 8,099 — 8,099 7,997 — 7,997 8,144 — 8,144 Note 4: Non-interest income (extract) Net fee income Facility fees 1,347 18 1,365 1,333 17 1,350 1,333 18 1,351 Transaction fees 1,105 77 1,182 1,193 65 1,258 886 53 939 Other non-risk fee income 98 — 98 229 — 229 54 — 54 Fee income 2,550 95 2,645 2,755 82 2,837 2,273 71 2,344 Credit card loyalty programs — (126) (126) — (152) (152) — (101) (101) Transaction fee related expenses — (95) (95) — (82) (82) — (71) (71) Fee expenses — (221) (221) — (234) (234) — (172) (172) Net fee income 2,550 (126) 2,424 2,755 (152) 2,603 2,273 (101) 2,172 Note 5: Operating expenses (extract) Credit card loyalty programs 126 (126) — 152 (152) — 101 (101) — Total other expenses 1,662 (126) 1,536 1,652 (152) 1,500 1,357 (101) 1,256 Total operating expenses 9,692 (126) 9,566 9,434 (152) 9,282 8,101 (101) 8,000
Standards adopted during the year ended 30 September 2019	Standards adopted during the year ended 30 September 2019 AASB 9 Financial Instruments (December 2014) (AASB 9) The Group adopted AASB 9 on 1 October 2018. The adoption of AASB 9 has been applied by adjusting the opening balance sheet at 1 October 2018, with no restatement of comparatives as permitted by the standard. The adoption of AASB 9 reduced retained earnings at 1 October 2018 by $722 million (net of tax) for the Group and by $495 million (net of tax) for the Parent Entity. This was primarily due to the increase in impairment provisions under the new standard. Impairment AASB 9 introduces a revised impairment model which requires entities to recognise expected credit losses (ECL) based on unbiased forward looking information, replacing the incurred loss model under AASB 139 Financial instruments: Recognition and Measurement (AASB 139) which only recognised impairment if there was objective evidence that a loss had been incurred. The revised impairment model applies to all financial assets at amortised cost, lease receivables, debt securities measured at FVOCI, and credit commitments. The accounting policy for the provision for ECL under AASB 9 is detailed in Notes 6 and 13. Classification and measurement AASB 9 replaced the classification and measurement model in AASB 139 with a new model that categorises financial assets based on: a) the business model within which the assets are managed and b) whether the contractual cash flows under the instrument represent solely payments of principal and interest (SPPI). The accounting policies for the classification and measurement of financial assets and financial liabilities precede Note 10 and are also located in the relevant notes to the financial statements for financial assets and financial liabilities. In the 2014 financial year, the Group early adopted part of AASB 9 which relates to the recognition of the changes in fair value of financial liabilities designated at fair value attributable to Westpac’s own credit risk in other comprehensive income (except where it would create an accounting mismatch, in which case all changes in fair value are recognised in the income statement). As a result, the accounting for this remains unchanged for the Group. Hedging AASB 9 changes hedge accounting by increasing the eligibility of both hedged items and hedging instruments and introducing a more principles-based approach to assessing hedge effectiveness. Adoption of the new hedge accounting model is optional until the IASB completes its accounting for dynamic risk management project. Until this time, current hedge accounting under AASB 139 can continue to be applied. The Group has applied the option to continue hedge accounting under AASB 139, however the Group has adopted the amended AASB 7 Financial Instruments: Disclosures (AASB 7) hedge accounting disclosures as required. AASB 15 Revenue from Contracts with Customers (AASB 15) The Group adopted AASB 15 on 1 October 2018. It replaced AASB 118 Revenue and related interpretations and applies to all contracts with customers, except leases, financial instruments and insurance contracts. The standard provides a systematic approach to revenue recognition by introducing a five-step model governing revenue measurement and recognition. This includes: ▪ identifying the contract with customer; ▪ identifying each of the performance obligations included in the contract; ▪ determining the amount of consideration in the contract; ▪ allocating the consideration to each of the identified performance obligations; and ▪ recognising revenue as each performance obligation is satisfied. The Group has applied AASB 15 by reducing the opening balance of retained earnings at the date of initial application, 1 October 2018, by $5 million (net of tax) for the Group and by $7 million (net of tax) for the Parent Entity with no comparative restatement. In addition, the Group identified certain income and expenses which were previously reported on a net basis primarily within fee income which are now being presented on a gross basis. Finally, certain facility fees have been reclassified from non-interest income to interest income. Transition (AASB 9 and AASB 15) Impact of the adoption of AASB 9 – impairment The following tables show the impact of the adoption of AASB 9 on impairment balances. Provisions on debt Loss allowance securities and Provisions for on debt other financial Consolidated Provisions credit securities at assets at $m on loans commitments FVOCI 1 amortised cost Total 30 September 2018 - carrying amount 2,814 239 — — 3,053 ECL on amortised cost financial instruments 882 98 — 9 989 ECL on debt securities measured at FVOCI — — 2 — 2 1 October 2018 - AASB 9 carrying amount 3,696 337 2 9 4,044 Provisions on debt Loss allowance securities and Provisions for on debt other financial Parent Entity Provisions credit securities at assets at $m on loans commitments FVOCI 1 amortised cost Total 30 September 2018 - carrying amount 2,407 206 — — 2,613 ECL on amortised cost financial instruments 751 95 — — 846 ECL on debt securities measured at FVOCI — — 2 — 2 1 October 2018 - AASB 9 carrying amount 3,158 301 2 — 3,461 1. Impairment on debt securities at FVOCI is recognised in the income statement with a corresponding amount in other comprehensive income (refer to Note 28). There is no reduction of the carrying value of the debt security which remains at fair value. Impact of the adoption of AASB 9 – classification and measurement Investment securities Investment securities represent all debt and equity securities not measured at FVIS. Investment securities include debt securities at amortised cost and both debt and equity securities at FVOCI. As a result of the adoption of AASB 9, available-for-sale debt securities of $811 million for the Group and $10 million for the Parent Entity have been reclassified to investment securities - debt securities at amortised cost as the business model for these instruments is achieved by collecting the contractual cash flows and these cash flows represent SPPI. The remaining available-for-sale debt securities of $60 billion for the Group and $56 billion for the Parent Entity have been reclassified to investment securities measured at FVOCI. In addition, available-for-sale equity securities have been assessed on an instrument-by-instrument basis. For the Group, $275 million of available-for-sale equity securities have been reclassified to trading securities and financial assets measured at FVIS. The Group has elected to irrevocably designate the remaining $109 million of available-for-sale equity securities to continue to be measured at FVOCI. For the Parent Entity, all $67 million of available-for-sale equity securities were irrevocably designated to continue to be measured at FVOCI. Loans As a result of the adoption of AASB 9, for both the Group and the Parent Entity, $56 million of loans which were measured at amortised cost are measured at FVIS as the cash flows of the loan do not represent SPPI. 30 September 2018 1 October 2018 AASB 139 measurement basis AASB 9 measurement basis Change in measurement Consolidated Amortised basis under Amortised $m cost FVIS FVOCI Total AASB 9 cost FVIS FVOCI Total Financial assets Cash and balances with central banks 26,788 — — 26,788 No 26,788 — — 26,788 Collateral paid 4,787 — — 4,787 No 4,787 — — 4,787 Trading securities and financial assets measured at FVIS — 23,132 — 23,132 No — 23,132 — 23,132 Derivative financial instruments — 24,101 — 24,101 No — 24,101 — 24,101 Available-for-sale securities — — 61,119 61,119 Yes 811 275 60,033 61,119 Loans 1 709,144 546 — 709,690 Yes 709,088 602 — 709,690 Other financial assets 5,517 — — 5,517 No 5,517 — — 5,517 Life insurance assets — 9,450 — 9,450 No — 9,450 — 9,450 Total financial assets 746,236 57,229 61,119 864,584 746,991 57,560 60,033 864,584 Financial liabilities Collateral received 2,184 — — 2,184 No 2,184 — — 2,184 Deposits and other borrowings 518,107 41,178 — 559,285 No 518,107 41,178 — 559,285 Other financial liabilities 23,808 4,297 — 28,105 No 23,808 4,297 — 28,105 Derivative financial instruments — 24,407 — 24,407 No — 24,407 — 24,407 Debt issues 169,241 3,355 — 172,596 No 169,241 3,355 — 172,596 Life insurance liabilities — 7,597 — 7,597 No — 7,597 — 7,597 Loan capital 17,265 — — 17,265 No 17,265 — — 17,265 Total financial liabilities 730,605 80,834 — 811,439 730,605 80,834 — 811,439 30 September 2018 1 October 2018 AASB 139 measurement basis AASB 9 measurement basis Change in measurement Parent Entity Amortised basis under Amortised $m cost FVIS FVOCI Total AASB 9 cost FVIS FVOCI Total Financial assets Cash and balances with central banks 24,976 — — 24,976 No 24,976 — — 24,976 Collateral paid 4,722 — — 4,722 No 4,722 — — 4,722 Trading securities and financial assets measured at FVIS — 21,415 — 21,415 No — 21,415 — 21,415 Derivative financial instruments — 23,562 — 23,562 No — 23,562 — 23,562 Available-for-sale securities — — 56,513 56,513 Yes 10 — 56,503 56,513 Loans 1 629,622 546 — 630,168 Yes 629,566 602 — 630,168 Other financial assets 4,666 — — 4,666 No 4,666 — — 4,666 Due from subsidiaries 2,3 133,808 278 — 134,086 No 133,808 278 — 134,086 Total financial assets 797,794 45,801 56,513 900,108 797,748 45,857 56,503 900,108 Financial liabilities Collateral received 1,748 — — 1,748 No 1,748 — — 1,748 Deposits and other borrowings 460,406 40,062 — 500,468 No 460,406 40,062 — 500,468 Other financial liabilities 22,969 4,297 — 27,266 No 22,969 4,297 — 27,266 Derivative financial instruments — 24,229 — 24,229 No — 24,229 — 24,229 Debt issues 149,065 3,223 — 152,288 No 149,065 3,223 — 152,288 Due to subsidiaries 4 141,877 523 — 142,400 No 141,877 523 — 142,400 Loan capital 17,265 — — 17,265 No 17,265 — — 17,265 Total financial liabilities 793,330 72,334 — 865,664 793,330 72,334 — 865,664 1. As at 30 September 2018, loans at amortised cost were restated from $706,440 million to $709,144 million for the Group, and from $626,918 million to $629,622 million for the Parent Entity. Loans at FVIS were also restated from $3,250 million to $546 million for both the Group and the Parent Entity. 2. Due from subsidiaries excludes $6,511 million of long-term debt instruments with equity like characteristics which are part of the total investment in subsidiaries. 3. Comparatives have been restated to reclassify $278 million from amortised cost to FVIS. 4. Comparatives have been restated to reclassify $523 million from amortised cost to FVIS. Reconciliation of the opening balance sheet The following tables reconcile the reported 30 September 2018 balance sheet to the 1 October 2018 opening balance sheet on adoption of AASB 9 and AASB 15 showing separately the impact of adjustments relating to reclassification and remeasurement including the related tax impacts. 30 September 2018 1 October 2018 Restated Opening Consolidated Carrying AASB 9 changes AASB 15 carrying $m Amount Reclassifications Remeasurement 1 changes amount Assets Cash and balances with central banks 26,788 — — — 26,788 Collateral paid 4,787 — — — 4,787 Trading securities and financial assets measured at FVIS 23,132 275 — — 23,407 Derivative financial instruments 24,101 — — — 24,101 Available-for-sale securities 61,119 (61,119) — — — Investment securities — 60,844 (9) — 60,835 Loans (at amortised cost) 709,144 (56) (925) — 708,163 Loans (at fair value) 546 56 — — 602 Other financial assets 5,517 — — — 5,517 Deferred tax assets 1,180 — 300 — 1,480 All other assets 23,278 — — — 23,278 Total assets 879,592 — (634) — 878,958 Liabilities Collateral received 2,184 — — — 2,184 Deposits and other borrowings 559,285 — — — 559,285 Other financial liabilities 28,105 — — (12) 28,093 Derivative financial instruments 24,407 — — — 24,407 Debt issues 172,596 — — — 172,596 Provisions 1,928 — 98 — 2,026 Loan capital 17,265 — — — 17,265 All other liabilities 9,249 — (12) 17 9,254 Total liabilities 815,019 — 86 5 815,110 Net assets 64,573 — (720) (5) 63,848 Shareholders’ equity Share capital: Ordinary shares 36,054 — — — 36,054 Treasury shares and RSP treasury shares (493) — — — (493) Reserves 1,077 — 2 — 1,079 Retained profits 27,883 — (722) (5) 27,156 Total equity attributable to owners of Westpac Banking Corporation 64,521 — (720) (5) 63,796 Non-controlling interests 52 — — — 52 Total shareholder's equity and Non-controlling interests 64,573 — (720) (5) 63,848 1. The impact on adoption of expected credit loss provisioning resulted in increases in provisions on loans by $882 million, provisions for credit commitments by $98 million and loss allowance on debt securities at FVOCI by $2 million and provisions on debt securities at amortised cost by $9 million. 30 September 2018 1 October 2018 Restated Opening Parent Entity Carrying AASB 9 changes AASB 15 carrying $m Amount Reclassifications Remeasurement 1 changes amount Assets Cash and balances with central banks 24,976 — — — 24,976 Collateral paid 4,722 — — — 4,722 Trading securities and financial assets measured at FVIS 21,415 — — — 21,415 Derivative financial instruments 23,562 — — — 23,562 Available-for-sale securities 56,513 (56,513) — — — Investment securities — 56,513 — — 56,513 Loans (at amortised cost) 629,622 (56) (786) — 628,780 Loans (at fair value) 546 56 — — 602 Other financial assets 4,666 — — — 4,666 Due from subsidiaries 140,597 — — — 140,597 Investment in subsidiaries 4,508 — — — 4,508 Deferred tax assets 1,102 — 258 — 1,360 All other assets 11,001 — — — 11,001 Total assets 923,230 — (528) — 922,702 Liabilities Collateral received 1,748 — — — 1,748 Deposits and other borrowings 500,468 — — — 500,468 Other financial liabilities 27,266 — — (9) 27,257 Derivative financial instruments 24,229 — — — 24,229 Debt issues 152,288 — — — 152,288 Due to subsidiaries 142,400 — (118) — 142,282 Provisions 1,766 — 95 — 1,861 Loan capital 17,265 — — — 17,265 All other liabilities 444 — (12) 16 448 Total liabilities 867,874 — (35) 7 867,846 Net assets 55,356 — (493) (7) 54,856 Shareholders’ equity Share capital: Ordinary shares 36,054 — — — 36,054 Treasury shares and RSP treasury shares (508) — — — (508) Reserves 1,114 — 2 — 1,116 Retained profits 18,696 — (495) (7) 18,194 Total equity attributable to owners of Westpac Banking Corporation 55,356 — (493) (7) 54,856 Non-controlling interests — — — — — Total shareholder's equity and non-controlling interests 55,356 — (493) (7) 54,856 1. The impact on adoption of expected credit loss provisioning resulted in increases in provisions on loans by $751 million, provisions for credit commitments by $95 million and loss allowance on debt securities measured at FVOCI by $2 million. Included in the increase in provision on loans was $118 million relating to loans which have been securitised by the Parent Entity to subsidiaries. The due to subsidiaries balance has been reduced by this amount as the relevant subsidiary records the expected credit loss on these loans and adjusts its intergroup receivable from the Parent Entity accordingly. As permitted by AASB 9 and AASB 15, comparatives have not been restated. Comparatives have been restated for voluntary presentation changes as detailed in the section “Changes in accounting policies” above.
Business combinations	Business combinations Business combinations are accounted for using the acquisition method of accounting. Acquisition cost is measured as the aggregate of the fair value at the date of acquisition of the assets given, equity instruments issued or liabilities incurred or assumed. Acquisition-related costs are expensed as incurred (except for those costs arising on the issue of equity instruments which are recognised directly in equity). Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured at fair value on the acquisition date. Goodwill is measured as the excess of the acquisition cost, the amount of any non-controlling interest and the fair value of any previous Westpac equity interest in the acquiree, over the fair value of the identifiable net assets acquired.
Foreign currency translation	Foreign currency translation Functional and presentational currency The consolidated financial statements are presented in Australian dollars which is the Parent Entity’s functional and presentation currency. The functional currency of offshore entities is usually the main currency of the economy it operates in. Transactions and balances Foreign currency transactions are translated into the functional currency of the relevant branch or subsidiary using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation at year end exchange rates of monetary assets and liabilities denominated in foreign currencies are recognised in the income statement, except when deferred in other comprehensive income for qualifying cash flow hedges and qualifying net investment hedges. Foreign operations Assets and liabilities of foreign branches and subsidiaries that have a functional currency other than the Australian dollar are translated at exchange rates prevailing on the balance date. Income and expenses are translated at average exchange rates prevailing during the year. Equity balances are translated at historical exchange rates. The resulting exchange differences are recognised in the foreign currency translation reserve and in other comprehensive income. On consolidation, exchange differences arising from the translation of borrowings and other foreign currency instruments designated as hedges of the net investment in foreign operations are reflected in the foreign currency translation reserve and in other comprehensive income. When all or part of a foreign operation is disposed or borrowings that are part of the net investments are repaid, a proportionate share of such exchange differences is recognised in the income statement as part of the gain or loss on disposal or repayment of borrowing.
Critical accounting assumptions and estimates	Critical accounting assumptions and estimates Applying the Group’s accounting policies requires the use of judgement, assumptions and estimates which impact the financial information. The significant assumptions and estimates used are discussed in the relevant notes below: ▪ Note 7 Income tax ▪ Note 13 Provisions for expected credit losses/impairment charges ▪ Note 15 Life insurance assets and life insurance liabilities ▪ Note 22 Fair values of financial assets and financial liabilities ▪ Note 25 Intangible assets ▪ Note 27 Provisions, contingent liabilities, contingent assets and credit commitments ▪ Note 34 Superannuation commitments
Future developments in accounting standards	Future developments in accounting standards The following new standards and interpretations which may have a material impact on the Group have been issued but are not yet effective, and unless otherwise stated, have not been early adopted by the Group: AASB 16 Leases (AASB 16) was issued on 23 February 2016 and will be effective for the 30 September 2020 financial year. The standard will not result in significant changes for lessor accounting. The main changes under the standard are: ▪ all operating leases of greater than 12 months duration will be required to be presented on balance sheet by the lessee as a right-of-use (ROU) asset and lease liability. The asset and liability will initially be measured at the present value of non-cancellable lease payments and payments to be made in optional periods where it is reasonably certain that the option will be exercised; and ▪ all leases on balance sheet will give rise to a combination of interest expense on the lease liability and depreciation of the ROU asset. The AASB 16 implementation and governance program is led by Finance with representatives from the impacted areas of the business with oversight from the Chief Financial Officer. The project has identified the portfolios impacted by that standard which are predominantly property leases. In addition, the project has updated finance systems and processes, established a governance framework, updated relevant policies and addressed key judgements including the transition option that will be applied in order to determine the expected impact to the Group. The Group will adopt the standard using the simplified approach of transition with no restatement of comparative information. The expected impact on adoption of the standard will be to recognise a ROU asset of approximately $3.4 billion and an equivalent lease liability with no impact on retained earnings. The Group has determined that it will use the incremental borrowing rate as the discount rate when determining present value. This discount rate will be based on the remaining maturity of the lease at the date of transition. The Group will also apply the practical exemptions for low-value assets and short-term leases. AASB 17 Insurance Contracts (AASB 17) was issued on 19 July 2017 and will be effective for the 30 September 2022 year end unless early adopted. This will replace AASB 4 Insurance Contracts, AASB 1023 General Insurance Contracts and AASB 1038 Life Insurance Contracts . The main changes under the standard are: ▪ the scope of the standard may result in some contracts that are currently "unbundled", i.e. accounted for separately as insurance and investment contracts being required to be "bundled" and accounted for as an insurance contract; ▪ portfolios of contracts (with similar risks which are managed together) will be required to be disaggregated to a more granular level by both the age of a contract and the likelihood of the contract being onerous in order to determine the recognition of profit over the contract period (i.e. the contractual service margin). The contractual service margin uses a different basis to recognise profit to the current Margin on Services approach for life insurance and therefore the pattern of profit recognition is likely to differ; ▪ risk adjustments, which reflect uncertainties in the amount and timing of future cash flows, are required for both general and life insurance contracts rather than just general insurance contracts under the current accounting standards; ▪ the contract boundary, which is the period over which profit is recognised, differs and is determined based on the ability to compel the policyholder to pay premiums or the substantive obligation to provide coverage/services. For some general insurance contracts (e.g. some lender mortgage insurance and reinsurance contracts) this may result in the contract boundary being longer. For life insurance, in particular term renewable contracts, the contract boundary is expected to be shorter. Both will be impacted by different patterns of profit recognition compared to the current standards; ▪ a narrower definition of what acquisition costs may be deferred; ▪ an election to recognise changes in assumptions regarding discount rate in other comprehensive income rather than in profit and loss; ▪ an election to recognise changes in the fair value of assets supporting policy liabilities in other comprehensive income rather than through profit and loss; ▪ reinsurance contracts and the associated liability are to be determined separately to the gross contract liability and may have different contract boundaries; and ▪ additional disclosure requirements. The standard is expected to result in a reduction in the level of deferred acquisition costs, however the quantum of this and the profit and loss impacts to the Group are not yet practicable to determine. On 26 June 2019, the IASB issued an exposure draft proposing a number of amendments to the insurance contracts standard. If approved, these amendments would allow entities to: ▪ defer acquisition costs for anticipated renewals outside of the initial contract boundary; and ▪ recognise a gain in the P&L for reinsurance contracts, to offset losses from onerous contracts on initial recognition (to the extent the reinsurance contracts held covers the losses of each contract on a proportionate basis). In addition, the effective date of the standard would be deferred by one year to be applicable to the Group for the 30 September 2023 financial year. AASB Interpretation 23 Uncertainty over Income Tax Treatments (Interpretation 23) was issued in July 2017 and will be effective for the 30 September 2020 financial year. Interpretation 23 clarifies the recognition and measurement criteria in AASB 112 Income Taxes (AASB 112) where there is uncertainty over income tax treatments, and requires an assessment of each uncertain tax position as to whether it is probable that a taxation authority will accept the position. Where it is not considered probable, the effect of the uncertainty will be reflected in determining the relevant taxable profit or loss, tax bases, unused tax losses and unused tax credits or tax rates. The amount will be determined as either the single most likely amount or the sum of the probability weighted amounts in a range of possible outcomes, whichever better predicts the resolution of the uncertainty. Judgements will be reassessed as and when new facts and circumstances are presented. The interpretation is not expected to have a material impact on the Group. A revised Conceptual Framework (Framework) was issued in May 2019. This will be effective for the Group for the 30 September 2021 financial year. The revised Framework includes new definitions and recognition criteria for assets, liabilities, income and expenses and other relevant financial reporting concepts. The changes are not expected to have a material impact on the Group. Other amendments to existing standards that are not yet effective are not expected to have a material impact to the Group. Interbank-offered rates (IBOR) reform IBORs are interest rate benchmarks used in financial markets for pricing, valuing and hedging a wide variety of financial instruments such as derivatives, loans and bonds. Examples of IBOR include ‘LIBOR’ and ‘EURIBOR’. A review of the global major IBORs is being conducted to reform or replace existing IBORs with more suitable alternative reference rates (ARRs). This IBOR reform will impact the accounting for financial instruments that reference IBORs including hedge accounting, fair value methodologies and existing financial instruments that reference IBORs at transition. This replacement process is at different stages and is progressing at different speeds in different jurisdictions. Therefore, there is uncertainty as to the basis, method, timing and implications of transition to the ARRs. In October 2019, the AASB issued amendments to AASB 9, AASB 139 and AASB 7 which enable hedge accounting to continue for certain hedges that might otherwise need to be discontinued due to uncertainties arising from IBOR reform and requires certain disclosures. These amendments are effective for the Group for the 30 September 2021 financial year with early application permitted. As a result of these developments, the Group has applied judgement in the current reporting period to determine that hedge relationships that include IBORs as a hedged risk continue to qualify for hedge accounting. The Group continues to monitor these developments and the expected impact.
Segment reporting	Operating segments are presented on a basis consistent with information provided internally to Westpac’s key decision makers and reflects the management of the business, rather than the legal structure of the Group. Internally, Westpac uses ‘cash earnings’ in assessing the financial performance of its divisions. Management believes this allows the Group to: ▪ more effectively assess current year performance against prior years; ▪ compare performance across business divisions; and ▪ compare performance across peer companies. Cash earnings is viewed as a measure of the level of profit that is generated by ongoing operations and is therefore considered in assessing distributions, including dividends. Cash earnings is neither a measure of cash flow nor net profit determined on a cash accounting basis, as it includes both cash and non-cash adjustments to statutory net profit. To determine cash earnings, three categories of adjustments are made to statutory results: ▪ material items that key decision makers at the Westpac Group believe do not reflect ongoing operations; ▪ items that are not considered when dividends are recommended, such as the amortisation of intangibles, impact of Treasury shares and economic hedging impacts; and ▪ accounting reclassifications between individual line items that do not impact statutory results. Internal charges and transfer pricing adjustments have been reflected in the performance of each operating segment. Inter-segment pricing is determined on an arm’s length basis.
Net interest income	Interest income and interest expense for all interest earning financial assets and interest bearing financial liabilities at amortised cost or FVOCI, detailed within the table below, are recognised using the effective interest rate method. Net income from treasury’s interest rate and liquidity management activities and the cost of the Bank levy are included in net interest income. The effective interest rate method calculates the amortised cost of a financial instrument by discounting the financial instrument’s estimated future cash receipts or payments to their present value and allocates the interest income or interest expense, including any fees, costs, premiums or discounts integral to the instrument, over its expected life. Interest income is calculated based on the gross carrying amount of financial assets in stages 1 and 2 of the Group’s ECL model and on the carrying amount net of the provision for ECL for financial assets in stage 3. Refer to Note 13 for further details of the Group’s ECL model.
Non-interest income	Non-interest income includes net fee income, net wealth management and insurance income, trading income and other income. Net fee income When another party is involved in providing goods or services to a Group customer, the Group assesses whether the nature of the arrangement with its customer is as a principal provider or an agent of another party. Where the Group is acting as an agent for another party, the income earned by the Group is the net consideration received (i.e. the gross amount received from the customer less amounts paid to a third party provider). As an agent, the net consideration represents fee income for facilitating the transaction between the customer and the third party provider with primary responsibility for fulfilling the contract. Fee income Fee income is recognised when the performance obligation is satisfied by transferring the promised good or service to the customer. Fee income includes facility fees, transaction fees and other non-risk fee income. Facility fees include certain line fees, annual credit card fees and fees for providing customer bank accounts. They are recognised over the term of the facility/period of service on a straight line basis. Transaction fees are earned for facilitating banking transactions such as foreign exchange fees, telegraphic transfers and issuing bank cheques. Fees for these one-off transactions are recognised once the transaction has been completed. Transaction fees are also recognised for credit card transactions including interchange fees net of scheme charges. These are recognised once the transaction has been completed, however, a component of interchange fees received is deferred as unearned income as the Group has a future service obligation to customers under the Group’s credit card reward programs. Other non-risk fee income includes advisory and underwriting fees which are recognised when the related service is completed. Income which forms an integral part of the effective interest rate of a financial instrument is recognised using the effective interest method and recorded in interest income (for example, loan origination fees). Fee expenses Fee expenses include incremental external costs that vary directly with the provision of goods or services to customers. An incremental cost is one that would not have been incurred if a specific good or service had not been provided to a specific customer. Fee expenses which form an integral part of the effective interest rate of a financial instrument are recognised using the effective interest method and recorded in net interest income. Fee expenses include the costs associated with credit card loyalty programs which are recognised as an expense when the services are provided on the redemption of points as well as merchant transaction costs. Net wealth management and insurance income Wealth management income Wealth management fees earned for the ongoing management of customer funds and investments are recognised when the performance obligation is satisfied which is over the period of management. Insurance premium income Insurance premium income includes premiums earned for life insurance, life investment, loan mortgage insurance and general insurance products: ▪ life insurance premiums with a regular due date are recognised as revenue on an accrual basis; ▪ life investment premiums include a management fee component which is recognised as income over the period the service is provided. The deposit components of life insurance and investment contracts are not revenue and are treated as movements in life insurance liabilities; ▪ general insurance premium comprises amounts charged to policyholders, excluding taxes, and is recognised based on the likely pattern in which the insured risk is likely to emerge. The portion not yet earned based on the pattern assessment is recognised as unearned premium liability. Insurance claims expense ▪ life and general insurance contract claims are recognised as an expense when the liability is established; ▪ claims incurred in respect of life investment contracts represent withdrawals and are recognised as a reduction in life insurance liabilities. Trading income ▪ realised and unrealised gains or losses from changes in the fair value of trading assets, liabilities and derivatives are recognised in the period in which they arise (except day one profits or losses which are deferred, refer to Note 22); ▪ net income related to Treasury’s interest rate and liquidity management activities is included in net interest income. Other income - dividend income ▪ dividends on quoted shares are recognised on the ex-dividend date; ▪ dividends on unquoted shares are recognised when the company’s right to receive payment is established.
Impairment charges	As comparatives have not been restated upon the adoption of AASB 9 the accounting policy applied in 2019 differs to that applied in comparative periods. The accounting policy applied in comparative periods is discussed in Note 39. The accounting policy applied in 2019 is as follows. Impairment charges are based on an expected loss model which measures the difference between the current carrying amount and the present value of expected future cash flows taking into account past experience, current conditions and multiple probability-weighted macroeconomic scenarios for reasonably supportable future economic conditions. Further details of the calculation of expected credit losses and the critical accounting assumptions and estimates relating to impairment charges are included in Note 13. Impairment charges are recognised in the income statement, with a corresponding amount recognised as follows: ▪ Loans, debt securities at amortised cost and due from subsidiaries balances: as a reduction of the carrying value of the financial asset through an offsetting provision account (refer to Note 13); ▪ Debt securities at FVOCI: in reserves in other comprehensive income with no reduction of the carrying value of the debt security (refer to Note 28); and ▪ Credit commitments: as a provision (refer to Note 27). Uncollectable loans A loan may become uncollectable in full or part if, after following the Group’s loan recovery procedures, the Group remains unable to collect that loan’s contractual repayments. Uncollectable amounts are written off against their related provision for expected credit losses, after all possible repayments have been received. Where loans are secured, amounts are generally written off after receiving the proceeds from the security, or in certain circumstances, where the net realisable value of the security has been determined and this indicates that there is no reasonable expectation of full recovery, write-off may be earlier. Unsecured consumer loans are generally written off after 180 days past due. The Group may subsequently be able to recover cash flows from loans written off. In the period which these recoveries are made, they are recognised in the income statement.
Income tax	The tax expense for the year comprises current and deferred tax. Tax is recognised in the income statement, except to the extent that it relates to items recognised directly in other comprehensive income, in which case it is recognised in the statement of comprehensive income. Current tax is the tax payable for the year using enacted or substantively enacted tax rates and laws for each jurisdiction. Current tax also includes adjustments to tax payable for previous years. Deferred tax accounts for temporary differences between the carrying amounts of assets and liabilities in the financial statements and their values for taxation purposes. Deferred tax is determined using the enacted or substantively enacted tax rates and laws for each jurisdiction which are expected to apply when the assets will be realised or the liabilities settled. Deferred tax assets and liabilities have been offset where they relate to the same taxation authority, the same taxable entity or group, and where there is a legal right and intention to settle on a net basis. Deferred tax assets are recognised to the extent that it is probable that future taxable profits will be available to utilise the assets. Deferred tax is not recognised for the following temporary differences: ▪ the initial recognition of assets or liabilities in a transaction that is not a business combination and that affects neither the accounting nor taxable profit or loss; ▪ the initial recognition of goodwill in a business combination; and ▪ retained earnings in subsidiaries which the Parent Entity does not intend to distribute for the foreseeable future. The Parent Entity is the head entity of a tax consolidated group with its wholly owned, Australian subsidiaries. All entities in the tax consolidated group have entered into a tax sharing agreement which, in the opinion of the Directors, limits the joint and several liabilities in the case of a default by the Parent Entity. Current and deferred tax are recognised using a ‘group allocation basis’. As head entity, the Parent Entity recognises all current tax balances and deferred tax assets arising from unused tax losses and relevant tax credits for the tax-consolidated group. The Parent Entity fully compensates/is compensated by the other members for these balances. Critical accounting assumptions and estimates The Group operates in multiple tax jurisdictions and significant judgement is required in determining the worldwide current tax liability. There are many transactions with uncertain tax outcomes and provisions are determined based on the expected outcomes.
Earnings per share	Basic earnings per share (EPS) is calculated by dividing the net profit attributable to shareholders by the weighted average number of ordinary shares on issue during the year, adjusted for treasury shares. Diluted EPS is calculated by adjusting the basic EPS by assuming all dilutive potential ordinary shares are converted. Refer to Note 19 and Note 33 for further information on the potential dilutive instruments.
Financial Assets and Financial Liabilities	Recognition Purchases and sales by regular way of financial assets, except for loans and receivables, are recognised on trade-date, the date on which the Group commits to purchase or sell the asset. Loans and receivables are recognised on settlement date, when cash is advanced to the borrowers. Financial liabilities are recognised when an obligation arises. Derecognition Financial assets are derecognised when the rights to receive cash flows from the asset have expired, or when the Group has either transferred its rights to receive cash flows from the asset or has assumed an obligation to pay the received cash flows in full under a ‘pass through’ arrangement and transferred substantially all the risks and rewards of ownership. There may be situations where the Group has partially transferred the risks and rewards of ownership but has neither transferred nor retained substantially all the risks and rewards of ownership. In such situations, the asset continues to be recognised on the balance sheet to the extent of the Group’s continuing involvement in the asset. Financial liabilities are derecognised when the obligation is discharged, cancelled or expires. Where an existing financial liability is replaced by another from the same lender on substantially different terms, or the terms of an existing liability are substantially modified, the exchange or modification is treated as a derecognition of the original liability and the recognition of a new liability, with the difference in the respective carrying amounts recognised in the income statement. The terms are deemed to be substantially different if the discounted present value of the cashflows under the new terms (discounted using the original effective interest rate) is at least 10% different from the discounted present value of the remaining cash flows of the original financial liability. Qualitative factors such as a change in the currency the instrument is denominated in, a change in the interest rate from fixed to floating and conversion features are also considered. Classification and measurement As comparatives have not been restated upon the adoption of AASB 9 the accounting policy applied in 2019 differs to that applied in comparative periods. The accounting policy applied in comparative periods is discussed in Note 39. The accounting policy applied in 2019 is as follows. Financial assets are grouped into the following classes: cash and balances with central banks; collateral paid, trading securities and financial assets measured at FVIS, derivative financial instruments, investment securities, loans, other financial assets and life insurance assets. Financial assets Financial assets are classified based on a) the business model within which the assets are managed, and b) whether the contractual cash flows of the instrument represent solely payment of principal and interest (SPPI). The Group determines the business model at the level that reflects how groups of financial assets are managed. When assessing the business model the Group considers factors including how performance and risks are managed, evaluated and reported and the frequency and volume of, and reason for, sales in previous periods and expectations of sales in future periods. When assessing whether contractual cash flows are SPPI, interest is defined as consideration primarily for the time value of money and the credit risk of the principal outstanding. The time value of money is defined as the element of interest that provides consideration only for the passage of time and not consideration for other risks or costs associated with holding the financial asset. Terms that could change the contractual cash flows so that they may not meet the SPPI criteria include contingent and leverage features, non-recourse arrangements, and features that could modify the time value of money. Debt instruments If the debt instruments have contractual cash flows which represent SPPI on the principal balance outstanding they are classified at: ▪ amortised cost if they are held within a business model whose objective is achieved through holding the financial asset to collect these cash flows; or ▪ FVOCI if they are held within a business model whose objective is achieved both through collecting these cash flows or selling the financial asset; or ▪ FVIS if they are held within a business model whose objective is achieved through selling the financial asset. Debt instruments are measured at FVIS where the contractual cash flows do not represent SPPI on the principal balance outstanding or where it is designated at FVIS to eliminate or reduce an accounting mismatch. Debt instruments at amortised cost are initially recognised at fair value and subsequently measured at amortised cost using the effective interest rate method. They are presented net of provisions for expected credit losses determined using the ECL model. Refer to Notes 6 and 13 for further details. Debt instruments at FVOCI are measured at fair value with unrealised gains and losses recognised in other comprehensive income except for interest income, impairment charges and foreign exchange gains and losses, which are recognised in the income statement. Impairment on debt instruments at FVOCI is determined using the ECL model and is recognised in the income statement with a corresponding amount in other comprehensive income. There is no reduction of the carrying value of the debt security which remains at fair value. The cumulative gain or loss recognised in other comprehensive income is subsequently recognised in the income statement when the instrument is derecognised. Debt instruments at FVIS are measured at fair value with subsequent changes in fair value recognised in the income statement. Equity securities Equity securities are measured at FVOCI where they: ▪ are not held for trading; and ▪ an irrevocable election is made by the Group. Otherwise, they are measured at FVIS. Equity securities at FVOCI are measured at fair value with unrealised gains and losses recognised in other comprehensive income, except for dividend income which is recognised in the income statement. The cumulative gain or loss recognised in other comprehensive income is not subsequently recognised in the income statement when the instrument is disposed. Equity securities at FVIS are measured at fair value with subsequent changes in fair value recognised in the income statement. Financial liabilities Financial liabilities are grouped into the following classes: collateral received, deposits and other borrowings, other financial liabilities, derivative financial instruments, debt issues and loan capital. Financial liabilities are measured at amortised cost if they are not held for trading or designated at FVIS, otherwise they are measured at FVIS. Financial assets and financial liabilities measured at fair value through income statement are recognised initially at fair value. All other financial assets and financial liabilities are recognised initially at fair value plus or minus directly attributable transaction costs respectively. Further details of the accounting policy for each category of financial asset or financial liability mentioned above is set out in the note for the relevant item. The Group’s policies for determining the fair value of financial assets and financial liabilities are set out in Note 22.
Trading securities and financial assets designated at fair value	Trading securities Trading securities include actively traded debt (government and other) and equity instruments and those acquired for sale in the near term. As part of its trading activities, the Group also lends and borrows securities on a collateralised basis. Securities lent remain on the Group’s balance sheet and securities borrowed are not reflected on the Group’s balance sheet, as the risk and rewards of ownership remain with the initial holder. Where cash is provided as collateral, the amount advanced to or received from third parties is recognised as a receivable in collateral paid or as a borrowing in collateral received respectively. Reverse repurchase agreements Securities purchased under these agreements are not recognised on the balance sheet, as Westpac has not obtained the risks and rewards of ownership. The cash consideration paid is recognised as a reverse repurchase agreement, which forms part of a trading portfolio that is measured at fair value. Other financial assets measured at FVIS Other financial assets measured at FVIS include: ▪ non-trading securities managed on a fair value basis; ▪ non-trading debt securities that do not have contractual cash flows that represent SPPI on the principal balance outstanding; or ▪ non-trading equity securities for which we have not made irrevocable designation to be measured at FVOCI. Gains and losses on these financial assets are recognised in the income statement. Interest earned from debt securities is recognised in interest income (Note 3) while dividends on equity securities are recognised in non-interest income (Note 4).
Available-for-sale securities / Investment securities	As comparatives have not been restated upon the adoption of AASB 9 the accounting policy applied in 2019 differs to that applied in comparative years. The accounting policy applied in comparative years is discussed in Note 39. The accounting policy applied in 2019 is as follows. Investment securities include debt securities (government and other) and equity securities. It includes debt and equity securities that are measured at FVOCI and debt securities measured at amortised cost. These instruments are classified based on the criteria disclosed under the heading “Financial assets and financial liabilities” prior to Note 10. Debt securities measured at FVOCI Includes debt instruments that have contractual cash flows which represent SPPI on the principal balance outstanding and they are held within a business model whose objective is achieved both through collecting these cash flows or selling the financial asset. These securities are measured at fair value with gains and losses recognised in OCI except for interest income, impairment charges and foreign exchange gains and losses which are recognised in the income statement. Impairment is measured using the same ECL model applied to financial assets measured at amortised cost. Impairment is recognised in the income statement with a corresponding amount in OCI with no reduction of the carrying value of the debt security which remains at fair value. Refer to Note 13 for further details. The cumulative gain or loss recognised in OCI is subsequently recognised in the income statement when the instrument is disposed. Debt securities measured at amortised cost Include debt instruments that have contractual cash flows which represent SPPI on the principal balance outstanding and are held within a business model whose objective is achieved through holding the financial asset to collect these cash flows. These securities are initially recognised at fair value plus directly attributable transaction costs. They are subsequently measured at amortised cost using the effective interest rate method and are presented net of any provisions for ECL. Equity securities Equity securities are measured at FVOCI where they are not held for trading, the Group does not have control or significant influence over the investee and where an irrevocable election is made to measure them at FVOCI. These securities are measured at fair value with unrealised gains and losses recognised in OCI except for dividend income which is recognised in the income statement. The cumulative gain or loss recognised in OCI is not subsequently recognised in the income statement when the instrument is disposed.
Loans	As comparatives have not been restated upon the adoption of AASB 9 the accounting policy applied in 2019 differs to that applied in comparative years. The accounting policy applied in comparative years is discussed in Note 39. The accounting policy applied in 2019 is as follows. Loans are financial assets initially recognised at fair value plus directly attributable transaction costs and fees. Loans are subsequently measured at amortised cost using the effective interest rate method where they have contractual cash flows which represent SPPI on the principal balance outstanding and they are held within a business model whose objective is achieved through holding the loans to collect these cash flows. They are presented net of any provisions for ECL. Loans are subsequently measured at FVIS where they do not have cash flows which represent SPPI, are held within a business model whose objective is achieved by selling the financial asset, or are designated at FVIS to eliminate or reduce an accounting mismatch. Refer to Note 22 for balances which are measured at fair value and amortised cost. Loan products that have both mortgage and deposit facilities are presented gross on the balance sheet, segregating the asset and liability component, because they do not meet the criteria to be offset. Interest earned on these products is presented on a net basis in the income statement as this reflects how the customer is charged.
Provisions for expected credit losses/impairment charges	As comparatives have not been restated upon the adoption of AASB 9 the accounting policy applied in 2019 differs to that applied in comparative years. The accounting policy applied in comparative years is discussed in Note 39. The accounting policy applied in 2019 is as follows. Note 6 provides details of impairment charges. Impairment under AASB 9 applies to all financial assets at amortised cost, lease receivables, debt securities measured at FVOCI and credit commitments. The ECL determined under AASB 9 is recognised as follows: ▪ Loans (including lease receivables), debt securities at amortised cost and due from subsidiaries: as a reduction of the carrying value of the financial asset through an offsetting provision account (refer to Notes 11 and 12); ▪ Debt securities at FVOCI: in reserves in other comprehensive income with no reduction of the carrying value of the debt security itself (refer to Notes 11 and 28); and ▪ Credit commitments: as a provision (refer to Note 27). Measurement The Group calculates the provisions for ECL based on a three stage approach. ECL are a probability-weighted estimate of the cash shortfalls expected to result from defaults over the relevant timeframe. They are determined by evaluating a range of possible outcomes and taking into account the time value of money, past events, current conditions and forecasts of future economic conditions. The models use three main components to determine the ECL (as well as the time value of money) including: ▪ Probability of default (PD): the probability that a counterparty will default; ▪ Loss given default (LGD): the loss that is expected to arise in the event of a default; and ▪ Exposure at default (EAD): the estimated outstanding amount of credit exposure at the time of the default. Model stages The three stages are as follows: Stage 1: 12 months ECL - performing For financial assets where there has been no significant increase in credit risk since origination a provision for 12 months ECL is recognised. Stage 2: Lifetime ECL – performing For financial assets where there has been a significant increase in credit risk since origination but where the asset is still performing a provision for lifetime ECL is recognised. The indicators of a significant increase in credit risk are described on the following page. Stage 3: Lifetime ECL – non-performing For financial assets that are non-performing a provision for lifetime ECL is recognised. Indicators include a breach of contract with the Group such as a default on interest or principal payments, a borrower experiencing significant financial difficulties or observable economic conditions that correlate to defaults on a group of loans. Financial assets in stage 3 are those that are in default. A default occurs when Westpac considers that the customer is unlikely to repay its credit obligations in full, irrespective of recourse by the Group to actions such as realising security, or the customer is more than 90 days past due on any material credit obligation. This definition is aligned to the APRA regulatory definition of default. Collective and individual assessment Financial assets that are in stages 1 and 2 are assessed on a collective basis as are financial assets in stage 3 below specified thresholds. Financial assets that are collectively assessed are grouped in pools of similar assets with similar credit risk characteristics including the type of product and the customer risk grade. Those financial assets in stage 3 above the specified thresholds are assessed on an individual basis. Expected life In considering the lifetime time frame for expected credit losses in stages 2 and 3, the standard generally requires use of the remaining contractual life adjusted where appropriate for prepayments, extension and other options. For certain revolving credit facilities which include both a drawn and undrawn component (e.g. credit cards and revolving lines of credit), the Group’s contractual ability to demand repayment and cancel the undrawn commitment does not limit our exposure to credit losses to the contractual notice period. For these facilities, lifetime is based on historical behaviour. Movement between stages Assets may move in both directions through the stages of the impairment model. Assets previously in stage 2 may move back to stage 1 if it is no longer considered that there has been a significant increase in credit risk. Similarly, assets in stage 3 may move back to stage 1 or stage 2 if they are no longer assessed to be non-performing. Critical accounting assumptions and estimates Key judgements include when a significant increase in credit risk has occurred and estimation of forward looking macroeconomic information. Other factors which can impact the provision include the borrower’s financial situation, the realisable value of collateral, the Group’s position relative to other claimants, the reliability of customer information and the likely cost and duration of recovering the loan. Significant increase in credit risk Determining when a financial asset has experienced a significant increase in credit risk since origination is a critical accounting judgement which is primarily based on changes in internal customer risk grades since origination of the facility. A change in an internal customer risk grade is based on both quantitative and qualitative factors. The change in the internal customer risk grade that the Group uses to represent a significant increase in credit risk is based on a sliding scale. This means that a higher credit quality exposure at origination would require a more significant downgrade compared to a lower credit quality exposure before it is considered to have experienced a significant increase in credit risk. The Group does not rebut the presumption that instruments that are 30 days past due have experienced a significant increase in risk but this is used as a backstop rather than the primary indicator. In addition, retail accounts in hardship are considered to have experienced a significant increase in credit risk. The Group does not apply the low credit risk exemption which assumes investment grade facilities do not have a significant increase in credit risk. Forward looking macroeconomic information The measurement of ECL for each stage and the assessment of significant increase in credit risk consider information about past events and current conditions as well as reasonable and supportable projections of future events and economic conditions. The estimation of forward looking information is a critical accounting judgement. The Group considers three future macroeconomic scenarios including a base case scenario along with upside and downside scenarios. The macroeconomic variables used in these scenarios, based on current economic forecasts, include (but are not limited to) unemployment rates, real gross domestic product growth rates and residential and commercial property price indices. ▪ Base case scenario This scenario utilises the internal Westpac economics forecast used for strategic decision making and forecasting. ▪ Upside scenario This scenario represents a modest improvement on the base case scenario. ▪ Downside scenario This scenario represents a moderate recession. The macroeconomic scenarios are weighted based on the Group’s best estimate of the relative likelihood of each scenario. The weighting applied to each of the three macroeconomic scenarios takes into account historical frequency, current trends, and forward looking conditions. The macroeconomic variables and probability weightings of the three macroeconomic scenarios are subject to the approval of the Group Chief Financial Officer and Chief Risk Officer with oversight from the Board of Directors (and its Committees). Where appropriate, adjustments will be made to modelled outcomes to reflect reasonable and supportable information not already incorporated in the models. Judgements can change with time as new information becomes available which could result in changes to the provision for expected credit losses.
Life insurance assets and life insurance liabilities	The Group conducts its life insurance business in Australia primarily through Westpac Life Insurance Services Limited and separate statutory funds registered under the Life Insurance Act 1995 (Life Act) and in New Zealand through Westpac Life-NZ-Limited which are separate statutory funds licensed under the Insurance (Prudential Supervision) Act 2010. Life insurance assets Life insurance assets, including investments in funds managed by the Group, are designated at FVIS. Changes in fair value are recognised in non-interest income. The determination of fair value of life insurance assets involves the same judgements as other financial assets, which are described in the critical accounting assumptions and estimates in Note 22. The Life Act places restrictions on life insurance assets, including that they can only be used: ▪ to meet the liabilities and expenses of that statutory fund; ▪ to acquire investments to further the business of the statutory fund; or ▪ as a distribution, when the statutory fund has met its solvency and capital adequacy requirements. Life insurance liabilities Life insurance liabilities primarily consist of life investment contract liabilities and life insurance contract liabilities. Claims incurred in respect of life investment contracts are withdrawals of customer deposits, and are recognised as a reduction in life insurance liabilities. Life investment contract liabilities Life investment contract liabilities are designated at FVIS. Fair value is the higher of the valuation of life insurance assets linked to the life investment contract, or the minimum current surrender value (the minimum amount the Group would pay to a policyholder if their policy is voluntarily terminated before it matures or the insured event occurs). Changes in fair value are recognised in non-interest income. Life insurance contract liabilities The value of life insurance contract liabilities is calculated using the margin on services methodology (MoS), specified in the Prudential Standard LPS 340 Valuation of Policy Liabilities. MoS accounts for the associated risks and uncertainties of each type of life insurance contract written. At each reporting date, planned profit margins and an estimate of future liabilities are calculated. Profit margins are released to non-interest income over the period that life insurance is provided to policyholders (Note 4). The cost incurred in acquiring specific insurance contracts is deferred provided that these amounts are recoverable out of planned profit margins. The deferred amounts are recognised as a reduction in life insurance policy liabilities and are amortised to non-interest income over the same period as the planned profit margins. External unit holder liabilities of managed investment schemes The life insurance statutory funds include controlling interests in managed investment schemes which are consolidated. When the managed investment scheme is consolidated, the external unit holder liabilities are recognised as a liability and included in life insurance liabilities. They are designated at FVIS. Critical accounting assumptions and estimates The key factors that affect the estimation of life insurance liabilities and related assets are: ▪ the cost of providing benefits and administering contracts; ▪ mortality and morbidity experience, which includes policyholder benefits enhancements; ▪ discontinuance rates, which affects the Group’s ability to recover the cost of acquiring new business over the life of the contracts; and ▪ the discount rate of projected future cash flows. Regulation, competition, interest rates, taxes, securities market conditions and general economic conditions also affect the estimation of life insurance liabilities.
Deposits and other borrowings	Deposits and other borrowings are initially recognised at fair value and subsequently either measured at amortised cost using the effective interest rate method or at fair value. Deposits and other borrowings are designated at fair value if they are managed on a fair value basis, reduce or eliminate an accounting mismatch or contain an embedded derivative. Where they are measured at fair value, any changes in fair value (except those due to changes in credit risk) are recognised as non-interest income. The change in the fair value that is due to changes in credit risk is recognised in other comprehensive income except where it would create an accounting mismatch, in which case it is also recognised in the income statement. Refer to Note 22 for balances measured at fair value and amortised cost. Interest expense incurred is recognised in net interest income using the effective interest rate method.
Other financial liabilities	Other financial liabilities include liabilities measured at amortised cost as well as liabilities which are measured at FVIS. Financial liabilities measured at FVIS include: ▪ trading liabilities (i.e. securities sold short); and ▪ liabilities designated at fair value through income statement (i.e. certain repurchase agreements). Refer to Note 22 for balances measured at fair value and amortised cost. Repurchase agreements Where securities are sold subject to an agreement to repurchase at a predetermined price, they remain recognised on the balance sheet in their original category (i.e. ‘Trading securities’ or ‘Investment securities’). The cash consideration received is recognised as a liability (‘Repurchase agreements’). Repurchase agreements are designated at fair value where they are managed as part of a trading portfolio, otherwise they are measured on an amortised cost basis. Where a repurchase agreement is designated at fair value, subsequent to initial recognition, these liabilities are measured at fair value with changes in fair value (except credit risk) recognised through the income statement as they arise. The change in fair value that is attributable to credit risk is recognised in other comprehensive income except where it would create an accounting mismatch, in which case it is also recognised through the income statement.
Debt issues	Debt issues are bonds, notes, commercial paper and debentures that have been issued by entities in the Group. Debt issues are initially measured at fair value and subsequently either measured at amortised cost using the effective interest rate method or at fair value. Debt issues are designated at fair value if they reduce or eliminate an accounting mismatch or contain an embedded derivative. The change in the fair value that is due to credit risk is recognised in other comprehensive income except where it would create an accounting mismatch, in which case it is also recognised in non-interest income. Refer to Note 22 for balances measured at fair value and amortised cost. Interest expense incurred is recognised within net interest income using the effective interest rate method.
Loan Capital	Loan capital are instruments issued by the Group which qualify for inclusion as regulatory capital under Australian Prudential Regulation Authority (APRA) Prudential Standards. Loan capital is initially measured at fair value and subsequently measured at amortised cost using the effective interest rate method. Interest expense incurred is recognised in net interest income.
Derivative financial instruments	Derivative financial instruments are instruments whose values are derived from the value of an underlying asset, reference rate or index and include forwards, futures, swaps and options. The Group uses derivative financial instruments for meeting customers’ needs, our asset and liability risk management activities (ALM), and undertaking market making and positioning activities. Trading derivatives Derivatives which are used in our ALM activities but are not designated into a hedge accounting relationship are considered economic hedges, and are adjusted for cash earnings purposes due to the accounting mismatch between the fair value of the derivatives and the accounting treatment of the underlying exposure (refer to Note 2 for further details). These derivatives, along with derivatives used for meeting customers’ needs and undertaking market making and positioning activities, are measured at FVIS and are disclosed as trading derivatives. Hedging derivatives Hedging derivatives are those which are used in our ALM activities and have also been designated into one of three hedge accounting relationships: fair value hedge; cash flow hedge; or hedge of a net investment in a foreign operation. These derivatives are measured at fair value. These hedge designations and the associated accounting treatment are detailed below. For more details regarding the Group’s asset and liability risk management activities, refer to Note 21. Fair value hedges Fair value hedges are used to hedge the exposure to changes in the fair value of an asset or liability. Changes in the fair value of derivatives and the hedged asset or liability in fair value hedges are recognised in interest income. The carrying value of the hedged asset or liability is adjusted for the changes in fair value related to the hedged risk. If a hedge is discontinued, any fair value adjustments to the carrying value of the asset or liability are amortised to net interest income over the period to maturity. If the asset or liability is sold, any unamortised adjustment is immediately recognised in net interest income. Cash flow hedges Cash flow hedges are used to hedge the exposure to variability of cash flows attributable to an asset, liability or future forecast transaction. For effective hedges, changes in the fair value of derivatives are recognised in the cash flow hedge reserve through other comprehensive income and subsequently recognised in interest income when the cash flows attributable to the asset or liability that was hedged impact the income statement. For hedges with some ineffectiveness, the changes in the fair value of the derivatives relating to the ineffective portion are immediately recognised in interest income. If a hedge is discontinued, any cumulative gain or loss remains in other comprehensive income. It is amortised to net interest income over the period which the asset or liability that was hedged also impacts the income statement. If a hedge of a forecast transaction is no longer expected to occur, any cumulative gain or loss in other comprehensive income is immediately recognised in net interest income. Net investment hedges Net investment hedges are used to hedge foreign exchange risks arising from a net investment of a foreign operation. For effective hedges, changes in the fair value of derivatives are recognised in the foreign currency translation reserve through other comprehensive income. For hedges with some ineffectiveness, the changes in the fair value of the derivatives relating to the ineffective portion are immediately recognised in non-interest income. If a foreign operation is disposed of, any cumulative gain or loss in other comprehensive income is immediately recognised in non-interest income.
Fair values of financial assets and financial liabilities	The fair value of a financial instrument is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. On initial recognition, the transaction price generally represents the fair value of the financial instrument unless there is observable information from an active market to the contrary. Where unobservable information is used, the difference between the transaction price and the fair value (day one profit or loss) is recognised in the income statement over the life of the instrument when the inputs become observable. Critical accounting assumptions and estimates The majority of valuation models used by the Group employ only observable market data as inputs. However, for certain financial instruments data may be employed which is not readily observable in current markets. The availability of observable inputs is influenced by factors such as: ▪ product type; ▪ depth of market activity; ▪ maturity of market models; and ▪ complexity of the transaction. Where unobservable market data is used, more judgement is required to determine fair value. The significance of these judgements depends on the significance of the unobservable input to the overall valuation. Unobservable inputs are generally derived from other relevant market data and adjusted against: ▪ standard industry practice; ▪ economic models; and ▪ observed transaction prices. In order to determine a reliable fair value for a financial instrument, management may apply adjustments to the techniques previously described. These adjustments reflect the Group’s assessment of factors that market participants would consider in setting the fair value. These adjustments incorporate bid/offer spreads, credit valuation adjustments and funding valuation adjustments.
Offsetting financial assets and financial liabilities	Financial assets and liabilities are presented net in the balance sheet when the Group has a legally enforceable right to offset them in all circumstances and there is an intention to settle the asset and liability on a net basis, or to realise the asset and settle the liability simultaneously. The gross assets and liabilities behind the net amounts reported in the balance sheet are disclosed in the table below.
Intangible assets	Indefinite life intangible assets Goodwill Goodwill acquired in a business combination is initially measured at cost, generally being the excess of: (i) the consideration paid; over (ii) the net fair value of the identifiable assets, liabilities and contingent liabilities acquired. Subsequently, goodwill is not amortised but rather tested for impairment. Impairment is tested at least annually or whenever there is an indication of impairment. An impairment charge is recognised when a cash generating unit’s (CGU) carrying value exceeds its recoverable amount. Recoverable amount means the higher of the CGU’s fair value less costs to sell and its value-in-use. Brand names Brand names acquired in a business combination including St.George, BT, BankSA and RAMS, are recognised at cost. Subsequently brand names are not amortised but tested for impairment at least annually or whenever there is an indication of impairment. Finite life intangible assets Finite life intangibles including computer software and core deposits, are recognised initially at cost and subsequently at amortised cost less any impairment. Intangible Useful life Depreciation method Goodwill Indefinite Not applicable Brand names Indefinite Not applicable Computer software 3 to 10 years Straight-line or the diminishing balance method (using the Sum of the Years Digits) Core deposit intangibles 9 years Straight-line Critical accounting assumptions and estimates Judgement is required in determining the fair value of assets and liabilities acquired in a business combination. A different assessment of fair values would have resulted in a different goodwill balance and different post-acquisition performance of the acquired entity. When assessing impairment of intangible assets, significant judgement is needed to determine the appropriate cash flows and discount rates to be applied to the calculations. The significant assumptions applied to the value-in-use calculations are outlined below.
Provisions, contingent liabilities, contingent assets and credit commitments	Provisions Provisions are recognised for present obligations arising from past events where a payment (or other economic transfer) is likely to be necessary to settle the obligation and can be reliably estimated. Employee benefits – long service leave provision Long service leave must be granted to employees in Australia and New Zealand. The provision is calculated based on the expected payments. When payments are expected to be more than one year in the future, the payments factor in expected employee service periods and average salary increases which are then discounted. Employee benefits – annual leave and other employee benefits provision The provision for annual leave and other employee benefits (including wages and salaries, inclusive of non-monetary benefits, and any associated on-costs (e.g. payroll tax)) is calculated based on expected payments. Provision for impairment on credit commitments The Group is committed to provide facilities and guarantees as explained below. If it is probable that a facility will be drawn and the resulting asset will be less than the drawn amount then a provision for impairment is recognised. The provision for impairment is calculated using the same methodology as the provision for expected credit losses (refer to Note 13). Compliance, Regulation and Remediation provisions The compliance, regulation and remediation provisions relate to matters of potential misconduct in providing services to our customers identified both as a result of regulatory action and internal reviews. An assessment of the likely cost to the Group of these matters (including applicable customer refunds) is made on a case-by-case basis and specific provisions are made where appropriate. Contingent liabilities Contingent liabilities are possible obligations whose existence will be confirmed only by uncertain future events, and present obligations where the transfer of economic resources is not probable or cannot be reliably measured. Contingent liabilities are not recognised on the balance sheet but are disclosed unless the outflow of economic resources is remote. Undrawn credit commitments The Group enters into various arrangements with customers which are only recognised in the balance sheet when called upon. These arrangements include commitments to extend credit, bill endorsements, financial guarantees, standby letters of credit and underwriting facilities. Contingent assets Contingent assets are possible assets whose existence will be confirmed only by uncertain future events. Contingent assets are not recognised on the balance sheet but are disclosed if an inflow of economic benefits is probable. Critical accounting assumptions and estimates The financial reporting of provisions for litigation and non-lending losses and for compliance, regulation and remediation matters involves a significant degree of judgement in relation to identifying whether a present obligation exists and also in estimating the probability, timing, nature and quantum of the outflows that may arise from past events. These judgements are made based on the specific facts and circumstances relating to individual events. Specific judgements in respect of material items are included in the discussion below. Provisions carried for long service leave are supported by an independent actuarial report.
Shareholders' equity	Share capital Ordinary shares are recognised at the amount paid up per ordinary share net of directly attributable issue costs. Treasury shares are shares in the Parent Entity, purchased by the Parent Entity or other entities within the Group. These shares are adjusted against share capital as the net of the consideration paid to purchase the shares and, where applicable, any consideration received from the subsequent sale or reissue of these shares. Non-controlling interests Non-controlling interests represent the share in the net assets of subsidiaries attributable to equity interests that are not owned directly or indirectly by the Parent Entity. Reserves Foreign currency translation reserve Exchange differences arising on translation of the Group’s foreign operations, and any offsetting gains or losses on hedging the net investment are reflected in the foreign currency translation reserve. A cumulative credit balance in this reserve would not normally be regarded as being available for payment of dividends until such gains are realised and recognised in the income statement on sale or disposal of the foreign operation. Debt securities at FVOCI reserve (30 September 2019 - AASB 9) This reserve was established on adoption of AASB 9 and comprises the changes in fair value of debt securities measured at fair value through other comprehensive income (except for interest income, impairment charges and foreign exchange gains and losses which are recognised in the income statement), net of any related hedge accounting adjustments and tax. These changes are transferred to non-interest income in the income statement when the asset is disposed. Equity securities at FVOCI reserve (30 September 2019 - AASB 9) This reserve was established on adoption of AASB 9 and comprises the changes in fair value of equity securities measured at fair value through other comprehensive income, net of tax. These changes are not transferred to the income statement when the asset is disposed. Available-for-sale securities reserve (30 September 2018 - AASB 139) This comprises the changes in the fair value of available-for-sale financial securities (including both debt and equity securities), net of any related hedge accounting adjustments and tax. These changes were transferred to non-interest income in the income statement when the asset is either disposed of or impaired. This reserve was closed on the adoption of AASB 9 and the closing balance was allocated to the debt securities at FVOCI reserve and equity securities at FVOCI reserve noted above for the relevant securities. Cash flow hedge reserve This comprises the fair value gains and losses associated with the effective portion of designated cash flow hedging instruments, net of tax. Share-based payment reserve This comprises the fair value of equity-settled share-based payments recognised as an expense. Other reserves Other reserves for the Parent Entity relates to certain historic internal group restructurings performed at fair value. The reserve is eliminated on consolidation. Other reserves for the Group consist of transactions relating to changes in the Parent Entity’s ownership of a subsidiary that do not result in a loss of control. The amount recorded in other reserves reflects the difference between the amount by which non-controlling interests are adjusted and the fair value of any consideration paid or received.
Investments in subsidiaries and associates	Subsidiaries Westpac’s subsidiaries are entities which it controls and consolidates as it is exposed to, or has rights to, variable returns from the entity, and can affect those returns through its power over the entity. When the Group ceases to control a subsidiary, any retained interest in the entity is remeasured to fair value, with any resulting gain or loss recognised in the income statement. Changes in the Group’s ownership interest in a subsidiary which do not result in a loss of control are accounted for as transactions with equity holders in their capacity as equity holders. In the Parent Entity’s financial statements, investments in subsidiaries are initially recorded at cost and are subsequently held at the lower of cost and recoverable amount. All transactions between Group entities are eliminated on consolidation. Associates Associates are entities in which the Group has significant influence, but not control, over the operating and financial policies. The Group accounts for associates using the equity method. The investments are initially recognised at cost (except where recognised at fair value due to a loss of control of a subsidiary), and increased (or decreased) each year by the Group’s share of the associate’s profit (or loss). Dividends received from the associate reduce the investment in associate.
Structured entities	Structured entities are generally created to achieve a specific, defined objective and their operations are restricted such as only purchasing specific assets. Structured entities are commonly financed by debt or equity securities that are collateralised by and/or indexed to their underlying assets. The debt and equity securities issued by structured entities may include tranches with varying levels of subordination. Structured entities are classified as subsidiaries and consolidated if they meet the definition in Note 31. If the Group does not control a structured entity then it will not be consolidated.
Share-based payments	The Group enters into various share-based payment arrangements with its employees as a component of overall compensation for services provided. Share-based payment arrangements comprise options to purchase shares at a pre-determined price (share options), rights to receive shares for free (share rights) and restricted shares (issued at no cost). Share-based payment arrangements typically require a specified period of continuing employment (the service period or vesting period) and may include performance targets (vesting conditions). Specific details of each arrangement are provided below. Share-based payments must be classified as either cash-settled or equity-settled arrangements. The Group’s significant arrangements are equity-settled, as the Group is not obliged to settle in cash. Options and share rights Options and share rights are equity-settled arrangements. The fair value is measured at grant date and is recognised as an expense over the service period, with a corresponding increase in the share-based payment reserve in equity. The fair value of share options and share rights is estimated at grant date using a binomial/Monte Carlo simulation pricing model which incorporates the vesting and market-related performance targets of the grants. The fair value of share options and rights excludes non-market vesting conditions such as employees’ continuing employment by the Group. The non-market vesting conditions are instead incorporated in estimating the number of share options and rights that are expected to vest and are therefore recognised as an expense. At each reporting date the non-market vesting assumptions are revised and the expense recognised each year takes into account the most recent estimates. The market-related assumptions are not revised each year as the fair value is not re-estimated after the grant date. Restricted share plan (RSP) The RSP is accounted for as an equity-settled arrangement. The fair value of shares allocated to employees for nil consideration is recognised as an expense over the vesting period with a corresponding increase in the share-based payments reserve in equity. The fair value of ordinary shares issued to satisfy the obligation to employees is measured at grant date and is recognised as a separate component of equity. Employee share plan (ESP) The value of shares expected to be allocated to employees for nil consideration is recognised as an expense over the financial year and provided for as other employee benefits. The fair value of any ordinary shares issued to satisfy the obligation to employees is recognised in equity. Alternatively, shares may be purchased on market to satisfy the obligation to employees.
Superannuation commitments	The Group recognises an asset or a liability for its defined benefit schemes, being the net of the defined benefit obligations and the fair value of the schemes’ assets. The defined benefit obligation is calculated as the present value of the estimated future cash flows, discounted using high-quality long dated corporate bond rates. The superannuation expense is recognised in operating expenses and remeasurements are recognised through other comprehensive income. Critical accounting assumptions and estimates The actuarial valuation of plan obligations is dependent upon a series of assumptions, principally price inflation, salary growth, mortality, morbidity, discount rate and investment returns. Different assumptions could significantly alter the valuation of the plan assets and obligations and the superannuation cost recognised in the income statement.
Notes to the cash flow statements	Cash and balances with central banks include cash held at branches and in ATMs, balances with overseas banks in their local currency and balances with central banks including accounts with the RBA and accounts with overseas central banks.
Accounting policy relating to impairment (Note 6 and Note 13)	Impairment charges (Note 6) At each balance sheet date, the Group assesses whether there is any objective evidence of impairment of its loan portfolio. An impairment charge is recognised if there is objective evidence that the principal or interest repayments may not be recoverable and when the financial impact of the non-recoverable loan can be reliably measured. Objective evidence of impairment could include a breach of contract with the Group such as a default on interest or principal payments, a borrower experiencing significant financial difficulties or observable economic conditions that correlate to defaults on a group of loans. The impairment charge is measured as the difference between the loan’s current carrying amount and the present value of its estimated future cash flows. The estimated future cash flows exclude any expected future credit losses which have not yet occurred and are discounted to their present value using the loan’s original effective interest rate. If a loan has a variable interest rate, the discount rate for measuring any impairment is the current effective interest rate. The impairment charge is recognised in the income statement with a corresponding reduction of the carrying value of the loan through an offsetting provision account (refer to Note 13). In subsequent periods, objective evidence may indicate that an impairment charge should be reversed. Objective evidence could include a borrower’s credit rating or financial circumstances improving. The impairment charge is reversed in the income statement of that future period and the related provision for impairment is reduced. Uncollectable loans The policy for uncollectible loans is consistent with that applicable to 2019 based on AASB 9. Provision for impairment charges (Note 13) The Group recognises two types of impairment provisions for its loans, being provisions for loans which are: ▪ individually assessed for impairment; and ▪ collectively assessed for impairment. The Group assesses impairment as follows: ▪ individually for loans that exceed specified thresholds. Where there is objective evidence of impairment, individually assessed provisions will be recognised; and ▪ collectively for loans below the specified thresholds noted above or if there is no objective evidence of impairment. These loans are included in a group of loans with similar risk characteristics and collectively assessed for impairment. If there is objective evidence that the group of loans is collectively impaired, collectively assessed provisions will be recognised. Critical accounting assumptions and estimates The methodology and assumptions used for estimating future cash flows are reviewed regularly by the Group to reduce differences between impairment provisions and actual loss experience. Individual component Key judgements include the business prospects for the customer, the realisable value of collateral, the Group’s position relative to other claimants, the reliability of customer information and the likely cost and duration of recovering the loan. Judgements can change with time as new information becomes available or as loan recovery strategies evolve, which may result in revisions to the impairment provision. Collective component Collective provisions are established on a portfolio basis taking into account the level of arrears, collateral and security, past loss experience, current economic conditions, expected default and timing of recovery based on portfolio trends. Key judgements include estimated loss rates and their related emergence periods. The emergence period for each loan type is determined through studies of loss emergence patterns. Loan files are reviewed to identify the average time period between observable loss indicator events and the loss becoming identifiable. Actual credit losses may differ materially from reported loan impairment provisions due to uncertainties including interest rates and their effect on consumer spending, unemployment levels, payment behaviour and bankruptcy rates.
Accounting policy relating to classification and measurement of financial instruments (Note 10, Note 11 and Note 12)	Classification and measurement of financial assets and financial liabilities (Policy prior to Note 10) The Group classifies its financial assets in the following categories: cash and balances with central banks, receivables due from financial institutions, trading securities and financial assets designated at fair value, derivative financial instruments, available-for-sale securities, loans, life insurance assets and regulatory deposits with central banks overseas. The Group has not classified any of its financial assets as held-to-maturity investments. The Group classifies significant financial liabilities in the following categories: payables due to other financial institutions, deposits and other borrowings, other financial liabilities at fair value through income statement, derivative financial instruments, debt issues and loan capital. Financial assets and financial liabilities measured at fair value through income statement are recognised initially at fair value. All other financial assets and financial liabilities are recognised initially at fair value plus directly attributable transaction costs. Available-for-sale securities (Note 11) Available-for-sale debt securities (government and other) and equity securities are held at fair value with gains and losses recognised in other comprehensive income (OCI) except for interest on debt securities, dividends on equity securities, and impairment charges which are recognised in the income statement. The cumulative gain or loss recognised in OCI is subsequently recognised in the income statement when the instrument is disposed. At each reporting date, the Group assesses whether any available-for-sale securities are impaired. Impairment exists if one or more events have occurred which have a negative impact on the security's estimated cash flows. For debt instruments, evidence of impairment includes significant financial difficulties or adverse changes in the payment status of an issuer. For equity securities, a significant or prolonged decline in the fair value of the security below its cost is considered evidence of impairment. If impairment exists, the cumulative loss is removed from OCI and recognised in the income statement. Any subsequent reversals of impairment on debt securities are also recognised in the income statement. Subsequent reversal of impairment charges on equity instruments is not recognised in the income statement until the instrument is disposed. Loans (Note 12) Loans are financial assets initially recognised at fair value plus directly attributable transaction costs and fees. Loans are subsequently measured at amortised cost using the effective interest rate method and are presented net of any provisions for impairment charges except for a portfolio of loans which are subsequently measured at fair value to reduce an accounting mismatch.

Financial statements preparat_3

Financial statements preparation (Tables)	12 Months Ended
	Sep. 30, 2019
Financial statements preparation
Schedule of voluntary presentation changes in balance sheet	Consolidated Parent Entity Presentation Presentation $m Reported changes Restated Reported changes Restated Assets Cash and balances with central banks 26,431 357 26,788 24,726 250 24,976 Receivables due from other financial institutions 5,790 (5,790) — 5,711 (5,711) — Collateral paid — 4,787 4,787 — 4,722 4,722 Trading securities and financial assets measured at FVIS 22,134 998 23,132 20,417 998 21,415 Regulatory deposits with central banks overseas 1,355 (1,355) — 1,248 (1,248) — Other financial assets 1 — 5,517 5,517 — 4,666 4,666 Other assets 5,135 (4,514) 621 3,988 (3,677) 311 All other assets 818,747 — 818,747 867,140 — 867,140 Total assets 879,592 — 879,592 923,230 — 923,230 Liabilities Payables due to other financial institutions 18,137 (18,137) — 17,682 (17,682) — Collateral received — 2,184 2,184 — 1,748 1,748 Other financial liabilities at FVIS 4,297 (4,297) — 4,297 (4,297) — Other financial liabilities 1 — 28,105 28,105 — 27,266 27,266 Other liabilities 9,193 (7,855) 1,338 7,292 (7,035) 257 All other liabilities 783,392 — 783,392 838,603 — 838,603 Total liabilities 815,019 — 815,019 867,874 — 867,874 1. Refer to Note 14 and Note 17 for further information.
Schedule of voluntary presentation changes in net interest income	Consolidated 2018 Consolidated 2017 Parent Entity 2018 Presentation Presentation Presentation $m Reported changes Restated Reported changes Restated Reported changes Restated Note 3: Net interest income Interest income Cash and balances with central banks 325 1 326 241 1 242 300 1 301 Receivables due from other financial institutions 108 (108) — 110 (110) — 102 (102) — Collateral paid — 129 129 — 96 96 — 126 126 Net ineffectiveness on qualifying hedges (18) — (18) (22) — (22) (22) — (22) Trading securities and financial assets measured at FVIS 542 22 564 558 16 574 499 22 521 Available-for-sale securities 1,914 — 1,914 1,795 — 1,795 1,743 — 1,743 Investment securities — — — — — — — — — Loans 29,621 — 29,621 28,504 — 28,504 25,801 — 25,801 Regulatory deposits with central banks overseas 23 (23) — 17 (17) — 23 (23) — Due from subsidiaries — — — — — — 4,328 — 4,328 Other interest income 56 (21) 35 29 14 43 56 (24) 32 Total interest income 32,571 — 32,571 31,232 — 31,232 32,830 — 32,830 Interest expense Payable due to other financial institutions (319) 319 — (279) 279 — (314) 314 — Collateral received — (45) (45) — (19) (19) — (41) (41) Deposits and other borrowings (9,021) — (9,021) (8,868) — (8,868) (7,817) — (7,817) Trading liabilities (959) — (959) (2,065) — (2,065) (754) — (754) Debt issues (4,480) — (4,480) (3,585) — (3,585) (3,958) — (3,958) Due to subsidiaries — — — — — — (4,851) — (4,851) Loan capital (774) — (774) (693) — (693) (774) — (774) Bank levy (378) — (378) (95) — (95) (378) — (378) Other interest expense (135) (274) (409) (131) (260) (391) (131) (273) (404) Total interest expense (16,066) — (16,066) (15,716) — (15,716) (18,977) — (18,977) Net interest income 16,505 — 16,505 15,516 — 15,516 13,853 — 13,853
Schedule of voluntary presentation changes in non-interest income and operating expenses	Consolidated 2018 Consolidated 2017 Parent Entity 2018 Presentation Presentation Presentation $m Reported changes Restated Reported changes Restated Reported changes Restated Income statement Net interest income 16,505 — 16,505 15,516 — 15,516 13,853 — 13,853 Non-interest income 5,628 (5,628) — 6,286 (6,286) — 5,825 (5,825) — Net fee income — 2,424 2,424 — 2,603 2,603 — 2,172 2,172 Net wealth management and insurance income — 2,061 2,061 — 1,800 1,800 — — — Trading income — 945 945 — 1,202 1,202 — 919 919 Other income — 72 72 — 529 529 — 2,633 2,633 Net operating income before operating expenses and impairment charges 22,133 (126) 22,007 21,802 (152) 21,650 19,678 (101) 19,577 Operating expenses (9,692) 126 (9,566) (9,434) 152 (9,282) (8,101) 101 (8,000) Impairment charges (710) — (710) (853) — (853) (682) — (682) Profit before income tax 11,731 — 11,731 11,515 — 11,515 10,895 — 10,895 Income tax expense (3,632) — (3,632) (3,518) — (3,518) (2,751) — (2,751) Net profit for the year 8,099 — 8,099 7,997 — 7,997 8,144 — 8,144 Note 4: Non-interest income (extract) Net fee income Facility fees 1,347 18 1,365 1,333 17 1,350 1,333 18 1,351 Transaction fees 1,105 77 1,182 1,193 65 1,258 886 53 939 Other non-risk fee income 98 — 98 229 — 229 54 — 54 Fee income 2,550 95 2,645 2,755 82 2,837 2,273 71 2,344 Credit card loyalty programs — (126) (126) — (152) (152) — (101) (101) Transaction fee related expenses — (95) (95) — (82) (82) — (71) (71) Fee expenses — (221) (221) — (234) (234) — (172) (172) Net fee income 2,550 (126) 2,424 2,755 (152) 2,603 2,273 (101) 2,172 Note 5: Operating expenses (extract) Credit card loyalty programs 126 (126) — 152 (152) — 101 (101) — Total other expenses 1,662 (126) 1,536 1,652 (152) 1,500 1,357 (101) 1,256 Total operating expenses 9,692 (126) 9,566 9,434 (152) 9,282 8,101 (101) 8,000
Schedule of impact of the adoption of AASB 9 on impairment balances	Provisions on debt Loss allowance securities and Provisions for on debt other financial Consolidated Provisions credit securities at assets at $m on loans commitments FVOCI 1 amortised cost Total 30 September 2018 - carrying amount 2,814 239 — — 3,053 ECL on amortised cost financial instruments 882 98 — 9 989 ECL on debt securities measured at FVOCI — — 2 — 2 1 October 2018 - AASB 9 carrying amount 3,696 337 2 9 4,044 Provisions on debt Loss allowance securities and Provisions for on debt other financial Parent Entity Provisions credit securities at assets at $m on loans commitments FVOCI 1 amortised cost Total 30 September 2018 - carrying amount 2,407 206 — — 2,613 ECL on amortised cost financial instruments 751 95 — — 846 ECL on debt securities measured at FVOCI — — 2 — 2 1 October 2018 - AASB 9 carrying amount 3,158 301 2 — 3,461 1. Impairment on debt securities at FVOCI is recognised in the income statement with a corresponding amount in other comprehensive income (refer to Note 28). There is no reduction of the carrying value of the debt security which remains at fair value.
Schedule of change in measurement of financial assets and financial liabilities	30 September 2018 1 October 2018 AASB 139 measurement basis AASB 9 measurement basis Change in measurement Consolidated Amortised basis under Amortised $m cost FVIS FVOCI Total AASB 9 cost FVIS FVOCI Total Financial assets Cash and balances with central banks 26,788 — — 26,788 No 26,788 — — 26,788 Collateral paid 4,787 — — 4,787 No 4,787 — — 4,787 Trading securities and financial assets measured at FVIS — 23,132 — 23,132 No — 23,132 — 23,132 Derivative financial instruments — 24,101 — 24,101 No — 24,101 — 24,101 Available-for-sale securities — — 61,119 61,119 Yes 811 275 60,033 61,119 Loans 1 709,144 546 — 709,690 Yes 709,088 602 — 709,690 Other financial assets 5,517 — — 5,517 No 5,517 — — 5,517 Life insurance assets — 9,450 — 9,450 No — 9,450 — 9,450 Total financial assets 746,236 57,229 61,119 864,584 746,991 57,560 60,033 864,584 Financial liabilities Collateral received 2,184 — — 2,184 No 2,184 — — 2,184 Deposits and other borrowings 518,107 41,178 — 559,285 No 518,107 41,178 — 559,285 Other financial liabilities 23,808 4,297 — 28,105 No 23,808 4,297 — 28,105 Derivative financial instruments — 24,407 — 24,407 No — 24,407 — 24,407 Debt issues 169,241 3,355 — 172,596 No 169,241 3,355 — 172,596 Life insurance liabilities — 7,597 — 7,597 No — 7,597 — 7,597 Loan capital 17,265 — — 17,265 No 17,265 — — 17,265 Total financial liabilities 730,605 80,834 — 811,439 730,605 80,834 — 811,439 30 September 2018 1 October 2018 AASB 139 measurement basis AASB 9 measurement basis Change in measurement Parent Entity Amortised basis under Amortised $m cost FVIS FVOCI Total AASB 9 cost FVIS FVOCI Total Financial assets Cash and balances with central banks 24,976 — — 24,976 No 24,976 — — 24,976 Collateral paid 4,722 — — 4,722 No 4,722 — — 4,722 Trading securities and financial assets measured at FVIS — 21,415 — 21,415 No — 21,415 — 21,415 Derivative financial instruments — 23,562 — 23,562 No — 23,562 — 23,562 Available-for-sale securities — — 56,513 56,513 Yes 10 — 56,503 56,513 Loans 1 629,622 546 — 630,168 Yes 629,566 602 — 630,168 Other financial assets 4,666 — — 4,666 No 4,666 — — 4,666 Due from subsidiaries 2,3 133,808 278 — 134,086 No 133,808 278 — 134,086 Total financial assets 797,794 45,801 56,513 900,108 797,748 45,857 56,503 900,108 Financial liabilities Collateral received 1,748 — — 1,748 No 1,748 — — 1,748 Deposits and other borrowings 460,406 40,062 — 500,468 No 460,406 40,062 — 500,468 Other financial liabilities 22,969 4,297 — 27,266 No 22,969 4,297 — 27,266 Derivative financial instruments — 24,229 — 24,229 No — 24,229 — 24,229 Debt issues 149,065 3,223 — 152,288 No 149,065 3,223 — 152,288 Due to subsidiaries 4 141,877 523 — 142,400 No 141,877 523 — 142,400 Loan capital 17,265 — — 17,265 No 17,265 — — 17,265 Total financial liabilities 793,330 72,334 — 865,664 793,330 72,334 — 865,664 1. As at 30 September 2018, loans at amortised cost were restated from $706,440 million to $709,144 million for the Group, and from $626,918 million to $629,622 million for the Parent Entity. Loans at FVIS were also restated from $3,250 million to $546 million for both the Group and the Parent Entity. 2. Due from subsidiaries excludes $6,511 million of long-term debt instruments with equity like characteristics which are part of the total investment in subsidiaries. 3. Comparatives have been restated to reclassify $278 million from amortised cost to FVIS. 4. Comparatives have been restated to reclassify $523 million from amortised cost to FVIS.
Schedule of reconciliation of opening balances to previously reported amounts	The following tables reconcile the reported 30 September 2018 balance sheet to the 1 October 2018 opening balance sheet on adoption of AASB 9 and AASB 15 showing separately the impact of adjustments relating to reclassification and remeasurement including the related tax impacts. 30 September 2018 1 October 2018 Restated Opening Consolidated Carrying AASB 9 changes AASB 15 carrying $m Amount Reclassifications Remeasurement 1 changes amount Assets Cash and balances with central banks 26,788 — — — 26,788 Collateral paid 4,787 — — — 4,787 Trading securities and financial assets measured at FVIS 23,132 275 — — 23,407 Derivative financial instruments 24,101 — — — 24,101 Available-for-sale securities 61,119 (61,119) — — — Investment securities — 60,844 (9) — 60,835 Loans (at amortised cost) 709,144 (56) (925) — 708,163 Loans (at fair value) 546 56 — — 602 Other financial assets 5,517 — — — 5,517 Deferred tax assets 1,180 — 300 — 1,480 All other assets 23,278 — — — 23,278 Total assets 879,592 — (634) — 878,958 Liabilities Collateral received 2,184 — — — 2,184 Deposits and other borrowings 559,285 — — — 559,285 Other financial liabilities 28,105 — — (12) 28,093 Derivative financial instruments 24,407 — — — 24,407 Debt issues 172,596 — — — 172,596 Provisions 1,928 — 98 — 2,026 Loan capital 17,265 — — — 17,265 All other liabilities 9,249 — (12) 17 9,254 Total liabilities 815,019 — 86 5 815,110 Net assets 64,573 — (720) (5) 63,848 Shareholders’ equity Share capital: Ordinary shares 36,054 — — — 36,054 Treasury shares and RSP treasury shares (493) — — — (493) Reserves 1,077 — 2 — 1,079 Retained profits 27,883 — (722) (5) 27,156 Total equity attributable to owners of Westpac Banking Corporation 64,521 — (720) (5) 63,796 Non-controlling interests 52 — — — 52 Total shareholder's equity and Non-controlling interests 64,573 — (720) (5) 63,848 1. The impact on adoption of expected credit loss provisioning resulted in increases in provisions on loans by $882 million, provisions for credit commitments by $98 million and loss allowance on debt securities at FVOCI by $2 million and provisions on debt securities at amortised cost by $9 million. 30 September 2018 1 October 2018 Restated Opening Parent Entity Carrying AASB 9 changes AASB 15 carrying $m Amount Reclassifications Remeasurement 1 changes amount Assets Cash and balances with central banks 24,976 — — — 24,976 Collateral paid 4,722 — — — 4,722 Trading securities and financial assets measured at FVIS 21,415 — — — 21,415 Derivative financial instruments 23,562 — — — 23,562 Available-for-sale securities 56,513 (56,513) — — — Investment securities — 56,513 — — 56,513 Loans (at amortised cost) 629,622 (56) (786) — 628,780 Loans (at fair value) 546 56 — — 602 Other financial assets 4,666 — — — 4,666 Due from subsidiaries 140,597 — — — 140,597 Investment in subsidiaries 4,508 — — — 4,508 Deferred tax assets 1,102 — 258 — 1,360 All other assets 11,001 — — — 11,001 Total assets 923,230 — (528) — 922,702 Liabilities Collateral received 1,748 — — — 1,748 Deposits and other borrowings 500,468 — — — 500,468 Other financial liabilities 27,266 — — (9) 27,257 Derivative financial instruments 24,229 — — — 24,229 Debt issues 152,288 — — — 152,288 Due to subsidiaries 142,400 — (118) — 142,282 Provisions 1,766 — 95 — 1,861 Loan capital 17,265 — — — 17,265 All other liabilities 444 — (12) 16 448 Total liabilities 867,874 — (35) 7 867,846 Net assets 55,356 — (493) (7) 54,856 Shareholders’ equity Share capital: Ordinary shares 36,054 — — — 36,054 Treasury shares and RSP treasury shares (508) — — — (508) Reserves 1,114 — 2 — 1,116 Retained profits 18,696 — (495) (7) 18,194 Total equity attributable to owners of Westpac Banking Corporation 55,356 — (493) (7) 54,856 Non-controlling interests — — — — — Total shareholder's equity and non-controlling interests 55,356 — (493) (7) 54,856 1. The impact on adoption of expected credit loss provisioning resulted in increases in provisions on loans by $751 million, provisions for credit commitments by $95 million and loss allowance on debt securities measured at FVOCI by $2 million. Included in the increase in provision on loans was $118 million relating to loans which have been securitised by the Parent Entity to subsidiaries. The due to subsidiaries balance has been reduced by this amount as the relevant subsidiary records the expected credit loss on these loans and adjusts its intergroup receivable from the Parent Entity accordingly.

Segment reporting (Tables)

Segment reporting (Tables)	12 Months Ended
	Sep. 30, 2019
Segment reporting
Schedule of segment results on a cash earnings basis	The following tables present the segment results on a cash earnings basis for the Group: 1 Westpac Westpac Net cash 2019 Institutional New Group earnings Income $m Consumer Business Bank Zealand Businesses Total adjustment Statement Net interest income 7,942 5,092 1,443 1,860 616 16,953 (46) 16,907 Net fee income 608 464 610 163 (190) 1,655 — 1,655 Net wealth management and insurance income 425 899 — 177 (478) 1,023 6 1,029 Trading income 93 106 695 37 (24) 907 22 929 Other income 15 (5) (13) 46 74 117 12 129 Net operating income before operating expenses and impairment charges 9,083 6,556 2,735 2,283 (2) 20,655 (6) 20,649 Operating expenses (3,817) (2,805) (1,284) (939) (1,186) (10,031) (75) (10,106) Impairment (charges)/benefits (581) (272) (46) 10 95 (794) — (794) Profit before income tax 4,685 3,479 1,405 1,354 (1,093) 9,830 (81) 9,749 Income tax expense (1,397) (1,048) (386) (369) 225 (2,975) 16 (2,959) Net profit attributable to non-controlling interests — — (5) — (1) (6) — (6) Cash earnings for the year 3,288 2,431 1,014 985 (869) 6,849 (65) 6,784 Net cash earnings adjustments — (45) — (1) (19) (65) Net profit attributable to owners of Westpac Banking Corporation 3,288 2,386 1,014 984 (888) 6,784 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Statutory comparatives have not been restated. However, where applicable, cash earnings comparatives (excluding expected credit loss provisioning) have been restated to aid comparability. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Both statutory and cash earnings comparatives have been restated. Refer to Note 1 for further detail. Westpac Westpac Net cash 2018 Institutional New Group earnings Income $m Consumer Business Bank Zealand Businesses Total adjustment Statement Net interest income 7,850 5,284 1,442 1,799 812 17,187 (682) 16,505 Net fee income 659 511 610 164 (34) 1,910 514 2,424 Net wealth management and insurance income 549 1,012 212 149 95 2,017 44 2,061 Trading income 96 100 697 51 (18) 926 19 945 Other income 7 17 46 9 46 125 (53) 72 Net operating income before operating expenses and impairment charges 9,161 6,924 3,007 2,172 901 22,165 (158) 22,007 Operating expenses (3,774) (2,651) (1,449) (855) (969) (9,698) 132 (9,566) Impairment (charges)/benefits (486) (321) 16 (22) 1 (812) 102 (710) Profit before income tax 4,901 3,952 1,574 1,295 (67) 11,655 76 11,731 Income tax expense (1,478) (1,196) (476) (361) (75) (3,586) (46) (3,632) Net profit attributable to non-controlling interests — — (5) — 1 (4) — (4) Cash earnings for the year 3,423 2,756 1,093 934 (141) 8,065 30 8,095 Net cash earnings adjustments (15) (76) — 13 108 30 Net profit attributable to owners of Westpac Banking Corporation 3,408 2,680 1,093 947 (33) 8,095 Westpac Westpac Net cash 2017 Institutional New Group earnings Income $m Consumer Business Bank Zealand Businesses Total adjustment Statement Net interest income 7,733 4,950 1,354 1,706 712 16,455 (939) 15,516 Net fee income 745 518 628 197 82 2,170 433 2,603 Net wealth management and insurance income 488 951 93 148 130 1,810 (10) 1,800 Trading income 100 100 967 51 — 1,218 (16) 1,202 Other income 18 48 28 14 (31) 77 452 529 Net operating income before operating expenses and impairment charges 9,084 6,567 3,070 2,116 893 21,730 (80) 21,650 Operating expenses (3,548) (2,548) (1,358) (890) (834) (9,178) (104) (9,282) Impairment (charges)/benefits (600) (369) (79) 51 43 (954) 101 (853) Profit before income tax 4,936 3,650 1,633 1,277 102 11,598 (83) 11,515 Income tax expense (1,484) (1,096) (463) (360) (126) (3,529) 11 (3,518) Net profit attributable to non-controlling interests — — (7) — — (7) — (7) Cash earnings for the year 3,452 2,554 1,163 917 (24) 8,062 (72) 7,990 Net cash earnings adjustments (116) 150 — (14) (92) (72) Net profit attributable to owners of Westpac Banking Corporation 3,336 2,704 1,163 903 (116) 7,990 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Statutory comparatives have not been restated. However, where applicable, cash earnings comparatives (excluding expected credit loss provisioning) have been restated to aid comparability. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Both statutory and cash earnings comparatives have been restated. Refer to Note 1 for further detail.
Schedule of reconciliation of cash earnings to net profit	$m Cash earnings for the year 6,849 8,065 8,062 Cash earning adjustments: Amortisation of intangible assets — (17) (137) Fair value gain/(loss) on economic hedges (35) 126 (69) Ineffective hedges 20 (13) (16) Adjustments relating to Pendal (45) (73) 171 Treasury shares (5) 7 (21) Total cash earnings adjustments (65) 30 (72) Net profit attributable to owners of Westpac Banking Corporation 6,784 8,095 7,990
Schedule of geographic segments	2019 2018 2017 $m % $m % $m % Revenue Australia 1 31,113 84.2 32,595 85.6 32,210 86.2 New Zealand 1 4,520 12.2 4,381 11.5 4,326 11.6 Other overseas 2 1,331 3.6 1,097 2.9 830 2.2 Total 36,964 100.0 38,073 100.0 37,366 100.0 Non-current assets 3 Australia 12,280 93.7 12,271 93.7 12,326 93.8 New Zealand 761 5.8 756 5.8 745 5.7 Other overseas 2 67 0.5 65 0.5 68 0.5 Total 13,108 100.0 13,092 100.0 13,139 100.0 1. Comparatives have been restated for consistency. 2. Other overseas included Pacific Islands, Asia, the Americas and Europe. 3. Non-current assets represent property and equipment and intangible assets.

Net interest income (Tables)

Net interest income (Tables)	12 Months Ended
	Sep. 30, 2019
Net interest income
Schedule of net interest income	Note 3. Net interest income 1 Accounting policy Interest income and interest expense for all interest earning financial assets and interest bearing financial liabilities at amortised cost or FVOCI, detailed within the table below, are recognised using the effective interest rate method. Net income from treasury’s interest rate and liquidity management activities and the cost of the Bank levy are included in net interest income. The effective interest rate method calculates the amortised cost of a financial instrument by discounting the financial instrument’s estimated future cash receipts or payments to their present value and allocates the interest income or interest expense, including any fees, costs, premiums or discounts integral to the instrument, over its expected life. Interest income is calculated based on the gross carrying amount of financial assets in stages 1 and 2 of the Group’s ECL model and on the carrying amount net of the provision for ECL for financial assets in stage 3. Refer to Note 13 for further details of the Group’s ECL model. Consolidated Parent Entity $m Interest income 2 Calculated using the effective interest rate method Cash and balances with central banks 334 326 242 311 301 Collateral paid 201 129 96 197 126 Available-for-sale securities — 1,914 1,795 — 1,743 Investment securities 1,919 — — 1,750 — Loans 30,029 29,583 28,438 26,171 25,763 Other financial assets 35 35 43 33 32 Due from subsidiaries — — — 4,274 4,225 Total interest income calculated using the effective interest rate method 32,518 31,987 30,614 32,736 32,190 Other Net ineffectiveness on qualifying hedges 28 (18) (22) 26 (22) Trading securities and financial assets measured at FVIS 662 564 574 633 521 Loans 14 38 66 14 38 Due from subsidiaries — — — 103 103 Total other 704 584 618 776 640 Total interest income 33,222 32,571 31,232 33,512 32,830 Interest expense Calculated using the effective interest rate method Collateral received (57) (45) (19) (51) (41) Deposits and other borrowings (7,967) (8,141) (8,026) (6,745) (6,949) Debt issues (4,706) (4,325) (3,448) (4,218) (3,820) Due to subsidiaries — — — (4,905) (4,840) Loan capital (776) (774) (693) (776) (774) Other financial liabilities (274) (318) (307) (273) (316) Total interest expense calculated using the effective interest rate method (13,780) (13,603) (12,493) (16,968) (16,740) Other Deposits and other borrowings (978) (880) (842) (961) (868) Trading liabilities (915) (959) (2,065) (828) (754) Debt issues (163) (155) (137) (140) (138) Bank levy (391) (378) (95) (391) (378) Due to subsidiaries — — — 78 (11) Other interest expense (88) (91) (84) (85) (88) Total other (2,535) (2,463) (3,223) (2,327) (2,237) Total interest expense (16,315) (16,066) (15,716) (19,295) (18,977) Net interest income 16,907 16,505 15,516 14,217 13,853 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Statutory comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Interest income includes items relating to customer refunds recognised as a reduction in interest income of $372 million (2018: $127 million, 2017: $58 million) for the Group, and $353 million (2018: $125 million) for the Parent Entity. Refer to Note 27 for further details.

Non-interest income (Tables)

Non-interest income (Tables)	12 Months Ended
	Sep. 30, 2019
Non-interest income
Schedule of non-interest income	Consolidated Parent Entity $m Net fee income Facility fees 730 1,365 1,350 680 1,351 Transaction fees 1,225 1,182 1,258 1,046 939 Other non-risk fee income 2 (76) 98 229 (638) 54 Fee income 1,879 2,645 2,837 1,088 2,344 Credit card loyalty programs (121) (126) (152) (90) (101) Transaction fee related expenses (103) (95) (82) (76) (71) Fee expenses (224) (221) (234) (166) (172) Net fee income 1,655 2,424 2,603 922 2,172 Net wealth management and insurance income Wealth management income 2 276 1,145 997 — — Life insurance premium income 1,443 1,410 1,204 — — General insurance and lenders mortgage insurance (LMI) net premium earned 482 472 451 — — Life insurance investment and other income 3 409 666 544 — — General insurance and LMI investment and other income 52 50 77 — — Total insurance premium, investment and other income 2,386 2,598 2,276 — — Life insurance claims and changes in insurance liabilities (1,266) (1,396) (1,155) — — General insurance and LMI claims and other expenses (367) (286) (318) — — Total insurance claims, changes in liabilities and other expenses (1,633) (1,682) (1,473) — — Net wealth management and insurance income 1,029 2,061 1,800 — — Trading income 929 945 1,202 956 919 Other income Dividends received from subsidiaries — — — 2,215 2,013 Transactions with subsidiaries — — — 457 472 Dividends received from other entities 6 3 2 3 3 Net gain on sale of associates 4 38 — 279 — — Net gain on disposal of assets 61 24 6 60 — Net gain/(loss) on hedging overseas operations — — — (71) 19 Net gain/(loss) on derivatives held for risk management purposes 5 (11) 8 52 (11) 8 Net gain/(loss) on financial instruments measured at fair value (39) 38 11 (25) 36 Net gain/(loss) on disposal of controlled entities 3 (9) — — — Rental income on operating leases 72 107 143 50 77 Share of associates' net profit/(loss) (23) (10) 17 — — Other 2,6 22 (89) 19 6 5 Total other income 129 72 529 2,684 2,633 Total non-interest income 3,742 5,502 6,134 4,562 5,724 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Compliance, regulation and remediation provisions relating to customer refunds were recognised as a reduction of other non-risk fee income and wealth management income of $860 million (2018: $171 million; 2017: $111 million) for the Group, and $842 million (2018: $154 million) for the Parent Entity. Refer to Note 27 for further details. 3. Includes policy holder tax recoveries. 4. On 26 May 2017, the Group sold 60 million (19% of Pendal’s shares on issue) Pendal shares. 5. Income from derivatives held for risk management purposes reflects the impact of economic hedges of foreign currency capital and earnings. 6. The Group recognised $104 million of impairment on the remaining shareholdings of Pendal in 2018.

Operating expenses (Tables)

Operating expenses (Tables)	12 Months Ended
	Sep. 30, 2019
Operating expenses
Schedule of operating expenses	Note 5. Operating expenses 1,2 Consolidated Parent Entity $m Staff expenses Employee remuneration, entitlements and on-costs 4,320 4,292 4,133 3,611 3,537 Superannuation expense 3 378 386 380 313 315 Share-based payments 108 95 113 101 97 Restructuring costs 232 114 75 202 97 Total staff expenses 5,038 4,887 4,701 4,227 4,046 Occupancy expenses Operating lease rentals 658 632 648 597 565 Depreciation of property and equipment 222 245 291 176 196 Other 143 156 134 122 134 Total occupancy expenses 1,023 1,033 1,073 895 895 Technology expenses Amortisation and impairment of software assets 719 620 628 653 567 Depreciation and impairment of IT equipment 129 141 158 117 124 Technology services 810 721 639 670 564 Software maintenance and licences 371 342 313 321 289 Telecommunications 207 209 190 182 183 Data processing 83 77 80 81 76 Total technology expenses 2,319 2,110 2,008 2,024 1,803 Other expenses Professional and processing services 1,060 824 755 860 638 Amortisation and impairment of intangible assets and deferred expenditure 9 138 192 — 21 Postage and stationery 179 182 217 143 152 Advertising 245 173 155 196 127 Non-lending losses 58 133 73 43 112 Impairment on investments in subsidiaries — — — 136 44 Other 175 86 108 107 162 Total other expenses 1,726 1,536 1,500 1,485 1,256 Total operating expenses 10,106 9,566 9,282 8,631 8,000 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Operating expenses include costs recognised in relation to compliance, regulation and remediation provisions of $196 million (2018: $111 million; 2017: $12 million) for the Group, and $180 million (2018: $108 million) for the Parent entity. Refer to Note 27 for further details. 3. Superannuation expense includes both defined contribution and defined benefit expense. Further details of the Group's defined benefit plans are in Note 34.

Impairment charges (Tables)

Impairment charges (Tables)	12 Months Ended
	Sep. 30, 2019
Impairment charges
Schedule of impairment charges	The following table details impairment charges for year ending 30 September 2019 based on the requirements of AASB 9. Consolidated Parent Entity $m 2019 2019 Provisions raised/(released) Performing (209) (180) Non-performing 1,175 1,073 Recoveries (172) (143) Impairment charges 794 750 of which relates to: Loan and credit commitments 794 750 Impairment charges 794 750 As comparatives have not been restated for the adoption of AASB 9, the following table details impairment charges for comparative year ends based on the requirements of AASB 139. Once AASB 9 has been effective for all comparative year ends, this table will no longer be presented. Consolidated Parent Entity $m 2018 2017 2018 Individually assessed provisions raised 371 610 341 Write-backs (150) (288) (131) Recoveries (179) (168) (138) Collectively assessed provisions raised 668 699 610 Impairment charges 710 853 682

Income tax (Tables)

Income tax (Tables)	12 Months Ended
	Sep. 30, 2019
Income tax
Schedule of reconciliation to profit before income tax	Consolidated Parent Entity $m Profit before income tax 9,749 11,731 11,515 9,398 10,895 Tax at the Australian company tax rate of 30% 2,925 3,519 3,455 2,819 3,269 The effect of amounts which are not deductible/(assessable) in calculating taxable income Hybrid capital distributions 72 69 64 72 69 Life insurance: Tax adjustment on policyholder earnings 8 24 8 — — Adjustment for life business tax rates (1) (1) (1) — — Dividend adjustments (1) (1) (3) (664) (604) Other non-assessable items (14) (5) (3) (2) (2) Other non-deductible items 12 64 32 9 34 Adjustment for overseas tax rates (32) (28) (30) (5) (3) Income tax (over)/under provided in prior years (10) 9 4 3 — Other items — (18) (8) 45 (12) Total income tax expense 2,959 3,632 3,518 2,277 2,751 Income tax analysis Income tax expense comprises: Current income tax 3,370 3,704 3,404 2,711 2,806 Movement in deferred tax (401) (81) 110 (437) (55) Income tax (over)/under provision in prior years (10) 9 4 3 — Total income tax expense 2,959 3,632 3,518 2,277 2,751 Total Australia 2,526 3,178 3,072 2,215 2,677 Total Overseas 433 454 446 62 74 Total income tax expense 1 2,959 3,632 3,518 2,277 2,751 1. As the Bank Levy is not a levy on income, it is not included in income tax. It is included in Note 3.
Schedule of temporary differences attributable to deferred tax assets and deferred tax liabilities	Deferred tax assets The balance comprises temporary differences attributable to: Consolidated Parent Entity $m Amounts recognised in the income statements Provisions for impairment charges on loans 1 — 827 — 708 Provisions for expected credit losses on loans 1 802 — 695 — Provision for long service leave, annual leave and other employee benefits 309 323 286 301 Financial instruments 2 5 2 2 Property and equipment 195 196 173 177 Other provisions 2 590 225 561 207 All other liabilities 2 366 216 358 204 Total amounts recognised in the income statements 2,264 1,792 2,075 1,599 Amounts recognised directly in other comprehensive income Investment securities 10 — 11 — Cash flow hedges 52 50 28 31 Defined benefit 105 — 101 — Total amounts recognised directly in other comprehensive income 167 50 140 31 Amount recognised in opening retained profits Provision for expected credit losses on loans 266 — 227 — Provision for impairment on credit commitments 30 — 30 — Expected credit losses on investment securities 1 — 1 — Financial instruments 3 — — — Impact on adoption of AASB 9 1 300 — 258 — Gross deferred tax assets 2,731 1,842 2,473 1,630 Set-off of deferred tax assets and deferred tax liabilities (683) (662) (548) (528) Net deferred tax assets 2,048 1,180 1,925 1,102 Movements Opening balance 1,180 1,112 1,102 1,053 Impact on adoption of new accounting standards 1 300 — 258 — Restated opening balance 1,480 1,112 1,360 1,053 Recognised in the income statements 472 84 476 100 Recognised in other comprehensive income 117 (16) 109 (13) Set-off of deferred tax assets and deferred tax liabilities (21) — (20) (38) Closing balance 2,048 1,180 1,925 1,102 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Statutory comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Comparatives has been restated for consistency. Deferred tax liabilities The balance comprises temporary differences attributable to: Consolidated Parent Entity $m Amounts recognised in the income statements Finance lease transactions 230 158 206 161 Property and equipment 128 135 129 135 Life insurance assets 57 51 — — All other assets 312 312 213 213 Total amounts recognised in the income statements 727 656 548 509 Amounts recognised directly in other comprehensive income Available-for-sale securities — 10 — 7 Defined benefit — 14 — 15 Total amounts recognised directly in other comprehensive income — 24 — 22 Gross deferred tax liabilities 727 680 548 531 Set-off of deferred tax assets and deferred tax liabilities (683) (662) (548) (528) Net deferred tax liabilities 44 18 — 3 Movements Opening balance 18 10 3 — Recognised in the income statements 71 3 39 45 Recognised in other comprehensive income (24) 5 (22) (4) Set-off of deferred tax assets and deferred tax liabilities (21) — (20) (38) Closing balance 44 18 — 3
Schedule of unrecognised deferred tax balances	Consolidated Parent Entity $m Unrecognised deferred tax asset Tax losses on revenue account 291 190 237 151 Unrecognised deferred tax liability Gross retained earnings of subsidiaries which the Parent Entity does not intend to distribute in the foreseeable future 51 58 — —

Earnings per share (Tables)

Earnings per share (Tables)	12 Months Ended
	Sep. 30, 2019
Earnings per share
Schedule of earnings per share	Consolidated 2019 2018 2017 $m Basic Diluted Basic Diluted Basic Diluted Net profit attributable to shareholders 6,784 6,784 8,095 8,095 7,990 7,990 Adjustment for RSP dividends 1 (6) (6) (5) — (6) — Adjustment for potential dilution: Distributions to convertible loan capital holders 2 — 290 — 283 — 253 Adjusted net profit attributable to shareholders 6,778 7,068 8,090 8,378 7,984 8,243 Weighted average number of ordinary shares (millions) Weighted average number of ordinary shares on issue 3,456 3,456 3,414 3,414 3,364 3,364 Treasury shares (including RSP share rights) 1 (6) (6) (8) (8) (9) (9) Adjustment for potential dilution: Share-based payments — 1 — 3 — 4 Convertible loan capital 2 — 278 — 232 — 236 Adjusted weighted average number of ordinary shares 3,450 3,729 3,406 3,641 3,355 3,595 Earnings per ordinary share (cents) 196.5 189.5 237.5 230.1 238.0 229.3 1. RSP share rights are explained in Note 33. Some RSP share rights have not vested and are not ordinary shares but do receive dividends. These RSP dividends are deducted to show the profit attributable to ordinary shareholders. In 2019, RSP share rights were antidilutive. 2. The Group has issued convertible loan capital which may convert into ordinary shares in the future (refer to Note 19 for further details). These convertible loan capital instruments are all dilutive, and diluted EPS is therefore calculated as if the instruments had been converted at the beginning of the year or , if later, the instruments’ issue date.

Average balance sheet and int_2

Average balance sheet and interest rates (Tables)	12 Months Ended
	Sep. 30, 2019
Average balance sheet and interest rates
Summary of the average daily balances of the Group's interest earning assets and interest bearing liabilities	2019 2018 2017 Average Interest Average Average Interest Average Average Interest Average Balance Income Rate Balance Income Rate Balance Income Rate Consolidated $m $m % $m $m % $m $m % Assets Interest earning assets Collateral paid Australia 8,428 152 1.8 5,239 86 1.6 6,926 65 0.9 New Zealand 364 7 1.9 252 4 1.6 733 5 0.7 Other overseas 2,031 42 2.1 2,594 39 1.5 2,042 26 1.3 Trading securities and financial assets measured at FVIS: Australia 20,691 468 2.3 17,420 423 2.4 18,418 416 2.3 New Zealand 3,862 85 2.2 3,538 80 2.3 4,238 96 2.3 Other overseas 4,521 109 2.4 3,160 61 1.9 4,101 62 1.5 Available-for-sale securities: Australia — — — 55,458 1,692 3.1 52,457 1,573 3.0 New Zealand — — — 3,304 136 4.1 3,479 147 4.2 Other overseas — — — 2,778 86 3.1 2,272 75 3.3 Investment securities Australia 56,875 1,691 3.0 — — — — — — New Zealand 3,850 130 3.4 — — — — — — Other overseas 3,062 98 3.2 — — — — — — Loans and other receivables 2 : Australia 589,427 25,931 4.4 578,679 25,700 4.4 558,361 24,789 4.4 New Zealand 79,255 3,650 4.6 73,902 3,516 4.8 73,055 3,463 4.7 Other overseas 26,558 859 3.2 28,620 748 2.6 26,212 515 2.0 Total interest earning assets and interest income 798,924 33,222 4.2 774,944 32,571 4.2 752,294 31,232 4.2 Non-Interest earning assets Derivative financial instruments 3 25,959 26,443 28,897 Life insurance assets 9,610 10,664 12,447 All other assets 3 60,231 61,259 60,420 Total non-interest earning assets 3 95,800 98,366 101,764 Total assets 3 894,724 873,310 854,058 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. For 2019, loans and other receivables are net of Stage 3 provisions to reflect the adoption of AASB 9 where interest income is determined based on their carrying value, net of Stage 3 provisions. Stages 1 and 2 provisions were not included in the average interest earning assets balance as interest income is determined based on the gross value of loans and other receivables. For 2018 and 2017, loans and other receivables are net of provisions for impairment charges on loans as interest income is determined based on their carrying value, net of provisions for impairment charges on loans. 3. Derivative assets for the year ended 30 September 2018 were restated from $34,702 million to $26,443 million (30 September 2017: $37,673 million to $28,897 million) and all other assets were restated from $61,938 million to $61,259 million (30 September 2017: $60,111 million to $60,420 million). Accordingly, total non-interest earning assets and total assets were restated. 2019 2018 2017 Average Interest Average Average Interest Average Average Interest Average Balance Expense Rate Balance Expense Rate Balance Expense Rate Consolidated $m $m % $m $m % $m $m % Liabilities Interest bearing liabilities Collateral received: Australia 2,039 41 2.0 2,383 37 1.6 1,641 15 0.9 New Zealand 390 8 2.1 342 6 1.8 98 2 2.0 Other overseas 1,188 8 0.7 184 2 1.1 242 2 0.8 Deposits and other borrowings: Australia 425,799 7,023 1.6 422,006 7,308 1.7 409,586 7,344 1.8 New Zealand 54,720 1,235 2.3 51,368 1,196 2.3 51,042 1,173 2.3 Other overseas 26,270 687 2.6 26,599 517 1.9 24,085 351 1.5 Loan capital: Australia 15,080 632 4.2 15,028 635 4.2 15,841 638 4.0 New Zealand 1,777 91 5.1 1,645 84 5.1 43 2 4.7 Other overseas 1,324 53 4.0 1,324 55 4.2 1,324 53 4.0 Other interest bearing liabilities 2 : Australia 188,736 5,937 3.1 177,746 5,594 3.1 171,940 5,343 3.1 New Zealand 15,665 575 3.7 15,011 591 3.9 16,366 754 4.6 Other overseas 1,294 25 1.9 1,873 41 2.2 2,716 39 1.4 Total interest bearing liabilities and interest expense 734,282 16,315 2.2 715,509 16,066 2.2 694,924 15,716 2.3 Non-interest bearing liabilities Deposits and other borrowings: Australia 42,455 41,156 39,355 New Zealand 5,996 5,204 4,660 Other overseas 819 817 867 Derivative financial instruments 3 26,568 26,218 32,488 Life insurance liabilities 7,653 8,874 10,560 All other liabilities 3 13,187 13,484 12,628 Total non-interest bearing liabilities 3 96,678 95,753 100,558 Total liabilities 3 830,960 811,262 795,482 Shareholders’ equity 63,714 62,017 58,556 Non-controlling interests 50 31 20 Total equity 63,764 62,048 58,576 Total liabilities and equity 3 894,724 873,310 854,058 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Include net impact of Treasury balance sheet management activities and the Bank Levy. 3. Derivative liabilities for the year ended 30 September 2018 were restated from $37,504 million to $26,218 million (30 September 2017: $42,780 million to $32,488 million), and all other liabilities were restated from $12,199 million to $13,484 million (30 September 2017: $11,586 million to $12,628 million). Accordingly, total non-interest bearing liabilities, total liabilities and total liabilities and equity were restated.
Summary of change in net interest income	2019 2018 Consolidated Change due to Change due to $m Volume Rate Total Volume Rate Total Interest earning assets Collateral paid: Australia 52 14 66 (16) 37 21 New Zealand 2 1 3 (3) 2 (1) Other overseas (8) 11 3 7 6 13 Trading securities and financial assets measured at FVIS: Australia 79 (34) 45 (23) 30 7 New Zealand 7 (2) 5 (16) — (16) Other overseas 26 22 48 (13) 12 (1) Investment securities 2 : Australia 43 (44) (1) 90 29 119 New Zealand 22 (28) (6) (7) (4) (11) Other overseas 9 3 12 17 (6) 11 Loans and other receivables: Australia 477 (246) 231 952 (41) 911 New Zealand 255 (121) 134 39 14 53 Other overseas (54) 165 111 50 183 233 Total change in interest income 910 (259) 651 1,077 262 1,339 Interest bearing liabilities Collateral received: Australia (5) 9 4 7 15 22 New Zealand 1 1 2 5 (1) 4 Other overseas 11 (5) 6 — — — Deposits and other borrowings: Australia 66 (351) (285) 223 (259) (36) New Zealand 78 (39) 39 7 16 23 Other overseas (6) 176 170 37 129 166 Loan capital: Australia 2 (5) (3) (33) 30 (3) New Zealand 7 — 7 75 7 82 Other overseas — (2) (2) — 2 2 Other interest bearing liabilities: Australia 346 (3) 343 198 53 251 New Zealand 26 (42) (16) (74) (89) (163) Other overseas (13) (3) (16) (16) 18 2 Total change in interest expense 513 (264) 249 429 (79) 350 Change in net interest income: Australia 242 40 282 608 216 824 New Zealand 174 (70) 104 — 79 79 Other overseas (19) 35 16 40 46 86 Total change in net interest income 397 5 402 648 341 989 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. The volume rate calculations for 2019 Investment securities has been completed against the equivalent Available-for-sale securities.

Trading securities and financ_2

Trading securities and financial assets measured at FVIS (Tables)	12 Months Ended
	Sep. 30, 2019
Trading securities and financial assets measured at FVIS
Schedule of trading securities and financial assets measured at FVIS	Consolidated Parent Entity $m Trading securities 22,210 18,777 16,519 20,719 17,671 Reverse repurchase agreements 6,833 1,379 6,887 6,731 1,379 Other financial assets measured at FVIS 2,738 2,976 2,577 2,115 2,365 Total trading securities and financial assets measured at FVIS 31,781 23,132 25,983 29,565 21,415
Schedule of trading securities	Consolidated Parent Entity $m Government and semi-government securities 13,328 11,402 12,519 Other debt securities 5,354 5,049 5,057 Equity securities 8 11 8 Other 87 57 87 Total trading securities 18,777 16,519 17,671
Schedule of other financial assets measured at FVIS	Consolidated Parent Entity $m Other debt securities 2,394 2,715 2,259 2,057 2,302 Equity securities 344 261 318 58 63 Total other financial assets measured at FVIS 2,738 2,976 2,577 2,115 2,365 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Available-for-sale securities_2

Available-for-sale securities / Investment securities (Tables)	12 Months Ended
	Sep. 30, 2019
Available-for-sale securities / Investment securities
Schedule of reclassification of available-for-sale securities	Transition to AASB 9 The following table shows how the available-for-sale securities under AASB 139 were classified on adoption of AASB 9 and the balance sheet line items they are reflected in. Refer to Note 1 for further details. Trading securities and financial assets Investment Securities measured at FVIS Debt securities at Equity securities at Debt securities at Equity securities at $m FVOCI FVOCI amortised cost FVIS Total Available-for-sale securities Consolidated 1 October 2018 Debt securities 59,924 — 811 — 60,735 Equity securities — 109 — 275 384 Total available-for-sale securities 59,924 109 811 275 61,119 Parent Entity 1 October 2018 Debt securities 56,436 — 10 — 56,446 Equity securities — 67 — — 67 Total available-for-sale securities 56,436 67 10 — 56,513
Schedule of investment securities recognised under AASB 9	Balances recognised under AASB 9 Consolidated Parent Entity $m Investment securities Investment securities measured at FVOCI Government and semi-government debt securities 53,389 50,980 Other debt securities 19,058 17,325 Equity securities 134 66 Total investment securities measured at FVOCI 72,581 68,371 Investment securities measured at amortised cost Government and semi-government debt securities 736 23 Other debt securities 93 4 Total investment securities measured at amortised cost 829 27 Provisions for ECL on debt securities at amortised cost (9) — Total net investment securities measured at amortised cost 820 27 Total investment securities 73,401 68,398
Schedule of maturities of the available-for-sale securities and their weighted-average yield	The following table shows the maturities of the Group’s investment securities as at 30 September 2019 and their weighted average yield. There are no tax-exempt securities. Within Over 1 Year Over 5 years Over No specific Weighted 1 year to 5 years to 10 years 10 years maturity Total average 2019 $m % $m % $m % $m % $m % $m % Carrying amount Government and semi-government debt securities 5,691 4.2 % 24,137 2.9 % 23,040 2.8 % 1,248 2.2 % — — 54,116 3.1 % Other debt securities 4,040 2.8 % 15,060 2.7 % 51 2.8 % — — — — 19,151 2.7 % Equity securities — — — — — — — — 134 — 134 — Total by maturity 9,731 39,197 23,091 1,248 134 73,401
Schedule of available-for-sale securities recognised under AASB 139	Balances recognised under AASB 139 Consolidated Parent Entity $m Available-for-sale securities Government and semi-government securities 42,979 43,382 40,345 Other debt securities 17,756 16,863 16,101 Equity securities 384 465 67 Total available-for-sale securities 61,119 60,710 56,513 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Statutory comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Loans (Tables)

Loans (Tables)	12 Months Ended
	Sep. 30, 2019
Loans
Schedule of financial assets	The loan portfolio is disaggregated by location of booking office and product type, as follows: Consolidated Parent Entity $m 2019 2018 2019 2018 Australia Housing 449,201 444,741 449,192 444,730 Personal 2 21,247 22,997 20,848 22,008 Business 152,360 154,347 148,850 150,580 Total Australia 622,808 622,085 618,890 617,318 New Zealand Housing 47,731 44,772 — — Personal 2 1,709 1,869 — — Business 29,285 27,701 411 376 Total New Zealand 78,725 74,342 411 376 Total other overseas 16,845 16,077 15,738 14,881 Total loans 718,378 712,504 635,039 632,575 Provisions for ECL on loans (refer to Note 13) (3,608) — (3,103) — Provisions for impairment charges on loans (refer to Note 13) — (2,814) — (2,407) Total net loans 3 714,770 709,690 631,936 630,168 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Margin lending and other which were separately presented in prior years are now included in Personal loans. Comparatives have been revised for consistency. 3. Total net loans include securitised loans of $7,737 million (2018: $7,135 million) for the Group and $91,061 million (2018: $85,965 million) for the Parent Entity.
Schedule of loans by industry classification	Consolidated $m Australia Accommodation, cafes and restaurants 8,039 8,297 8,177 7,536 7,490 Agriculture, forestry and fishing 9,210 8,642 8,182 7,953 7,667 Construction 7,186 6,751 6,043 5,797 5,596 Finance and insurance 14,069 14,059 12,923 14,298 13,175 Government, administration and defence 753 628 554 675 796 Manufacturing 9,337 9,298 9,054 9,140 9,342 Mining 2,869 3,311 3,025 3,641 4,415 Property 44,769 45,471 43,220 44,785 44,667 Property services and business services 14,035 13,477 12,050 11,674 10,703 Services 12,099 12,158 12,950 12,362 10,798 Trade 16,144 16,501 16,063 16,044 15,484 Transport and storage 8,268 8,853 8,624 9,015 9,940 Utilities 4,077 4,350 5,237 4,025 3,554 Retail lending 466,550 463,609 451,315 429,522 400,441 Other 5,403 6,680 4,229 2,777 1,587 Total Australia 622,808 622,085 601,646 579,244 545,655 New Zealand Accommodation, cafes and restaurants 355 323 290 256 182 Agriculture, forestry and fishing 8,553 8,138 7,772 7,788 6,860 Construction 493 502 447 396 359 Finance and insurance 3,009 2,903 2,478 2,682 1,725 Government, administration and defence 85 114 137 163 292 Manufacturing 1,913 2,199 2,090 2,324 2,110 Mining 278 206 141 280 407 Property 6,412 5,997 5,858 5,925 5,301 Property services and business services 1,182 1,073 1,113 1,084 925 Services 1,973 1,733 1,810 1,396 1,173 Trade 2,344 2,509 2,163 2,333 2,003 Transport and storage 1,131 1,029 1,080 1,257 1,094 Utilities 1,429 1,003 1,237 1,600 1,021 Retail lending 49,473 46,613 45,190 45,011 40,277 Other 95 — — — — Total New Zealand 78,725 74,342 71,806 72,495 63,729 Other overseas Accommodation, cafes and restaurants 109 112 97 118 111 Agriculture, forestry and fishing 150 19 5 12 568 Construction 55 71 55 147 247 Finance and insurance 2 4,628 4,774 4,289 2,767 4,297 Government, administration and defence 2 25 4 4 130 Manufacturing 3,784 3,257 2,982 2,619 3,848 Mining 468 322 349 535 778 Property 492 467 491 479 409 Property services and business services 1,610 1,684 540 526 403 Services 243 205 205 99 182 Trade 2 2,293 2,312 2,680 3,463 2,898 Transport and storage 997 1,232 1,389 1,186 1,099 Utilities 1,086 736 514 442 722 Retail lending 863 683 657 1,120 1,191 Other 65 178 76 — 77 Total other overseas 16,845 16,077 14,333 13,517 16,960 Total loans 718,378 712,504 687,785 665,256 626,344 Provisions for ECL on loans (refer to Note 13) (3,608) — — — — Provisions for impairment charges on loans (refer to Note 13) — (2,814) (2,866) (3,330) (3,028) Total net loans 714,770 709,690 684,919 661,926 623,316 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. 2018 comparatives have been revised for consistency. Parent Entity $m Australia Accommodation, cafes and restaurants 7,967 8,228 Agriculture, forestry and fishing 9,151 8,584 Construction 6,810 6,247 Finance and insurance 14,005 14,006 Government, administration and defence 746 620 Manufacturing 9,155 9,072 Mining 2,849 3,279 Property 44,707 45,471 Property services and business services 13,192 12,433 Services 11,853 11,891 Trade 15,961 16,291 Transport and storage 7,961 8,456 Utilities 4,053 4,324 Retail lending 465,535 462,568 Other 4,945 5,848 Total Australia 618,890 617,318 New Zealand Accommodation, cafes and restaurants — — Agriculture, forestry and fishing 5 2 Construction 8 5 Finance and insurance — — Government, administration and defence — — Manufacturing 94 98 Mining — — Property — — Property services and business services 7 8 Services — — Trade 297 263 Transport and storage — — Utilities — — Retail lending — — Other — — Total New Zealand 411 376 Other overseas Accommodation, cafes and restaurants 67 70 Agriculture, forestry and fishing 130 4 Construction 47 59 Finance and insurance 2 4,624 4,769 Government, administration and defence 2 24 Manufacturing 3,780 3,253 Mining 465 323 Property 226 234 Property services and business services 1,528 1,595 Services 216 187 Trade 2 2,115 2,126 Transport and storage 886 1,127 Utilities 1,036 734 Retail lending 587 277 Other 29 99 Total other overseas 15,738 14,881 Total loans 635,039 632,575 Provisions for ECL on loans (3,103) — Provisions for impairment charges on loans — (2,407) Total net loans 631,936 630,168 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. 2018 comparatives have been restated for consistency.
Schedule of loan maturities by type of customer	Consolidated 2019 $m Up to 1 year 1 to 5 years Over 5 years Total Loans by type of customer in Australia Accommodation, cafes and restaurants 2,776 4,883 380 8,039 Agriculture, forestry and fishing 2,676 5,967 567 9,210 Construction 1,785 4,514 887 7,186 Finance and insurance 6,278 5,054 2,737 14,069 Government, administration and defence 286 189 278 753 Manufacturing 3,420 5,413 504 9,337 Mining 353 1,734 782 2,869 Property 18,410 24,821 1,538 44,769 Property services and business services 3,011 8,969 2,055 14,035 Services 3,915 6,395 1,789 12,099 Trade 7,314 7,649 1,181 16,144 Transport and storage 1,603 5,758 907 8,268 Utilities 1,009 2,839 229 4,077 Retail lending 21,725 12,394 432,431 466,550 Other 718 3,511 1,174 5,403 Total Australia 75,279 100,090 447,439 622,808 Total New Zealand 19,124 12,790 46,811 78,725 Total other overseas 6,021 9,529 1,295 16,845 Total loans 100,424 122,409 495,545 718,378
Schedule of interest rate segmentation of loans maturing after one year	2019 2018 Loans at Loans at Loans at Loans at variable fixed variable fixed Consolidated interest interest interest interest $m rates rates Total rates rates Total Interest rate segmentation of Group loans maturing after one year By offices in Australia 418,494 129,035 547,529 423,886 127,077 550,963 By offices in New Zealand 1 9,102 50,499 59,601 10,634 45,852 56,486 By offices in other overseas 1 9,881 943 10,824 8,182 927 9,109 Total loans maturing after one year 437,477 180,477 617,954 442,702 173,856 616,558 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Provisions for expected credi_2

Provisions for expected credit losses/impairment charges (Tables)	12 Months Ended
	Sep. 30, 2019
Provisions for expected credit losses
Schedule of sensitivity of the provision for ECL	$m Consolidated Parent Entity Reported probability-weighted ECL 3,913 3,378 100% base case ECL 2,748 2,387 100% downside ECL 7,065 6,067
Schedule of changes in provisions for impairment charges on loans	Consolidated Parent Entity $m Individually assessed provisions Opening balance 480 869 417 Provisions raised 371 610 341 Write-backs (150) (288) (131) Write-offs (269) (688) (248) Interest adjustment (11) (16) (11) Other adjustments 1 (7) 7 Closing balance 422 480 375 Collectively assessed provisions Opening balance 2,639 2,733 2,180 Provisions raised 668 699 610 Write-offs (858) (968) (742) Interest adjustment 179 188 148 Other adjustments 3 (13) 42 Closing balance 2,631 2,639 2,238 Total provisions for impairment charges on loans and credit commitments 3,053 3,119 2,613 Less provisions for credit commitments (refer to Note 27) (239) (253) (206) Total provisions for impairment charges on loans 2,814 2,866 2,407
Schedule of provisions for impairment charges on loans by industry classification	The following table presents provisions for expected credit losses (for 30 September 2019) and provisions for impairment charges (for prior years) on loans and credit commitments by industry classification for the past five years: Consolidated 2019 2018 2017 2016 2015 $m % $m % $m % $m % $m % Australia Accommodation, cafes and restaurants 75 1.9 62 2.0 67 2.1 95 2.7 86 2.6 Agriculture, forestry and fishing 93 2.4 69 2.3 59 1.9 74 2.1 115 3.4 Construction 148 3.8 93 3.0 86 2.8 86 2.4 85 2.5 Finance and insurance 55 1.4 67 2.2 53 1.7 131 3.7 124 3.7 Manufacturing 111 2.8 196 6.4 164 5.3 278 7.7 219 6.6 Mining 36 0.9 91 3.0 131 4.2 246 6.8 190 5.7 Property 216 5.5 204 6.7 240 7.7 287 8.0 314 9.4 Property services and business services 230 5.9 128 4.2 155 5.0 216 6.0 95 2.8 Services 175 4.5 137 4.5 126 4.0 116 3.2 56 1.7 Trade 242 6.2 199 6.5 183 5.9 213 5.9 209 6.3 Transport and storage 109 2.8 79 2.6 92 2.9 73 2.0 142 4.3 Utilities 17 0.4 13 0.4 15 0.5 9 0.2 27 0.8 Retail lending 1,890 48.3 1,200 39.3 1,229 39.4 1,102 30.6 1,046 31.4 Other 109 2.8 106 3.5 92 2.9 138 3.8 119 3.6 Total Australia 1 3,506 89.6 2,644 86.6 2,692 86.3 3,064 85.1 2,827 84.8 New Zealand Accommodation, cafes and restaurants 2 0.1 3 0.1 2 0.1 2 0.1 1 — Agriculture, forestry and fishing 67 1.7 77 2.5 93 3.0 120 3.3 64 1.9 Construction 9 0.2 16 0.5 9 0.3 9 0.2 9 0.3 Finance and insurance 2 0.1 3 0.1 3 0.1 4 0.1 3 0.1 Manufacturing 14 0.4 26 0.9 24 0.8 53 1.5 57 1.7 Mining — — 1 — 1 — 15 0.4 14 0.4 Property 20 0.5 27 0.9 38 1.2 52 1.4 62 1.9 Property services and business services 5 0.1 8 0.2 11 0.3 21 0.6 22 0.6 Services 9 0.2 9 0.3 14 0.4 13 0.4 12 0.4 Trade 15 0.4 21 0.7 17 0.5 18 0.5 25 0.8 Transport and storage 3 0.1 5 0.2 5 0.2 7 0.2 7 0.2 Utilities 1 — 2 0.1 3 0.1 4 0.1 2 0.1 Retail lending 173 4.4 130 4.3 130 4.2 125 3.5 128 3.8 Other 7 0.2 1 — — — 2 0.1 1 — Total New Zealand 1 327 8.4 329 10.8 350 11.2 445 12.4 407 12.2 Total other overseas 80 2.0 80 2.6 77 2.5 93 2.5 98 3.0 Total provisions for ECL/ impairment charges on loans and credit commitments 3,913 100.0 3,053 100.0 3,119 100.0 3,602 100.0 3,332 100.0 1. Comparatives have been restated to include industry segmentation for collectively assessed provisions.
Schedule of net loan write-offs and recoveries, by industry classification	The following table shows details of loan write-offs by industry classifications for the past five years: Consolidated $m Australia Accommodation, cafes and restaurants (12) (14) (38) (17) (40) Agriculture, forestry and fishing (4) (12) (10) (12) (36) Construction (13) (23) (30) (20) (40) Finance and insurance (4) (4) (6) (13) (12) Manufacturing (12) (12) (105) (21) (20) Mining (1) (14) (46) (18) (17) Property (31) (39) (76) (44) (104) Property services and business services (24) (44) (203) (43) (70) Services (7) (24) (97) (36) (18) Trade (62) (56) (59) (30) (56) Transport and storage (14) (17) (17) (48) (24) Utilities (1) (1) — (1) (2) Retail lending (903) (793) (898) (803) (658) Other (10) (5) (17) (13) (13) Total Australia (1,098) (1,058) (1,602) (1,119) (1,110) New Zealand Accommodation, cafes and restaurants — — — — — Agriculture, forestry and fishing (2) — — (1) (3) Construction — (1) (1) (1) — Finance and insurance — — — — — Manufacturing — — — — (1) Mining — — — — (28) Property — (13) (2) (10) (18) Property services and business services — — — (2) — Services — (1) — — (1) Trade (2) (1) (1) (1) (4) Transport and storage — — — — — Utilities — — — — — Retail lending (50) (53) (49) (51) (55) Other — — — (1) — Total New Zealand (54) (69) (53) (67) (110) Total other overseas (2) — (1) (3) (18) Total write-offs (1,154) (1,127) (1,656) (1,189) (1,238) The following table shows details of recoveries of loans by industry classifications for the past five years: Consolidated $m Recoveries Australia Accommodation, cafes and restaurants — 1 3 — — Agriculture, forestry and fishing — — — — — Construction 1 1 2 1 4 Finance and insurance — 1 1 34 8 Manufacturing 1 — 2 1 3 Mining — 1 1 — — Property 8 7 10 3 15 Property services and business services 1 1 3 2 2 Services — 1 — 2 1 Trade 2 2 3 1 1 Transport and storage 1 1 1 1 — Utilities — — — — — Retail lending 135 139 118 84 78 Other 5 — 5 2 1 Total Australia 154 155 149 131 113 Total New Zealand 18 24 19 6 18 Total other overseas — — — — — Total recoveries 172 179 168 137 131 Total write-offs (1,154) (1,127) (1,656) (1,189) (1,238) Net write-offs and recoveries (982) (948) (1,488) (1,052) (1,107)
Loans and credit commitments
Provisions for expected credit losses
Reconciliation of the provision for ECL	Consolidated Collectively Individually Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 2,631 422 3,053 Restatement for adoption of AASB 9 877 1,884 1,272 (2,631) (422) 980 Restated provision for ECL as at 1 October 2018 877 1,884 1,272 — — 4,033 Transfers to Stage 1 1,458 (1,404) (54) — — — Transfers to Stage 2 (242) 956 (714) — — — Transfers to Stage 3 (5) (621) 626 — — — Business activity during the year 179 (19) (330) — — (170) Net remeasurement of provision for ECL (1,385) 874 1,647 — — 1,136 Write-offs — — (1,154) — — (1,154) Exchange rate and other adjustments 2 4 62 — — 68 Total provision for ECL on loans and credit commitments as at 30 September 2019 884 1,674 1,355 — — 3,913 Presented as: Provision for ECL on credit commitments (refer to Note 27) 121 178 6 — — 305 Provision for ECL on loans (refer to Note 12) 763 1,496 1,349 — — 3,608 Total provision for ECL on loans and credit commitments as at 30 September 2019 884 1,674 1,355 — — 3,913 Of which: Individually assessed provisions — — 412 — — 412 Collectively assessed provisions 884 1,674 943 — — 3,501 Total provision for ECL on loans and credit commitments as at 30 September 2019 884 1,674 1,355 — — 3,913 The provisions for ECL on loans can be further disaggregated into the following classes: Consolidated Collectively Individually Housing loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 385 97 482 Restatement for adoption of AASB 9 130 351 501 (385) (97) 500 Restated provision for ECL as at 1 October 2018 130 351 501 — — 982 Transfers to Stage 1 343 (317) (26) — — — Transfers to Stage 2 (38) 396 (358) — — — Transfers to Stage 3 — (145) 145 — — — Business activity during the year 17 (35) (141) — — (159) Net remeasurement of provision for ECL (289) 104 567 — — 382 Write-offs — — (119) — — (119) Exchange rate and other adjustments — — 22 — — 22 Total provision for ECL on loans and credit commitments as at 30 September 2019 163 354 591 — — 1,108 Presented as: Provision for ECL on credit commitments (refer to Note 27) 5 2 — — — 7 Provision for ECL on loans (refer to Note 12) 158 352 591 — — 1,101 Total provision for ECL on loans and credit commitments as at 30 September 2019 163 354 591 — — 1,108 Consolidated Collectively Individually Personal loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 761 3 764 Restatement for adoption of AASB 9 263 589 240 (761) (3) 328 Restated provision for ECL as at 1 October 2018 263 589 240 — — 1,092 Transfers to Stage 1 849 (839) (10) — — — Transfers to Stage 2 (148) 368 (220) — — — Transfers to Stage 3 (2) (350) 352 — — — Business activity during the year 62 (18) (160) — — (116) Net remeasurement of provision for ECL (757) 708 838 — — 789 Write-offs — — (822) — — (822) Exchange rate and other adjustments 1 1 30 — — 32 Total provision for ECL on loans and credit commitments as at 30 September 2019 268 459 248 — — 975 Presented as: Provision for ECL on cedit commitments (refer to Note 27) 36 35 — — — 71 Provision for ECL on loans (refer to Note 12) 232 424 248 — — 904 Total provision for ECL on loans and credit commitments as at 30 September 2019 268 459 248 — — 975 Consolidated Collectively Individually Business loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 1,485 322 1,807 Restatement for adoption of AASB 9 484 944 531 (1,485) (322) 152 Restated provision for ECL as at 1 October 2018 484 944 531 — — 1,959 Transfers to Stage 1 266 (248) (18) — — — Transfers to Stage 2 (56) 192 (136) — — — Transfers to Stage 3 (3) (126) 129 — — — Business activity during the year 100 34 (29) — — 105 Net remeasurement of provision for ECL (339) 62 242 — — (35) Write-offs — — (213) — — (213) Exchange rate and other adjustments 1 3 10 — — 14 Total provision for ECL on loans and credit commitments as at 30 September 2019 453 861 516 — — 1,830 Presented as: Provision for ECL on credit commitments (refer to Note 27) 80 141 6 — — 227 Provision for ECL on loans (refer to Note 12) 373 720 510 — — 1,603 Total provision for ECL on loans and credit commitments as at 30 September 2019 453 861 516 — — 1,830 The following table reconciles the 30 September 2019 provision for ECL on loans and commitments for the Parent Entity based on the requirements of AASB 9. Parent Entity Collectively Individually Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 2,238 375 2,613 Restatement for adoption of AASB 9 741 1,605 1,113 (2,238) (375) 846 Restated provision for ECL as at 1 October 2018 741 1,605 1,113 — — 3,459 Transfers to Stage 1 1,191 (1,153) (38) — — — Transfers to Stage 2 (220) 860 (640) — — — Transfers to Stage 3 (3) (554) 557 — — — Business activity during the year 168 7 (358) — — (183) Net remeasurement of provision for ECL (1,130) 654 1,552 — — 1,076 Write-offs — — (1,023) — — (1,023) Exchange rate and other adjustments — 1 48 — — 49 Total provision for ECL on loans and credit commitments as at 30 September 2019 747 1,420 1,211 — — 3,378 Presented as: Provision for ECL on credit commitments (refer to Note 27) 107 163 5 — — 275 Provision for ECL on loans (refer to Note 12) 640 1,257 1,206 — — 3,103 Total provision for ECL on loans and credit commitments as at 30 September 2019 747 1,420 1,211 — — 3,378 Of which: Individually assessed provisions — — 364 — — 364 Collectively assessed provisions 747 1,420 847 — — 3,014 Total provision for ECL on loans and credit commitments as at 30 September 2019 747 1,420 1,211 — — 3,378 Parent Entity Collectively Individually Housing loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 516 82 598 Restatement for adoption of AASB 9 105 334 402 (516) (82) 243 Restated provision for ECL as at 1 October 2018 105 334 402 — — 841 Transfers to Stage 1 322 (302) (20) — — — Transfers to Stage 2 (36) 386 (350) — — — Transfers to Stage 3 — (141) 141 — — — Business activity during the year 15 (33) (127) — — (145) Net remeasurement of provision for ECL (265) 91 606 — — 432 Write-offs — — (115) — — (115) Exchange rate and other adjustments — — 20 — — 20 Total provision for ECL on loans and credit commitments as at 30 September 2019 141 335 557 — — 1,033 Presented as: Provision for ECL on credit commitments (refer to Note 27) 4 1 — — — 5 Provision for ECL on loans (refer to Note 12) 137 334 557 — — 1,028 Total provision for ECL on loans and credit commitments as at 30 September 2019 141 335 557 — — 1,033 The provisions for ECL on loans can be further disaggregated into the following classes: Parent Entity Collectively Individually Personal loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 524 3 527 Restatement for adoption of AASB 9 215 540 200 (524) (3) 428 Restated provision for ECL as at 1 October 2018 215 540 200 — — 955 Transfers to Stage 1 635 (633) (2) — — — Transfers to Stage 2 (138) 319 (181) — — — Transfers to Stage 3 (1) (311) 312 — — — Business activity during the year 62 (11) (158) — — (107) Net remeasurement of provision for ECL (544) 497 753 — — 706 Write-offs — — (733) — — (733) Exchange rate and other adjustments — — 22 — — 22 Total provision for ECL on loans and credit commitments as at 30 September 2019 229 401 213 — — 843 Presented as: Provision for ECL on credit commitments (refer to Note 27) 29 32 — — — 61 Provision for ECL on loans (refer to Note 12) 200 369 213 — — 782 Total provision for ECL on loans and credit commitments as at 30 September 2019 229 401 213 — — 843 Parent Entity Collectively Individually Business loans Performing Non-performing assessed assessed $m Stage 1 Stage 2 Stage 3 provisions provisions Total Provision for impairment charges as at 30 September 2018 — — — 1,198 290 1,488 Restatement for adoption of AASB 9 421 731 511 (1,198) (290) 175 Restated provision for ECL as at 1 October 2018 421 731 511 — — 1,663 Transfers to Stage 1 234 (218) (16) — — — Transfers to Stage 2 (46) 155 (109) — — — Transfers to Stage 3 (2) (102) 104 — — — Business activity during the year 91 51 (73) — — 69 Net remeasurement of provision for ECL (321) 66 193 — — (62) Write-offs — — (175) — — (175) Exchange rate and other adjustments — 1 6 — — 7 Total provision for ECL on loans and credit commitments as at 30 September 2019 377 684 441 — — 1,502 Presented as: Provision for ECL on credit commitments (refer to Note 27) 74 130 5 — — 209 Provision for ECL on loans (refer to Note 12) 303 554 436 — — 1,293 Total provision for ECL on loans and credit commitments as at 30 September 2019 377 684 441 — — 1,502
Debt securities
Provisions for expected credit losses
Reconciliation of the provision for ECL	Investment Securities – debt securities The following table reconciles the 30 September 2019 provision for ECL on debt securities based on the requirements of AASB 9. Total Debt Investment Debt securities at securities - securities at amortised debt $m FVOCI 1 cost securities Consolidated Provision for impairment charges as at 30 September 2018 — — — Restatement for adoption of AASB 9 2 9 11 Restated provision for ECL as at 1 October 2018 2 9 11 Stage 1 - change in the provision during the year — — — Total provision for ECL on investment securities - debt securities as at 30 September 2019 2 9 11 Parent Entity Provision for impairment charges as at 30 September 2018 — — — Restatement for adoption of AASB 9 2 — 2 Restated provision for ECL as at 1 October 2018 2 — 2 Stage 1 - change in the provision during the year — — — Total provision for ECL on investment securities - debt securities as at 30 September 2019 2 — 2 1. Impairment on debt securities at FVOCI is recognised in the income statement with a corresponding amount in other comprehensive income (refer to Note 28). There is no reduction of the carrying value of the debt securities which remain at fair value (refer to Note 11).

Other financial assets (Tables)

Other financial assets (Tables)	12 Months Ended
	Sep. 30, 2019
Other financial assets
Schedule of other financial assets	Note 14. Other financial assets 1 Consolidated Parent Entity $m Accrued interest receivable 1,144 1,276 1,005 1,103 Securities sold not delivered 1,687 1,264 1,668 1,264 Trade debtors 998 1,056 517 514 Interbank lending 514 953 510 939 Clearing and settlement balances 750 736 706 678 Accrued fees and commissions 159 129 95 60 Other 115 103 114 108 Total other financial assets 5,367 5,517 4,615 4,666 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Life insurance assets and lif_2

Life insurance assets and life insurance liabilities (Tables)	12 Months Ended
	Sep. 30, 2019
Life insurance assets and life insurance liabilities
Schedule of life insurance assets and life insurance liabilities	Life insurance assets Consolidated $m Investments held directly and in unit trusts Unit trusts 6,764 6,545 Equities 989 1,223 Debt securities 1,589 1,622 Loans and other assets 25 60 Total life insurance assets 9,367 9,450 Life insurance liabilities Consolidated Life investment Life insurance Reconciliation of movements in policy liabilities contracts contracts Total $m Opening balance 8,438 9,854 (841) (835) 7,597 9,019 Movements in policy liabilities reflected in the income statement 504 704 12 (6) 516 698 Contract contributions recognised in policy liabilities 898 738 — — 898 738 Contract withdrawals recognised in policy liabilities (1,218) (1,115) — — (1,218) (1,115) Contract fees, expenses and tax recoveries (73) (104) — — (73) (104) Change in external unit holders of managed investment schemes (343) (1,639) — — (343) (1,639) Closing balance 8,206 8,438 (829) (841) 7,377 7,597

Deposits and other borrowings (

Deposits and other borrowings (Tables)	12 Months Ended
	Sep. 30, 2019
Deposits and other borrowings
Schedule of total deposits and other borrowings	Consolidated Parent Entity $m Australia Certificates of deposit 26,259 28,746 26,259 28,746 Non-interest bearing, repayable at call 43,341 41,783 43,341 41,783 Other interest bearing at call 247,161 233,052 247,161 233,052 Other interest bearing term 158,564 171,832 158,564 171,832 Total Australia 475,325 475,413 475,325 475,413 New Zealand Certificates of deposit 1,058 1,116 — — Non-interest bearing, repayable at call 6,368 5,406 — — Other interest bearing at call 22,291 21,368 — — Other interest bearing term 31,084 29,897 — 3 Total New Zealand 60,801 57,787 — 3 Other overseas Certificates of deposit 11,414 11,672 11,414 11,672 Non-interest bearing, repayable at call 824 830 385 352 Other interest bearing at call 1,610 1,638 1,233 1,249 Other interest bearing term 13,273 11,945 13,073 11,779 Total other overseas 27,121 26,085 26,105 25,052 Total deposits and other borrowings 563,247 559,285 501,430 500,468
Schedule of average balances and average rates for major categories of deposits	2019 2018 2017 Average Average Average Average Average Average balance rate Balance rate balance rate Consolidated $m % $m % $m % Australia Non-interest bearing 42,455 41,156 39,355 Certificates of deposit 30,367 2.0 % 31,424 2.0 % 33,350 2.0 % Other interest bearing at call 237,420 1.1 % 228,328 1.2 % 222,122 1.1 % Other interest bearing term 158,012 2.4 % 162,254 2.5 % 154,114 2.7 % Total Australia 468,254 463,162 448,941 Overseas Non-interest bearing 6,815 6,021 5,527 Certificates of deposit 11,854 2.6 % 13,008 1.9 % 13,151 1.4 % Other interest bearing at call 23,616 1.1 % 23,017 1.2 % 24,163 1.3 % Other interest bearing term 45,520 3.0 % 41,942 2.8 % 37,813 2.7 % Total overseas 87,805 83,988 80,654
Schedule of maturities of certificates of deposit and term deposits greater than $100,000	Between Between 6 Months Consolidated 2019 Less Than 3 and and $m 3 Months 6 Months 1 Year Over 1 Year Total Certificates of deposit greater than US$100,000 Term deposits greater than US$100,000

Other financial liabilities (Ta

Other financial liabilities (Tables)	12 Months Ended
	Sep. 30, 2019
Other financial liabilities
Schedule of other financial liabilities	Note 17. Other financial liabilities 1 Consolidated Parent Entity $m Repurchase agreements 10,604 9,522 10,604 9,522 Interbank placements 9,884 8,848 9,834 8,829 Accrued interest payable 2,627 2,968 2,312 2,633 Securities purchased not delivered 1,398 1,343 1,395 1,343 Trade creditors and other accrued expenses 1,154 1,410 927 1,125 Settlement and clearing balances 1,222 1,347 1,197 1,333 Securities sold short 766 780 766 780 Other 1,560 1,887 1,481 1,701 Total other financial liabilities 28,105 27,266 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Debt issues (Tables)

Debt issues (Tables)	12 Months Ended
	Sep. 30, 2019
Debt issues
Schedule of debt issues and movement reconciliation	Consolidated Parent Entity $m Short-term debt: Own issuances 25,838 26,266 23,695 26,266 Total short-term debt 25,838 26,266 23,695 26,266 Long-term debt: Covered bonds 38,037 35,434 33,160 30,268 Senior 109,340 103,159 99,819 95,754 Securitisation 8,190 7,588 — — Structured notes 52 149 — — Total long-term debt 155,619 146,330 132,979 126,022 Total debt issues 181,457 172,596 156,674 152,288 Movement Reconciliation ($m) Opening balance 172,596 168,356 152,288 144,116 Issuances 61,484 59,456 50,375 57,440 Maturities, repayments, buy backs and reductions (63,313) (64,698) (56,347) (58,005) Total cash movements (1,829) (5,242) (5,972) (565) Foreign exchange translation impact 6,713 11,022 6,514 10,252 Fair value adjustments 317 (244) 318 (240) Fair value hedge accounting adjustments 3,512 (1,313) 3,376 (1,288) Other (amortisation of bond issue costs, etc.) 148 17 150 13 Total non-cash movements 10,690 9,482 10,358 8,737 Closing balance 181,457 172,596 156,674 152,288
Schedule of debt issues by type and currency	Consolidated $m Short-term debt Own issuances: US commercial paper 19,950 18,675 Senior debt: AUD 100 550 GBP 5,366 6,604 Other 422 437 Total own issuances 25,838 26,266 Total short-term debt 25,838 26,266 Long-term debt (by currency): AUD 43,532 37,571 CHF 3,480 2,953 EUR 37,464 31,734 GBP 5,545 5,290 JPY 2,538 3,226 NZD 3,197 2,294 USD 54,490 60,336 Other 5,373 2,926 Total long-term debt 155,619 146,330
Summary of short-term borrowings	Consolidated $m Short-term borrowings US commercial paper Maximum amount outstanding at any month end 26,879 28,331 27,456 Approximate average amount outstanding 22,502 23,315 23,025 Approximate weighted average interest rate on: Average amount outstanding 2.8 % 2.0 % 1.3 % Outstanding as at end of the year 3.2 % 2.5 % 1.2 %

Loan Capital (Tables)

Loan Capital (Tables)	12 Months Ended
	Sep. 30, 2019
Loan capital
Schedule of loan capital	Consolidated and Parent Entity $m Additional Tier 1 (AT1) loan capital Westpac capital notes 7,411 7,370 USD AT1 securities 1,913 1,585 Total AT1 loan capital 9,324 8,955 Tier 2 loan capital Subordinated notes 11,981 7,822 Subordinated perpetual notes 521 488 Total Tier 2 loan capital 12,502 8,310 Total loan capital 21,826 17,265 Movement Reconciliation ($m) Opening balance 17,265 17,666 Issuances 4,935 2,342 Maturities, repayments, buy backs and reductions (1,662) (2,387) Total cash movements 3,273 (45) Foreign exchange translation impact 521 449 Fair value hedge accounting adjustments 748 (257) Conversion of Convertible preference shares to ordinary shares — (566) Other (amortisation of bond issue costs, etc.) 19 18 Total non-cash movements 1,288 (356) Closing balance 21,826 17,265
Additional Tier 1 (AT1) loan capital
Loan capital
Schedule of loan capital	A summary of the key terms and common features of AT1 instruments are provided below 1 . Consolidated and Parent Entity Potential scheduled Optional $m Distribution interest rate conversion date 2 redemption date 3 Westpac capital notes (WCN) $1,384 million WCN (90 day bank bill rate + 3.20% p.a.) 8 March 2021 8 March 2019 4 — 1,382 x (1 - Australian corporate tax rate) $1,311 million WCN2 (90 day bank bill rate + 3.05% p.a.) 23 September 2024 23 September 2022 1,308 1,305 x (1 - Australian corporate tax rate) $1,324 million WCN3 (90 day bank bill rate + 4.00% p.a.) 22 March 2023 22 March 2021 1,319 1,316 x (1 - Australian corporate tax rate) $1,702 million WCN4 (90 day bank bill rate + 4.90% p.a.) 20 December 2023 20 December 2021 1,694 1,691 x (1 - Australian corporate tax rate) $1,690 million WCN5 (90 day bank bill rate + 3.20% p.a.) 22 September 2027 22 September 2025 1,677 1,676 x (1 - Australian corporate tax rate) $1,423 million WCN6 (90 day bank bill rate + 3.70% p.a.) 31 July 2026 31 July 2024 1,413 — x (1 - Australian corporate tax rate) Total Westpac capital notes 7,411 7,370 USD AT1 securities US$1,250 million securities 5.00% p.a. until but excluding 21 September 2027 n/a 21 September 2027 6 1,913 1,585 (first reset date). If not redeemed, converted or written-off earlier, from, and including, each reset date 5 to, but excluding, the next succeeding reset date, at a fixed rate p.a. equal to the prevailing 5- year USD mid-market swap rate plus 2.89% p.a. Total USD AT1 securities 1,913 1,585 1. A$ unless otherwise noted. 2. Conversion is subject to the satisfaction of the scheduled conversion conditions. If the conversion conditions are not satisfied on the relevant scheduled conversion date, conversion will not occur until the next distribution payment date on which the scheduled conversion conditions are satisfied. 3. Westpac may elect to redeem the relevant AT1 instrument, subject to APRA’s prior written approval. 4. On 18 December 2018, $722 million of WCN were transferred to the WCN nominated party for $100 each pursuant to the Westpac Capital Note 6 reinvestment offer. Those WCN were subsequently redeemed by Westpac. On 8 March 2019, the remaining $662 million of WCN were transferred to the WCN nominated party for $100 each. Following the transfer, those remaining WCN were redeemed by Westpac. 5. 21 September 2027 and every fifth anniversary thereafter is a reset date. 6. Westpac may elect to redeem on 21 September 2027 and every fifth anniversary thereafter.
Tier 2 loan capital
Loan capital
Schedule of loan capital	A summary of the key terms and common features of Westpac’s Tier 2 instruments are provided below 1 : Consolidated and Parent Entity Optional $m Interest rate 2 Maturity date redemption date 3 Subordinated notes A$1,000 million subordinated notes 90 day bank bill rate + 2.05% p.a. 14 March 2024 14 March 2019 4 — 999 CNY1,250 million subordinated notes 4.85% p.a. until but excluding 9 February 2020. Thereafter, if not redeemed, a fixed rate per annum equal to the one-year CNH HIBOR reference rate plus 0.8345% p.a. 9 February 2025 9 February 2020 260 252 A$350 million subordinated notes 4.50% p.a. until but excluding 11 March 2022. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year AUD semi-quarterly mid-swap reference rate plus 1.95% p.a., the sum of which will be annualised. 11 March 2027 11 March 2022 362 347 S$325 million subordinated notes 4.00% p.a. until but excluding 12 August 2022. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year SGD swap offer rate plus 1.54% p.a. 12 August 2027 12 August 2022 356 330 A$175 million subordinated notes 4.80% p.a. until but excluding 14 June 2023. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year AUD semi-quarterly mid-swap reference rate plus 2.65% p.a., each of which will be annualised. 14 June 2028 14 June 2023 182 171 US$100 million subordinated notes Fixed 5.00% p.a. 23 February 2046 n/a 161 114 A$700 million subordinated notes Floating 90 day bank bill rate + 3.10% p.a. 10 March 2026 10 March 2021 697 700 JPY20,000 million subordinated notes Fixed 1.16% p.a. 19 May 2026 n/a 279 242 JPY10,200 million subordinated notes Fixed 1.16% p.a. 2 June 2026 n/a 142 123 JPY10,000 million subordinated notes Fixed 0.76% p.a. 9 June 2026 n/a 139 120 NZ$400 million subordinated notes 4.6950% p.a. until but excluding 1 September 2021. Thereafter, if not redeemed, a fixed rate per annum equal to the New Zealand 5-year swap rate on 1 September 2021 plus 2.60% p.a. 1 September 2026 1 September 2021 373 358 JPY8,000 million subordinated notes 0.9225% p.a until but excluding 7 October 2021. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year JPY mid-swap rate plus 1.0005% p.a. 7 October 2026 7 October 2021 110 97 US$1,500 million subordinated notes 4.322% p.a. until but excluding 23 November 2026. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year USD mid-swap rate plus 2.236% p.a. 23 November 2031 23 November 2026 2,297 1,922 JPY12,000 million subordinated notes 0.87% p.a. until but excluding 6 July 2022. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year JPY mid-swap rate plus 0.78% p.a. 6 July 2027 6 July 2022 166 146 JPY13,500 million subordinated notes 0.868% p.a. until but excluding 6 July 2022. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year JPY mid-swap rate plus 0.778% p.a. 6 July 2027 6 July 2022 187 165 HKD600 million subordinated notes 3.15% p.a. until but excluding 14 July 2022. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year HKD mid-swap rate plus 1.34% p.a. 14 July 2027 14 July 2022 114 102 A$350 million subordinated notes 4.334% p.a. until but excluding 16 August 2024. Thereafter, if not redeemed, a fixed rate per annum equal to the five-year AUD semi-quarterly mid-swap reference rate plus 1.83% p.a., each of which will be annualised. 16 August 2029 16 August 2024 349 347 A$185 million subordinated notes Fixed 5.00% p.a. 24 January 2048 n/a 185 185 A$250 million subordinated notes 90 day bank bill rate + 1.40% p.a. 16 February 2028 16 February 2023 250 250 A$130 million subordinated notes Fixed 5.00% p.a. 2 March 2048 n/a 130 130 A$725 million subordinated notes 90 day bank bill rate + 1.80% p.a. 22 June 2028 22 June 2023 724 722 US$1,000 million subordinated notes Fixed 4.421% p.a. 24 July 2039 n/a 1,606 — US$1,250 million subordinated notes 4.110% p.a. until but excluding 24 July 2029. Thereafter, if not redeemed a fixed rate per annum equal to the five-year USD treasury rate plus 2% p.a. 24 July 2034 24 July 2029 1,921 — A$1,000 million subordinated notes Floating 90 day bank bill rate + 1.98% p.a. 27 August 2029 27 August 2024 991 — Total subordinated notes 11,981 7,822 1. Excludes subordinated perpetual notes. 2. Interest payments are made periodically as set out in the terms of the subordinated notes. 3. Westpac may elect to redeem the relevant Tier 2 instrument on the optional redemption date or dates, subject to APRA's prior written approval. If not redeemed on the first optional redemption date, Westpac may elect to redeem the relevant Tier 2 instrument on any interest payment date after the first optional redemption date (except for US$1,500 million subordinated notes and US$1,250 million subordinated notes), subject to APRA's prior written approval. 4. The subordinated notes were redeemed in full on the optional redemption date.

Derivative financial instrume_2

Derivative financial instruments (Tables)	12 Months Ended
	Sep. 30, 2019
Derivative financial instruments
Summary of carrying values of derivative instruments	Consolidated 2019 Total derivatives Trading Hedging carrying value $m Assets Liabilities Assets Liabilities Assets Liabilities Interest rate contracts 1 Forward rate agreements 35 (36) — — 35 (36) Swap agreements 38,383 (37,051) 4,073 (7,568) 42,456 (44,619) Options 294 (303) — — 294 (303) Total interest rate contracts 38,712 (37,390) 4,073 (7,568) 42,785 (44,958) Foreign exchange contracts Spot and forward contracts 6,857 (6,393) 181 (3) 7,038 (6,396) Cross currency swap agreements (principal and interest) 8,934 (12,478) 2,172 (69) 11,106 (12,547) Options 200 (111) — - 200 (111) Total foreign exchange contracts 15,991 (18,982) 2,353 (72) 18,344 (19,054) Credit default swaps Credit protection purchased — (88) — — — (88) Credit protection sold 83 - — — 83 — Total credit default swaps 83 (88) — — 83 (88) Commodity contracts 251 (187) — — 251 (187) Equities 1 (1) — — 1 (1) Total of gross derivatives 55,038 (56,648) 6,426 (7,640) 61,464 (64,288) Impact of netting arrangements (27,968) 28,703 (3,637) 6,489 (31,605) 35,192 Total of net derivatives 27,070 (27,945) 2,789 (1,151) 29,859 (29,096) Consolidated 2018 Total derivatives Trading Hedging carrying value $m Assets Liabilities Assets Liabilities Assets Liabilities Interest rate contracts 1 Forward rate agreements 11 (12) — — 11 (12) Swap agreements 15,626 (15,580) 890 (5,301) 16,516 (20,881) Options 165 (167) — — 165 (167) Total interest rate contracts 15,802 (15,759) 890 (5,301) 16,692 (21,060) Foreign exchange contracts Spot and forward contracts 6,741 (6,418) — (32) 6,741 (6,450) Cross currency swap agreements (principal and interest) 6,561 (9,019) 2,365 (182) 8,926 (9,201) Options 120 (184) — — 120 (184) Total foreign exchange contracts 13,422 (15,621) 2,365 (214) 15,787 (15,835) Credit default swaps Credit protection purchased 3 (101) — — 3 (101) Credit protection sold 99 - — — 99 — Total credit default swaps 102 (101) — — 102 (101) Commodity contracts 246 (300) — — 246 (300) Equities 1 — — — 1 — Total of gross derivatives 29,573 (31,781) 3,255 (5,515) 32,828 (37,296) Impact of netting arrangements (8,222) 8,912 (505) 3,977 (8,727) 12,889 Total of net derivatives 21,351 (22,869) 2,750 (1,538) 24,101 (24,407) 1. The fair value of futures contracts are settled daily with the exchange, and therefore have been excluded from this table. Parent Entity 2019 Total derivatives Trading Hedging carrying value $m Assets Liabilities Assets Liabilities Assets Liabilities Interest rate contracts 1 Forward rate agreements 35 (36) — — 35 (36) Swap agreements 38,489 (37,438) 3,955 (7,018) 42,444 (44,456) Options 294 (303) — — 294 (303) Total interest rate contracts 38,818 (37,777) 3,955 (7,018) 42,773 (44,795) Foreign exchange contracts Spot and forward contracts 6,987 (6,389) 46 (3) 7,033 (6,392) Cross currency swap agreements (principal and interest) 8,934 (12,479) 1,613 (6) 10,547 (12,485) Options 200 (111) — — 200 (111) Total foreign exchange contracts 16,121 (18,979) 1,659 (9) 17,780 (18,988) Credit default swaps Credit protection purchased — (88) — — — (88) Credit protection sold 83 — — — 83 - Total credit default swaps 83 (88) — — 83 (88) Commodity contracts 251 (187) — — 251 (187) Equities 1 (1) — — 1 (1) Total of gross derivatives 55,274 (57,032) 5,614 (7,027) 60,888 (64,059) Impact of netting arrangements (27,968) 28,703 (3,637) 6,489 (31,605) 35,192 Total of net derivatives 27,306 (28,329) 1,977 (538) 29,283 (28,867) Parent Entity 2018 Total derivatives Trading Hedging carrying value $m Assets Liabilities Assets Liabilities Assets Liabilities Interest rate contracts 1 Forward rate agreements 11 (12) — — 11 (12) Swap agreements 15,659 (15,751) 841 (5,012) 16,500 (20,763) Options 165 (167) — — 165 (167) Total interest rate contracts 15,835 (15,930) 841 (5,012) 16,676 (20,942) Foreign exchange contracts Spot and forward contracts 6,737 (6,417) — (31) 6,737 (6,448) Cross currency swap agreements (principal and interest) 6,562 (9,019) 1,845 (124) 8,407 (9,143) Options 120 (184) — — 120 (184) Total foreign exchange contracts 13,419 (15,620) 1,845 (155) 15,264 (15,775) Credit default swaps Credit protection purchased 3 (101) — — 3 (101) Credit protection sold 99 — — — 99 — Total credit default swaps 102 (101) — — 102 (101) Commodity contracts 246 (300) — — 246 (300) Equities 1 — — — 1 — Total of gross derivatives 29,603 (31,951) 2,686 (5,167) 32,289 (37,118) Impact of netting arrangements (8,222) 8,912 (505) 3,977 (8,727) 12,889 Total of net derivatives 21,381 (23,039) 2,181 (1,190) 23,562 (24,229) 1. The fair value of futures contracts are settled daily with the exchange, and therefore have been excluded from this table.
Schedule of carrying values, and maturity analysis of notional amounts of hedging instruments	Consolidated 2019 Notional amounts Over Within 1 year to Over Carrying value $m Hedging instrument Hedged risk 1 year 5 years 5 years Total Assets Liabilities One-to-one hedge relationships Fair value hedges Interest rate swap Interest rate risk 16,322 61,707 48,271 126,300 2,548 (5,672) Cross currency swap Interest rate risk 5,632 12,870 1,708 20,210 584 (69) Cash flow hedges Cross currency swap Foreign exchange risk 5,632 15,386 1,708 22,726 1,588 — Net investment hedges Forward contracts Foreign exchange risk 8,152 — — 8,152 181 (3) Total one-to-one hedge relationships 35,738 89,963 51,687 177,388 4,901 (5,744) Macro hedge relationships Portfolio fair value hedges Interest rate swap Interest rate risk n/a n/a n/a 18,813 — (194) Macro cash flow hedges Interest rate swap Interest rate risk n/a n/a n/a 176,828 1,525 (1,702) Total macro hedge relationships n/a n/a n/a 195,641 1,525 (1,896) Total of gross hedging derivatives n/a n/a n/a 373,029 6,426 (7,640) Impact of netting arrangements n/a n/a n/a n/a (3,637) 6,489 Total of net hedging derivatives n/a n/a n/a n/a 2,789 (1,151) Parent 2019 Notional amounts Over 1 Within year to Over Carrying value $m Hedging instrument Hedged risk 1 year 5 years 5 years Total Assets Liabilities One-to-one hedge relationships Fair value hedges Interest rate swap Interest rate risk 14,323 59,842 47,881 122,046 2,535 (5,475) Cross currency swap Interest rate risk 4,473 7,185 1,384 13,042 441 — Cash flow hedges Cross currency swap Foreign exchange risk 4,473 7,185 1,384 13,042 1,172 (6) Net investment hedges Forward contracts Foreign exchange risk 2,315 — — 2,315 46 (3) Total one-to-one hedge relationships 25,584 74,212 50,649 150,445 4,194 (5,484) Macro hedge relationships Portfolio fair value hedges Interest rate swap Interest rate risk n/a n/a n/a — — — Macro cash flow hedges Interest rate swap Interest rate risk n/a n/a n/a 166,978 1,420 (1,543) Total macro hedge relationships n/a n/a n/a 166,978 1,420 (1,543) Total of gross hedging derivatives n/a n/a n/a 317,423 5,614 (7,027) Impact of netting arrangements n/a n/a n/a n/a (3,637) 6,489 Total of net hedging derivatives n/a n/a n/a n/a 1,977 (538)
Schedule of weighted average rates of significant hedging instruments	Consolidated 2019 Currency / Weighted $m Hedging instrument Hedged risk Currency pair average rate Cash flow hedges Cross currency swap Foreign exchange risk EUR:AUD 0.6929 EUR:NZD 0.6079 HKD:NZD 4.9670 Net investment hedges Forward contracts Foreign exchange risk NZD:AUD 1.0545 Parent Entity 2019 Currency / Weighted $m Hedging instrument Hedged risk Currency pair average rate Cash flow hedges Cross currency swap Foreign exchange risk EUR:AUD 0.6929 JPY:AUD 81.4507 CNH:AUD 4.9328 Net investment hedges Forward contracts Foreign exchange risk NZD:AUD 1.0546
Schedule of impact of hedge accounting on the balance sheet and reserves	Consolidated 2019 Accumulated fair value hedge adjustment Carrying amount of included in carrying $m hedged item amount Interest rate risk Investment securities 53,273 2,815 Loans 19,235 133 Debt issues and loan capital (100,909) (2,818) Parent Entity 2019 Accumulated fair value hedge adjustment Carrying amount of included in carrying $m hedged item amount Interest rate risk Investment securities 49,132 2,704 Loans 421 5 Debt issues and loan capital (93,296) (2,661)
Schedule of pre-tax impact of cash flow and net investment hedges on reserves	Consolidated 2019 $m Interest rate risk Foreign exchange risk Total Cash flow hedge reserve Balance at beginning of the year (87) (89) (176) Net gains/(losses) from changes in fair value (158) (45) (203) Transferred to interest income 146 51 197 Balance at end of year (99) (83) (182) Parent Entity 2019 $m Interest rate risk Foreign exchange risk Total Cash flow hedge reserve Balance at beginning of the year (42) (57) (99) Net gains/(losses) from changes in fair value (130) 9 (121) Transferred to interest income 102 26 128 Balance at end of year (70) (22) (92)
Schedule of information regarding determination of hedge effectiveness	The following tables provide information regarding the determination of hedge effectiveness: Change in fair value Change in of hedging value of the Hedge instrument hedged item Hedge ineffectiveness used for used for ineffectiveness recognised in Consolidated 2019 calculating calculating recognised in non-interest $m Hedging instrument Hedged risk ineffectiveness ineffectiveness interest income income Fair value hedges Interest rate swap Interest rate risk 1,532 (1,512) 20 n/a Cross currency swap Interest rate risk 192 (190) 2 n/a Cash flow hedges Interest rate swap Interest rate risk (6) 12 6 n/a Cross currency swap Foreign exchange risk 6 (6) — n/a Net investment hedges Forward contracts Foreign exchange risk (129) 129 n/a — Total 1,595 (1,567) 28 — Change in fair value Change in of hedging value of the Hedge instrument hedged item Hedge ineffectiveness used for used for ineffectiveness recognised in Parent Entity 2019 calculating calculating recognised in non-interest $m Hedging instrument Hedged risk ineffectiveness ineffectiveness interest income income Fair value hedges Interest rate swap Interest rate risk 1,684 (1,664) 20 n/a Cross currency swap Interest rate risk 56 (57) (1) n/a Cash flow hedges Interest rate swap Interest rate risk (21) 28 7 n/a Cross currency swap Foreign exchange risk 35 (35) — n/a Net investment hedges Forward contracts Foreign exchange risk (52) 52 n/a — Total 1,702 (1,676) 26 — Comparative year information under prior AASB 7 disclosure requirements Ineffectiveness of hedge relationships Fair value hedges 2018 $m Consolidated Parent Entity Change in fair value hedging instruments (1,203) (1,208) Change in fair value hedge items attributed to hedged risk 1,192 1,197 Ineffectiveness in interest income (11) (11) Cash flow hedges 2018 $m Consolidated Parent Entity Cash flow hedge ineffectiveness (7) (11)
Schedule of cash inflows and outflows on derivatives designated in cash flow hedges	Less than 1 month to 3 months 1 year to 2 years to 3 years to 4 years to over 2018 1 month 3 months to 1 year 2 years 3 years 4 years 5 years 5 years Cash inflows 0.3 % 2.1 % 21.8 % 23.8 % 18.9 % 19.1 % 4.7 % 9.3 % Cash outflows 0.5 % 1.8 % 22.4 % 23.0 % 19.5 % 18.0 % 4.9 % 9.9 %

Financial risk (Tables)

Financial risk (Tables)	12 Months Ended
	Sep. 30, 2019
Financial risk
Schedule of high level CRGs and corresponding external rating	Transaction-managed Financial statement disclosure Westpac CRG Moody’s Rating S&P Rating Strong A Aaa – Aa3 AAA – AA– B A1 – A3 A+ – A– C Baa1 – Baa3 BBB+ – BBB– Good/satisfactory D Ba1 – B1 BB+ – B+ Westpac Rating Weak E Watchlist F Special Mention Weak/default/non-performing G Substandard/Default H Default
Summary of credit concentrations for each significant class of financial asset	The credit concentrations for each significant class of financial asset are: 1 Trading securities and financial assets measured at FVIS (Note 10) ▪ 45% (2018: 41%) were issued by financial institutions for the Group; 44% (2018: 40%) for the Parent Entity. ▪ 51% (2018: 55%) were issued by government or semi-government authorities for the Group; 52% (2018: 56%) for the Parent Entity. ▪ 71% (2018: 73%) were held in Australia by the Group; 75% (2018: 76%) by the Parent Entity. Available-for-sale securities / Investment securities (Note 11) ▪ 24% (2018: 27%) were issued by financial institutions for the Group; 25% (2018: 28%) for the Parent Entity. ▪ 75% (2018: 73%) were issued by government or semi-government authorities for the Group; 75% (2018: 72%) for the Parent Entity. ▪ 90% (2018: 89%) were held in Australia by the Group; 97% (2018: 96%) by the Parent Entity. Loans (Note 12) ▪ Note 12 provides a detailed breakdown of loans by industry and geographic classification. Derivative financial instruments (Note 20) ▪ 72% (2018: 79%) were issued by financial institutions for both the Group and Parent Entity. ▪ 78% (2018: 84%) were held in Australia by the Group; 80% (2017: 86%) by the Parent Entity. 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentation changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail.
Schedule of gross credit risk	2019 2018 1 Total on Undrawn Total on Undrawn Consolidated balance credit balance credit $m sheet commitments Total sheet commitments Total Australia Accommodation, cafes and restaurants 8,061 1,070 9,131 8,316 1,404 9,720 Agriculture, forestry and fishing 9,250 2,014 11,264 8,662 2,035 10,697 Construction 7,229 3,340 10,569 6,764 3,324 10,088 Finance and insurance 73,052 7,316 80,368 68,002 7,781 75,783 Government, administration and defence 63,582 1,766 65,348 50,757 728 51,485 Manufacturing 10,504 5,850 16,354 9,979 5,738 15,717 Mining 3,325 3,802 7,127 3,641 3,079 6,720 Property 45,467 10,119 55,586 45,871 12,309 58,180 Property services and business services 14,191 5,898 20,089 13,577 5,596 19,173 Services 12,340 6,523 18,863 12,312 5,700 18,012 Trade 16,593 7,677 24,270 16,866 7,951 24,817 Transport and storage 9,529 5,114 14,643 9,599 4,958 14,557 Utilities 5,567 4,487 10,054 5,291 3,471 8,762 Retail lending 467,206 84,057 551,263 464,329 86,421 550,750 Other 6,668 2,740 9,408 7,924 1,597 9,521 Total Australia 752,564 151,773 904,337 731,890 152,092 883,982 New Zealand Accommodation, cafes and restaurants 356 36 392 324 39 363 Agriculture, forestry and fishing 8,631 607 9,238 8,205 684 8,889 Construction 503 350 853 505 429 934 Finance and insurance 11,685 1,507 13,192 8,368 1,437 9,805 Government, administration and defence 6,667 856 7,523 4,867 691 5,558 Manufacturing 2,079 1,758 3,837 2,312 1,577 3,889 Mining 289 29 318 213 101 314 Property 6,977 1,120 8,097 6,252 1,035 7,287 Property services and business services 1,300 557 1,857 1,110 512 1,622 Services 2,023 577 2,600 1,762 613 2,375 Trade 2,441 1,259 3,700 2,573 1,023 3,596 Transport and storage 1,209 755 1,964 1,105 791 1,896 Utilities 1,938 1,447 3,385 1,418 1,564 2,982 Retail lending 49,542 12,056 61,598 46,700 12,114 58,814 Other 151 161 312 14 245 259 Total New Zealand 95,791 23,075 118,866 85,728 22,855 108,583 Other overseas Accommodation, cafes and restaurants 109 11 120 112 12 124 Agriculture, forestry and fishing 150 3 153 19 1 20 Construction 55 127 182 71 121 192 Finance and insurance 17,712 3,093 20,805 23,739 3,454 27,193 Government, administration and defence 5,646 23 5,669 4,252 50 4,302 Manufacturing 3,830 5,329 9,159 3,372 4,849 8,221 Mining 500 1,872 2,372 354 1,793 2,147 Property 493 29 522 468 57 525 Property services and business services 1,766 863 2,629 1,758 733 2,491 Services 244 637 881 207 448 655 Trade 2,318 2,859 5,177 2,323 3,330 5,653 Transport and storage 999 652 1,651 1,235 222 1,457 Utilities 1,088 931 2,019 765 329 1,094 Retail lending 864 37 901 684 45 729 Other 171 26 197 318 6 324 Total other overseas 35,945 16,492 52,437 39,677 15,450 55,127 Total gross credit risk 884,300 191,340 1,075,640 857,295 190,397 1,047,692 1. Comparatives have been restated for consistency. 2019 2018 1 Total on Undrawn Total on Undrawn Parent Entity balance credit balance credit $m sheet commitments Total sheet commitments Total Australia Accommodation, cafes and restaurants 7,989 1,070 9,059 8,247 1,404 9,651 Agriculture, forestry and fishing 9,191 2,014 11,205 8,604 2,035 10,639 Construction 6,853 3,340 10,193 6,260 3,324 9,584 Finance and insurance 158,418 7,316 165,734 156,489 7,781 164,270 Government, administration and defence 63,599 1,766 65,365 50,745 728 51,473 Manufacturing 10,322 5,850 16,172 9,754 5,738 15,492 Mining 3,304 3,802 7,106 3,609 3,078 6,687 Property 45,405 10,119 55,524 45,869 12,309 58,178 Property services and business services 13,348 5,898 19,246 12,533 5,595 18,128 Services 12,094 6,523 18,617 12,044 5,700 17,744 Trade 16,408 7,677 24,085 16,655 7,949 24,604 Transport and storage 9,221 5,114 14,335 9,202 4,957 14,159 Utilities 5,542 4,487 10,029 5,265 3,471 8,736 Retail lending 466,188 84,057 550,245 463,280 86,421 549,701 Other 5,684 2,740 8,424 6,499 1,574 8,073 Total Australia 833,566 151,773 985,339 815,055 152,064 967,119 New Zealand Accommodation, cafes and restaurants — — — — — — Agriculture, forestry and fishing 67 7 74 52 7 59 Construction 17 16 33 7 22 29 Finance and insurance 10,938 116 11,054 8,103 50 8,153 Government, administration and defence 2,196 8 2,204 1,039 29 1,068 Manufacturing 259 69 328 209 97 306 Mining 11 — 11 7 1 8 Property 117 3 120 52 8 60 Property services and business services 123 18 141 43 31 74 Services 46 1 47 25 44 69 Trade 392 170 562 324 234 558 Transport and storage 76 64 140 77 87 164 Utilities 507 73 580 374 146 520 Retail lending — 13 13 1 19 20 Other 37 1 38 1 1 2 Total New Zealand 14,786 559 15,345 10,314 776 11,090 Other overseas Accommodation, cafes and restaurants 67 10 77 70 12 82 Agriculture, forestry and fishing 130 1 131 4 1 5 Construction 47 125 172 59 113 172 Finance and insurance 60,388 3,067 63,455 63,043 3,442 66,485 Government, administration and defence 4,815 23 4,838 3,475 50 3,525 Manufacturing 3,822 5,269 9,091 3,367 4,741 8,108 Mining 497 1,869 2,366 355 1,791 2,146 Property 227 13 240 235 31 266 Property services and business services 1,683 862 2,545 1,668 730 2,398 Services 216 634 850 188 445 633 Trade 2,140 2,688 4,828 2,137 3,216 5,353 Transport and storage 888 643 1,531 1,129 214 1,343 Utilities 1,038 905 1,943 763 329 1,092 Retail lending 588 32 620 277 40 317 Other 133 14 147 238 4 242 Total other overseas 76,679 16,155 92,834 77,008 15,159 92,167 Total gross credit risk 925,031 168,487 1,093,518 902,377 167,999 1,070,376 1. Comparatives have been restated for consistency.
Schedule of credit quality of gross credit risk exposures	Credit quality disclosures (AASB 9) The following tables show the credit quality of gross credit risk exposures measured at amortised cost or at FVOCI to which the impairment requirements of AASB 9 apply. The credit quality is determined by reference to the credit risk ratings system (refer Note 21.2.1) and expectations of future economic conditions under multiple scenarios: Consolidated 2019 Parent Entity 2019 $m Stage 1 Stage 2 Stage 3 Total 1 Stage 1 Stage 2 Stage 3 Total 1 Loans - housing Strong 382,119 743 — 382,862 361,727 536 — 362,263 Good/Satisfactory 84,071 11,326 — 95,397 58,599 10,623 — 69,222 Weak 4,201 10,715 4,367 19,283 3,735 10,244 4,076 18,055 Total loans - housing 470,391 22,784 4,367 497,542 424,061 21,403 4,076 449,540 Loans - personal Strong 5,694 2 — 5,696 5,106 1 — 5,107 Good/Satisfactory 14,538 955 — 15,493 13,381 931 — 14,312 Weak 573 831 380 1,784 427 680 334 1,441 Total loans - personal 20,805 1,788 380 22,973 18,914 1,612 334 20,860 Loans - business 2 Strong 75,758 232 — 75,990 64,041 123 — 64,164 Good/Satisfactory 109,541 4,581 — 114,122 90,937 3,455 — 94,392 Weak 439 5,342 1,970 7,751 362 3,997 1,724 6,083 Total loans - business 185,738 10,155 1,970 197,863 155,340 7,575 1,724 164,639 Debt securities Strong 72,813 — — 72,813 68,309 — — 68,309 Good/Satisfactory 463 — — 463 23 — — 23 Weak — — — — — — — — Total debt securities 3 73,276 — — 73,276 68,332 — — 68,332 All other financial assets Strong 30,623 — — 30,623 162,339 — — 162,339 Good/Satisfactory 685 — — 685 496 — — 496 Weak 48 — — 48 41 — — 41 Total all other financial assets 31,356 — — 31,356 162,876 — — 162,876 Undrawn credit commitments Strong 148,525 328 — 148,853 132,776 317 — 133,093 Good/Satisfactory 39,782 1,294 — 41,076 33,097 1,122 — 34,219 Weak 142 1,135 134 1,411 123 937 115 1,175 Total undrawn credit commitments 188,449 2,757 134 191,340 165,996 2,376 115 168,487 Total strong 715,532 1,305 — 716,837 794,298 977 — 795,275 Total good/satisfactory 249,080 18,156 — 267,236 196,533 16,131 — 212,664 Total weak 5,403 18,023 6,851 30,277 4,688 15,858 6,249 26,795 Total on and off balance sheet 970,015 37,484 6,851 1,014,350 995,519 32,966 6,249 1,034,734 Details of collateral held in support of these balances are provided in Note 21.2.6. 1. This credit quality disclosure differs to that of credit risk concentration as it relates only to financial assets measured at amortised costs or at FVOCI and therefore excludes trading securities and financial assets measured at FVIS, and derivative financial instruments. 2. Included in strong is $131 million of exposure (Parent $131 million) that is covered by a highly rated guarantee, which if it were not considered, the exposure would be classified as weak. 3. Debt securities include $829 million at amortised cost for the Group and $27 million for the Parent Entity. $366 million of these are classified as strong for the Group and $4 million for the Parent Entity, and the rest are classified as good/satisfactory. Credit quality disclosures (AASB 139) The tables below segregate the financial assets of the Group and Parent Entity between financial assets that are neither past due nor impaired, past due but not impaired and impaired. The credit quality of financial assets that are neither past due nor impaired is determined by reference to the credit risk ratings system (refer to Note 21.2.1). as these tables do not reflect the adoption of AASB 9 they are not directly comparable to the credit quality tables above. Neither past due nor impaired Past due Total Consolidated 2018 Good/ but not Impairment carrying $m Strong 2 Satisfactory Weak 2 Total impaired Impaired Total provision value Cash and balances with central banks 3 26,555 233 — 26,788 — — 26,788 — 26,788 Collateral paid 4,787 — — 4,787 — — 4,787 — 4,787 Trading securities and financial assets measured at FVIS 4 22,718 145 — 22,863 — — 22,863 — 22,863 Derivative financial instruments 23,692 406 3 24,101 — — 24,101 — 24,101 Available-for-sale securities 4 60,229 506 — 60,735 — — 60,735 — 60,735 Loans: Loans - housing and personal 379,383 114,627 4,365 498,375 16,162 687 515,224 (1,303) 513,921 Loans - business 5 75,331 112,446 4,481 192,258 4,293 729 197,280 (1,511) 195,769 Other financial assets 5,025 434 18 5,477 37 3 5,517 — 5,517 Total 6 597,720 228,797 8,867 835,384 20,492 1,419 857,295 (2,814) 854,481 Neither past due nor impaired Past due Total Parent Entity 2018 Good/ but not Impairment carrying $m Strong 2 Satisfactory Weak 2 Total impaired Impaired Total provision value Cash and balances with central banks 3 24,850 126 — 24,976 — — 24,976 — 24,976 Collateral paid 4,722 — — 4,722 — — 4,722 — 4,722 Trading securities and financial assets measured at FVIS 4 21,199 145 — 21,344 — — 21,344 — 21,344 Derivative financial instruments 23,155 404 3 23,562 — — 23,562 — 23,562 Available-for-sale securities 4 56,443 3 — 56,446 — — 56,446 — 56,446 Loans: Loans - housing and personal 359,843 87,667 4,050 451,560 15,044 572 467,176 (1,125) 466,051 Loans - business 5 61,918 95,649 3,412 160,979 3,838 582 165,399 (1,282) 164,117 Due from subsidairies 7 134,086 — — 134,086 — — 134,086 — 134,086 Other financial assets 4,282 334 15 4,631 33 2 4,666 — 4,666 Total 6 690,498 184,328 7,480 882,306 18,915 1,156 902,377 (2,407) 899,970 Details of collateral held in support of these balances are provided in Note 21.2.6. 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail. 2. Included in strong is $146 million of exposure for both the Group and the Parent Entity that is covered by a highly rated guarantee, which if it were not considered, the exposure would be classified as weak. 3. In prior years, cash and balances with central banks were not disclosed. These balances have now been included. 4. Exclude equity securities. 5. Loans - business classified as strong was restated from $90,408 million to $75,331 million for the Group, and from $76,995 million to $61,918 million for the Parent Entity. In addition, balances classified under good/satisfactory were reclassified from $97,369 million to $112,446 million for the Group, and from $80,572 million to $95,649 million for the Parent Entity. 6. Total amount disclosed as 'strong' was restated from $586,393 million to $597,720 million for the Group, and from $687,386 million to $690,498 million for the Parent Entity. Total amount disclosed as good/satisfactory was restated from $213,693 million to $228,797 million for the Group, and from $210,856 million to $184,328 million. 7. Due from subsidiaries excludes $6,511 million of long-term debt instruments with equity like characteristics which are part of the total investment in subsidiaries.
Schedule of non-performing loans and credit commitments	The gross amount of non-performing loans and credit commitments, along with the provision for expected credit losses/provision for impairment charges, by type and geography of impaired loans at 30 September, is summarised in the following table: Consolidated $m Impaired exposures Australia Housing and business loans Gross amount 1,215 882 975 1,589 1,220 Provision (491) (422) (460) (769) (572) Net 724 460 515 820 648 Personal loans greater than 90 days past due Gross amount 384 358 362 267 252 Provision (233) (179) (187) (159) (164) Net 151 179 175 108 88 Restructured loans Gross amount 16 9 12 13 22 Provision (6) (1) (7) (11) (12) Net 10 8 5 2 10 New Zealand Housing and business loans Gross amount 62 124 152 218 348 Provision (26) (30) (41) (95) (104) Net 36 94 111 123 244 Personal loans greater than 90 days past due Gross amount 20 12 11 10 10 Provision (15) (9) (8) (7) (7) Net 5 3 3 3 3 Restructured loans Gross amount 12 14 15 16 17 Provision (3) (4) (5) (4) (4) Net 9 10 10 12 13 Other overseas Housing and business loans Gross amount 50 13 15 44 25 Provision (17) (6) (6) (21) (13) Net 33 7 9 23 12 Personal loans greater than 90 days past due Gross amount 1 1 — — 1 Provison — (1) — — (1) Net 1 — — — — Restructured loans Gross amount 3 3 — 2 — Provison (1) (1) — (1) — Net 2 2 — 1 — Total impaired loans Gross amount 1,763 1,416 1,542 2,159 1,895 Provision (792) (653) (714) (1,067) (877) Total net impaired assets 971 763 828 1,092 1,018 Items 90 days past due, or otherwise in default but not impaired Australia Gross amount 4,684 3,861 3,322 3,075 2,149 Provison 1 (521) (193) (165) (137) (110) Net 4,163 3,668 3,157 2,938 2,039 New Zealand Gross amount 340 127 117 89 130 Provison 1 (33) (10) (9) (7) (10) Net 307 117 108 82 120 Overseas Gross amount 64 29 19 17 13 Provison 1 (9) (2) (2) (1) (1) Net 55 27 17 16 12 Total Items 90 days past due, or otherwise in default but not impaired Gross amount 5,088 4,017 3,458 3,181 2,292 Provison 1 (563) (205) (176) (145) (121) Total net items 90 days past due, or otherwise in default but not impaired 4,525 3,812 3,282 3,036 2,171 Total non-performing loans and credit commitments Gross amount 6,851 5,433 5,000 5,340 4,187 Provison (1,355) (858) (890) (1,212) (998) Total net non-performing loans and credit commitments 5,496 4,575 4,110 4,128 3,189 1. In prior periods only gross amounts were disclosed. Provision information has now been included for all reporting years.
Summary of interest received and forgone on non-performing loans	Consolidated 2019 $m Australia Overseas Total Interest received 4 6 10 Interest forgone 32 — 32
Schedule of collateral coverage for loan portfolio	The Group analyses the coverage of the loan portfolio which is secured by the collateral that it holds. Coverage is measured as follows: Coverage Secured loan to collateral value ratio Fully secured Less than or equal to 100% Partially secured Greater than 100% but not more than 150% Unsecured Greater than 150%, or no security held (e.g. can include credit cards, personal loans, and exposure to highly rated corporate entities) The Group and the Parent Entity’s loan portfolio have the following coverage from collateral held based on the requirements of AASB 9: Performing loans Consolidated 2019 Housing Personal Business % Loans 1 Loans Loans Total Fully secured 100.0 7.9 59.6 85.9 Partially secured — 29.9 19.3 6.3 Unsecured — 62.2 21.1 7.8 Total 100.0 100.0 100.0 100.0 Parent Entity 2019 Housing Personal Business % Loans 1 Loans Loans Total Fully secured 100.0 8.6 60.1 86.7 Partially secured — 31.1 18.2 5.7 Unsecured — 60.3 21.7 7.6 Total 100.0 100.0 100.0 100.0 Non-performing loans Consolidated 2019 Housing Personal Business % Loans 1 Loans Loans Total Fully secured 90.3 — 49.5 73.3 Partially secured 9.7 38.2 29.2 17.0 Unsecured — 61.8 21.3 9.7 Total 100.0 100.0 100.0 100.0 Parent Entity 2019 Housing Personal Business % Loans 1 Loans Loans Total Fully secured 90.1 — 54.0 75.1 Partially secured 9.9 34.1 27.4 16.1 Unsecured — 65.9 18.6 8.8 Total 100.0 100.0 100.0 100.0 Details of the carrying value and associated provisions for ECL are disclosed in Notes 12 and 13 respectively. The credit quality of loans is disclosed in Note 21.2.4. 1. For the purposes of collateral classification, housing loans are classified as fully secured unless they are non-performing in which case may be classified as partially secured. As the comparatives have not been restated for the adoption of AASB 9, the Group and the Parent Entity’s loan portfolio have the following coverage from collateral held based on the requirements of AASB 139 for prior years. Once AASB 9 has been effective for the comparative year end, these tables will no longer be presented. Neither past due nor impaired Consolidated 2018 Loans - Housing and Loans - % personal Business Total Fully secured 97.5 55.8 85.9 Partially secured 0.6 22.9 6.8 Unsecured 1.9 21.3 7.3 Total 100.0 100.0 100.0 Parent Entity 2018 Loans - Housing and Loans - % personal Business Total Fully secured 98.1 57.8 87.5 Partially secured 0.3 20.4 5.6 Unsecured 1.6 21.8 6.9 Total 100.0 100.0 100.0 Past due but not impaired Consolidated 2018 Loans - Housing and Loans - % personal Business Total Fully secured 94.6 52.8 85.8 Partially secured 2.0 28.2 7.5 Unsecured 3.4 19.0 6.7 Total 100.0 100.0 100.0 Parent Entity 2018 Loans - Housing and Loans - % personal Business Total Fully secured 95.7 54.7 87.3 Partially secured 1.5 25.0 6.3 Unsecured 2.8 20.3 6.4 Total 100.0 100.0 100.0 Impaired Consolidated 2018 Loans - Housing and Loans - % personal Business Total Fully secured 72.8 32.0 51.8 Partially secured 10.0 11.5 10.8 Unsecured 17.2 56.5 37.4 Total 100.0 100.0 100.0 Parent Entity 2018 Loans - Housing and Loans - % personal Business Total Fully secured 76.4 28.5 52.2 Partially secured 6.5 13.1 9.8 Unsecured 17.1 58.4 38.0 Total 100.0 100.0 100.0
Summary of collateral held against financial assets other than loans	Consolidated Parent Entity $m 2019 2018 2019 2018 Cash, primarily for derivatives 3,289 2,187 2,851 1,751 Securities under reverse repurchase agreements 1 6,836 1,404 6,733 1,404 Securities under derivatives and stock borrowing 1 119 28 119 28 Total other collateral held 10,244 3,619 9,703 3,183
Summary of the Group's liquid asset holdings	A summary of the Group’s liquid asset holdings is as follows 2 : 2019 2018 $m Actual Average Actual Average Cash 18,398 19,189 25,476 21,912 Trading securities and financial assets measured at FVIS 18,867 17,184 11,235 10,051 Available-for-sale securities — — 60,667 62,892 Investment securities 73,328 66,701 — — Loans 3 58,933 52,498 55,500 55,336 Other financial assets 345 723 816 745 Total liquid assets 169,871 156,295 153,694 150,936 1. Securities received as collateral are not recognised on the Group and Parent Entity's balance sheet. 2. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 3. Loans are self-originated AAA rated mortgage backed securities which are eligible for repurchase with the RBA and Reserve Bank of New Zealand.
Summary of Group's funding composition	% Customer deposits 63.1 Wholesale term funding with residual maturity greater than 12 months 15.7 Wholesale funding with a residual maturity less than 12 months 12.4 Securitisation 0.9 Equity 7.9 Group's total funding 100.0
Schedule of Parent Entity's credit ratings	As at 30 September 2019 the Parent Entity’s credit ratings were: 2019 Short-term Long-term Outlook S&P Global Ratings A-1+ AA- Stable Moody’s Investors Service P-1 Aa3 Stable Fitch Ratings F1+ AA- Negative
Summary of financial assets pledged as collateral	Consolidated Parent Entity $m Cash 5,912 4,754 5,755 4,690 Cash deposit on stock borrowed 18 14 18 14 Securities (including certificates of deposit) 1,932 1,544 1,932 1,544 Securities pledged under repurchase agreements 13,754 12,492 13,754 12,492 Total amount pledged to secure liabilities 21,616 18,804 21,459 18,740
Schedule of contractual maturities of financial liabilities	21.3.4 Contractual maturity of financial liabilities 1 Consolidated 2019 Up to Over 1 month Over 3 months Over 1 year Over $m 1 month to 3 months to 1 year to 5 years 5 Years Total Financial liabilities Collateral received 3,291 — — — — 3,291 Deposits and other borrowings 374,126 83,365 97,081 11,968 73 566,613 Other financial liabilities 19,425 3,176 3,874 157 — 26,632 Derivative financial instruments: Held for trading 27,945 — — — — 27,945 Held for hedging purposes (net settled) 57 85 280 631 40 1,093 Held for hedging purposes (gross settled): Cash outflow 4 287 902 517 — 1,710 Cash inflow — (276) (875) (466) — (1,617) Debt issues 5,071 12,158 42,917 102,296 30,417 192,859 Total financial liabilities excluding loan capital 429,919 98,795 144,179 115,103 30,530 818,526 Loan capital 1 76 371 6,293 20,557 27,298 Total undiscounted financial liabilities 429,920 98,871 144,550 121,396 51,087 845,824 Total contingent liabilities and commitments Letters of credit and guarantees 15,150 — — — — 15,150 Commitments to extend credit 176,002 — — — — 176,002 Other commitments 188 — — — — 188 Total undiscounted contingent liabilities and commitments 191,340 — — — — 191,340 Consolidated 2018 Up to Over 1 Month Over 3 Months Over 1 Year Over $m 1 Month to 3 Months to 1 Year to 5 Years 5 Years Total Financial liabilities Collateral received 2,184 — — — — 2,184 Deposits and other borrowings 352,941 85,726 108,427 16,771 75 563,940 Other financial liabilities 18,894 2,445 3,697 160 — 25,196 Derivative financial instruments: Held for trading 22,869 — — — — 22,869 Held for hedging purposes (net settled) 68 95 377 741 96 1,377 Held for hedging purposes (gross settled): Cash outflow 2,680 5,140 406 2,799 1,258 12,283 Cash inflow (2,658) (5,096) (337) (2,527) (1,178) (11,796) Debt issues 1,743 7,502 48,848 100,245 31,892 190,230 Total financial liabilities excluding loan capital 398,721 95,812 161,418 118,189 32,143 806,283 Loan capital 8 79 253 4,866 16,509 21,715 Total undiscounted financial liabilities 398,729 95,891 161,671 123,055 48,652 827,998 Total contingent liabilities and commitments Letters of credit and guarantees 15,585 — — — — 15,585 Commitments to extend credit 174,658 — — — — 174,658 Other commitments 154 — — — — 154 Total undiscounted contingent liabilities and commitments 190,397 — — — — 190,397 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. Parent Entity 2019 Up to Over 1 Month Over 3 Months Over 1 Year Over $m 1 Month to 3 Months to 1 Year to 5 Years 5 Years Total Financial liabilities Collateral received 2,853 — — — — 2,853 Deposits and other borrowings 339,448 70,761 83,602 10,311 73 504,195 Other financial liabilities 19,340 3,121 3,625 157 — 26,243 Derivative financial instruments: Held for trading 28,329 — — — — 28,329 Held for hedging purposes (net settled) 21 9 97 378 33 538 Held for hedging purposes (gross settled): Cash outflow — 221 57 — — 278 Cash inflow — (215) (51) — — (266) Debt issues 4,790 10,959 37,104 86,064 28,063 166,980 Due to subsidiaries 15,538 1,020 4,989 20,117 142,620 184,284 Total financial liabilities excluding loan capital 410,319 85,876 129,423 117,027 170,789 913,434 Loan capital 1 76 371 6,293 20,557 27,298 Total undiscounted financial liabilities 410,320 85,952 129,794 123,320 191,346 940,732 Total contingent liabilities and commitments Letters of credit and guarantees 14,583 — — — — 14,583 Commitments to extend credit 153,716 — — — — 153,716 Other commitments 188 — — — — 188 Total undiscounted contingent liabilities and commitments 168,487 — — — — 168,487 Parent Entity 2018 Up to Over 1 Month Over 3 Months Over 1 Year Over $m 1 Month to 3 Months to 1 Year to 5 Years 5 Years Total Financial liabilities Collateral received 1,748 — — — — 1,748 Deposits and other borrowings 320,365 74,530 94,855 14,606 75 504,431 Other financial liabilities 18,835 2,363 3,334 160 — 24,692 Derivative financial instruments: Held for trading 23,039 — — — — 23,039 Held for hedging purposes (net settled) 51 55 271 608 96 1,081 Held for hedging purposes (gross settled): Cash outflow 2,632 4,725 377 2,174 726 10,634 Cash inflow (2,615) (4,687) (324) (2,043) (644) (10,313) Debt issues 1,588 7,117 45,527 85,106 29,329 168,667 Due to subsidiaries 2 18,249 1,156 5,388 23,653 139,076 187,522 Total financial liabilities excluding loan capital 383,892 85,259 149,428 124,264 168,658 911,501 Loan capital 8 79 253 4,866 16,509 21,715 Total undiscounted financial liabilities 383,900 85,338 149,681 129,130 185,167 933,216 Total contingent liabilities and commitments Letters of credit and guarantees 14,957 — — — — 14,957 Commitments to extend credit 152,943 — — — — 152,943 Other commitments 99 — — — — 99 Total undiscounted contingent liabilities and commitments 167,999 — — — — 167,999 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. Due to subsidiaries was restated from $142,400 million (classified under 'up to 1 month') to $187,522 million (classified across different maturity buckets). The increase reflects the contractual undiscounted interest to be paid on the liability.
Schedule of expected maturities of financial assets and financial liabilities	Consolidated 2019 Due within Greater than $m 12 Months 12 Months Total Assets Cash and balances with central banks 20,059 — 20,059 Collateral paid 5,930 — 5,930 Trading securities and financial assets measured at FVIS 18,544 13,237 31,781 Derivative financial instruments 20,695 9,164 29,859 Investment securities 9,810 63,591 73,401 Loans (net of provisions) 99,197 615,573 714,770 Other financial assets 5,367 — 5,367 Life insurance assets 1,541 7,826 9,367 Investment in associates — 129 129 All other assets 1,222 14,741 15,963 Total assets 182,365 724,261 906,626 Liabilities Collateral received 3,287 — 3,287 Deposits and other borrowings 551,817 11,430 563,247 Other financial liabilities 29,059 156 29,215 Derivative financial instruments 19,203 9,893 29,096 Debt issues 56,933 124,524 181,457 Life insurance liabilities 1,703 5,674 7,377 All other liabilities 3,907 1,707 5,614 Total liabilities excluding loan capital 665,909 153,384 819,293 Loan capital — 21,826 21,826 Total liabilities 665,909 175,210 841,119 Net assets/(net liabilities) (483,544) 549,051 65,507 Consolidated 2018 Due within Greater than $m 12 Months 12 Months Total Assets Cash and balances with central banks 26,788 — 26,788 Collateral paid 4,787 — 4,787 Trading securities and financial assets measured at FVIS 12,191 10,941 23,132 Derivative financial instruments 17,828 6,273 24,101 Available-for-sale securities 6,959 54,160 61,119 Loans (net of provisions) 94,717 614,973 709,690 Other financial assets 5,517 — 5,517 Life insurance assets 1,598 7,852 9,450 Investment in associates — 115 115 All other assets 1,008 13,885 14,893 Total assets 171,393 708,199 879,592 Liabilities Collateral received 2,184 — 2,184 Deposits and other borrowings 543,198 16,087 559,285 Other financial liabilities 27,956 149 28,105 Derivative financial instruments 17,346 7,061 24,407 Debt issues 53,930 118,666 172,596 Life insurance liabilities 1,547 6,050 7,597 All other liabilities 2,812 768 3,580 Total liabilities excluding loan capital 648,973 148,781 797,754 Loan capital 1,382 15,883 17,265 Total liabilities 650,355 164,664 815,019 Net assets/(net liabilities) (478,962) 543,535 64,573 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational and changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. Parent Entity 2019 Due within Greater than $m 12 Months 12 Months Total Assets Cash and balances with central banks 17,692 — 17,692 Collateral paid 5,773 — 5,773 Trading securities and financial assets measured at FVIS 16,736 12,829 29,565 Derivative financial instruments 20,613 8,670 29,283 Investment securities 7,200 61,198 68,398 Loans (net of provisions) 79,956 551,980 631,936 Other financial assets 4,615 — 4,615 Due from subsidiaries 10,291 132,670 142,961 Investment in subsidiaries — 6,436 6,436 Investment in associates — 100 100 All other assets 756 12,224 12,980 Total assets 163,632 786,107 949,739 Liabilities Collateral received 2,849 — 2,849 Deposits and other borrowings 491,562 9,868 501,430 Other financial liabilities 28,360 156 28,516 Derivative financial instruments 19,167 9,700 28,867 Debt issues 50,028 106,646 156,674 Due to subsidiaries 17,563 131,044 148,607 All other liabilities 2,545 1,587 4,132 Total liabilities excluding loan capital 612,074 259,001 871,075 Loan capital — 21,826 21,826 Total liabilities 612,074 280,827 892,901 Net assets/(net liabilities) (448,442) 505,280 56,838 Parent Entity 2018 Due within Greater than $m 12 Months 12 Months Total Assets Cash and balances with central banks 24,976 — 24,976 Collateral paid 4,722 — 4,722 Trading securities and financial assets measured at FVIS 11,466 9,949 21,415 Derivative financial instruments 17,677 5,885 23,562 Available-for-sale securities 4,846 51,667 56,513 Loans (net of provisions) 76,389 553,779 630,168 Other financial assets 4,666 — 4,666 Due from subsidiaries 12,661 127,936 140,597 Investment in subsidiaries — 4,508 4,508 Investment in associates — 76 76 All other assets 681 11,346 12,027 Total assets 158,084 765,146 923,230 Liabilities Collateral received 1,748 — 1,748 Deposits and other borrowings 486,418 14,050 500,468 Other financial liabilities 27,117 149 27,266 Derivative financial instruments 17,317 6,912 24,229 Debt issues 50,499 101,789 152,288 Due to subsidiaries 19,932 122,468 142,400 All other liabilities 1,534 676 2,210 Total liabilities excluding loan capital 604,565 246,044 850,609 Loan capital 1,382 15,883 17,265 Total liabilities 605,947 261,927 867,874 Net assets/(net liabilities) (447,863) 503,219 55,356 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail.
Summary of key parameters of VaR	Holding period 1 day Confidence level 99% Period of historical data used 1 year
Summary of aggregate VaR, by risk type as it relates to traded market risk	The table below depicts the aggregate VaR, by risk type, for the year ended 30 September: Consolidated and Parent Entity 2019 2018 2017 $m High Low Average High Low Average High Low Average Interest rate risk 14.9 6.6 10.9 15.6 5.1 8.6 16.0 4.6 8.5 Foreign exchange risk 8.6 0.8 4.1 6.9 0.7 3.0 9.4 0.6 3.1 Equity risk 0.2 0.0 0.0 1.0 0.0 0.1 0.4 0.0 0.1 Commodity risk 1 42.0 1.7 8.2 24.3 1.7 6.5 14.1 3.3 6.6 Other market risks 2 5.5 2.0 3.5 5.8 1.4 3.8 5.1 3.5 4.2 Diversification effect n/a n/a (12.3) n/a n/a (8.6) n/a n/a (8.6) Net market risk 45.3 7.9 14.4 28.1 6.7 13.4 22.9 9.7 13.9 1. Includes electricity risk. 2. Includes prepayment risk and credit spread risk (exposure to movements in generic credit rating bands).
Summary of net interest income-at-risk (NaR) as it relates to non-traded market risk	The table below depicts NaR assuming a 100 basis point shock (with a floor of zero for falling interest rates) over the next 12 months as a percentage of reported net interest income: 2019 2018 % (increase)/decrease in net interest Maximum Minimum Average Maximum Minimum Average income As at Exposure Exposure Exposure As at Exposure Exposure Exposure Consolidated 2.88 2.88 (0.46) 0.81 0.01 0.78 (0.09) 0.27 Parent Entity 2.14 2.14 (0.42) 0.43 (0.22) 0.51 (0.28) 0.04
Summary of VaR for IRRBB as it relates to non-traded market risk	2019 2018 $m As at High Low Average As at High Low Average Consolidated 34.1 37.3 19.4 27.8 23.2 57.0 23.2 32.5

Fair values of financial asse_2

Fair values of financial assets and financial liabilities (Tables)	12 Months Ended
	Sep. 30, 2019
Fair values of financial assets and financial liabilities
Summary of attribution of financial instruments measured at fair value to the fair value hierarchy	2019 2018 Valuation Valuation Valuation Valuation Quoted techniques techniques Quoted techniques techniques market (Market (Non-market market (Market (Non-market Consolidated prices observable) observable) prices observable) observable) $m (Level 1) (Level 2) (Level 3) Total (Level 1) (Level 2) (Level 3) Total Financial assets measured at fair value on a recurring basis Trading securities and financial assets measured at FVIS 10,440 21,121 220 31,781 8,958 13,844 330 23,132 Derivative financial instruments 7 29,828 24 29,859 20 24,066 15 24,101 Available-for-sale securities — — — — 11,996 48,504 619 61,119 Investment securities 11,163 61,284 134 72,581 — — — — Loans 2 — 239 21 260 — 546 — 546 Life insurance assets 1,097 8,270 — 9,367 1,345 8,105 — 9,450 Total financial assets measured at fair value on a recurring basis 22,707 120,742 399 143,848 22,319 95,065 964 118,348 Financial liabilities measured at fair value on a recurring basis Deposits and other borrowings 3 — 38,413 — 38,413 — 41,178 — 41,178 Other financial liabilities 4 262 5,108 — 5,370 496 3,801 — 4,297 Derivative financial instruments 8 29,059 29 29,096 76 24,325 6 24,407 Debt issues 5 — 5,819 — 5,819 — 3,355 — 3,355 Life insurance liabilities — 7,377 — 7,377 — 7,597 — 7,597 Total financial liabilities measured at fair value on a recurring basis 270 85,776 29 86,075 572 80,256 6 80,834 2019 2018 Valuation Valuation Valuation Valuation Quoted techniques techniques Quoted techniques techniques market (Market (Non-market market (Market (Non-market Parent Entity prices observable) observable) prices observable) observable) $m (Level 1) (Level 2) (Level 3) Total (Level 1) (Level 2) (Level 3) Total Financial assets measured at fair value on a recurring basis Trading securities and financial assets measured at FVIS 10,213 19,159 193 29,565 8,952 12,257 206 21,415 Derivative financial instruments 7 29,253 23 29,283 20 23,529 13 23,562 Available-for-sale securities — — — — 10,657 45,786 70 56,513 Investment securities 10,191 58,114 66 68,371 — — — — Loans 2 — 239 21 260 — 546 — 546 Due from subsidiaries 6 — 897 — 897 — 278 — 278 Total financial assets measured at fair value on a recurring basis 20,411 107,662 303 128,376 19,629 82,396 289 102,314 Financial liabilities measured at fair value on a recurring basis Deposits and other borrowings 3 — 37,355 — 37,355 — 40,062 — 40,062 Other financial liabilities 4 262 5,108 — 5,370 496 3,801 — 4,297 Derivative financial instruments 8 28,831 28 28,867 76 24,147 6 24,229 Debt issues 5 — 3,624 — 3,624 — 3,223 — 3,223 Due to subsidiaries 6 — 1,591 — 1,591 — 523 — 523 Total financial liabilities measured at fair value on a recurring basis 270 76,509 28 76,807 572 71,756 6 72,334 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. As at 30 September 2018, loans measured at fair value were restated from $3,250 million to $546 million for both the Group and the Parent Entity. 3. The contractual outstanding amount payable at maturity for the Group is $38,468 million (2018: $41,330 million) and for the Parent Entity is $37,410 million (2018: $40,214 million). 4. The contractual outstanding amount payable at maturity for the Group and the Parent Entity is $5,369 million (2018: $4,298 million). 5. The contractual outstanding amount payable at maturity for the Group is $5,632 million (2018: $3,475 million) and for the Parent Entity is $3,436 million (2018: $3,344 million). The cumulative change in the fair value of debt issues attributable to changes in Westpac's own credit risk is $34 million decrease (2018: $45 million decrease) for the Group and Parent Entity. 6. As at 30 September 2018, the balances disclosed have been restated to include due from subsidiaries and due to subsidiaries measured at fair value.
Summary of movements between fair value hierarchy levels	The following tables summarise the changes in financial instruments measured at fair value derived from non-market observable valuation techniques (Level 3): Trading securities and financial assets Available- Total Total Consolidated 2019 measured for-sale Investment Level 3 Level 3 $m at FVIS securities securities Other 2 assets Derivatives liabilities Balance as at beginning of year 330 619 — 15 964 6 6 Impact on adoption of AASB 9 4 (619) 109 14 (492) — — Restated opening balance 334 — 109 29 472 6 6 Gains/(losses) on assets and (gains)/ losses on liabilities recognised in: Income statements 36 — — 12 48 7 7 Other comprehensive income — — 11 — 11 — — Acquisition and issues 63 — 36 16 115 4 4 Disposal and settlements (216) — (22) (12) (250) (6) (6) Transfer into or out of non-market observables — — — — — 18 18 Foreign currency translation impacts 3 — — — 3 — — Balance as at end of year 220 — 134 45 399 29 29 Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year 26 — — 16 42 (11) (11) Trading securities and financial assets Available- Total Total Consolidated 2018 measured for-sale Level 3 Level 3 $m at FVIS securities Other 2 assets Derivatives liabilities Balance as at beginning of year 1,399 Gains/(losses) on assets/(gains)/losses on liabilities recognised in: Income statements 2 — 1 1 1 Available-for-sale securities reserve — (7) — (7) — — Acquisition and issues 67 1,446 3 1,516 1 1 Disposal and settlements (433) (1,456) (4) (1,893) (5) (5) Transfer into or out of non-market observables (75) — — (75) — — Foreign currency translation impacts 2 19 — — — Balance as at end of year 330 619 15 6 6 Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year (7) — 4 (3) (2) (2) 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. Other is comprised of derivative financial assets and, for 2019 only, certain loans. Trading securities and financial assets Available- Total Total Parent Entity 2019 measured for-sale Investment Level 3 Level 3 $m at FVIS securities securities Other 2 assets Derivatives liabilities Balance as at beginning of year 206 70 — 13 289 6 6 Impact on adoption of AASB 9 — (70) 67 14 11 — — Restated opening balance 206 — 67 27 300 6 6 Gains/(losses) on assets and (gains)/ losses on liabilities recognised in: Income statements 6 — — 13 19 6 6 Other comprehensive income — — — — — — — Acquisition and issues 17 — 2 16 35 4 4 Disposal and settlements (39) — (3) (12) (54) (6) (6) Transfer into or out of non-market observables — — — — — 18 18 Foreign currency translation impacts 3 — — — 3 — — Balance as at end of year 193 — 66 44 303 28 28 Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year 3 — — 16 19 (10) (10) Trading securities and financial assets Available- Total Total Parent Entity 2018 measured for-sale Level 3 Level 3 $m at FVIS securities Other 2 assets Derivatives liabilities Balance as at beginning of year 501 64 15 580 9 9 Gains/(losses) on assets/(gains)/losses on liabilities recognised in: Income statements 6 — 1 7 1 1 Available-for-sale securities reserve — 2 — 2 — — Acquisition and issues 21 18 3 42 1 1 Disposal and settlements (268) (14) (6) (288) (5) (5) Transfer into or out of non-market observables (53) — — (53) — — Foreign currency translation impacts (1) — — (1) — — Balance as at end of year 206 70 13 289 6 6 Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year 5 — 4 9 (2) (2) 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. Other is comprised of derivative financial assets and, for 2019 only,certain loans.
Schedule of financial instruments not measured at fair value	2019 Fair value Valuation Valuation Quoted techniques techniques market (Market (Non-market Consolidated Carrying prices observable) observable) $m amount (Level 1) (Level 2) (Level 3) Total Financial assets not measured at fair value Cash and balances with central banks 20,059 20,059 — — 20,059 Collateral paid 5,930 5,930 — — 5,930 Investment securities 820 — 366 454 820 Loans 714,510 — — 716,130 716,130 Other financial assets 5,367 — 5,367 — 5,367 Total financial assets not measured at fair value 746,686 25,989 5,733 716,584 748,306 Financial liabilities not measured at fair value Collateral received 3,287 3,287 — — 3,287 Deposits and other borrowings 524,834 — 522,726 2,790 525,516 Other financial liabilities 23,845 — 23,845 — 23,845 Debt issues 2 175,638 — 176,838 — 176,838 Loan capital 21,826 — 22,076 — 22,076 Total financial liabilities not measured at fair value 749,430 3,287 745,485 2,790 751,562 2018 Fair value Valuation Valuation Quoted techniques techniques market (Market (Non-market Consolidated Carrying prices observable) observable) $m amount (Level 1) (Level 2) (Level 3) Total Financial assets not measured at fair value Cash and balances with central banks 26,788 26,788 — — 26,788 Collateral paid 4,787 4,787 — — 4,787 Loans 3 709,144 — — 709,446 709,446 Other financial assets 5,517 — 5,517 — 5,517 Total financial assets not measured at fair value 746,236 31,575 5,517 709,446 746,538 Financial liabilities not measured at fair value Collateral received 2,184 2,184 — — 2,184 Deposits and other borrowings 518,107 — 515,953 2,838 518,791 Other financial liabilities 23,808 — 23,808 — 23,808 Debt issues 2 169,241 — 170,060 — 170,060 Loan capital 17,265 — 17,438 — 17,438 Total financial liabilities not measured at fair value 730,605 2,184 727,259 2,838 732,281 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. The estimated fair value of debt issues includes the impact of changes in Westpac's credit spreads since origination. 3. As at 30 September 2018, loans measured at amortised cost were restated from $706,440 million to $709,144 million. Accordingly, the fair value estimates were also restated from $706,742 million to $709,446 million. 2019 Fair value Valuation Valuation Quoted techniques techniques market (Market (Non-market Parent Entity Carrying prices Observable) observable) $m amount (Level 1) (Level 2) (Level 3) Total Financial assets not measured at fair value Cash and balances with central banks 17,692 17,692 — — 17,692 Collateral paid 5,773 5,773 — — 5,773 Investment securities 27 — 4 23 27 Loans 631,676 — — 633,003 633,003 Due from subsidiaries 2 133,899 — 89,680 45,175 134,855 Other financial assets 4,615 — 4,615 — 4,615 Total financial assets not measured at fair value 793,682 23,465 94,299 678,201 795,965 Financial liabilities not measured at fair value Collateral received 2,849 2,849 — — 2,849 Deposits and other borrowings 464,075 — 463,440 1,251 464,691 Other financial liabilities 23,146 — 23,146 — 23,146 Debt issues 3 153,050 — 154,111 — 154,111 Due to subsidiaries 2 147,016 — 6,553 140,463 147,016 Loan capital 21,826 — 22,076 — 22,076 Total financial liabilities not measured at fair value 811,962 2,849 669,326 141,714 813,889 2018 Fair value Valuation Valuation Quoted techniques techniques market (Market (Non-market Parent Entity Carrying prices observable) observable) $m amount (Level 1) (Level 2) (Level 3) Total Financial assets not measured at fair value Cash and balances with central banks 24,976 24,976 — — 24,976 Collateral paid 4,722 4,722 — — 4,722 Loans 4 629,622 — — 629,774 629,774 Due from subsidiaries 2 133,808 — 88,368 46,295 134,663 Other financial assets 4,666 — 4,666 — 4,666 Total financial assets not measured at fair value 797,794 29,698 93,034 676,069 798,801 Financial liabilities not measured at fair value Collateral received 1,748 1,748 — — 1,748 Deposits and other borrowings 460,406 — 459,841 1,213 461,054 Other financial liabilities 22,969 — 22,969 — 22,969 Debt issues 3 149,065 — 149,800 — 149,800 Due to subsidiaries 2 141,877 — 6,933 134,944 141,877 Loan capital 17,265 — 17,438 — 17,438 Total financial liabilities not measured at fair value 793,330 1,748 656,981 136,157 794,886 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. Due from subsidiaries excludes $8,165 million (2018: $6,511 million) of long-term debt instruments with equity-like characteristics which are part of the total investment in subsidiaries. As at 30 September 2018, the due from subsidiaries measured at amortised cost was restated from $140,597 million to $133,808 million, and due to subsidiaries measured at amortised cost was restated from $142,400 million to $141,877 million. Accordingly, the fair value estimate of due from subsidiaries was restated from $140,597 million (all within Level 3) to $134,663 million (split between Level 2 and Level 3), and the fair value estimate of due to subsidiaries was restated from $142,400 million (all within Level 3) to $141,877 million (split between Level 2 and Level 3). 3. The estimated fair value of debt issues includes the impact of changes in Westpac's credit spreads since origination. 4. As at 30 September 2018, loans measured at amortised cost were restated from $626,918 million to $629,622 million. Accordingly, the fair value estimates were also restated from $627,070 million to $629,774 million.

Offsetting financial assets a_2

Offsetting financial assets and financial liabilities (Tables)	12 Months Ended
	Sep. 30, 2019
Offsetting financial assets and financial liabilities
Schedule of offsetting financial assets and financial liabilities	Effects of offsetting Amounts subject to enforceable on balance sheet netting arrangements but not offset Net amounts Other reported on recognised Financial Consolidated Gross Amounts the balance financial Cash instrument Net $m amounts offset sheet instruments collateral 2,3 collateral amount 2019 Assets Collateral paid 4 6,643 (6,559) 84 — — (17) 67 Derivative financial instruments 61,464 (31,605) 29,859 (18,609) (3,280) (102) 7,868 Reverse repurchase agreements 5 6,833 — 6,833 — (9) (6,824) — Loans 6 18,202 (18,130) 72 — — — 72 Total assets 93,142 (56,294) 36,848 (18,609) (3,289) (6,943) 8,007 Liabilities Collateral received 3,024 (2,972) 52 — — — 52 Derivative financial instruments 64,288 (35,192) 29,096 (18,609) (5,622) (1,932) 2,933 Repurchase agreements 7 10,604 — 10,604 — (3) (10,601) — Deposits and other borrowings 6 28,880 (18,130) 10,750 — — — 10,750 Total liabilities 106,796 (56,294) 50,502 (18,609) (5,625) (12,533) 13,735 2018 Assets Collateral paid 4 4,196 (4,162) 34 — — (14) 20 Derivative financial instruments 32,828 (8,727) 24,101 (15,962) (2,184) (14) 5,941 Reverse repurchase agreements 5 1,379 — 1,379 — (3) (1,376) — Loans 6 8,519 (8,420) 99 — — — 99 Total assets 46,922 (21,309) 25,613 (15,962) (2,187) (1,404) 6,060 Liabilities Derivative financial instruments 37,296 (12,889) 24,407 (15,962) (4,487) (1,544) 2,414 Repurchase agreements 7 9,522 — 9,522 — — (9,522) — Deposits and other borrowings 6 20,486 (8,420) 12,066 — — — 12,066 Total liabilities 67,304 (21,309) 45,995 (15,962) (4,487) (11,066) 14,480 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. $3,287 million (2018: $2,184 million) of cash collateral, subject to enforceable netting arrangements with derivative financial assets and reverse repurchase agreements, forms part of collateral received as disclosed on the balance sheet. The remainder is included in term deposits recognised in deposits and other borrowings within Note 16. 3. $5,625 million (2018: $4,487 million) of cash collateral, subject to enforceable netting arrangements with derivative financial liabilities and repurchase agreements, forms part of collateral paid as disclosed on the balance sheet. The remainder of collateral paid, as disclosed on the balance sheet, consists of $18 million (2018: $14 million) in stock borrowing arrangements and $287 million (2018: $286 million) related to futures margin that does not form part of this column. 4. Gross amounts consist of variation margin held directly with central clearing counterparties and stock borrowing arrangements. Where variation margin is receivable it is reported as part of collateral paid. Where variation margin is payable it is reported as part of collateral received. Amounts offset relate to variation margin. 2018 restated to exclude $61 million of initial margin. 5. Reverse repurchase agreements form part of trading securities and financial assets measured at FVIS in Note 10. 6. Gross amounts consist of debt and interest set-off accounts which meet the requirements for offsetting as described above. These accounts form part of business loans in Note 12 and part of deposits and other borrowings at amortised cost in Note 16. 7. Repurchase agreements form part of other financial liabilities in Note 17. Effects of offsetting Amounts subject to enforceable on balance sheet netting arrangements but not offset Net amounts Other reported on recognised Financial Parent Entity Gross Amounts the balance financial Cash instrument Net $m amounts offset sheet instruments collateral 2,3 collateral amount 2019 Assets Collateral paid 4 6,643 (6,559) 84 — — (17) 67 Derivative financial instruments 60,888 (31,605) 29,283 (18,526) (2,842) (102) 7,813 Reverse repurchase agreements 5 6,731 — 6,731 — (9) (6,722) — Loans 6 18,202 (18,130) 72 — — — 72 Total assets 92,464 (56,294) 36,170 (18,526) (2,851) (6,841) 7,952 Liabilities Collateral received 3,024 (2,972) 52 — — — 52 Derivative financial instruments 64,059 (35,192) 28,867 (18,526) (5,466) (1,932) 2,943 Repurchase agreements 7 10,604 — 10,604 — (3) (10,601) — Deposits and other borrowings 6 28,880 (18,130) 10,750 — — — 10,750 Total liabilities 106,567 (56,294) 50,273 (18,526) (5,469) (12,533) 13,745 2018 Assets Collateral paid 4 4,196 (4,162) 34 — — (14) 20 Derivative financial instruments 32,289 (8,727) 23,562 (15,862) (1,748) (14) 5,938 Reverse repurchase agreements 5 1,379 — 1,379 — (3) (1,376) — Loans 6 8,519 (8,420) 99 — — — 99 Total assets 46,383 (21,309) 25,074 (15,862) (1,751) (1,404) 6,057 Liabilities Derivative financial instruments 37,118 (12,889) 24,229 (15,862) (4,423) (1,544) 2,400 Repurchase agreements 7 9,522 — 9,522 — — (9,522) — Deposits and other borrowings 6 20,486 (8,420) 12,066 — — — 12,066 Total liabilities 67,126 (21,309) 45,817 (15,862) (4,423) (11,066) 14,466 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. $2,849 million (2018: $1,748 million) of cash collateral, subject to enforceable netting arrangements with derivative financial assets and reverse repurchase agreements, forms part of collateral received as disclosed on the balance sheet. The remainder is included in term deposits recognised in deposits and other borrowings within Note 16. 3. $5,469 million (2018: $4,423 million) of cash collateral, subject to enforceable netting arrangements with derivative financial liabilities and repurchase agreements, forms part of collateral paid as disclosed on the balance sheet. The remainder of collateral paid, as disclosed on the balance sheet, consists of $18 million (2018: $14 million) in stock borrowing arrangements and $286 million (2018: $285 million) related to futures margin that does not form part of this column. 4. Gross amounts consist of variation margin held directly with central clearing counterparties and stock borrowing arrangements. Where variation margin is receivable it is reported as part of collateral paid. Where variation margin is payable it is reported as part of collateral received. Amounts offset relate to variation margin. 2018 restated to exclude $61 million of initial margin. 5. Reverse repurchase agreements form part of trading securities and financial assets measured at FVIS in Note 10. 6. Gross amounts consist of debt and interest set-off accounts which meet the requirements for offsetting as described above. These accounts form part of business loans in Note 12 and part of deposits and other borrowings at amortised cost in Note 16. 7. Repurchase agreements form part of other financial liabilities in Note 17.

Securitisation, covered bonds_2

Securitisation, covered bonds and other transferred assets (Tables)	12 Months Ended
	Sep. 30, 2019
Securitisation, covered bonds and other transferred assets
Schedule of assets transferred and their associated liabilities	For those liabilities that only have recourse to the transferred assets: Carrying Carrying Fair Fair amount of amount of value of value of Net fair Consolidated transferred associated transferred associated value $m assets liabilities assets liabilities position 2019 Securitisation 1 8,221 8,190 8,268 8,177 91 Covered bonds 2 44,676 38,037 n/a n/a n/a Repurchase agreements 13,754 10,604 n/a n/a n/a Total 66,651 56,831 8,268 8,177 91 2018 Securitisation 1 7,631 7,588 7,662 7,565 97 Covered bonds 2 43,088 35,434 n/a n/a n/a Repurchase agreements 12,492 9,522 n/a n/a n/a Total 63,211 52,544 7,662 7,565 97 For those liabilities that only have recourse to the transferred assets: Carrying Carrying Fair Fair amount of amount of value of value of Net fair Parent Entity transferred associated transferred associated value $m assets liabilities assets liabilities position 2019 Securitisation 1 101,689 101,146 101,871 100,268 1,603 Covered bonds 2 37,697 33,160 n/a n/a n/a Repurchase agreements 13,754 10,604 n/a n/a n/a Total 153,140 144,910 101,871 100,268 1,603 2018 Securitisation 1 97,259 96,728 97,291 96,473 818 Covered bonds 2 36,190 30,268 n/a n/a n/a Repurchase agreements 12,492 9,522 n/a n/a n/a Total 145,941 136,518 97,291 96,473 818 1. The carrying amount of assets securitised exceeds the amount of notes issued primarily because the carrying amount includes both principal and income received from the transferred assets. 2. The difference between the carrying values of covered bonds and the assets pledged reflects the over-collateralisation required to maintain the ratings of the covered bonds and also additional assets to allow immediate issuance of additional covered bonds if required. These additional assets can be repurchased by Westpac at its discretion, subject to the conditions set out in the transaction documents.

Intangible assets (Tables)

Intangible assets (Tables)	12 Months Ended
	Sep. 30, 2019
Intangible assets
Schedule of changes in intangible assets, including goodwill	Consolidated Parent Entity $m 2019 2018 2019 2018 Goodwill Opening balance 8,890 9,012 6,844 6,844 Disposals 1 — (15) — — Impairment 1 — (105) — — Other adjustments 5 (2) — — Closing balance 8,895 8,890 6,844 6,844 Computer software Opening balance 2,177 1,916 2,014 1,758 Additions 906 882 846 823 Impairment (25) (2) (25) (2) Amortisation (694) (618) (628) (565) Other adjustments 1 (1) — — Closing balance 2,365 2,177 2,207 2,014 Cost 6,395 5,727 5,464 4,861 Accumulated amortisation and impairment (4,030) (3,550) (3,257) (2,847) Carrying amount 2,365 2,177 2,207 2,014 Brand Names Opening balance 670 670 636 636 Closing balance 670 670 636 636 Carrying amount 670 670 636 636 Core deposit intangibles Opening balance — 21 — 21 Amortisation — (21) — (21) Closing balance — — — — Cost — 1,494 — 1,279 Accumulated amortisation — (1,494) — (1,279) Carrying amount — — — — Other intangible assets Opening balance 26 33 — — Additions through business combination — — — — Amortisation (3) (7) — — Closing balance 23 26 — — Cost 144 391 — 160 Accumulated amortisation and impairment (121) (365) — (160) Carrying amount 23 26 — — Total intangible assets 11,953 11,763 9,687 9,494 1. The sale of Hastings’ overseas operations and subsequent exit of Hastings’ Australian operations resulted in the entire balance of goodwill previously allocated to Hastings being derecognised ($15m) or impaired ($105m) in 2018.
Schedule of allocation of goodwill to CGUs	Consolidated Parent Entity $m Consumer 4,060 3,359 3,144 3,144 Business 3,860 2,513 3,213 2,378 Westpac Institutional Bank 487 487 487 487 BT Financial Group (Australia) — 2,048 — 835 New Zealand 488 483 — — Total goodwill 8,895 8,890 6,844 6,844 1. In 2019, BT Financial Group (Australia)’s goodwill has been reallocated to Consumer and Business as a result of the restructure of its operations. Refer to Note 2 for further details of the restructure.

Operating lease commitments (Ta

Operating lease commitments (Tables)	12 Months Ended
	Sep. 30, 2019
Operating lease commitments
Schedule of operating lease commitments	The lease commitments at 30 September 2018 and 30 September 2019 are as follows: Consolidated Parent Entity $m Due within one year 608 570 555 498 Due after one year but not later than five years 1,716 1,564 1,583 1,356 Due after 5 years 1,421 1,819 1,305 1,460 Total lease commitments 3,745 3,953 3,443 3,314

Provisions, contingent liabil_2

Provisions, contingent liabilities, contingent assets and credit commitments (Tables)	12 Months Ended
	Sep. 30, 2019
Provisions, contingent liabilities, contingent assets and credit commitments
Schedule of changes in provisions	Provisions Annual leave and Litigation Provisions for Compliance, Long other and non- impairment regulation and service employee lending on credit Leasehold Restructuring remediation $m leave benefits losses commitments 1 Premises provisions provisions Total Consolidated Balance at 30 September 2018 417 699 53 239 24 27 469 1,928 Impact on adoption of AASB 9 — — — 98 — — — 98 Restated opening balance 417 699 53 337 24 27 469 2,026 Additions 90 866 66 — 7 259 1,489 2,777 Utilisation (51) (931) (81) — (7) (125) (324) (1,519) Reversal of unutilised provisions — (20) — (32) — (1) (61) (114) Other — — — — — — (1) (1) Balance at 30 September 2019 456 614 38 305 24 160 1,572 3,169 Parent Entity Balance at 30 September 2018 386 639 37 206 24 27 447 1,766 Impact on adoption of AASB 9 — — — 95 — — — 95 Restated opening balance 386 639 37 301 24 27 447 1,861 Additions 90 813 53 — 7 259 1,436 2,658 Utilisation (48) (876) (67) — (7) (125) (313) (1,436) Reversal of unutilised provisions — (19) — (26) — (1) (57) (103) Balance at 30 September 2019 428 557 23 275 24 160 1,513 2,980 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail.
Summary of undrawn credit commitments and maturity analysis	Consolidated Parent Entity $m Undrawn credit commitments Letters of credit and guarantees 1 15,150 15,585 14,583 14,957 Commitments to extend credit 2 176,002 174,658 153,716 152,943 Other 188 154 188 99 Total undrawn credit commitments 191,340 190,397 168,487 167,999 1. Standby letters of credit are undertakings to pay, against presentation documents, an obligation in the event of a default by a customer. Guarantees are unconditional undertakings given to support the obligations of a customer to third parties. The Group may hold cash as collateral for certain guarantees issued. 2. Commitments to extend credit include all obligations on the part of the Group to provide credit facilities. As facilities may expire without being drawn upon, the notional amounts do not necessarily reflect future cash requirements. In addition to the commitments disclosed above, at 30 September 2019 the Group had offered $5.0 billion (2018: $5.7 billion) of facilities to customers, which had not yet been accepted. Consolidated 2019 Up to Over 1 Over 3 Over $m 1 Year to 3 Years to 5 Years 5 Years Total Letters of credit and guarantees 7,334 4,639 719 2,458 15,150 Commitments to extend credit 41,488 58,402 12,917 63,195 176,002 Other 125 — — 63 188 Total undrawn credit commitments 48,947 63,041 13,636 65,716 191,340

Shareholders' equity (Tables)

Shareholders' equity (Tables)	12 Months Ended
	Sep. 30, 2019
Shareholders' equity
Schedule of share capital and changes in shares	Consolidated Parent Entity $m Share capital Ordinary share capital, fully paid 37,508 36,054 37,508 36,054 Treasury shares held for RSP 1 (572) (505) (572) (505) Other treasury shares held 2 19 12 (3) (3) Total treasury shares held (553) (493) (575) (508) Total share capital 36,955 35,561 36,933 35,546 Non-controlling interests 53 52 — — 1. 2019: 4,784,213 unvested shares held (2018: 3,943,660). 2. 2019: 1,721,532 shares held (2018: 2,029,795).
Schedule of reconciliation of movement in number of ordinary shares	Consolidated and Parent Entity (number) Opening balance 3,434,796,711 3,394,364,279 Dividend reinvestment plan 3 55,132,062 21,242,667 Conversion of Westpac Convertible Preference Shares 4 — 19,189,765 Closing balance 3,489,928,773 3,434,796,711 3. The price per share for the issuance of shares in relation to the dividend reinvestment plan for the 2019 interim dividend was $27.36 and 2018 final dividend was $25.82 (2018: 2018 interim dividend was $28.11 and 2017 final dividend was $31.62). 4. The conversion price per share for the issuance of shares in relation to the conversion of Westpac Convertible Preference Shares was $29.49.
Schedule of ordinary shares purchased and sold on market	Consolidated and Parent Entity Number Average Price ($) For share-based payment arrangements: Employee share plan (ESP) 1,061,442 25.27 RSP 5 2,707,931 25.55 Westpac Performance Plan (WPP) - share rights exercised 184,043 26.73 Westpac Long Term Variable Reward Plan (LTVR) - options exercised 6 37,831 27.68 As treasury shares: Treasury shares sold (308,263) 26.19 Net number of ordinary shares purchased/(sold) on market 3,682,984 For details of the share-based payment arrangements refer to Note 33. 5. Ordinary shares allocated to employees under the RSP are classified as treasury shares until the shares vest. 6. The average exercise price per share received was $23.40 on the exercise of the LTVR options.
Schedule of reconciliation of movement in reserves	Reconciliation of movement in reserves 1 Consolidated Parent Entity $m Available-for-sale securities reserve Opening balance 37 64 24 70 Impact on adoption of AASB 9 (37) — (24) — Net gains/(losses) from changes in fair value — (104) — (34) Income tax effect — 34 — 13 Transferred to income statements — 66 — (33) Income tax effect — (25) — 6 Exchange differences — 2 — 2 Closing balance — 37 — 24 Debt securities at FVOCI reserve Opening balance — — — — Impact on adoption of AASB 9 33 — 25 — Net gains/(losses) from changes in fair value (47) — (40) — Income tax effect 12 — 10 — Transferred to income statements (29) — (29) — Income tax effect 8 — 8 — Exchange differences 1 — 1 — Closing balance (22) — (25) — Equity securities at FVOCI reserve Opening balance — — — — Impact on adoption of AASB 9 6 — 1 — Net gains/(losses) from changes in fair value 11 — (2) — Closing balance 17 — (1) — Share-based payment reserve Opening balance 1,534 1,431 1,425 1,322 Share-based payment expense 108 103 108 103 Closing balance 1,642 1,534 1,533 1,425 Cash flow hedge reserve Opening balance (125) (154) (69) (94) Net gains/(losses) from changes in fair value (203) (161) (121) (125) Income tax effect 60 47 36 38 Transferred to income statements 197 203 128 160 Income tax effect (58) (60) (39) (48) Closing balance (129) (125) (65) (69) Foreign currency translation reserve Opening balance (351) (529) (307) (481) Exchange differences on translation of foreign operations 311 164 214 175 Gains/(losses) on net investment hedges (129) 17 (52) (1) Transferred to income statements (10) (3) — — Closing balance (179) (351) (145) (307) Other reserves Opening balance (18) (18) 41 41 Transactions with owners — — — — Closing balance (18) (18) 41 41 Total reserves 1,311 1,077 1,338 1,114 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail.

Dividends (Tables)

Dividends (Tables)	12 Months Ended
	Sep. 30, 2019
Dividends
Schedule of dividends not recognised at year end	Consolidated Parent Entity $m Dividends not recognised at year end Since year end the Directors have proposed the following dividends: Final dividend 80 cents per share (2018: 94 cents, 2017: 94 cents) all fully franked at 30% 2,791 3,227 3,186 2,792 3,229 Total dividends not recognised at year end 2,791 3,227 3,186 2,792 3,229

Investments in subsidiaries a_2

Investments in subsidiaries and associates (Tables)	12 Months Ended
	Sep. 30, 2019
Investments in subsidiaries and associates
Summary of ownership percentage of controlled entities	The following table includes the principal controlled entities of the Group as at 30 September 2019. Country of Country of Name Incorporation Name Incorporation Advance Asset Management Limited Australia Westpac Financial Services Limited Australia Asgard Capital Management Limited Australia Westpac General Insurance Limited Australia Asgard Wealth Solutions Limited Australia Westpac General Insurance Services Limited Australia BT Financial Group Pty Limited Australia Westpac Lenders Mortgage Insurance Limited Australia BT Funds Management Limited Australia Westpac Life Insurance Services Limited Australia BT Portfolio Services Limited Australia Westpac Securitisation Holdings Pty Limited Australia Capital Finance Australia Limited Australia BT Funds Management (NZ) Limited New Zealand Crusade ABS Series 2017-1 Trust Australia Westpac Financial Services Group-NZ-Limited New Zealand Crusade ABS Series 2017-1P Trust Australia Westpac Life-NZ-Limited New Zealand Crusade Trust No.2P of 2008 Australia Westpac New Zealand Group Limited New Zealand Series 2008-1M WST Trust Australia Westpac New Zealand Limited New Zealand Series 2014-2 WST Trust Australia Westpac NZ Covered Bond Limited 1 New Zealand Series 2015-1 WST Trust Australia Westpac NZ Operations Limited New Zealand Series 2019-1 WST Trust Australia Westpac NZ Securitisation Limited 1 New Zealand St.George Finance Limited Australia Westpac Securities NZ Limited New Zealand Westpac Covered Bond Trust Australia Westpac Term Pie Fund 2 New Zealand Westpac Equity Holdings Pty Limited Australia Westpac Bank-PNG-Limited Papua New Guinea Westpac Financial Services Group Limited Australia 1. The Group indirectly owns 19% of Westpac NZ Covered Bond Limited (WNZCBL) and Westpac NZ Securitisation Limited (WNZSL), however, due to contractual and structural arrangements both WNZCBL and WNZSL are considered to be controlled entities within the Group. 2. The Group has funding agreements in place with this entity and is deemed to have exposure to the associated risks and rewards. The entity is consolidated as the Group is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. The following controlled entities have been granted relief from compliance with the balance date synchronisation provisions in the Corporations Act 2001: ▪ Westpac Cash PIE Fund; ▪ Westpac Notice Saver PIE Fund; and ▪ Westpac Term PIE Fund. The following material controlled entities are not wholly owned: Percentage Owned St.George Motor Finance Limited 75.0 % 75.0 % Westpac Bank-PNG-Limited 89.9 % 89.9 % Westpac NZ Covered Bond Limited 19.0 % 19.0 % Westpac NZ Securitisation Limited 19.0 % 19.0 %

Structured entities (Tables)

Structured entities (Tables)	12 Months Ended
	Sep. 30, 2019
Structured entities
Schedule of consolidated structured entities	Investment in third party mortgage and Interest other Financing to Group in other Consolidated 2019 asset-backed securitisation managed structured $m securities 2 vehicles funds entities Total Assets Trading securities and financial assets measured at FVIS 1,827 — — 282 2,109 Investment securities 6,940 — — — 6,940 Loans — 20,979 9 22,817 43,805 Life insurance assets — — 4,885 1,879 6,764 Other assets — — 54 — 54 Total on-balance sheet exposures 8,767 20,979 4,948 24,978 59,672 Total notional amounts of off-balance sheet exposures — 5,157 102 10,086 15,345 Maximum exposure to loss 8,767 26,136 5,050 35,064 75,017 Size of structured entities 3 66,015 26,136 71,538 98,983 262,672 Investment in third party mortgage and Interest other Financing to Group in other Consolidated 2018 asset-backed securitisation managed structured $m securities 2 vehicles funds entities Total Assets Trading securities and financial assets measured at FVIS 2,108 — — 139 2,247 Available-for-sale securities 7,352 — — — 7,352 Loans — 21,977 6 22,894 44,877 Life insurance assets — — 4,702 1,843 6,545 Other assets — — 47 — 47 Total on-balance sheet exposures 9,460 21,977 4,755 24,876 61,068 Total notional amounts of off-balance sheet exposures — 5,145 60 7,988 13,193 Maximum exposure to loss 9,460 27,122 4,815 32,864 74,261 Size of structured entities 3 58,976 27,122 66,524 100,427 253,049 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail. 2. The Group's interests in third party mortgage and other asset-backed securities are senior tranches of notes and are investment grade rated. 3. Represented either by the total assets or market capitalisation of the entity, or if not available, the Group's total committed exposure (for lending arrangements and external debt and equity holdings), funds under management (for Group managed funds) or the total value of notes on issue (for investments in third-party asset-backed securities).

Share-based payments (Tables)

Share-based payments (Tables)	12 Months Ended
	Sep. 30, 2019
Share-based payments
Summary of terms and conditions of share-based payment arrangements	Scheme name Westpac Long Term Variable Reward Plan (LTVR) Westpac Performance Plan (WPP) Restricted Share Employee Share Plan Type of share-based payment Share rights (allocated at no cost). Share options (no longer issued since October 2009). Share rights (allocated at no cost). Share options (no longer issued since October 2009). Westpac ordinary shares (allocated at no cost). Westpac ordinary shares (allocated at no cost) of up to $1,000 per employee per year. How it is used Aligns executive remuneration and accountability with shareholder interests over the long term. Primarily used for mandatory deferral of a portion of short-term incentives for New Zealand employees and key employees based outside Australia. Primarily used to reward key employees. To reward eligible Australian employees (unless they have already been provided instruments under another scheme for the previous year). Exercise price: Shares rights Share options Nil The market price of Westpac shares at the start of the performance period Nil The market price of Westpac shares at the start of the performance period. n/a n/a n/a n/a Performance hurdles Relative Total Shareholder return (TSR) over a four year performance period and average cash Return on Equity (cash ROE) over a three year performance period plus one year holding lock, each applying to half of the award (commencing with the 2016 LTVR award) 1 . None None None Service conditions Continued employment throughout the vesting period or as determined by the Board. Continued employment throughout the vesting period or as determined by the Board. Continued employment throughout the restriction period or as determined by the Board. Shares must normally remain within the ESP for three years from granting unless the employee leaves Westpac. Vesting period (period over which expenses are recognised) 4 years 1 Defined period set out at time of grant. Defined period set out at time of grant. 1 year Treatment at end of term Lapse if not exercised. Lapse if not exercised. Vested shares are released from the RSP at the end of the vesting period. Shares granted prior to October 2009 may be held in the RSP for up to 10 years from the grant date. Shares are released at the end of the restriction period or when the employee leaves Westpac. Does the employee receive dividends and voting rights during the vesting period? No No Yes Yes 1. For the 2015 LTVR awards, the relative TSR is subject to a four year performance period and cash EPS compound annual growth rate (CAGR) over a three year performance period plus one year holding lock. For awards granted for the periods 2011 to 2014 both the relative TSR and cash EPS CAGR hurdles are subject to a three year performance and vesting period. Relative TSR hurdled awards granted prior to 2011 were measured over an initial three year performance period with subsequent performance testing possible at the fourth and fifth anniversaries however further vesting may only occur if the relative TSR ranking has improved.
Westpac Long Term Variable Reward Plan (LTVR)
Share-based payments
Schedule of share-based payment schemes	Westpac Long Term Variable Reward Plan (LTVR) Outstanding at Granted Exercised Lapsed Outstanding 1 October during during during Outstanding at and exercisable at 2019 the year the year the year 30 September 2019 30 September 2019 Share options 52,350 — 37,831 14,519 — — Weighted average exercise price $ 23.40 — $ 23.40 — — — Weighted average remaining contractual life 0 years — Share rights 4,712,843 1,169,704 — 1,327,958 4,554,589 3,719 Weighted average remaining contractual life 10.9 years 12.3 years 2018 1 Oct 2017 30 Sept 2018 Share options 256,840 — 103,686 100,804 52,350 52,350 Weighted average exercise price $ 26.36 — $ 24.23 — $ 23.40 $ 23.40 Performance share rights 5,231,904 808,290 2,929 1,324,422 4,712,843 3,719
Westpac Performance Plan (WPP)
Share-based payments
Schedule of share-based payment schemes	Westpac Performance Plan (WPP) Outstanding Outstanding at Granted during Exercised Lapsed during Outstanding at and exercisable at 2019 1 October 2018 the year during the year the year 30 September 2019 30 September 2019 Share rights One-year vesting period 140,531 145,296 82,287 5,652 197,888 59,413 Two-year vesting period 253,390 146,139 78,180 31,440 289,909 48,833 Three-year vesting period 117,739 20,169 23,576 19,083 95,249 22,700 Four-year vesting period 162,229 74,042 — 32,851 203,420 — Total share rights 673,889 385,646 184,043 89,026 786,466 130,946 Weighted average remaining contractual life 12.4 years 12.8 years 2018 1 Oct 2017 30 Sept 2018 Performance share rights 619,779 246,902 156,691 36,101 673,889 124,525
RSP
Share-based payments
Schedule of share-based payment schemes	Outstanding at Granted during Forfeited Outstanding at Allocation date 1 1 October 2018 the year Released during the year 30 September 2019 Granted prior to October 2009 346,732 — 346,732 — — Granted subsequent to October 2009 3,842,912 2,861,262 1,867,777 63,226 4,773,171 Total 2019 4,189,644 2,861,262 2,214,509 63,226 4,773,171 Total 2018 4,204,753 2,479,975 2,225,245 269,839 4,189,644 1. For awards made prior to October 2009, shares may be held in the RSP for up to 10 years from the date they are granted. For awards made from October 2009, shares are released from the RSP on vesting.
Employee Share Plan (ESP)
Share-based payments
Schedule of share-based payment schemes	Average number of shares Total Number Allocation Number of allocated per of shares Market Total date participants participant allocated price per share 2 fair value 2019 23 November 2018 27,245 39 1,062,555 $ 25.35 $ 26,935,769 2018 24 November 2017 27,557 31 854,267 $ 31.80 $ 27,165,691 2. The market price per share for the allocation is based on the five day volume-weighted average price up to the grant date.

Superannuation commitments (Tab

Superannuation commitments (Tables)	12 Months Ended
	Sep. 30, 2019
Superannuation commitments
Schedule of contributions	Consolidated Parent Entity $m Employer contributions 28 27 30 Member contributions 11 11 11
Summary of expenses recognised	Consolidated Parent Entity $m Current service cost 33 32 37 Net interest cost on net benefit liability (2) (2) — Total defined benefit expense 31 30 37
Schedule of defined benefit balances recognised	Consolidated Parent Entity $m Benefit obligation at end of the year 2,799 2,314 2,710 2,239 Fair value of plan assets at end of the year 2,464 2,378 2,405 2,319 Net surplus/(deficit) (335) 64 (305) 80 Defined benefit surplus 1 73 89 73 89 Defined benefit deficit 2 (408) (25) (378) (9) Net surplus/(deficit) (335) 64 (305) 80 1. The defined benefit surplus is recognised in other assets. 2. The defined benefit deficit is recognised in other liabilities.
Schedule of defined benefit plan significant assumptions	2019 2018 Australian Overseas Australian Overseas Consolidated and Parent Entity Funds Funds Funds Funds Discount rate 2.6 % 1.1% - 1.8 % 4.1 % 2.6% - 2.9 % Salary increases 2.4 % 3.0% - 4.9 % 2.9 % 3% - 5 % Inflation rate (pensioners received inflationary increase) 1.4 % 2.0% - 3.4 % 1.9 % 2% - 3.5 % Life expectancy of a 60-year-old male 31.1 27.9 - 28.1 31.0 27.9 - 28.4 Life expectancy of a 60-year-old female 34.0 29.3 - 29.5 33.9 29.4 - 29.6
Summary of sensitivity analysis of essential assumptions	Increase in obligation Change in assumption 0.5% decrease in discount rate 205 120 0.5% increase in annual salary increases 14 8 0.5% increase in inflation rate (pensioners receive inflationary increases) 188 111 1 year increase in life expectancy 45 38
Schedule of asset allocation	2019 2018 Consolidated and Parent Entity Australian Overseas Australian Overseas % Funds Funds Funds Funds Cash 3 % 3 % 5 % 2 % Equity instruments 45 % 7 % 45 % 7 % Debt instruments 28 % 5 % 28 % 80 % Property 10 % 1 % 10 % 1 % Other assets 14 % 84 % 12 % 10 % Total 100 % 100 % 100 % 100 %

Auditor's remuneration (Tables)

Auditor's remuneration (Tables)	12 Months Ended
	Sep. 30, 2019
Auditor's remuneration
Schedule of fees payable to auditor	Consolidated Parent Entity $'000 Audit and audit-related fees Audit fees PwC Australia 28,153 19,999 28,025 19,967 Overseas PwC network firms 3,216 3,338 321 68 Total audit fees 31,369 23,337 28,346 20,035 Audit-related fees PwC Australia 3,569 2,316 3,418 2,224 Overseas PwC network firms 128 117 2 — Total audit-related fees 3,697 2,433 3,420 2,224 Total audit and audit-related fees 35,066 25,770 31,766 22,259 Tax fees PwC Australia 53 169 53 49 Total tax fees 53 169 53 49 Other fees PwC Australia 70 1,581 70 1,501 Overseas PwC network firms 502 — 502 — Total other fees 572 1,581 572 1,501 Total audit and non-audit fees 35,691 27,520 32,391 23,809

Related party disclosures (Tabl

Related party disclosures (Tables)	12 Months Ended
	Sep. 30, 2019
Related party disclosures
Schedule of remuneration of KMP	Short-term Post Employment Other Long-term Termination Share-based $ Benefits Benefits Benefits Benefits Payments Total Consolidated 2019 23,805,197 712,883 36,572 558,984 20,691,480 45,805,116 2018 23,210,820 618,631 297,495 — 16,086,623 40,213,569 Parent Entity 2019 22,515,477 625,173 36,572 558,984 19,783,900 43,520,106 2018 21,807,008 537,187 297,495 — 15,301,417 37,943,107
Schedule of loans provided and interest charged to KMP and their related parties	Interest Payable Closing Loan Number of KMP $ for the Year Balance with Loans 2019 672,167 31,718,007 14 2018 650,969 17,498,526 13
Schedule of performance options and share rights held by key management personnel, including their related parties	Number of Latest Date of Exercise Share Rights Managing Director & Chief Executive Officer Brian Hartzer Ranges from 1 October 2030 to 1 October 2033 Group Executives Craig Bright Ranges from 1 October 2033 to 1 October 2033 Lyn Cobley Ranges from 1 October 2030 to 1 October 2033 Peter King Ranges from 1 October 2030 to 1 October 2033 Rebecca Lim Ranges from 1 October 2030 to 1 October 2033 David Lindberg Ranges from 1 October 2030 to 1 April 2034 Carolyn McCann Ranges from 1 October 2030 to 1 October 2033 David McLean Ranges from 1 October 2022 to 1 October 2033 Christine Parker Ranges from 1 October 2030 to 1 October 2033 David Stephen Ranges from 1 October 2032 to 1 October 2033 Gary Thursby Ranges from 1 October 2030 to 1 October 2033 Alastair Welsh Ranges from 1 October 2030 to 1 October 2030 Former Group Executive Brad Cooper Ranges from 1 October 2030 to 1 October 2033 Dave Curran Ranges from 1 October 2030 to 1 October 2033 George Frazis Ranges from 1 October 2030 to 1 October 2033

Notes to the consolidated cash

Notes to the consolidated cash flow statement (Tables)	12 Months Ended
	Sep. 30, 2019
Notes to the cash flow statements
Summary of reconciliation of net cash provided by/(used in) operating activities to net profit	Consolidated Parent Entity $m Net profit for the year 6,790 8,099 7,997 7,121 8,144 Adjustments: Depreciation, amortisation and impairment 1,079 1,144 1,269 1,082 952 Impairment charges 966 889 1,021 893 820 Net (decrease)/increase in current and deferred tax (541) (96) (34) (804) (598) (Increase)/decrease in accrued interest receivable 132 (83) (75) 98 (74) (Decrease)/increase in accrued interest payable (341) 241 148 (321) 217 (Decrease)/increase in provisions 1,143 289 219 1,214 294 Other non-cash items (832) 332 (419) (329) 420 Cash flows from operating activities before changes in operating assets and liabilities 8,396 10,815 10,126 8,954 10,175 Net (increase)/decrease in derivative financial instruments 7,605 8,584 (5,042) 6,581 8,263 Net (increase)/decrease in life insurance assets and liabilities (134) (230) 219 — - (Increase)/decrease in other operating assets: Collateral paid (847) 969 2,320 (755) 662 Trading securities and other financial assets measured at fair value (7,629) 3,492 (4,729) (7,358) 2,815 Loans (4,188) (24,740) (26,815) (3,312) (23,661) Other financial assets 336 859 466 324 502 Other assets (13) 10 67 (41) 33 (Decrease)/increase in other operating liabilities: Collateral received 1,007 (295) 739 1,004 (606) Deposits and other borrowings 1,113 23,928 23,062 963 20,783 Other financial liabilities 1,463 (3,632) 2,506 1,555 (3,742) Other liabilities (5) 10 (82) (24) 17 Net cash provided by/(used in) operating activities 7,104 19,770 2,837 7,891 15,241 1. The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet. Comparatives have been restated. Refer to Note 1 for further detail.
Summary of the assets and liabilities over which control ceased	Consolidated Parent Entity $m Assets: Cash and balances with central banks 3 10 — — — Trading securities and financial assets measured at fair value 3 — — — — Property and equipment — 2 — — — Deferred tax assets — 4 — — — Intangible assets — 15 — — — Other financial assets 3 5 — — — Total assets 9 36 — — — Liabilities: Provisions — 2 — — — Other liabilities — 3 — — — Total liabilities — 5 — — — Total equity attributable to owners of Westpac Banking Corporation 9 31 — — — Cash proceeds (net of transaction costs) 2 19 — — — Total consideration 2 19 — — — Reserves recycled to income statement 10 3 — — — Gain/(loss) on disposal 3 (9) — — — Reconciliation of cash proceeds from disposal Cash proceeds received (net of transaction costs) 2 19 — — — Less: Cash deconsolidated (3) (10) — — — Cash consideration (paid)/received (net of transaction costs and cash held) (1) 9 — — —
Schedule of non-cash financing activities	Consolidated Parent Entity $m Shares issued under the dividend reinvestment plan 1,489 631 1,452 1,489 631 Shares issued from the conversion of Westpac CPS — 566 — — 566

Financial statements preparat_4

Financial statements preparation - Voluntary presentation changes, balance sheet (Details) - AUD ($) $ in Millions		Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2017
Assets
Cash and balances with central banks	[1]	$ 20,059		$ 26,788
Collateral paid	[1]	5,930		4,787
Trading securities and financial assets measured at FVIS		31,781	[1]	23,132	[1]	$ 25,983
Regulatory deposits with central banks overseas		330		357
Other financial assets	[1]	5,367		5,517
Other assets	[1]	807		621
All other assets				818,747
Total assets	[1]	906,626		879,592
Liabilities
Collateral received	[1]	3,287		2,184
Other financial liabilities	[1]	29,215		28,105
Other liabilities	[1]	2,238		1,338
All other liabilities				783,392
Total liabilities	[1]	841,119		815,019
Reported
Assets
Cash and balances with central banks				26,431
Receivables due from other financial institutions				5,790
Trading securities and financial assets measured at FVIS				22,134
Regulatory deposits with central banks overseas				1,355
Other assets				5,135
All other assets				818,747
Total assets				879,592
Liabilities
Payables due to other financial institutions				18,137
Other financial liabilities at FVIS				4,297
Other liabilities				9,193
All other liabilities				783,392
Total liabilities				815,019
Presentation changes
Assets
Cash and balances with central banks				357
Receivables due from other financial institutions				(5,790)
Collateral paid				4,787
Trading securities and financial assets measured at FVIS				998
Regulatory deposits with central banks overseas				(1,355)
Other financial assets				5,517
Other assets				(4,514)
Liabilities
Payables due to other financial institutions				(18,137)
Collateral received				2,184
Other financial liabilities at FVIS				(4,297)
Other financial liabilities				28,105
Other liabilities				(7,855)
Parent Entity
Assets
Cash and balances with central banks	[1]	17,692		24,976
Collateral paid	[1]	5,773		4,722
Trading securities and financial assets measured at FVIS	[1]	29,565		21,415
Regulatory deposits with central banks overseas		224		250
Other financial assets	[1]	4,615		4,666
Other assets	[1]	420		311
All other assets				867,140
Total assets	[1]	949,739		923,230
Liabilities
Collateral received	[1]	2,849		1,748
Other financial liabilities	[1]	28,516		27,266
Other liabilities	[1]	1,064		257
All other liabilities				838,603
Total liabilities	[1]	$ 892,901		867,874
Parent Entity | Reported
Assets
Cash and balances with central banks				24,726
Receivables due from other financial institutions				5,711
Trading securities and financial assets measured at FVIS				20,417
Regulatory deposits with central banks overseas				1,248
Other assets				3,988
All other assets				867,140
Total assets				923,230
Liabilities
Payables due to other financial institutions				17,682
Other financial liabilities at FVIS				4,297
Other liabilities				7,292
All other liabilities				838,603
Total liabilities				867,874
Parent Entity | Presentation changes
Assets
Cash and balances with central banks				250
Receivables due from other financial institutions				(5,711)
Collateral paid				4,722
Trading securities and financial assets measured at FVIS				998
Regulatory deposits with central banks overseas				(1,248)
Other financial assets				4,666
Other assets				(3,677)
Liabilities
Payables due to other financial institutions				(17,682)
Collateral received				1,748
Other financial liabilities at FVIS				(4,297)
Other financial liabilities				27,266
Other liabilities				$ (7,035)
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Financial statements preparat_5

Financial statements preparation - Voluntary presentation changes, net interest income (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Interest income
Cash and balances with central banks			$ 326	$ 242
Collateral paid			129	96
Net ineffectiveness on qualifying hedges			(18)	(22)
Trading securities and financial assets measured at FVIS			564	574
Available-for-sale securities			1,914	1,795
Loans			29,621	28,504
Other interest income			35	43
Total interest income	[1]	$ 33,222	32,571	31,232
Interest expense
Collateral received			(45)	(19)
Deposits and other borrowings			(9,021)	(8,868)
Trading liabilities			(959)	(2,065)
Debt issues			(4,480)	(3,585)
Loan capital			(774)	(693)
Bank levy			(378)	(95)
Other interest expense			(409)	(391)
Total interest expense	[1]	(16,315)	(16,066)	(15,716)
Net interest income	[1]	16,907	16,505	15,516
Reported
Interest income
Cash and balances with central banks			325	241
Receivables due from other financial institutions			108	110
Net ineffectiveness on qualifying hedges			(18)	(22)
Trading securities and financial assets measured at FVIS			542	558
Available-for-sale securities			1,914	1,795
Loans			29,621	28,504
Regulatory deposits with central banks overseas			23	17
Other interest income			56	29
Total interest income			32,571	31,232
Interest expense
Payables due to other financial institutions			(319)	(279)
Deposits and other borrowings			(9,021)	(8,868)
Trading liabilities			(959)	(2,065)
Debt issues			(4,480)	(3,585)
Loan capital			(774)	(693)
Bank levy			(378)	(95)
Other interest expense			(135)	(131)
Total interest expense			(16,066)	(15,716)
Net interest income			16,505	15,516
Presentation changes
Interest income
Cash and balances with central banks			1	1
Receivables due from other financial institutions			(108)	(110)
Collateral paid			129	96
Trading securities and financial assets measured at FVIS			22	16
Regulatory deposits with central banks overseas			(23)	(17)
Other interest income			(21)	14
Interest expense
Payables due to other financial institutions			319	279
Collateral received			(45)	(19)
Other interest expense			(274)	$ (260)
Parent Entity
Interest income
Cash and balances with central banks			301
Collateral paid			126
Net ineffectiveness on qualifying hedges			(22)
Trading securities and financial assets measured at FVIS			521
Available-for-sale securities			1,743
Loans			25,801
Due from subsidiaries			4,328
Other interest income			32
Total interest income	[1]	33,512	32,830
Interest expense
Collateral received			(41)
Deposits and other borrowings			(7,817)
Trading liabilities			(754)
Debt issues			(3,958)
Due to subsidiaries			(4,851)
Loan capital			(774)
Bank levy			(378)
Other interest expense			(404)
Total interest expense	[1]	(19,295)	(18,977)
Net interest income	[1]	$ 14,217	13,853
Parent Entity | Reported
Interest income
Cash and balances with central banks			300
Receivables due from other financial institutions			102
Net ineffectiveness on qualifying hedges			(22)
Trading securities and financial assets measured at FVIS			499
Available-for-sale securities			1,743
Loans			25,801
Regulatory deposits with central banks overseas			23
Due from subsidiaries			4,328
Other interest income			56
Total interest income			32,830
Interest expense
Payables due to other financial institutions			(314)
Deposits and other borrowings			(7,817)
Trading liabilities			(754)
Debt issues			(3,958)
Due to subsidiaries			(4,851)
Loan capital			(774)
Bank levy			(378)
Other interest expense			(131)
Total interest expense			(18,977)
Net interest income			13,853
Parent Entity | Presentation changes
Interest income
Cash and balances with central banks			1
Receivables due from other financial institutions			(102)
Collateral paid			126
Trading securities and financial assets measured at FVIS			22
Regulatory deposits with central banks overseas			(23)
Other interest income			(24)
Interest expense
Payables due to other financial institutions			314
Collateral received			(41)
Other interest expense			$ (273)
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Financial statements preparat_6

Financial statements preparation - Voluntary presentation changes, non-interest income and operating expenses (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Income statement
Net interest income	[1]	$ 16,907	$ 16,505	$ 15,516
Net fee income			2,424	2,603
Net wealth management and insurance income	[1]	1,029	2,061	1,800
Trading income	[1]	929	945	1,202
Other income		129	72	529
Net operating income before operating expenses and impairment charges	[1]	20,649	22,007	21,650
Operating expenses	[1]	(10,106)	(9,566)	(9,282)
Impairment charges	[1]	(794)	(710)	(853)
Profit before income tax	[1]	9,749	11,731	11,515
Income tax expense	[1]	(2,959)	(3,632)	(3,518)
Net profit for the year	[1]	6,790	8,099	7,997
Net fee income
Facility fees		730	1,365	1,350
Transaction fees		1,225	1,182	1,258
Other non-risk fee income			98	229
Fee income		1,879	2,645	2,837
Credit card loyalty programs		(121)	(126)	(152)
Transaction fee related expenses		(103)	(95)	(82)
Fee expenses		(224)	(221)	(234)
Net fee income	[1]	1,655	2,424	2,603
Operating expenses (extract)
Total other expenses		1,726	1,536	1,500
Total operating expenses	[1]	10,106	9,566	9,282
Reported
Income statement
Net interest income			16,505	15,516
Non-interest income			5,628	6,286
Net operating income before operating expenses and impairment charges			22,133	21,802
Operating expenses			(9,692)	(9,434)
Impairment charges			(710)	(853)
Profit before income tax			11,731	11,515
Income tax expense			(3,632)	(3,518)
Net profit for the year			8,099	7,997
Net fee income
Facility fees			1,347	1,333
Transaction fees			1,105	1,193
Other non-risk fee income			98	229
Fee income			2,550	2,755
Net fee income			2,550	2,755
Operating expenses (extract)
Credit card loyalty programs			126	152
Total other expenses			1,662	1,652
Total operating expenses			9,692	9,434
Presentation changes
Income statement
Non-interest income			(5,628)	(6,286)
Net fee income			2,424	2,603
Net wealth management and insurance income			2,061	1,800
Trading income			945	1,202
Other income			72	529
Net operating income before operating expenses and impairment charges			(126)	(152)
Operating expenses			126	152
Net fee income
Facility fees			18	17
Transaction fees			77	65
Fee income			95	82
Credit card loyalty programs			(126)	(152)
Transaction fee related expenses			(95)	(82)
Fee expenses			(221)	(234)
Net fee income			(126)	(152)
Operating expenses (extract)
Credit card loyalty programs			(126)	(152)
Total other expenses			(126)	(152)
Total operating expenses			(126)	$ (152)
Parent Entity
Income statement
Net interest income	[1]	14,217	13,853
Net fee income			2,172
Trading income	[1]	956	919
Other income		2,684	2,633
Net operating income before operating expenses and impairment charges	[1]	18,779	19,577
Operating expenses	[1]	(8,631)	(8,000)
Impairment charges	[1]	(750)	(682)
Profit before income tax	[1]	9,398	10,895
Income tax expense	[1]	(2,277)	(2,751)
Net profit for the year	[1]	7,121	8,144
Net fee income
Facility fees		680	1,351
Transaction fees		1,046	939
Other non-risk fee income			54
Fee income		1,088	2,344
Credit card loyalty programs		(90)	(101)
Transaction fee related expenses		(76)	(71)
Fee expenses		(166)	(172)
Net fee income	[1]	922	2,172
Operating expenses (extract)
Total other expenses		1,485	1,256
Total operating expenses	[1]	$ 8,631	8,000
Parent Entity | Reported
Income statement
Net interest income			13,853
Non-interest income			5,825
Net operating income before operating expenses and impairment charges			19,678
Operating expenses			(8,101)
Impairment charges			(682)
Profit before income tax			10,895
Income tax expense			(2,751)
Net profit for the year			8,144
Net fee income
Facility fees			1,333
Transaction fees			886
Other non-risk fee income			54
Fee income			2,273
Net fee income			2,273
Operating expenses (extract)
Credit card loyalty programs			101
Total other expenses			1,357
Total operating expenses			8,101
Parent Entity | Presentation changes
Income statement
Non-interest income			(5,825)
Net fee income			2,172
Trading income			919
Other income			2,633
Net operating income before operating expenses and impairment charges			(101)
Operating expenses			101
Net fee income
Facility fees			18
Transaction fees			53
Fee income			71
Credit card loyalty programs			(101)
Transaction fee related expenses			(71)
Fee expenses			(172)
Net fee income			(101)
Operating expenses (extract)
Credit card loyalty programs			(101)
Total other expenses			(101)
Total operating expenses			$ (101)
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Financial statements preparat_7

Financial statements preparation - Standards adopted during the year (Details) $ in Millions	Oct. 01, 2018AUD ($)
AASB 9 Financial Instruments (December 2014) (AASB 9)
Remeasurement, AASB 9 changes, retained earnings	$ (722)
AASB 15 Revenue from Contracts with Customers (AASB 15)
Remeasurement, AASB 15 changes, retained earnings	(5)
Parent Entity
AASB 9 Financial Instruments (December 2014) (AASB 9)
Remeasurement, AASB 9 changes, retained earnings	(495)
AASB 15 Revenue from Contracts with Customers (AASB 15)
Remeasurement, AASB 15 changes, retained earnings	$ (7)

Financial statements preparat_8

Financial statements preparation - Impact of the adoption of AASB 9 - impairment (Details) - AUD ($) $ in Millions	Oct. 01, 2018	Sep. 30, 2018
Provision for ECL
Transition to AASB 9
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9		$ 3,053
ECL on amortised cost financial instruments	$ 989
ECL on debt securities measured at FVOCI	2
Provisions for Impairment, carrying amount immediately after initial adoption of AASB 9	4,044
Provisions on loans
Transition to AASB 9
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9		2,814
ECL on amortised cost financial instruments	882
Provisions for Impairment, carrying amount immediately after initial adoption of AASB 9	3,696
Provisions for credit commitments
Transition to AASB 9
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9		239
ECL on amortised cost financial instruments	98
Provisions for Impairment, carrying amount immediately after initial adoption of AASB 9	337
Loss allowance on debt securities at FVOCI
Transition to AASB 9
ECL on debt securities measured at FVOCI	2
Provisions for Impairment, carrying amount immediately after initial adoption of AASB 9	2
Provisions on debt securities and other financial assets at amortised cost
Transition to AASB 9
ECL on amortised cost financial instruments	9
Provisions for Impairment, carrying amount immediately after initial adoption of AASB 9	9
Parent Entity | Provision for ECL
Transition to AASB 9
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9		2,613
ECL on amortised cost financial instruments	846
ECL on debt securities measured at FVOCI	2
Provisions for Impairment, carrying amount immediately after initial adoption of AASB 9	3,461
Parent Entity | Provisions on loans
Transition to AASB 9
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9		2,407
ECL on amortised cost financial instruments	751
Provisions for Impairment, carrying amount immediately after initial adoption of AASB 9	3,158
Parent Entity | Provisions for credit commitments
Transition to AASB 9
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9		$ 206
ECL on amortised cost financial instruments	95
Provisions for Impairment, carrying amount immediately after initial adoption of AASB 9	301
Parent Entity | Loss allowance on debt securities at FVOCI
Transition to AASB 9
ECL on debt securities measured at FVOCI	2
Provisions for Impairment, carrying amount immediately after initial adoption of AASB 9	$ 2

Financial statements preparat_9

Financial statements preparation - Impact of the adoption of AASB 9 - classification and measurement (Details) - AUD ($) $ in Millions	Oct. 01, 2018	Sep. 30, 2018
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	$ 864,584
Financial liabilities, carrying amount immediately after initial application of AASB 9	811,439
Long term debt with equity-like characteristics		$ 6,511,000
Collateral received
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	2,184
Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	559,285
Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	28,105
Derivative financial instruments
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	24,407
Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	172,596
Due to subsidiaries
Basis of measurement
Reclassified from amortised cost to FVIS		523
Life insurance liabilities
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	7,597
Loan capital
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	17,265
Cash and balances with central banks
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	26,788
Collateral paid
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	4,787
Trading securities and financial assets measured at FVIS
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	23,132
Derivative financial instruments
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	24,101
Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	61,119
Loans
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	709,690
Due from subsidiaries
Basis of measurement
Reclassified from amortised cost to FVIS		278
Life insurance assets
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	9,450
Other financial assets
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	5,517
AASB 139
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		864,584
Financial liabilities, carrying amount immediately before initial application of AASB 9		811,439
AASB 139 | Collateral received
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		2,184
AASB 139 | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		559,285
AASB 139 | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		28,105
AASB 139 | Derivative financial instruments
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		24,407
AASB 139 | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		172,596
AASB 139 | Life insurance liabilities
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		7,597
AASB 139 | Loan capital
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		17,265
AASB 139 | Amortised cost
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		730,605
AASB 139 | Amortised cost | Collateral received
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		2,184
AASB 139 | Amortised cost | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		518,107
AASB 139 | Amortised cost | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		23,808
AASB 139 | Amortised cost | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		169,241
AASB 139 | Amortised cost | Loan capital
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		17,265
AASB 139 | FVIS
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		80,834
AASB 139 | FVIS | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		41,178
AASB 139 | FVIS | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		4,297
AASB 139 | FVIS | Derivative financial instruments
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		24,407
AASB 139 | FVIS | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		3,355
AASB 139 | FVIS | Life insurance liabilities
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		7,597
AASB 139 | Cash and balances with central banks
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		26,788
AASB 139 | Collateral paid
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		4,787
AASB 139 | Trading securities and financial assets measured at FVIS
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		23,132
AASB 139 | Derivative financial instruments
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		24,101
AASB 139 | Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		61,119
AASB 139 | Loans
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		709,690
AASB 139 | Life insurance assets
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		9,450
AASB 139 | Other financial assets
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		5,517
AASB 139 | Amortised cost
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		746,236
AASB 139 | Amortised cost | Cash and balances with central banks
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		26,788
AASB 139 | Amortised cost | Collateral paid
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		4,787
AASB 139 | Amortised cost | Loans
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		709,144
AASB 139 | Amortised cost | Loans | Reported
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		706,440
AASB 139 | Amortised cost | Other financial assets
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		5,517
AASB 139 | FVIS
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		57,229
AASB 139 | FVIS | Trading securities and financial assets measured at FVIS
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		23,132
AASB 139 | FVIS | Derivative financial instruments
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		24,101
AASB 139 | FVIS | Loans
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		546
AASB 139 | FVIS | Loans | Reported
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		3,250
AASB 139 | FVIS | Life insurance assets
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		9,450
AASB 139 | FVOCI
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		61,119
AASB 139 | FVOCI | Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		61,119
AASB 9 | Amortised cost
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	730,605
AASB 9 | Amortised cost | Collateral received
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	2,184
AASB 9 | Amortised cost | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	518,107
AASB 9 | Amortised cost | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	23,808
AASB 9 | Amortised cost | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	169,241
AASB 9 | Amortised cost | Loan capital
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	17,265
AASB 9 | FVIS
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	80,834
AASB 9 | FVIS | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	41,178
AASB 9 | FVIS | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	4,297
AASB 9 | FVIS | Derivative financial instruments
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	24,407
AASB 9 | FVIS | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	3,355
AASB 9 | FVIS | Life insurance liabilities
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	7,597
AASB 9 | Amortised cost
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	746,991
AASB 9 | Amortised cost | Cash and balances with central banks
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	26,788
AASB 9 | Amortised cost | Collateral paid
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	4,787
AASB 9 | Amortised cost | Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	811
AASB 9 | Amortised cost | Loans
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	709,088
AASB 9 | Amortised cost | Other financial assets
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	5,517
AASB 9 | FVIS
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	57,560
AASB 9 | FVIS | Trading securities and financial assets measured at FVIS
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	23,132
AASB 9 | FVIS | Derivative financial instruments
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	24,101
AASB 9 | FVIS | Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	275
AASB 9 | FVIS | Loans
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	602
AASB 9 | FVIS | Life insurance assets
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	9,450
AASB 9 | FVOCI
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	60,033
AASB 9 | FVOCI | Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	60,033
AASB 9 | Debt securities
Basis of measurement
Reclassification of available-for-sale debt securities to investment securites measured at amortised cost	811
Reclassification of available-for-sale debt securities to investment securites measured at FVOCI	60,000
AASB 9 | Equity securities
Basis of measurement
Reclassification of available-for-sale debt securities to trading securities and financial assets measured at FVIS	275
Equity securities irrevocably designated to be measured at FVOCI from available-for-sale securities	109
AASB 9 | Loans
Basis of measurement
Reclassification of loans from amortised cost to FVIS	56
Parent Entity | AASB 139
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		900,108
Financial liabilities, carrying amount immediately before initial application of AASB 9		865,664
Parent Entity | AASB 139 | Collateral received
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		1,748
Parent Entity | AASB 139 | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		500,468
Parent Entity | AASB 139 | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		27,266
Parent Entity | AASB 139 | Derivative financial instruments
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		24,229
Parent Entity | AASB 139 | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		152,288
Parent Entity | AASB 139 | Due to subsidiaries
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		142,400
Parent Entity | AASB 139 | Loan capital
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		17,265
Parent Entity | AASB 139 | Amortised cost
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		793,330
Parent Entity | AASB 139 | Amortised cost | Collateral received
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		1,748
Parent Entity | AASB 139 | Amortised cost | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		460,406
Parent Entity | AASB 139 | Amortised cost | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		22,969
Parent Entity | AASB 139 | Amortised cost | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		149,065
Parent Entity | AASB 139 | Amortised cost | Due to subsidiaries
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		141,877
Parent Entity | AASB 139 | Amortised cost | Loan capital
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		17,265
Parent Entity | AASB 139 | FVIS
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		72,334
Parent Entity | AASB 139 | FVIS | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		40,062
Parent Entity | AASB 139 | FVIS | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		4,297
Parent Entity | AASB 139 | FVIS | Derivative financial instruments
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		24,229
Parent Entity | AASB 139 | FVIS | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		3,223
Parent Entity | AASB 139 | FVIS | Due to subsidiaries
Basis of measurement
Financial liabilities, carrying amount immediately before initial application of AASB 9		523
Parent Entity | AASB 139 | Cash and balances with central banks
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		24,976
Parent Entity | AASB 139 | Collateral paid
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		4,722
Parent Entity | AASB 139 | Trading securities and financial assets measured at FVIS
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		21,415
Parent Entity | AASB 139 | Derivative financial instruments
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		23,562
Parent Entity | AASB 139 | Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		56,513
Parent Entity | AASB 139 | Loans
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		630,168
Parent Entity | AASB 139 | Due from subsidiaries
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		134,086
Parent Entity | AASB 139 | Other financial assets
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		4,666
Parent Entity | AASB 139 | Amortised cost
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		797,794
Parent Entity | AASB 139 | Amortised cost | Cash and balances with central banks
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		24,976
Parent Entity | AASB 139 | Amortised cost | Collateral paid
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		4,722
Parent Entity | AASB 139 | Amortised cost | Loans
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		629,622
Parent Entity | AASB 139 | Amortised cost | Loans | Reported
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		626,918
Parent Entity | AASB 139 | Amortised cost | Due from subsidiaries
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		133,808
Parent Entity | AASB 139 | Amortised cost | Other financial assets
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		4,666
Parent Entity | AASB 139 | FVIS
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		45,801
Parent Entity | AASB 139 | FVIS | Trading securities and financial assets measured at FVIS
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		21,415
Parent Entity | AASB 139 | FVIS | Derivative financial instruments
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		23,562
Parent Entity | AASB 139 | FVIS | Loans
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		546
Parent Entity | AASB 139 | FVIS | Loans | Reported
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		3,250
Parent Entity | AASB 139 | FVIS | Due from subsidiaries
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		278
Parent Entity | AASB 139 | FVOCI
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		56,513
Parent Entity | AASB 139 | FVOCI | Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately before initial application of AASB 9		$ 56,513
Parent Entity | AASB 9
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	900,108
Financial liabilities, carrying amount immediately after initial application of AASB 9	865,664
Parent Entity | AASB 9 | Collateral received
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	1,748
Parent Entity | AASB 9 | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	500,468
Parent Entity | AASB 9 | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	27,266
Parent Entity | AASB 9 | Derivative financial instruments
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	24,229
Parent Entity | AASB 9 | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	152,288
Parent Entity | AASB 9 | Due to subsidiaries
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	142,400
Parent Entity | AASB 9 | Loan capital
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	17,265
Parent Entity | AASB 9 | Amortised cost
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	793,330
Parent Entity | AASB 9 | Amortised cost | Collateral received
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	1,748
Parent Entity | AASB 9 | Amortised cost | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	460,406
Parent Entity | AASB 9 | Amortised cost | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	22,969
Parent Entity | AASB 9 | Amortised cost | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	149,065
Parent Entity | AASB 9 | Amortised cost | Due to subsidiaries
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	141,877
Parent Entity | AASB 9 | Amortised cost | Loan capital
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	17,265
Parent Entity | AASB 9 | FVIS
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	72,334
Parent Entity | AASB 9 | FVIS | Deposits and other borrowings
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	40,062
Parent Entity | AASB 9 | FVIS | Other financial liabilities
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	4,297
Parent Entity | AASB 9 | FVIS | Derivative financial instruments
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	24,229
Parent Entity | AASB 9 | FVIS | Debt issues
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	3,223
Parent Entity | AASB 9 | FVIS | Due to subsidiaries
Basis of measurement
Financial liabilities, carrying amount immediately after initial application of AASB 9	523
Parent Entity | AASB 9 | Cash and balances with central banks
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	24,976
Parent Entity | AASB 9 | Collateral paid
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	4,722
Parent Entity | AASB 9 | Trading securities and financial assets measured at FVIS
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	21,415
Parent Entity | AASB 9 | Derivative financial instruments
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	23,562
Parent Entity | AASB 9 | Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	56,513
Parent Entity | AASB 9 | Loans
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	630,168
Parent Entity | AASB 9 | Due from subsidiaries
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	134,086
Parent Entity | AASB 9 | Other financial assets
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	4,666
Parent Entity | AASB 9 | Amortised cost
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	797,748
Parent Entity | AASB 9 | Amortised cost | Cash and balances with central banks
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	24,976
Parent Entity | AASB 9 | Amortised cost | Collateral paid
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	4,722
Parent Entity | AASB 9 | Amortised cost | Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	10
Parent Entity | AASB 9 | Amortised cost | Loans
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	629,566
Parent Entity | AASB 9 | Amortised cost | Due from subsidiaries
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	133,808
Parent Entity | AASB 9 | Amortised cost | Other financial assets
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	4,666
Parent Entity | AASB 9 | FVIS
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	45,857
Parent Entity | AASB 9 | FVIS | Trading securities and financial assets measured at FVIS
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	21,415
Parent Entity | AASB 9 | FVIS | Derivative financial instruments
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	23,562
Parent Entity | AASB 9 | FVIS | Loans
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	602
Parent Entity | AASB 9 | FVIS | Due from subsidiaries
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	278
Parent Entity | AASB 9 | FVOCI
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	56,503
Parent Entity | AASB 9 | FVOCI | Available-for-sale securities
Basis of measurement
Financial assets, carrying amount immediately after initial application of AASB 9	56,503
Parent Entity | AASB 9 | Debt securities
Basis of measurement
Reclassification of available-for-sale debt securities to investment securites measured at amortised cost	10
Reclassification of available-for-sale debt securities to investment securites measured at FVOCI	56,000
Parent Entity | AASB 9 | Equity securities
Basis of measurement
Equity securities irrevocably designated to be measured at FVOCI from available-for-sale securities	67
Parent Entity | AASB 9 | Loans
Basis of measurement
Reclassification of loans from amortised cost to FVIS	$ 56

Financial statements prepara_10

Financial statements preparation - Reconciliation of opening balance sheet (Details) - AUD ($) $ in Millions	Oct. 01, 2019	Oct. 01, 2018	Sep. 30, 2018
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			$ 879,592
Restated Carrying Amount, Liabilities			815,019
Restated Carrying Amount, Net Assets			64,573
Restated Carrying Amount, Equity			64,573
Opening Carrying Amount, Assets		$ 878,958
Opening Carrying Amount, Liabilities		815,110
Opening Carrying Amount, Net Assets		63,848
Opening Carrying Amount, Equity		63,848
Total equity attributable to owners of Westpac Banking Corporation
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			64,521
Opening Carrying Amount, Equity		63,796
Share capital | Ordinary shares
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			36,054
Opening Carrying Amount, Equity		36,054
Share capital | Treasury shares and RSP treasury shares
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			(493)
Opening Carrying Amount, Equity		(493)
Reserves
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			1,077
Opening Carrying Amount, Equity		1,079
Retained profits
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			27,883
Opening Carrying Amount, Equity		27,156
Non-controlling interests
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			52
Opening Carrying Amount, Equity		52
Collateral received
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			2,184
Opening Carrying Amount, Liabilities		2,184
Deposits and other borrowings
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			559,285
Opening Carrying Amount, Liabilities		559,285
Other financial liabilities
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			28,105
Opening Carrying Amount, Liabilities		28,093
Derivative financial instruments
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			24,407
Opening Carrying Amount, Liabilities		24,407
Debt issues
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			172,596
Opening Carrying Amount, Liabilities		172,596
Provisions
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			1,928
Opening Carrying Amount, Liabilities		2,026
Loan capital
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			17,265
Opening Carrying Amount, Liabilities		17,265
All other liabilities
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			9,249
Opening Carrying Amount, Liabilities		9,254
Cash and balances with central banks
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			26,788
Opening Carrying Amount, Assets		26,788
Collateral paid
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			4,787
Opening Carrying Amount, Assets		4,787
Trading securities and financial assets measured at FVIS
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			23,132
Opening Carrying Amount, Assets		23,407
Derivative financial instruments
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			24,101
Opening Carrying Amount, Assets		24,101
Available-for-sale securities
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			61,119
Investment securities
Reconciliation of the opening balance sheet
Opening Carrying Amount, Assets		60,835
Loans (at amortised cost)
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			709,144
Opening Carrying Amount, Assets		708,163
Loans (at fair value)
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			546
Opening Carrying Amount, Assets		602
Other financial assets
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			5,517
Opening Carrying Amount, Assets		5,517
Deferred tax assets
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			1,180
Opening Carrying Amount, Assets		1,480
All other assets
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			23,278
Opening Carrying Amount, Assets		23,278
AASB 9
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Assets		(634)
Remeasurement, AASB 9 changes, Liabilities		86
Remeasurement, AASB 9 changes, Net Assets		(720)
Remeasurement, AASB 9 changes, Equity		(720)
AASB 9 | ECL on amortised cost financial instruments | Provisions on loans
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Assets		882
AASB 9 | ECL on amortised cost financial instruments | Provisions on debt securities at amortised cost
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Assets		9
AASB 9 | ECL on amortised cost financial instruments | Provisions for credit commitments
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Assets		98
AASB 9 | ECL on debt securities measured at FVOCI | Loss allowance on debt securities at FVOCI
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Assets		2
AASB 9 | Total equity attributable to owners of Westpac Banking Corporation
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Equity		(720)
AASB 9 | Reserves
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Equity		2
AASB 9 | Retained profits
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Equity		(722)
AASB 9 | Provisions
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Liabilities		98
AASB 9 | All other liabilities
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Liabilities		(12)
AASB 9 | Trading securities and financial assets measured at FVIS
Reconciliation of the opening balance sheet
Reclassifications, AASB 9 changes, Assets		275
AASB 9 | Available-for-sale securities
Reconciliation of the opening balance sheet
Reclassifications, AASB 9 changes, Assets		(61,119)
AASB 9 | Investment securities
Reconciliation of the opening balance sheet
Reclassifications, AASB 9 changes, Assets		60,844
Remeasurement, AASB 9 changes, Assets		(9)
AASB 9 | Loans (at amortised cost)
Reconciliation of the opening balance sheet
Reclassifications, AASB 9 changes, Assets		(56)
Remeasurement, AASB 9 changes, Assets		(925)
AASB 9 | Loans (at fair value)
Reconciliation of the opening balance sheet
Reclassifications, AASB 9 changes, Assets		56
AASB 9 | Deferred tax assets
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Assets		300
AASB 15
Reconciliation of the opening balance sheet
AASB 15 changes, Liabilities		5
AASB 15 changes, Net Assets		(5)
AASB 15 changes, Equity		(5)
AASB 15 | Total equity attributable to owners of Westpac Banking Corporation
Reconciliation of the opening balance sheet
AASB 15 changes, Equity		(5)
AASB 15 | Retained profits
Reconciliation of the opening balance sheet
AASB 15 changes, Equity		(5)
AASB 15 | Other financial liabilities
Reconciliation of the opening balance sheet
AASB 15 changes, Liabilities		(12)
AASB 15 | All other liabilities
Reconciliation of the opening balance sheet
AASB 15 changes, Liabilities		17
AASB 16 | Forecast
Future developments in accounting standards
Right of use asset	$ 3,400
Lease liabilities	$ 3,400
Parent Entity
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			923,230
Restated Carrying Amount, Liabilities			867,874
Restated Carrying Amount, Net Assets			55,356
Restated Carrying Amount, Equity			55,356
Remeasurement, AASB 9 changes, Assets		(528)
Remeasurement, AASB 9 changes, Liabilities		(35)
Remeasurement, AASB 9 changes, Net Assets		(493)
Remeasurement, AASB 9 changes, Equity		(493)
Opening Carrying Amount, Assets		922,702
Opening Carrying Amount, Liabilities		867,846
Opening Carrying Amount, Net Assets		54,856
Opening Carrying Amount, Equity		54,856
Parent Entity | Total equity attributable to owners of Westpac Banking Corporation
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			55,356
Remeasurement, AASB 9 changes, Equity		(493)
Opening Carrying Amount, Equity		54,856
Parent Entity | Share capital | Ordinary shares
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			36,054
Opening Carrying Amount, Equity		36,054
Parent Entity | Share capital | Treasury shares and RSP treasury shares
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			(508)
Opening Carrying Amount, Equity		(508)
Parent Entity | Reserves
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			1,114
Remeasurement, AASB 9 changes, Equity		2
Opening Carrying Amount, Equity		1,116
Parent Entity | Retained profits
Reconciliation of the opening balance sheet
Restated Carrying Amount, Equity			18,696
Remeasurement, AASB 9 changes, Equity		(495)
Opening Carrying Amount, Equity		18,194
Parent Entity | Collateral received
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			1,748
Opening Carrying Amount, Liabilities		1,748
Parent Entity | Deposits and other borrowings
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			500,468
Opening Carrying Amount, Liabilities		500,468
Parent Entity | Other financial liabilities
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			27,266
Opening Carrying Amount, Liabilities		27,257
Parent Entity | Derivative financial instruments
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			24,229
Opening Carrying Amount, Liabilities		24,229
Parent Entity | Debt issues
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			152,288
Opening Carrying Amount, Liabilities		152,288
Parent Entity | Due to subsidiaries
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			142,400
Remeasurement, AASB 9 changes, Liabilities		(118)
Opening Carrying Amount, Liabilities		142,282
Parent Entity | Provisions
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			1,766
Remeasurement, AASB 9 changes, Liabilities		95
Opening Carrying Amount, Liabilities		1,861
Parent Entity | Loan capital
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			17,265
Opening Carrying Amount, Liabilities		17,265
Parent Entity | All other liabilities
Reconciliation of the opening balance sheet
Restated Carrying Amount, Liabilities			444
Remeasurement, AASB 9 changes, Liabilities		(12)
Opening Carrying Amount, Liabilities		448
Parent Entity | Cash and balances with central banks
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			24,976
Opening Carrying Amount, Assets		24,976
Parent Entity | Collateral paid
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			4,722
Opening Carrying Amount, Assets		4,722
Parent Entity | Trading securities and financial assets measured at FVIS
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			21,415
Opening Carrying Amount, Assets		21,415
Parent Entity | Derivative financial instruments
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			23,562
Opening Carrying Amount, Assets		23,562
Parent Entity | Available-for-sale securities
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			56,513
Reclassifications, AASB 9 changes, Assets		(56,513)
Parent Entity | Investment securities
Reconciliation of the opening balance sheet
Reclassifications, AASB 9 changes, Assets		56,513
Opening Carrying Amount, Assets		56,513
Parent Entity | Loans (at amortised cost)
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			629,622
Reclassifications, AASB 9 changes, Assets		(56)
Remeasurement, AASB 9 changes, Assets		(786)
Opening Carrying Amount, Assets		628,780
Parent Entity | Loans (at fair value)
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			546
Reclassifications, AASB 9 changes, Assets		56
Opening Carrying Amount, Assets		602
Parent Entity | Other financial assets
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			4,666
Opening Carrying Amount, Assets		4,666
Parent Entity | Due from subsidiaries
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			140,597
Opening Carrying Amount, Assets		140,597
Parent Entity | Investment in subsidiaries
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			4,508
Opening Carrying Amount, Assets		4,508
Parent Entity | Deferred tax assets
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			1,102
Remeasurement, AASB 9 changes, Assets		258
Opening Carrying Amount, Assets		1,360
Parent Entity | All other assets
Reconciliation of the opening balance sheet
Restated Carrying Amount, Assets			$ 11,001
Opening Carrying Amount, Assets		11,001
Parent Entity | AASB 9 | ECL on amortised cost financial instruments | Provisions on loans
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Assets		751
Parent Entity | AASB 9 | ECL on amortised cost financial instruments | Provisions for credit commitments
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Assets		95
Parent Entity | AASB 9 | ECL on amortised cost financial instruments | Loss allowance on debt securities at FVOCI
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Assets		2
Parent Entity | AASB 9 | ECL on debt securities measured at FVOCI | Loss allowance on debt securities at FVOCI
Reconciliation of the opening balance sheet
Remeasurement, AASB 9 changes, Assets		118
Parent Entity | AASB 15
Reconciliation of the opening balance sheet
AASB 15 changes, Liabilities		7
AASB 15 changes, Net Assets		(7)
AASB 15 changes, Equity		(7)
Parent Entity | AASB 15 | Total equity attributable to owners of Westpac Banking Corporation
Reconciliation of the opening balance sheet
AASB 15 changes, Equity		(7)
Parent Entity | AASB 15 | Retained profits
Reconciliation of the opening balance sheet
AASB 15 changes, Equity		(7)
Parent Entity | AASB 15 | Other financial liabilities
Reconciliation of the opening balance sheet
AASB 15 changes, Liabilities		(9)
Parent Entity | AASB 15 | All other liabilities
Reconciliation of the opening balance sheet
AASB 15 changes, Liabilities		$ 16

Segment reporting - Segment res

Segment reporting - Segment results (Details) $ in Millions, $ in Millions		12 Months Ended
		Sep. 30, 2019AUD ($)	Sep. 30, 2018AUD ($)	Sep. 30, 2017AUD ($)	Sep. 30, 2019USD ($)
Segment reporting
Maximum facilities for SME and Commercial business customers					$ 150
Segment results
Net interest income	[1]	$ 16,907	$ 16,505	$ 15,516
Net fee income	[1]	1,655	2,424	2,603
Net wealth management and insurance income	[1]	1,029	2,061	1,800
Trading income	[1]	929	945	1,202
Other income		129	72	529
Net operating income before operating expenses and impairment charges	[1]	20,649	22,007	21,650
Operating expenses	[1]	(10,106)	(9,566)	(9,282)
Impairment (charges)/benefits	[1]	(794)	(710)	(853)
Profit before income tax	[1]	9,749	11,731	11,515
Income tax expense	[1]	(2,959)	(3,632)	(3,518)
Net profit attributable to non-controlling interests	[1]	(6)	(4)	(7)
Net profit attributable to owners of Westpac Banking Corporation	[1]	6,784	8,095	7,990
Consumer
Segment results
Net profit attributable to owners of Westpac Banking Corporation		3,288	3,408	3,336
Business
Segment results
Net profit attributable to owners of Westpac Banking Corporation		2,386	2,680	2,704
Westpac Institutional Bank
Segment results
Net profit attributable to owners of Westpac Banking Corporation		1,014	1,093	1,163
Westpac New Zealand
Segment results
Net profit attributable to owners of Westpac Banking Corporation		984	947	903
Group Businesses
Segment results
Net profit attributable to owners of Westpac Banking Corporation		(888)	(33)	(116)
Operating segments (cash earnings)
Segment results
Net interest income		16,953	17,187	16,455
Net fee income		1,655	1,910	2,170
Net wealth management and insurance income		1,023	2,017	1,810
Trading income		907	926	1,218
Other income		117	125	77
Net operating income before operating expenses and impairment charges		20,655	22,165	21,730
Operating expenses		(10,031)	(9,698)	(9,178)
Impairment (charges)/benefits		(794)	(812)	(954)
Profit before income tax		9,830	11,655	11,598
Income tax expense		(2,975)	(3,586)	(3,529)
Net profit attributable to non-controlling interests		(6)	(4)	(7)
Net profit attributable to owners of Westpac Banking Corporation		6,849	8,065	8,062
Operating segments (cash earnings) | Consumer
Segment results
Net interest income		7,942	7,850	7,733
Net fee income		608	659	745
Net wealth management and insurance income		425	549	488
Trading income		93	96	100
Other income		15	7	18
Net operating income before operating expenses and impairment charges		9,083	9,161	9,084
Operating expenses		(3,817)	(3,774)	(3,548)
Impairment (charges)/benefits		(581)	(486)	(600)
Profit before income tax		4,685	4,901	4,936
Income tax expense		(1,397)	(1,478)	(1,484)
Net profit attributable to owners of Westpac Banking Corporation		3,288	3,423	3,452
Operating segments (cash earnings) | Business
Segment results
Net interest income		5,092	5,284	4,950
Net fee income		464	511	518
Net wealth management and insurance income		899	1,012	951
Trading income		106	100	100
Other income		(5)	17	48
Net operating income before operating expenses and impairment charges		6,556	6,924	6,567
Operating expenses		(2,805)	(2,651)	(2,548)
Impairment (charges)/benefits		(272)	(321)	(369)
Profit before income tax		3,479	3,952	3,650
Income tax expense		(1,048)	(1,196)	(1,096)
Net profit attributable to owners of Westpac Banking Corporation		2,431	2,756	2,554
Operating segments (cash earnings) | Westpac Institutional Bank
Segment results
Net interest income		1,443	1,442	1,354
Net fee income		610	610	628
Net wealth management and insurance income			212	93
Trading income		695	697	967
Other income		(13)	46	28
Net operating income before operating expenses and impairment charges		2,735	3,007	3,070
Operating expenses		(1,284)	(1,449)	(1,358)
Impairment (charges)/benefits		(46)	16	(79)
Profit before income tax		1,405	1,574	1,633
Income tax expense		(386)	(476)	(463)
Net profit attributable to non-controlling interests		(5)	(5)	(7)
Net profit attributable to owners of Westpac Banking Corporation		1,014	1,093	1,163
Operating segments (cash earnings) | Westpac New Zealand
Segment results
Net interest income		1,860	1,799	1,706
Net fee income		163	164	197
Net wealth management and insurance income		177	149	148
Trading income		37	51	51
Other income		46	9	14
Net operating income before operating expenses and impairment charges		2,283	2,172	2,116
Operating expenses		(939)	(855)	(890)
Impairment (charges)/benefits		10	(22)	51
Profit before income tax		1,354	1,295	1,277
Income tax expense		(369)	(361)	(360)
Net profit attributable to owners of Westpac Banking Corporation		985	934	917
Operating segments (cash earnings) | Group Businesses
Segment results
Net interest income		616	812	712
Net fee income		(190)	(34)	82
Net wealth management and insurance income		(478)	95	130
Trading income		(24)	(18)
Other income		74	46	(31)
Net operating income before operating expenses and impairment charges		(2)	901	893
Operating expenses		(1,186)	(969)	(834)
Impairment (charges)/benefits		95	1	43
Profit before income tax		(1,093)	(67)	102
Income tax expense		225	(75)	(126)
Net profit attributable to non-controlling interests		(1)	1
Net profit attributable to owners of Westpac Banking Corporation		(869)	(141)	(24)
Net cash earnings adjustment
Segment results
Net interest income		(46)	(682)	(939)
Net fee income			514	433
Net wealth management and insurance income		6	44	(10)
Trading income		22	19	(16)
Other income		12	(53)	452
Net operating income before operating expenses and impairment charges		(6)	(158)	(80)
Operating expenses		(75)	132	(104)
Impairment (charges)/benefits			102	101
Profit before income tax		(81)	76	(83)
Income tax expense		16	(46)	11
Net profit attributable to owners of Westpac Banking Corporation		(65)	30	(72)
Net cash earnings adjustment | Consumer
Segment results
Net profit attributable to owners of Westpac Banking Corporation			(15)	(116)
Net cash earnings adjustment | Business
Segment results
Net profit attributable to owners of Westpac Banking Corporation		(45)	(76)	150
Net cash earnings adjustment | Westpac New Zealand
Segment results
Net profit attributable to owners of Westpac Banking Corporation		(1)	13	(14)
Net cash earnings adjustment | Group Businesses
Segment results
Net profit attributable to owners of Westpac Banking Corporation		$ (19)	$ 108	$ (92)
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Segment reporting - Reconciliat

Segment reporting - Reconciliation of cash earnings to net profit (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Segment reporting
Net profit attributable to owners of Westpac Banking Corporation	[1]	$ 6,784	$ 8,095	$ 7,990
Operating segments (cash earnings)
Segment reporting
Net profit attributable to owners of Westpac Banking Corporation		6,849	8,065	8,062
Net cash earnings adjustment
Segment reporting
Net profit attributable to owners of Westpac Banking Corporation		(65)	30	(72)
Amortisation of intangible assets
Segment reporting
Net profit attributable to owners of Westpac Banking Corporation			(17)	(137)
Fair value gain/(loss) on economic hedges
Segment reporting
Net profit attributable to owners of Westpac Banking Corporation		(35)	126	(69)
Ineffective hedges
Segment reporting
Net profit attributable to owners of Westpac Banking Corporation		20	(13)	(16)
Adjustments relating to Pendal
Segment reporting
Net profit attributable to owners of Westpac Banking Corporation		(45)	(73)	171
Treasury shares
Segment reporting
Net profit attributable to owners of Westpac Banking Corporation		$ (5)	$ 7	$ (21)
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Segment reporting - Geographic

Segment reporting - Geographic segments (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Geographic segments
Revenue	$ 36,964	$ 38,073	$ 37,366
Revenues (as a percent)	100.00%	100.00%	100.00%
Non-current assets	$ 13,108	$ 13,092	$ 13,139
Non-current assets (as a percent)	100.00%	100.00%	100.00%
Australia
Geographic segments
Revenue	$ 31,113	$ 32,595	$ 32,210
Revenues (as a percent)	84.20%	85.60%	86.20%
Non-current assets	$ 12,280	$ 12,271	$ 12,326
Non-current assets (as a percent)	93.70%	93.70%	93.80%
New Zealand
Geographic segments
Revenue	$ 4,520	$ 4,381	$ 4,326
Revenues (as a percent)	12.20%	11.50%	11.60%
Non-current assets	$ 761	$ 756	$ 745
Non-current assets (as a percent)	5.80%	5.80%	5.70%
Other
Geographic segments
Revenue	$ 1,331	$ 1,097	$ 830
Revenues (as a percent)	3.60%	2.90%	2.20%
Non-current assets	$ 67	$ 65	$ 68
Non-current assets (as a percent)	0.50%	0.50%	0.50%

Net interest income (Details)

Net interest income (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Interest income
Cash and balances with central banks			$ 326	$ 242
Collateral paid			129	96
Available-for-sale securities			1,914	1,795
Net ineffectiveness on qualifying hedges			(18)	(22)
Trading securities and financial assets measured at FVIS			564	574
Loans			29,621	28,504
Other financial assets			35	43
Total interest income	[1]	$ 33,222	32,571	31,232
Interest expense
Collateral received			(45)	(19)
Deposits and other borrowings			(9,021)	(8,868)
Trading liabilities			(959)	(2,065)
Debt issues			(4,480)	(3,585)
Loan capital			(774)	(693)
Other financial liabilities			(409)	(391)
Bank levy			(378)	(95)
Total interest expense	[1]	(16,315)	(16,066)	(15,716)
Net interest income	[1]	16,907	16,505	15,516
Customer refunds recognised in interest income		372	127	58
Calculated using the effective interest rate method
Interest income
Cash and balances with central banks		334	326	242
Collateral paid		201	129	96
Available-for-sale securities			1,914	1,795
Investment securities		1,919
Loans		30,029	29,583	28,438
Other financial assets		35	35	43
Total interest income		32,518	31,987	30,614
Interest expense
Collateral received		(57)	(45)	(19)
Deposits and other borrowings		(7,967)	(8,141)	(8,026)
Debt issues		(4,706)	(4,325)	(3,448)
Loan capital		(776)	(774)	(693)
Other financial liabilities		(274)	(318)	(307)
Total interest expense		(13,780)	(13,603)	(12,493)
Other
Interest income
Net ineffectiveness on qualifying hedges		28	(18)	(22)
Trading securities and financial assets measured at FVIS		662	564	574
Loans		14	38	66
Total interest income		704	584	618
Interest expense
Deposits and other borrowings		(978)	(880)	(842)
Trading liabilities		(915)	(959)	(2,065)
Debt issues		(163)	(155)	(137)
Bank levy		(391)	(378)	(95)
Other interest expense		(88)	(91)	(84)
Total interest expense		(2,535)	(2,463)	$ (3,223)
Parent Entity
Interest income
Cash and balances with central banks			301
Collateral paid			126
Available-for-sale securities			1,743
Net ineffectiveness on qualifying hedges			(22)
Trading securities and financial assets measured at FVIS			521
Loans			25,801
Other financial assets			32
Due from subsidiaries			4,328
Total interest income	[1]	33,512	32,830
Interest expense
Collateral received			(41)
Deposits and other borrowings			(7,817)
Trading liabilities			(754)
Debt issues			(3,958)
Due to subsidiaries			(4,851)
Loan capital			(774)
Other financial liabilities			(404)
Bank levy			(378)
Total interest expense	[1]	(19,295)	(18,977)
Net interest income	[1]	14,217	13,853
Customer refunds recognised in interest income		353	125
Parent Entity | Calculated using the effective interest rate method
Interest income
Cash and balances with central banks		311	301
Collateral paid		197	126
Available-for-sale securities			1,743
Investment securities		1,750
Loans		26,171	25,763
Other financial assets		33	32
Due from subsidiaries		4,274	4,225
Total interest income		32,736	32,190
Interest expense
Collateral received		(51)	(41)
Deposits and other borrowings		(6,745)	(6,949)
Debt issues		(4,218)	(3,820)
Due to subsidiaries		(4,905)	(4,840)
Loan capital		(776)	(774)
Other financial liabilities		(273)	(316)
Total interest expense		(16,968)	(16,740)
Parent Entity | Other
Interest income
Net ineffectiveness on qualifying hedges		26	(22)
Trading securities and financial assets measured at FVIS		633	521
Loans		14	38
Due from subsidiaries		103	103
Total interest income		776	640
Interest expense
Deposits and other borrowings		(961)	(868)
Trading liabilities		(828)	(754)
Debt issues		(140)	(138)
Due to subsidiaries		78	(11)
Bank levy		(391)	(378)
Other interest expense		(85)	(88)
Total interest expense		$ (2,327)	$ (2,237)
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Non-interest income (Details)

Non-interest income (Details) - AUD ($) shares in Millions, $ in Millions		May 26, 2017	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Net fee income
Facility fees			$ 730	$ 1,365	$ 1,350
Transaction fees			1,225	1,182	1,258
Other non-risk fee income			(76)	98	229
Fee income			1,879	2,645	2,837
Credit card loyalty programs			(121)	(126)	(152)
Transaction fee related expenses			(103)	(95)	(82)
Fee expenses			(224)	(221)	(234)
Net fee income	[1]		1,655	2,424	2,603
Net wealth management and insurance income
Wealth management income			276	1,145	997
Life insurance premium income			1,443	1,410	1,204
General insurance and LMI net premium earned			482	472	451
Life insurance investment and other income			409	666	544
General insurance and LMI investment and other income			52	50	77
Total insurance premium, investment and other income			2,386	2,598	2,276
Life insurance claims and changes in insurance liabilities			(1,266)	(1,396)	(1,155)
General insurance and LMI claims and other expenses			(367)	(286)	(318)
Total insurance claims, changes in liabilities and other expenses			(1,633)	(1,682)	(1,473)
Net wealth management and insurance income	[1]		1,029	2,061	1,800
Trading income	[1]		929	945	1,202
Other income
Dividends received from other entities			6	3	2
Net gain on sale of associates			38		279
Net gain on disposal of assets			61	24	6
Net gain/(loss) on derivatives held for risk management purposes			(11)	8	52
Net gain/(loss) on financial instruments measured at fair value			(39)	38	11
Net gain/(loss) on disposal of controlled entities			3	(9)
Rental income on operating leases			72	107	143
Share of associates' net profit/(loss)			(23)	(10)	17
Other			22	(89)	19
Total other income			129	72	529
Total non-interest income			3,742	5,502	6,134
Compliance, regulation and remediation provisions			860	171	$ 111
Credit card loyalty programs
Other income
Deferred income			322	318
Pendal Group Limited
Other income
Sale of shares in associate by the Group (in shares)		60
Sale of shares in associate by the Group (as a percent)		19.00%
Impairment on the remaining shareholdings of Pendal				104
Parent Entity
Net fee income
Facility fees			680	1,351
Transaction fees			1,046	939
Other non-risk fee income			(638)	54
Fee income			1,088	2,344
Credit card loyalty programs			(90)	(101)
Transaction fee related expenses			(76)	(71)
Fee expenses			(166)	(172)
Net fee income	[1]		922	2,172
Net wealth management and insurance income
Trading income	[1]		956	919
Other income
Dividends received from subsidiaries			2,215	2,013
Transactions with subsidiaries			457	472
Dividends received from other entities			3	3
Net gain on disposal of assets			60
Net gain/(loss) on hedging overseas operations			(71)	19
Net gain/(loss) on derivatives held for risk management purposes			(11)	8
Net gain/(loss) on financial instruments measured at fair value			(25)	36
Rental income on operating leases			50	77
Other			6	5
Total other income			2,684	2,633
Total non-interest income			4,562	5,724
Compliance, regulation and remediation provisions			842	154
Parent Entity | Credit card loyalty programs
Other income
Deferred income			$ 47	$ 34
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Operating expenses (Details)

Operating expenses (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Staff expenses
Employee remuneration, entitlements and on-costs		$ 4,320	$ 4,292	$ 4,133
Superannuation expense		378	386	380
Share-based payments		108	95	113
Restructuring costs		232	114	75
Total staff expenses		5,038	4,887	4,701
Occupancy expenses
Operating lease rentals		658	632	648
Depreciation of property and equipment		222	245	291
Other		143	156	134
Total occupancy expenses		1,023	1,033	1,073
Technology expenses
Amortisation and impairment of software assets		719	620	628
Depreciation and impairment of IT equipment		129	141	158
Technology services		810	721	639
Software maintenance and licences		371	342	313
Telecommunications		207	209	190
Data processing		83	77	80
Total technology expenses		2,319	2,110	2,008
Other expenses
Professional and processing services		1,060	824	755
Amortisation and impairment of intangible assets and deferred expenditure		9	138	192
Postage and stationery		179	182	217
Advertising		245	173	155
Non-lending losses		58	133	73
Other		175	86	108
Total other expenses		1,726	1,536	1,500
Total operating expenses	[1]	10,106	9,566	9,282
Expenses relating to compliance, regulation and remediation provisions		196	111	$ 12
Parent Entity
Staff expenses
Employee remuneration, entitlements and on-costs		3,611	3,537
Superannuation expense		313	315
Share-based payments		101	97
Restructuring costs		202	97
Total staff expenses		4,227	4,046
Occupancy expenses
Operating lease rentals		597	565
Depreciation of property and equipment		176	196
Other		122	134
Total occupancy expenses		895	895
Technology expenses
Amortisation and impairment of software assets		653	567
Depreciation and impairment of IT equipment		117	124
Technology services		670	564
Software maintenance and licences		321	289
Telecommunications		182	183
Data processing		81	76
Total technology expenses		2,024	1,803
Other expenses
Professional and processing services		860	638
Amortisation and impairment of intangible assets and deferred expenditure			21
Postage and stationery		143	152
Advertising		196	127
Non-lending losses		43	112
Impairment/(reversal of impairment) on investments in subsidiaries		136	44
Other		107	162
Total other expenses		1,485	1,256
Total operating expenses	[1]	8,631	8,000
Expenses relating to compliance, regulation and remediation provisions		$ 180	$ 108
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Impairment charges - Reconcilia

Impairment charges - Reconciliation of impairment charges (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Impairment charges
Write-backs			$ (150)	$ (288)
Recoveries		$ (172)	(179)	(168)	$ (137)	$ (131)
Impairment charges	[1]	794	710	853
Individually assessed
Impairment charges
Provisions raised			371	610
Collectively assessed
Impairment charges
Provisions raised			668	699
Performing
Impairment charges
Provisions raised		(209)
Non-performing
Impairment charges
Provisions raised		1,175
Credit commitments
Impairment charges
Impairment charges		794
Debt securities | FVOCI
Impairment charges
Impairment charges			0	0
Debt securities | Amortised cost
Impairment charges
Impairment charges			0	0
Due from subsidiaries
Impairment charges
Impairment charges			0	$ 0
Parent Entity
Impairment charges
Write-backs			(131)
Recoveries		(143)	(138)
Impairment charges	[1]	750	682
Parent Entity | Individually assessed
Impairment charges
Provisions raised			341
Parent Entity | Collectively assessed
Impairment charges
Provisions raised			$ 610
Parent Entity | Performing
Impairment charges
Provisions raised		(180)
Parent Entity | Non-performing
Impairment charges
Provisions raised		1,073
Parent Entity | Credit commitments
Impairment charges
Impairment charges		$ 750
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Income tax - Expense (Details)

Income tax - Expense (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Income tax expense reconciled to profit before income tax
Profit before taxes		$ 9,749	$ 11,731	$ 11,515
Tax at the Australian company tax rate of 30%		$ 2,925	3,519	3,455
Australian company tax rate (as a percent)		30.00%
The effect of amounts which are not deductible (assessable) in calculating taxable income
Hybrid capital distributions		$ 72	69	64
Life insurance: Tax adjustment on policyholder earnings		8	24	8
Life insurance: Adjustment for life business tax rates		(1)	(1)	(1)
Dividend adjustments		(1)	(1)	(3)
Other non-assessable items		(14)	(5)	(3)
Other non-deductible items		12	64	32
Adjustment for overseas tax rates		(32)	(28)	(30)
Income tax (over)/under provided in prior years		(10)	9	4
Other items			(18)	(8)
Total income tax expense	[1]	2,959	3,632	3,518
Current income tax		3,370	3,704	3,404
Movement in deferred tax		$ (401)	$ (81)	$ 110
Effective income tax rate (as a percent)		30.35%	30.96%	30.55%
Australia
The effect of amounts which are not deductible (assessable) in calculating taxable income
Total income tax expense		$ 2,526	$ 3,178	$ 3,072
Overseas
The effect of amounts which are not deductible (assessable) in calculating taxable income
Total income tax expense		433	454	$ 446
Parent Entity
Income tax expense reconciled to profit before income tax
Profit before taxes		9,398	10,895
Tax at the Australian company tax rate of 30%		2,819	3,269
The effect of amounts which are not deductible (assessable) in calculating taxable income
Hybrid capital distributions		72	69
Dividend adjustments		(664)	(604)
Other non-assessable items		(2)	(2)
Other non-deductible items		9	34
Adjustment for overseas tax rates		(5)	(3)
Income tax (over)/under provided in prior years		3
Other items		45	(12)
Total income tax expense	[1]	2,277	2,751
Current income tax		2,711	2,806
Movement in deferred tax		(437)	(55)
Parent Entity | Australia
The effect of amounts which are not deductible (assessable) in calculating taxable income
Total income tax expense		2,215	2,677
Parent Entity | Overseas
The effect of amounts which are not deductible (assessable) in calculating taxable income
Total income tax expense		$ 62	$ 74
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Income tax - Deferred tax asset

Income tax - Deferred tax assets (Details) - AUD ($) $ in Millions	Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2017
Deferred tax assets
Gross deferred tax assets recognised in the income statements	$ 2,264		$ 1,792
Gross deferred tax assets recognised directly in other comprehensive income	167		50
Deferred tax assets	2,731		1,842
Set-off of deferred tax assets and deferred tax liabilities	(683)		(662)
Net deferred tax assets	2,048	[1]	1,180	[1]	$ 1,112
Provisions for impairment charges on loans
Deferred tax assets
Gross deferred tax assets recognised in the income statements			827
Provisions for expected credit losses on loans
Deferred tax assets
Gross deferred tax assets recognised in the income statements	802
Provision for long service leave, annual leave and other employee benefits
Deferred tax assets
Gross deferred tax assets recognised in the income statements	309		323
Expected credit losses on investment securities
Deferred tax assets
Gross deferred tax assets recognised in opening retained profits	1
Financial instruments
Deferred tax assets
Gross deferred tax assets recognised in the income statements	2		5
Property and equipment
Deferred tax assets
Gross deferred tax assets recognised in the income statements	195		196
Other provisions
Deferred tax assets
Gross deferred tax assets recognised in the income statements	590		225
All other liabilities
Deferred tax assets
Gross deferred tax assets recognised in the income statements	366		216
Investment securities
Deferred tax assets
Gross deferred tax assets recognised directly in other comprehensive income	10
Cashflow hedges
Deferred tax assets
Gross deferred tax assets recognised directly in other comprehensive income	52		50
Defined benefit
Deferred tax assets
Gross deferred tax assets recognised directly in other comprehensive income	105
AASB 9
Deferred tax assets
Gross deferred tax assets recognised in opening retained profits	300
AASB 9 | Provisions for expected credit losses on loans
Deferred tax assets
Gross deferred tax assets recognised in opening retained profits	266
AASB 9 | Provisions for credit commitments
Deferred tax assets
Gross deferred tax assets recognised in opening retained profits	30
AASB 9 | Financial instruments
Deferred tax assets
Gross deferred tax assets recognised in opening retained profits	3
Parent Entity
Deferred tax assets
Gross deferred tax assets recognised in the income statements	2,075		1,599
Gross deferred tax assets recognised directly in other comprehensive income	140		31
Deferred tax assets	2,473		1,630
Set-off of deferred tax assets and deferred tax liabilities	(548)		(528)
Net deferred tax assets	1,925	[1]	1,102	[1]	$ 1,053
Parent Entity | Provisions for impairment charges on loans
Deferred tax assets
Gross deferred tax assets recognised in the income statements			708
Parent Entity | Provisions for expected credit losses on loans
Deferred tax assets
Gross deferred tax assets recognised in the income statements	695
Parent Entity | Provision for long service leave, annual leave and other employee benefits
Deferred tax assets
Gross deferred tax assets recognised in the income statements	286		301
Parent Entity | Expected credit losses on investment securities
Deferred tax assets
Gross deferred tax assets recognised in opening retained profits	1
Parent Entity | Financial instruments
Deferred tax assets
Gross deferred tax assets recognised in the income statements	2		2
Parent Entity | Property and equipment
Deferred tax assets
Gross deferred tax assets recognised in the income statements	173		177
Parent Entity | Other provisions
Deferred tax assets
Gross deferred tax assets recognised in the income statements	561		207
Parent Entity | All other liabilities
Deferred tax assets
Gross deferred tax assets recognised in the income statements	358		204
Parent Entity | Investment securities
Deferred tax assets
Gross deferred tax assets recognised directly in other comprehensive income	11
Parent Entity | Cashflow hedges
Deferred tax assets
Gross deferred tax assets recognised directly in other comprehensive income	28		$ 31
Parent Entity | Defined benefit
Deferred tax assets
Gross deferred tax assets recognised directly in other comprehensive income	101
Parent Entity | AASB 9
Deferred tax assets
Gross deferred tax assets recognised in opening retained profits	258
Parent Entity | AASB 9 | Provisions for expected credit losses on loans
Deferred tax assets
Gross deferred tax assets recognised in opening retained profits	227
Parent Entity | AASB 9 | Provisions for credit commitments
Deferred tax assets
Gross deferred tax assets recognised in opening retained profits	$ 30
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Income tax - Movements in defer

Income tax - Movements in deferred tax assets (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019		Sep. 30, 2018
Movements
Opening balance		$ 1,180	[1]	$ 1,112
Impact on adoption of new accounting standards		300
Restated opening balance		1,480		1,112
Recognised in the income statements		472		84
Recognised in other comprehensive income		117		(16)
Set-off of deferred tax assets and deferred tax liabilities		(21)
Closing balance	[1]	2,048		1,180
Parent Entity
Movements
Opening balance		1,102	[1]	1,053
Impact on adoption of new accounting standards		258
Restated opening balance		1,360		1,053
Recognised in the income statements		476		100
Recognised in other comprehensive income		109		(13)
Set-off of deferred tax assets and deferred tax liabilities		(20)		(38)
Closing balance	[1]	$ 1,925		$ 1,102
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Income tax - Deferred tax liabi

Income tax - Deferred tax liabilities (Details) - AUD ($) $ in Millions		Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2017
Deferred tax liabilities
Gross deferred tax liabilities recognised in the income statements		$ 727		$ 656
Gross deferred tax liabilities recognised directly in other comprehensive income				24
Deferred tax liabilities		727		680
Set-off of deferred tax assets and deferred tax liabilities		(683)		(662)
Net deferred tax liabilities		44	[1]	18	[1]	$ 10
Finance lease transactions
Deferred tax liabilities
Gross deferred tax liabilities recognised in the income statements		230		158
Property and equipment
Deferred tax liabilities
Gross deferred tax liabilities recognised in the income statements		128		135
Life insurance assets
Deferred tax liabilities
Gross deferred tax liabilities recognised in the income statements		57		51
All other assets
Deferred tax liabilities
Gross deferred tax liabilities recognised in the income statements		312		312
Available-for-sale securities
Deferred tax liabilities
Gross deferred tax liabilities recognised directly in other comprehensive income				10
Defined benefit
Deferred tax liabilities
Gross deferred tax liabilities recognised directly in other comprehensive income				14
Parent Entity
Deferred tax liabilities
Gross deferred tax liabilities recognised in the income statements		548		509
Gross deferred tax liabilities recognised directly in other comprehensive income				22
Deferred tax liabilities		548		531
Set-off of deferred tax assets and deferred tax liabilities		(548)		(528)
Net deferred tax liabilities	[1]			3
Parent Entity | Finance lease transactions
Deferred tax liabilities
Gross deferred tax liabilities recognised in the income statements		206		161
Parent Entity | Property and equipment
Deferred tax liabilities
Gross deferred tax liabilities recognised in the income statements		129		135
Parent Entity | All other assets
Deferred tax liabilities
Gross deferred tax liabilities recognised in the income statements		$ 213		213
Parent Entity | Available-for-sale securities
Deferred tax liabilities
Gross deferred tax liabilities recognised directly in other comprehensive income				7
Parent Entity | Defined benefit
Deferred tax liabilities
Gross deferred tax liabilities recognised directly in other comprehensive income				$ 15
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Income tax - Movements in def_2

Income tax - Movements in deferred tax liabilities (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019		Sep. 30, 2018
Movements
Opening balance		$ 18	[1]	$ 10
Recognised in the income statements		71		3
Recognised in other comprehensive income		(24)		5
Set-off of deferred tax assets and deferred tax liabilities		(21)
Closing balance	[1]	44		18
Parent Entity
Movements
Opening balance	[1]	3
Recognised in the income statements		39		45
Recognised in other comprehensive income		(22)		(4)
Set-off of deferred tax assets and deferred tax liabilities		(20)		(38)
Closing balance	[1]			$ 3
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Income tax - Unrecognised defer

Income tax - Unrecognised deferred tax balances (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Income tax
Australian company tax rate (as a percent)	30.00%
Unrecognised deferred tax balances
Unrecognised deferred tax asset: Tax losses on revenue account	$ 291	$ 190
Unrecognised deferred tax liability: Gross retained earnings of subsidiaries which the Parent Entity does not intend to distribute in the foreseeable future	51	58
Parent Entity
Unrecognised deferred tax balances
Unrecognised deferred tax asset: Tax losses on revenue account	$ 237	$ 151

Earnings per share (Details)

Earnings per share (Details) - AUD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Earnings per share
Net profit attributable to shareholders	[1]	$ 6,784	$ 8,095	$ 7,990
Adjustment for Restricted Share Plan (RSP) dividends - Basic		(6)	(5)	(6)
Adjustment for Restricted Share Plan (RSP) dividends - Diluted		(6)
Adjustment for potential dilution: Distributions to convertible loan capital holders		290	283	253
Adjusted net profit attributable to shareholders - Basic		6,778	8,090	7,984
Adjusted net profit attributable to shareholders - Diluted		$ 7,068	$ 8,378	$ 8,243
Weighted average number of ordinary shares on issue		3,456	3,414	3,364
Treasury shares (including RSP share rights)		(6)	(8)	(9)
Adjustment for potential dilution: Share-based payments		1	3	4
Adjustment for potential dilution: Convertible loan capital		278	232	236
Adjusted weighted average number of ordinary shares - Basic		3,450	3,406	3,355
Adjusted weighted average number of ordinary shares - Diluted		3,729	3,641	3,595
Earnings per ordinary share - Basic (in dollars per share)	[1]	$ 1.965	$ 2.375	$ 2.380
Earnings per ordinary share - Diluted (in dollars per share)	[1]	$ 1.895	$ 2.301	$ 2.293
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Average balance sheet and int_3

Average balance sheet and interest rates (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 798,924	$ 774,944	$ 752,294
Interest Income	[1]	$ 33,222	$ 32,571	$ 31,232
Average Rate - Interest earning assets (as a percent)		4.20%	4.20%	4.20%
Average Balance - Non-Interest earning assets		$ 95,800	$ 98,366	$ 101,764
Average Balance - Total assets		894,724	873,310	854,058
Average Balance - Interest bearing liabilities		734,282	715,509	694,924
Interest Expense	[1]	$ 16,315	$ 16,066	$ 15,716
Average Rate - Interest bearing liabilities (as a percent)		2.20%	2.20%	2.30%
Average Balance - Non-interest bearing liabilities		$ 96,678	$ 95,753	$ 100,558
Average Balance - Total liabilities		830,960	811,262	795,482
Average Balance - Shareholders' equity		63,714	62,017	58,556
Average Balance - Non-controlling interests		50	31	20
Average Balance - Total equity		63,764	62,048	58,576
Average Balance - Total liabilities and equity		894,724	873,310	854,058
Reported
Average balance sheet and interest rates
Interest Income			32,571	31,232
Interest Expense			16,066	15,716
Collateral received | Australia
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		2,039	2,383	1,641
Interest Expense		$ 41	$ 37	$ 15
Average Rate - Interest bearing liabilities (as a percent)		2.00%	1.60%	0.90%
Collateral received | New Zealand
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		$ 390	$ 342	$ 98
Interest Expense		$ 8	$ 6	$ 2
Average Rate - Interest bearing liabilities (as a percent)		2.10%	1.80%	2.00%
Collateral received | Other overseas
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		$ 1,188	$ 184	$ 242
Interest Expense		$ 8	$ 2	$ 2
Average Rate - Interest bearing liabilities (as a percent)		0.70%	1.10%	0.80%
Deposits and other borrowings | Australia
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		$ 425,799	$ 422,006	$ 409,586
Interest Expense		$ 7,023	$ 7,308	$ 7,344
Average Rate - Interest bearing liabilities (as a percent)		1.60%	1.70%	1.80%
Average Balance - Non-interest bearing liabilities		$ 42,455	$ 41,156	$ 39,355
Deposits and other borrowings | New Zealand
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		54,720	51,368	51,042
Interest Expense		$ 1,235	$ 1,196	$ 1,173
Average Rate - Interest bearing liabilities (as a percent)		2.30%	2.30%	2.30%
Average Balance - Non-interest bearing liabilities		$ 5,996	$ 5,204	$ 4,660
Deposits and other borrowings | Other overseas
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		26,270	26,599	24,085
Interest Expense		$ 687	$ 517	$ 351
Average Rate - Interest bearing liabilities (as a percent)		2.60%	1.90%	1.50%
Average Balance - Non-interest bearing liabilities		$ 819	$ 817	$ 867
Loan capital | Australia
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		15,080	15,028	15,841
Interest Expense		$ 632	$ 635	$ 638
Average Rate - Interest bearing liabilities (as a percent)		4.20%	4.20%	4.00%
Loan capital | New Zealand
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		$ 1,777	$ 1,645	$ 43
Interest Expense		$ 91	$ 84	$ 2
Average Rate - Interest bearing liabilities (as a percent)		5.10%	5.10%	4.70%
Loan capital | Other overseas
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		$ 1,324	$ 1,324	$ 1,324
Interest Expense		$ 53	$ 55	$ 53
Average Rate - Interest bearing liabilities (as a percent)		4.00%	4.20%	4.00%
Other interest bearing liabilities | Australia
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		$ 188,736	$ 177,746	$ 171,940
Interest Expense		$ 5,937	$ 5,594	$ 5,343
Average Rate - Interest bearing liabilities (as a percent)		3.10%	3.10%	3.10%
Other interest bearing liabilities | New Zealand
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		$ 15,665	$ 15,011	$ 16,366
Interest Expense		$ 575	$ 591	$ 754
Average Rate - Interest bearing liabilities (as a percent)		3.70%	3.90%	4.60%
Other interest bearing liabilities | Other overseas
Average balance sheet and interest rates
Average Balance - Interest bearing liabilities		$ 1,294	$ 1,873	$ 2,716
Interest Expense		$ 25	$ 41	$ 39
Average Rate - Interest bearing liabilities (as a percent)		1.90%	2.20%	1.40%
Derivative financial instruments
Average balance sheet and interest rates
Average Balance - Non-interest bearing liabilities		$ 26,568	$ 26,218	$ 32,488
Derivative financial instruments | Reported
Average balance sheet and interest rates
Average Balance - Non-interest bearing liabilities		42,780	37,504
Life insurance liabilities
Average balance sheet and interest rates
Average Balance - Non-interest bearing liabilities		7,653	8,874	10,560
Other liabilities
Average balance sheet and interest rates
Average Balance - Non-interest bearing liabilities		13,187	13,484	12,628
Other liabilities | Reported
Average balance sheet and interest rates
Average Balance - Non-interest bearing liabilities			12,199	11,586
Collateral paid | Australia
Average balance sheet and interest rates
Average Balance - Interest earning assets		8,428	5,239	6,926
Interest Income		$ 152	$ 86	$ 65
Average Rate - Interest earning assets (as a percent)		1.80%	1.60%	0.90%
Collateral paid | New Zealand
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 364	$ 252	$ 733
Interest Income		$ 7	$ 4	$ 5
Average Rate - Interest earning assets (as a percent)		1.90%	1.60%	0.70%
Collateral paid | Other overseas
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 2,031	$ 2,594	$ 2,042
Interest Income		$ 42	$ 39	$ 26
Average Rate - Interest earning assets (as a percent)		2.10%	1.50%	1.30%
Trading securities and financial assets measured at FVIS | Australia
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 20,691	$ 17,420	$ 18,418
Interest Income		$ 468	$ 423	$ 416
Average Rate - Interest earning assets (as a percent)		2.30%	2.40%	2.30%
Trading securities and financial assets measured at FVIS | New Zealand
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 3,862	$ 3,538	$ 4,238
Interest Income		$ 85	$ 80	$ 96
Average Rate - Interest earning assets (as a percent)		2.20%	2.30%	2.30%
Trading securities and financial assets measured at FVIS | Other overseas
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 4,521	$ 3,160	$ 4,101
Interest Income		$ 109	$ 61	$ 62
Average Rate - Interest earning assets (as a percent)		2.40%	1.90%	1.50%
Available-for-sale securities | Australia
Average balance sheet and interest rates
Average Balance - Interest earning assets			$ 55,458	$ 52,457
Interest Income			$ 1,692	$ 1,573
Average Rate - Interest earning assets (as a percent)			3.10%	3.00%
Available-for-sale securities | New Zealand
Average balance sheet and interest rates
Average Balance - Interest earning assets			$ 3,304	$ 3,479
Interest Income			$ 136	$ 147
Average Rate - Interest earning assets (as a percent)			4.10%	4.20%
Available-for-sale securities | Other overseas
Average balance sheet and interest rates
Average Balance - Interest earning assets			$ 2,778	$ 2,272
Interest Income			$ 86	$ 75
Average Rate - Interest earning assets (as a percent)			3.10%	3.30%
Investment securities | Australia
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 56,875
Interest Income		$ 1,691
Average Rate - Interest earning assets (as a percent)		3.00%
Investment securities | New Zealand
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 3,850
Interest Income		$ 130
Average Rate - Interest earning assets (as a percent)		3.40%
Investment securities | Other overseas
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 3,062
Interest Income		$ 98
Average Rate - Interest earning assets (as a percent)		3.20%
Loans and other receivables | Australia
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 589,427	$ 578,679	$ 558,361
Interest Income		$ 25,931	$ 25,700	$ 24,789
Average Rate - Interest earning assets (as a percent)		4.40%	4.40%	4.40%
Loans and other receivables | New Zealand
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 79,255	$ 73,902	$ 73,055
Interest Income		$ 3,650	$ 3,516	$ 3,463
Average Rate - Interest earning assets (as a percent)		4.60%	4.80%	4.70%
Loans and other receivables | Other overseas
Average balance sheet and interest rates
Average Balance - Interest earning assets		$ 26,558	$ 28,620	$ 26,212
Interest Income		$ 859	$ 748	$ 515
Average Rate - Interest earning assets (as a percent)		3.20%	2.60%	2.00%
Derivative financial instruments
Average balance sheet and interest rates
Average Balance - Non-Interest earning assets		$ 25,959	$ 26,443	$ 28,897
Derivative financial instruments | Reported
Average balance sheet and interest rates
Average Balance - Non-Interest earning assets			34,702	37,673
Life insurance assets
Average balance sheet and interest rates
Average Balance - Non-Interest earning assets		9,610	10,664	12,447
Other
Average balance sheet and interest rates
Average Balance - Non-Interest earning assets		$ 60,231	61,259	60,420
Other | Reported
Average balance sheet and interest rates
Average Balance - Non-Interest earning assets			$ 61,938	$ 60,111
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Average balance sheet and int_4

Average balance sheet and interest rates - Variances (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Average balance sheet and interest rates
Interest income - Change Due to Volume	$ 910	$ 1,077
Interest income - Change Due to Rate	(259)	262
Total change in interest income	651	1,339
Interest expense - Change Due to Volume	513	429
Interest expense - Change Due to Rate	(264)	(79)
Total change in interest expense	249	350
Net interest income - Change Due to Volume	397	648
Net interest income - Change Due to Rate	5	341
Total change in net interest income	402	989
Australia
Average balance sheet and interest rates
Net interest income - Change Due to Volume	242	608
Net interest income - Change Due to Rate	40	216
Total change in net interest income	282	824
New Zealand
Average balance sheet and interest rates
Net interest income - Change Due to Volume	174
Net interest income - Change Due to Rate	(70)	79
Total change in net interest income	104	79
Other overseas
Average balance sheet and interest rates
Net interest income - Change Due to Volume	(19)	40
Net interest income - Change Due to Rate	35	46
Total change in net interest income	16	86
Collateral received | Australia
Average balance sheet and interest rates
Interest expense - Change Due to Volume	(5)	7
Interest expense - Change Due to Rate	9	15
Total change in interest expense	4	22
Collateral received | New Zealand
Average balance sheet and interest rates
Interest expense - Change Due to Volume	1	5
Interest expense - Change Due to Rate	1	(1)
Total change in interest expense	2	4
Collateral received | Other overseas
Average balance sheet and interest rates
Interest expense - Change Due to Volume	11
Interest expense - Change Due to Rate	(5)
Total change in interest expense	6
Deposits and other borrowings | Australia
Average balance sheet and interest rates
Interest expense - Change Due to Volume	66	223
Interest expense - Change Due to Rate	(351)	(259)
Total change in interest expense	(285)	(36)
Deposits and other borrowings | New Zealand
Average balance sheet and interest rates
Interest expense - Change Due to Volume	78	7
Interest expense - Change Due to Rate	(39)	16
Total change in interest expense	39	23
Deposits and other borrowings | Other overseas
Average balance sheet and interest rates
Interest expense - Change Due to Volume	(6)	37
Interest expense - Change Due to Rate	176	129
Total change in interest expense	170	166
Loan capital | Australia
Average balance sheet and interest rates
Interest expense - Change Due to Volume	2	(33)
Interest expense - Change Due to Rate	(5)	30
Total change in interest expense	(3)	(3)
Loan capital | New Zealand
Average balance sheet and interest rates
Interest expense - Change Due to Volume	7	75
Interest expense - Change Due to Rate		7
Total change in interest expense	7	82
Loan capital | Other overseas
Average balance sheet and interest rates
Interest expense - Change Due to Rate	(2)	2
Total change in interest expense	(2)	2
Other interest bearing liabilities | Australia
Average balance sheet and interest rates
Interest expense - Change Due to Volume	346	198
Interest expense - Change Due to Rate	(3)	53
Total change in interest expense	343	251
Other interest bearing liabilities | New Zealand
Average balance sheet and interest rates
Interest expense - Change Due to Volume	26	(74)
Interest expense - Change Due to Rate	(42)	(89)
Total change in interest expense	(16)	(163)
Other interest bearing liabilities | Other overseas
Average balance sheet and interest rates
Interest expense - Change Due to Volume	(13)	(16)
Interest expense - Change Due to Rate	(3)	18
Total change in interest expense	(16)	2
Collateral paid | Australia
Average balance sheet and interest rates
Interest income - Change Due to Volume	52	(16)
Interest income - Change Due to Rate	14	37
Total change in interest income	66	21
Collateral paid | New Zealand
Average balance sheet and interest rates
Interest income - Change Due to Volume	2	(3)
Interest income - Change Due to Rate	1	2
Total change in interest income	3	(1)
Collateral paid | Other overseas
Average balance sheet and interest rates
Interest income - Change Due to Volume	(8)	7
Interest income - Change Due to Rate	11	6
Total change in interest income	3	13
Trading securities and financial assets measured at FVIS | Australia
Average balance sheet and interest rates
Interest income - Change Due to Volume	79	(23)
Interest income - Change Due to Rate	(34)	30
Total change in interest income	45	7
Trading securities and financial assets measured at FVIS | New Zealand
Average balance sheet and interest rates
Interest income - Change Due to Volume	7	(16)
Interest income - Change Due to Rate	(2)
Total change in interest income	5	(16)
Trading securities and financial assets measured at FVIS | Other overseas
Average balance sheet and interest rates
Interest income - Change Due to Volume	26	(13)
Interest income - Change Due to Rate	22	12
Total change in interest income	48	(1)
Investment securities | Australia
Average balance sheet and interest rates
Interest income - Change Due to Volume	43	90
Interest income - Change Due to Rate	(44)	29
Total change in interest income	(1)	119
Investment securities | New Zealand
Average balance sheet and interest rates
Interest income - Change Due to Volume	22	(7)
Interest income - Change Due to Rate	(28)	(4)
Total change in interest income	(6)	(11)
Investment securities | Other overseas
Average balance sheet and interest rates
Interest income - Change Due to Volume	9	17
Interest income - Change Due to Rate	3	(6)
Total change in interest income	12	11
Loans and other receivables | Australia
Average balance sheet and interest rates
Interest income - Change Due to Volume	477	952
Interest income - Change Due to Rate	(246)	(41)
Total change in interest income	231	911
Loans and other receivables | New Zealand
Average balance sheet and interest rates
Interest income - Change Due to Volume	255	39
Interest income - Change Due to Rate	(121)	14
Total change in interest income	134	53
Loans and other receivables | Other overseas
Average balance sheet and interest rates
Interest income - Change Due to Volume	(54)	50
Interest income - Change Due to Rate	165	183
Total change in interest income	$ 111	$ 233

Trading securities and financ_3

Trading securities and financial assets measured at FVIS (Details) - AUD ($) $ in Millions		Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2017
Trading securities and financial assets measured at FVIS
Trading securities		$ 22,210		$ 18,777		$ 16,519
Securities purchased under agreement to resell		6,833		1,379		6,887
Other financial assets measured at FVIS		2,738		2,976		2,577
Total trading securities and financial assets measured at FVIS		31,781	[1]	23,132	[1]	25,983
Government and semi-government securities
Trading securities and financial assets measured at FVIS
Trading securities		16,625		13,328		11,402
Other debt securities
Trading securities and financial assets measured at FVIS
Trading securities		5,497		5,354		5,049
Other financial assets measured at FVIS		2,394		2,715		2,259
Equity securities
Trading securities and financial assets measured at FVIS
Trading securities		6		8		11
Other financial assets measured at FVIS		344		261		318
Other
Trading securities and financial assets measured at FVIS
Trading securities		82		87		$ 57
Parent Entity
Trading securities and financial assets measured at FVIS
Trading securities		20,719		17,671
Securities purchased under agreement to resell		6,731		1,379
Other financial assets measured at FVIS		2,115		2,365
Total trading securities and financial assets measured at FVIS	[1]	29,565		21,415
Parent Entity | Government and semi-government securities
Trading securities and financial assets measured at FVIS
Trading securities		15,585		12,519
Parent Entity | Other debt securities
Trading securities and financial assets measured at FVIS
Trading securities		5,046		5,057
Other financial assets measured at FVIS		2,057		2,302
Parent Entity | Equity securities
Trading securities and financial assets measured at FVIS
Trading securities		6		8
Other financial assets measured at FVIS		58		63
Parent Entity | Other
Trading securities and financial assets measured at FVIS
Trading securities		$ 82		$ 87
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Available-for-sale securities_3

Available-for-sale securities / Investment securities - Transition to AASB 9 (Details) $ in Millions	Oct. 01, 2018AUD ($)
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	$ 864,584
FVOCI | AASB 9
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	60,033
Amortised cost | AASB 9
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	746,991
FVIS | AASB 9
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	57,560
Available-for-sale securities
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	61,119
Available-for-sale securities | Amortised cost
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	811
Available-for-sale securities | FVIS
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	275
Debt securities
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	60,735
Debt securities | FVOCI
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	59,924
Debt securities | Amortised cost
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	811
Equity securities
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	384
Equity securities | FVOCI
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	109
Equity securities | FVIS
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	275
Parent Entity | AASB 9
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	900,108
Parent Entity | FVOCI | AASB 9
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	56,503
Parent Entity | Amortised cost | AASB 9
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	797,748
Parent Entity | FVIS | AASB 9
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	45,857
Parent Entity | Available-for-sale securities
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	56,513
Parent Entity | Available-for-sale securities | Amortised cost
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	10
Parent Entity | Debt securities
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	56,446
Parent Entity | Debt securities | FVOCI
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	56,436
Parent Entity | Debt securities | Amortised cost
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	10
Parent Entity | Equity securities
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	67
Parent Entity | Equity securities | FVOCI
Transition to AASB 9
Financial assets, carrying amount immediately after initial application of AASB 9	$ 67

Available-for-sale securities_4

Available-for-sale securities / Investment securities - Balances recognised under AASB 9 (Details) - AUD ($) $ in Millions		Sep. 30, 2019	Sep. 30, 2018
Available-for-sale securities / Investment securities
Investment securities	[1]	$ 73,401
FVOCI
Available-for-sale securities / Investment securities
Investment securities		72,581
Amortised cost
Available-for-sale securities / Investment securities
Investment securities		820
Amortised cost | Gross amount
Available-for-sale securities / Investment securities
Investment securities		829
Amortised cost | Provision for ECL
Available-for-sale securities / Investment securities
Investment securities		(9)
Government and semi-government securities | FVOCI
Available-for-sale securities / Investment securities
Investment securities		53,389
Government and semi-government securities | Amortised cost | Gross amount
Available-for-sale securities / Investment securities
Investment securities		736
Other debt securities | FVOCI
Available-for-sale securities / Investment securities
Investment securities		19,058
Other debt securities | Amortised cost | Gross amount
Available-for-sale securities / Investment securities
Investment securities		93
Equity securities | FVOCI
Available-for-sale securities / Investment securities
Investment securities		134
Parent Entity
Available-for-sale securities / Investment securities
Investment securities	[1]	68,398
Parent Entity | FVOCI
Available-for-sale securities / Investment securities
Investment securities		68,371
Parent Entity | Amortised cost
Available-for-sale securities / Investment securities
Investment securities		27
Parent Entity | Amortised cost | Gross amount
Available-for-sale securities / Investment securities
Investment securities		27
Parent Entity | Government and semi-government securities | FVOCI
Available-for-sale securities / Investment securities
Investment securities		50,980
Parent Entity | Government and semi-government securities | Amortised cost | Gross amount
Available-for-sale securities / Investment securities
Investment securities		23
Parent Entity | Other debt securities | FVOCI
Available-for-sale securities / Investment securities
Investment securities		17,325
Parent Entity | Other debt securities | Amortised cost | Gross amount
Available-for-sale securities / Investment securities
Investment securities		4
Parent Entity | Equity securities | FVOCI
Available-for-sale securities / Investment securities
Investment securities		$ 66
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Available-for-sale securities_5

Available-for-sale securities / Investment securities - Maturities of investment securities (Details) - AUD ($) $ in Millions		Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2017
Available-for-sale securities / Investment securities
Tax-exempt securities		$ 0
Available-for-sale securities, maturities		73,401
Available-for-sale securities			[1]	$ 61,119	[1]	$ 60,710
Within 1 Year
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		9,731
Over 1 Year to 5 Years
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		39,197
Over 5 Years to 10 Years
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		23,091
Over 10 Years
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		1,248
No Specific Maturity
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		134
Government and semi-government securities
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		$ 54,116
Weighted average yield		3.10%
Available-for-sale securities				42,979		43,382
Government and semi-government securities | Within 1 Year
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		$ 5,691
Weighted average yield		4.20%
Government and semi-government securities | Over 1 Year to 5 Years
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		$ 24,137
Weighted average yield		2.90%
Government and semi-government securities | Over 5 Years to 10 Years
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		$ 23,040
Weighted average yield		2.80%
Government and semi-government securities | Over 10 Years
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		$ 1,248
Weighted average yield		2.20%
Other debt securities
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		$ 19,151
Weighted average yield		2.70%
Available-for-sale securities				17,756		16,863
Other debt securities | Within 1 Year
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		$ 4,040
Weighted average yield		2.80%
Other debt securities | Over 1 Year to 5 Years
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		$ 15,060
Weighted average yield		2.70%
Other debt securities | Over 5 Years to 10 Years
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		$ 51
Weighted average yield		2.80%
Equity securities
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		$ 134
Available-for-sale securities				384		465
Equity securities | No Specific Maturity
Available-for-sale securities / Investment securities
Available-for-sale securities, maturities		134
US Government treasury notes
Available-for-sale securities / Investment securities
Available-for-sale securities		10,398		5,229		$ 6,796
Queensland Treasury Corporation
Available-for-sale securities / Investment securities
Debt securities with aggregate book value exceeding 10% of equity attributable to Westpac's owners		13,218
Australian Commonwealth Government
Available-for-sale securities / Investment securities
Debt securities with aggregate book value exceeding 10% of equity attributable to Westpac's owners		10,191
New South Wales Treasury Corporation
Available-for-sale securities / Investment securities
Debt securities with aggregate book value exceeding 10% of equity attributable to Westpac's owners		6,630
Parent Entity
Available-for-sale securities / Investment securities
Available-for-sale securities	[1]			56,513
Parent Entity | Government and semi-government securities
Available-for-sale securities / Investment securities
Available-for-sale securities				40,345
Parent Entity | Other debt securities
Available-for-sale securities / Investment securities
Available-for-sale securities				16,101
Parent Entity | Equity securities
Available-for-sale securities / Investment securities
Available-for-sale securities				$ 67
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Loans - Summary (Details)

Loans - Summary (Details) - AUD ($) $ in Millions		Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Financial assets
Loans		$ 714,770	[1]	$ 709,690	[1]	$ 684,919	$ 661,926	$ 623,316
Securitised loans		7,737		7,135
Gross amount
Financial assets
Loans		718,378		712,504		687,785	665,256	626,344
Provision for ECL on loans
Financial assets
Loans		3,608
Provisions for impairment charges
Financial assets
Loans				2,814		2,866	3,330	3,028
Australia | Gross amount
Financial assets
Loans		622,808		622,085		601,646	579,244	545,655
Australia | Housing | Gross amount
Financial assets
Loans		449,201		444,741
Australia | Personal | Gross amount
Financial assets
Loans		21,247		22,997
Australia | Business | Gross amount
Financial assets
Loans		152,360		154,347
New Zealand | Gross amount
Financial assets
Loans		78,725		74,342		71,806	72,495	63,729
New Zealand | Housing | Gross amount
Financial assets
Loans		47,731		44,772
New Zealand | Personal | Gross amount
Financial assets
Loans		1,709		1,869
New Zealand | Business | Gross amount
Financial assets
Loans		29,285		27,701
Other overseas | Gross amount
Financial assets
Loans		16,845		16,077		$ 14,333	$ 13,517	$ 16,960
Parent Entity
Financial assets
Loans	[1]	631,936		630,168
Securitised loans		91,061		85,965
Parent Entity | Gross amount
Financial assets
Loans		635,039		632,575
Parent Entity | Provision for ECL on loans
Financial assets
Loans		3,103
Parent Entity | Provisions for impairment charges
Financial assets
Loans				2,407
Parent Entity | Australia | Gross amount
Financial assets
Loans		618,890		617,318
Parent Entity | Australia | Housing | Gross amount
Financial assets
Loans		449,192		444,730
Parent Entity | Australia | Personal | Gross amount
Financial assets
Loans		20,848		22,008
Parent Entity | Australia | Business | Gross amount
Financial assets
Loans		148,850		150,580
Parent Entity | New Zealand | Gross amount
Financial assets
Loans		411		376
Parent Entity | New Zealand | Business | Gross amount
Financial assets
Loans		411		376
Parent Entity | Other overseas | Gross amount
Financial assets
Loans		$ 15,738		$ 14,881
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Loans - Industry classification

Loans - Industry classification (Details) - AUD ($) $ in Millions		Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Financial assets
Loans		$ 714,770	[1]	$ 709,690	[1]	$ 684,919	$ 661,926	$ 623,316
Gross amount
Financial assets
Loans		718,378		712,504		687,785	665,256	626,344
Provisions for impairment charges
Financial assets
Loans				2,814		2,866	3,330	3,028
Provision for ECL on loans
Financial assets
Loans		3,608
Provision for ECL | Provision for ECL on loans
Financial assets
Loans		3,608
Australia | Gross amount
Financial assets
Loans		622,808		622,085		601,646	579,244	545,655
Australia | Accommodation, cafes and restaurants | Gross amount
Financial assets
Loans		8,039		8,297		8,177	7,536	7,490
Australia | Agriculture, forestry and fishing | Gross amount
Financial assets
Loans		9,210		8,642		8,182	7,953	7,667
Australia | Construction | Gross amount
Financial assets
Loans		7,186		6,751		6,043	5,797	5,596
Australia | Finance and insurance | Gross amount
Financial assets
Loans		14,069		14,059		12,923	14,298	13,175
Australia | Government, administration and defence | Gross amount
Financial assets
Loans		753		628		554	675	796
Australia | Manufacturing | Gross amount
Financial assets
Loans		9,337		9,298		9,054	9,140	9,342
Australia | Mining | Gross amount
Financial assets
Loans		2,869		3,311		3,025	3,641	4,415
Australia | Property | Gross amount
Financial assets
Loans		44,769		45,471		43,220	44,785	44,667
Australia | Property services and business services | Gross amount
Financial assets
Loans		14,035		13,477		12,050	11,674	10,703
Australia | Services | Gross amount
Financial assets
Loans		12,099		12,158		12,950	12,362	10,798
Australia | Trade | Gross amount
Financial assets
Loans		16,144		16,501		16,063	16,044	15,484
Australia | Transport and storage | Gross amount
Financial assets
Loans		8,268		8,853		8,624	9,015	9,940
Australia | Utilities | Gross amount
Financial assets
Loans		4,077		4,350		5,237	4,025	3,554
Australia | Retail lending | Gross amount
Financial assets
Loans		466,550		463,609		451,315	429,522	400,441
Australia | Other | Gross amount
Financial assets
Loans		5,403		6,680		4,229	2,777	1,587
New Zealand | Gross amount
Financial assets
Loans		78,725		74,342		71,806	72,495	63,729
New Zealand | Accommodation, cafes and restaurants | Gross amount
Financial assets
Loans		355		323		290	256	182
New Zealand | Agriculture, forestry and fishing | Gross amount
Financial assets
Loans		8,553		8,138		7,772	7,788	6,860
New Zealand | Construction | Gross amount
Financial assets
Loans		493		502		447	396	359
New Zealand | Finance and insurance | Gross amount
Financial assets
Loans		3,009		2,903		2,478	2,682	1,725
New Zealand | Government, administration and defence | Gross amount
Financial assets
Loans		85		114		137	163	292
New Zealand | Manufacturing | Gross amount
Financial assets
Loans		1,913		2,199		2,090	2,324	2,110
New Zealand | Mining | Gross amount
Financial assets
Loans		278		206		141	280	407
New Zealand | Property | Gross amount
Financial assets
Loans		6,412		5,997		5,858	5,925	5,301
New Zealand | Property services and business services | Gross amount
Financial assets
Loans		1,182		1,073		1,113	1,084	925
New Zealand | Services | Gross amount
Financial assets
Loans		1,973		1,733		1,810	1,396	1,173
New Zealand | Trade | Gross amount
Financial assets
Loans		2,344		2,509		2,163	2,333	2,003
New Zealand | Transport and storage | Gross amount
Financial assets
Loans		1,131		1,029		1,080	1,257	1,094
New Zealand | Utilities | Gross amount
Financial assets
Loans		1,429		1,003		1,237	1,600	1,021
New Zealand | Retail lending | Gross amount
Financial assets
Loans		49,473		46,613		45,190	45,011	40,277
New Zealand | Other | Gross amount
Financial assets
Loans		95
Other overseas | Gross amount
Financial assets
Loans		16,845		16,077		14,333	13,517	16,960
Other overseas | Accommodation, cafes and restaurants | Gross amount
Financial assets
Loans		109		112		97	118	111
Other overseas | Agriculture, forestry and fishing | Gross amount
Financial assets
Loans		150		19		5	12	568
Other overseas | Construction | Gross amount
Financial assets
Loans		55		71		55	147	247
Other overseas | Finance and insurance | Gross amount
Financial assets
Loans		4,628		4,774		4,289	2,767	4,297
Other overseas | Government, administration and defence | Gross amount
Financial assets
Loans		2		25		4	4	130
Other overseas | Manufacturing | Gross amount
Financial assets
Loans		3,784		3,257		2,982	2,619	3,848
Other overseas | Mining | Gross amount
Financial assets
Loans		468		322		349	535	778
Other overseas | Property | Gross amount
Financial assets
Loans		492		467		491	479	409
Other overseas | Property services and business services | Gross amount
Financial assets
Loans		1,610		1,684		540	526	403
Other overseas | Services | Gross amount
Financial assets
Loans		243		205		205	99	182
Other overseas | Trade | Gross amount
Financial assets
Loans		2,293		2,312		2,680	3,463	2,898
Other overseas | Transport and storage | Gross amount
Financial assets
Loans		997		1,232		1,389	1,186	1,099
Other overseas | Utilities | Gross amount
Financial assets
Loans		1,086		736		514	442	722
Other overseas | Retail lending | Gross amount
Financial assets
Loans		863		683		657	$ 1,120	1,191
Other overseas | Other | Gross amount
Financial assets
Loans		65		178		$ 76		$ 77
Parent Entity
Financial assets
Loans	[1]	631,936		630,168
Parent Entity | Gross amount
Financial assets
Loans		635,039		632,575
Parent Entity | Provisions for impairment charges
Financial assets
Loans				2,407
Parent Entity | Provision for ECL on loans
Financial assets
Loans		3,103
Parent Entity | Provision for ECL | Provision for ECL on loans
Financial assets
Loans		3,103
Parent Entity | Australia | Gross amount
Financial assets
Loans		618,890		617,318
Parent Entity | Australia | Accommodation, cafes and restaurants | Gross amount
Financial assets
Loans		7,967		8,228
Parent Entity | Australia | Agriculture, forestry and fishing | Gross amount
Financial assets
Loans		9,151		8,584
Parent Entity | Australia | Construction | Gross amount
Financial assets
Loans		6,810		6,247
Parent Entity | Australia | Finance and insurance | Gross amount
Financial assets
Loans		14,005		14,006
Parent Entity | Australia | Government, administration and defence | Gross amount
Financial assets
Loans		746		620
Parent Entity | Australia | Manufacturing | Gross amount
Financial assets
Loans		9,155		9,072
Parent Entity | Australia | Mining | Gross amount
Financial assets
Loans		2,849		3,279
Parent Entity | Australia | Property | Gross amount
Financial assets
Loans		44,707		45,471
Parent Entity | Australia | Property services and business services | Gross amount
Financial assets
Loans		13,192		12,433
Parent Entity | Australia | Services | Gross amount
Financial assets
Loans		11,853		11,891
Parent Entity | Australia | Trade | Gross amount
Financial assets
Loans		15,961		16,291
Parent Entity | Australia | Transport and storage | Gross amount
Financial assets
Loans		7,961		8,456
Parent Entity | Australia | Utilities | Gross amount
Financial assets
Loans		4,053		4,324
Parent Entity | Australia | Retail lending | Gross amount
Financial assets
Loans		465,535		462,568
Parent Entity | Australia | Other | Gross amount
Financial assets
Loans		4,945		5,848
Parent Entity | New Zealand | Gross amount
Financial assets
Loans		411		376
Parent Entity | New Zealand | Agriculture, forestry and fishing | Gross amount
Financial assets
Loans		5		2
Parent Entity | New Zealand | Construction | Gross amount
Financial assets
Loans		8		5
Parent Entity | New Zealand | Manufacturing | Gross amount
Financial assets
Loans		94		98
Parent Entity | New Zealand | Property services and business services | Gross amount
Financial assets
Loans		7		8
Parent Entity | New Zealand | Trade | Gross amount
Financial assets
Loans		297		263
Parent Entity | Other overseas | Gross amount
Financial assets
Loans		15,738		14,881
Parent Entity | Other overseas | Accommodation, cafes and restaurants | Gross amount
Financial assets
Loans		67		70
Parent Entity | Other overseas | Agriculture, forestry and fishing | Gross amount
Financial assets
Loans		130		4
Parent Entity | Other overseas | Construction | Gross amount
Financial assets
Loans		47		59
Parent Entity | Other overseas | Finance and insurance | Gross amount
Financial assets
Loans		4,624		4,769
Parent Entity | Other overseas | Government, administration and defence | Gross amount
Financial assets
Loans		2		24
Parent Entity | Other overseas | Manufacturing | Gross amount
Financial assets
Loans		3,780		3,253
Parent Entity | Other overseas | Mining | Gross amount
Financial assets
Loans		465		323
Parent Entity | Other overseas | Property | Gross amount
Financial assets
Loans		226		234
Parent Entity | Other overseas | Property services and business services | Gross amount
Financial assets
Loans		1,528		1,595
Parent Entity | Other overseas | Services | Gross amount
Financial assets
Loans		216		187
Parent Entity | Other overseas | Trade | Gross amount
Financial assets
Loans		2,115		2,126
Parent Entity | Other overseas | Transport and storage | Gross amount
Financial assets
Loans		886		1,127
Parent Entity | Other overseas | Utilities | Gross amount
Financial assets
Loans		1,036		734
Parent Entity | Other overseas | Retail lending | Gross amount
Financial assets
Loans		587		277
Parent Entity | Other overseas | Other | Gross amount
Financial assets
Loans		$ 29		$ 99
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Loans - Consolidated contractua

Loans - Consolidated contractual maturity distribution (Details) $ in Millions	Sep. 30, 2019AUD ($)
Financial assets
Loans and receivables, contractual maturity amount	$ 718,378
Australia
Financial assets
Loans and receivables, contractual maturity amount	622,808
New Zealand
Financial assets
Loans and receivables, contractual maturity amount	78,725
Other overseas
Financial assets
Loans and receivables, contractual maturity amount	16,845
Within 1 Year
Financial assets
Loans and receivables, contractual maturity amount	100,424
Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	75,279
Within 1 Year | New Zealand
Financial assets
Loans and receivables, contractual maturity amount	19,124
Within 1 Year | Other overseas
Financial assets
Loans and receivables, contractual maturity amount	6,021
Over 1 Year to 5 Years
Financial assets
Loans and receivables, contractual maturity amount	122,409
Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	100,090
Over 1 Year to 5 Years | New Zealand
Financial assets
Loans and receivables, contractual maturity amount	12,790
Over 1 Year to 5 Years | Other overseas
Financial assets
Loans and receivables, contractual maturity amount	9,529
Over 5 Years
Financial assets
Loans and receivables, contractual maturity amount	495,545
Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	447,439
Over 5 Years | New Zealand
Financial assets
Loans and receivables, contractual maturity amount	46,811
Over 5 Years | Other overseas
Financial assets
Loans and receivables, contractual maturity amount	1,295
Accommodation, cafes and restaurants | Australia
Financial assets
Loans and receivables, contractual maturity amount	8,039
Accommodation, cafes and restaurants | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	2,776
Accommodation, cafes and restaurants | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	4,883
Accommodation, cafes and restaurants | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	380
Agriculture, forestry and fishing | Australia
Financial assets
Loans and receivables, contractual maturity amount	9,210
Agriculture, forestry and fishing | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	2,676
Agriculture, forestry and fishing | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	5,967
Agriculture, forestry and fishing | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	567
Construction | Australia
Financial assets
Loans and receivables, contractual maturity amount	7,186
Construction | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	1,785
Construction | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	4,514
Construction | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	887
Finance and insurance | Australia
Financial assets
Loans and receivables, contractual maturity amount	14,069
Finance and insurance | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	6,278
Finance and insurance | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	5,054
Finance and insurance | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	2,737
Government, administration and defence | Australia
Financial assets
Loans and receivables, contractual maturity amount	753
Government, administration and defence | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	286
Government, administration and defence | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	189
Government, administration and defence | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	278
Manufacturing | Australia
Financial assets
Loans and receivables, contractual maturity amount	9,337
Manufacturing | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	3,420
Manufacturing | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	5,413
Manufacturing | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	504
Mining | Australia
Financial assets
Loans and receivables, contractual maturity amount	2,869
Mining | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	353
Mining | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	1,734
Mining | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	782
Property | Australia
Financial assets
Loans and receivables, contractual maturity amount	44,769
Property | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	18,410
Property | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	24,821
Property | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	1,538
Property services and business services | Australia
Financial assets
Loans and receivables, contractual maturity amount	14,035
Property services and business services | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	3,011
Property services and business services | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	8,969
Property services and business services | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	2,055
Services | Australia
Financial assets
Loans and receivables, contractual maturity amount	12,099
Services | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	3,915
Services | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	6,395
Services | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	1,789
Trade | Australia
Financial assets
Loans and receivables, contractual maturity amount	16,144
Trade | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	7,314
Trade | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	7,649
Trade | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	1,181
Transport and storage | Australia
Financial assets
Loans and receivables, contractual maturity amount	8,268
Transport and storage | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	1,603
Transport and storage | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	5,758
Transport and storage | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	907
Utilities | Australia
Financial assets
Loans and receivables, contractual maturity amount	4,077
Utilities | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	1,009
Utilities | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	2,839
Utilities | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	229
Retail lending | Australia
Financial assets
Loans and receivables, contractual maturity amount	466,550
Retail lending | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	21,725
Retail lending | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	12,394
Retail lending | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	432,431
Other | Australia
Financial assets
Loans and receivables, contractual maturity amount	5,403
Other | Within 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	718
Other | Over 1 Year to 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	3,511
Other | Over 5 Years | Australia
Financial assets
Loans and receivables, contractual maturity amount	$ 1,174

Loans - Interest rate segmentat

Loans - Interest rate segmentation (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Financial assets
Loans and receivables, contractual maturity amount	$ 718,378
Australia
Financial assets
Loans and receivables, contractual maturity amount	622,808
New Zealand
Financial assets
Loans and receivables, contractual maturity amount	78,725
Other overseas
Financial assets
Loans and receivables, contractual maturity amount	16,845
Over 1 Year
Financial assets
Loans and receivables, contractual maturity amount	617,954	$ 616,558
Over 1 Year | Variable Interest Rates
Financial assets
Loans and receivables, contractual maturity amount	437,477	442,702
Over 1 Year | Fixed interest rate
Financial assets
Loans and receivables, contractual maturity amount	180,477	173,856
Over 1 Year | Australia
Financial assets
Loans and receivables, contractual maturity amount	547,529	550,963
Over 1 Year | Australia | Variable Interest Rates
Financial assets
Loans and receivables, contractual maturity amount	418,494	423,886
Over 1 Year | Australia | Fixed interest rate
Financial assets
Loans and receivables, contractual maturity amount	129,035	127,077
Over 1 Year | New Zealand
Financial assets
Loans and receivables, contractual maturity amount	59,601	56,486
Over 1 Year | New Zealand | Variable Interest Rates
Financial assets
Loans and receivables, contractual maturity amount	9,102	10,634
Over 1 Year | New Zealand | Fixed interest rate
Financial assets
Loans and receivables, contractual maturity amount	50,499	45,852
Over 1 Year | Other overseas
Financial assets
Loans and receivables, contractual maturity amount	10,824	9,109
Over 1 Year | Other overseas | Variable Interest Rates
Financial assets
Loans and receivables, contractual maturity amount	9,881	8,182
Over 1 Year | Other overseas | Fixed interest rate
Financial assets
Loans and receivables, contractual maturity amount	$ 943	$ 927

Provisions for expected credi_3

Provisions for expected credit losses/impairment charges (Details) - AUD ($) $ in Millions	Oct. 01, 2018	Sep. 30, 2019	Sep. 30, 2018
Loans and credit commitments
Due to changes in credit quality:
Percentage of change in gross exposure		1.00%
Loans and credit commitments | Provisions for ECL on loans and credit commitments
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			$ 3,053
Restatement for adoption of AASB 9	$ 980
Due to changes in credit quality:
Business activity during the year		$ (170)
Net remeasurement of provision for ECL		1,136
Write-offs		(1,154)
Exchange rate and other adjustments		68
Balance at the end of the year	4,033	3,913
Increase (decrease) in credit exposure due to transfers		236
Loans and credit commitments | Provisions for ECL on loans and credit commitments | Individually assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			422
Restatement for adoption of AASB 9	(422)
Due to changes in credit quality:
Balance at the end of the year		412
Loans and credit commitments | Provisions for ECL on loans and credit commitments | Collectively assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			2,631
Restatement for adoption of AASB 9	(2,631)
Due to changes in credit quality:
Balance at the end of the year		3,501
Loans and credit commitments | Provisions for ECL on loans and credit commitments | Performing - Stage 1
Provisions for expected credit losses
Restatement for adoption of AASB 9	877
Due to changes in credit quality:
Transfers to Stage 1		1,458
Transfers to Stage 2		(242)
Transfers to Stage 3		(5)
Business activity during the year		179
Net remeasurement of provision for ECL		(1,385)
Exchange rate and other adjustments		2
Balance at the end of the year	877	884
Loans and credit commitments | Provisions for ECL on loans and credit commitments | Performing - Stage 1 | Collectively assessed
Due to changes in credit quality:
Balance at the end of the year		884
Loans and credit commitments | Provisions for ECL on loans and credit commitments | Performing - Stage 2
Provisions for expected credit losses
Restatement for adoption of AASB 9	1,884
Due to changes in credit quality:
Transfers to Stage 1		(1,404)
Transfers to Stage 2		956
Transfers to Stage 3		(621)
Business activity during the year		(19)
Net remeasurement of provision for ECL		874
Exchange rate and other adjustments		4
Balance at the end of the year	1,884	1,674
Loans and credit commitments | Provisions for ECL on loans and credit commitments | Performing - Stage 2 | Collectively assessed
Due to changes in credit quality:
Balance at the end of the year		1,674
Loans and credit commitments | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3
Provisions for expected credit losses
Restatement for adoption of AASB 9	1,272
Due to changes in credit quality:
Transfers to Stage 1		(54)
Transfers to Stage 2		(714)
Transfers to Stage 3		626
Business activity during the year		(330)
Net remeasurement of provision for ECL		1,647
Write-offs		(1,154)
Exchange rate and other adjustments		62
Balance at the end of the year	1,272	1,355
Loans and credit commitments | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3 | Individually assessed
Due to changes in credit quality:
Balance at the end of the year		412
Loans and credit commitments | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3 | Collectively assessed
Due to changes in credit quality:
Balance at the end of the year		943
Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			482
Restatement for adoption of AASB 9	500
Due to changes in credit quality:
Business activity during the year		(159)
Net remeasurement of provision for ECL		382
Write-offs		(119)
Exchange rate and other adjustments		22
Balance at the end of the year	982	1,108
Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments | Individually assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			97
Restatement for adoption of AASB 9	(97)
Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments | Collectively assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			385
Restatement for adoption of AASB 9	(385)
Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments | Performing - Stage 1
Provisions for expected credit losses
Restatement for adoption of AASB 9	130
Due to changes in credit quality:
Transfers to Stage 1		343
Transfers to Stage 2		(38)
Business activity during the year		17
Net remeasurement of provision for ECL		(289)
Balance at the end of the year	130	163
Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments | Performing - Stage 2
Provisions for expected credit losses
Restatement for adoption of AASB 9	351
Due to changes in credit quality:
Transfers to Stage 1		(317)
Transfers to Stage 2		396
Transfers to Stage 3		(145)
Business activity during the year		(35)
Net remeasurement of provision for ECL		104
Balance at the end of the year	351	354
Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3
Provisions for expected credit losses
Restatement for adoption of AASB 9	501
Due to changes in credit quality:
Transfers to Stage 1		(26)
Transfers to Stage 2		(358)
Transfers to Stage 3		145
Business activity during the year		(141)
Net remeasurement of provision for ECL		567
Write-offs		(119)
Exchange rate and other adjustments		22
Balance at the end of the year	501	591
Loans and credit commitments | Personal | Performing - Stage 2
Due to changes in credit quality:
Increase (decrease) in credit exposure due to transfers		(2,100)
Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			764
Restatement for adoption of AASB 9	328
Due to changes in credit quality:
Business activity during the year		(116)
Net remeasurement of provision for ECL		789
Write-offs		(822)
Exchange rate and other adjustments		32
Balance at the end of the year	1,092	975
Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments | Individually assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			3
Restatement for adoption of AASB 9	(3)
Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments | Collectively assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			761
Restatement for adoption of AASB 9	(761)
Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments | Performing - Stage 1
Provisions for expected credit losses
Restatement for adoption of AASB 9	263
Due to changes in credit quality:
Transfers to Stage 1		849
Transfers to Stage 2		(148)
Transfers to Stage 3		(2)
Business activity during the year		62
Net remeasurement of provision for ECL		(757)
Exchange rate and other adjustments		1
Balance at the end of the year	263	268
Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments | Performing - Stage 2
Provisions for expected credit losses
Restatement for adoption of AASB 9	589
Due to changes in credit quality:
Transfers to Stage 1		(839)
Transfers to Stage 2		368
Transfers to Stage 3		(350)
Business activity during the year		(18)
Net remeasurement of provision for ECL		708
Exchange rate and other adjustments		1
Balance at the end of the year	589	459
Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3
Provisions for expected credit losses
Restatement for adoption of AASB 9	240
Due to changes in credit quality:
Transfers to Stage 1		(10)
Transfers to Stage 2		(220)
Transfers to Stage 3		352
Business activity during the year		(160)
Net remeasurement of provision for ECL		838
Write-offs		(822)
Exchange rate and other adjustments		30
Balance at the end of the year	240	248
Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			1,807
Restatement for adoption of AASB 9	152
Due to changes in credit quality:
Business activity during the year		105
Net remeasurement of provision for ECL		(35)
Write-offs		(213)
Exchange rate and other adjustments		14
Balance at the end of the year	1,959	1,830
Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments | Individually assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			322
Restatement for adoption of AASB 9	(322)
Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments | Collectively assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			1,485
Restatement for adoption of AASB 9	(1,485)
Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments | Performing - Stage 1
Provisions for expected credit losses
Restatement for adoption of AASB 9	484
Due to changes in credit quality:
Transfers to Stage 1		266
Transfers to Stage 2		(56)
Transfers to Stage 3		(3)
Business activity during the year		100
Net remeasurement of provision for ECL		(339)
Exchange rate and other adjustments		1
Balance at the end of the year	484	453
Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments | Performing - Stage 2
Provisions for expected credit losses
Restatement for adoption of AASB 9	944
Due to changes in credit quality:
Transfers to Stage 1		(248)
Transfers to Stage 2		192
Transfers to Stage 3		(126)
Business activity during the year		34
Net remeasurement of provision for ECL		62
Exchange rate and other adjustments		3
Balance at the end of the year	944	861
Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3
Provisions for expected credit losses
Restatement for adoption of AASB 9	531
Due to changes in credit quality:
Transfers to Stage 1		(18)
Transfers to Stage 2		(136)
Transfers to Stage 3		129
Business activity during the year		(29)
Net remeasurement of provision for ECL		242
Write-offs		(213)
Exchange rate and other adjustments		10
Balance at the end of the year	531	516
Loans and credit commitments | Housing and business lending portfolio | Performing - Stage 1
Due to changes in credit quality:
Increase (decrease) in credit exposure due to transfers		7,600
Loans and credit commitments | Housing and business lending portfolio | Non-performing - Stage 3
Due to changes in credit quality:
Increase (decrease) in credit exposure due to transfers		900
Credit commitments | Provision for ECL on credit commitments
Due to changes in credit quality:
Balance at the end of the year		305
Credit commitments | Provision for ECL on credit commitments | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		121
Credit commitments | Provision for ECL on credit commitments | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		178
Credit commitments | Provision for ECL on credit commitments | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		6
Credit commitments | Housing | Provision for ECL on credit commitments
Due to changes in credit quality:
Balance at the end of the year		7
Credit commitments | Housing | Provision for ECL on credit commitments | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		5
Credit commitments | Housing | Provision for ECL on credit commitments | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		2
Credit commitments | Personal | Provision for ECL on credit commitments
Due to changes in credit quality:
Balance at the end of the year		71
Credit commitments | Personal | Provision for ECL on credit commitments | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		36
Credit commitments | Personal | Provision for ECL on credit commitments | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		35
Credit commitments | Business | Provision for ECL on credit commitments
Due to changes in credit quality:
Balance at the end of the year		227
Credit commitments | Business | Provision for ECL on credit commitments | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		80
Credit commitments | Business | Provision for ECL on credit commitments | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		141
Credit commitments | Business | Provision for ECL on credit commitments | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		6
Loans | Provision for ECL on loans
Due to changes in credit quality:
Balance at the end of the year		3,608
Loans | Provision for ECL on loans | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		763
Loans | Provision for ECL on loans | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		1,496
Loans | Provision for ECL on loans | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		1,349
Loans | Housing | Provision for ECL on loans
Due to changes in credit quality:
Balance at the end of the year		1,101
Loans | Housing | Provision for ECL on loans | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		158
Loans | Housing | Provision for ECL on loans | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		352
Loans | Housing | Provision for ECL on loans | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		591
Loans | Personal
Due to changes in credit quality:
Balance at the end of the year		904
Loans | Personal | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		232
Loans | Personal | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		424
Loans | Personal | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		248
Loans | Business | Provision for ECL on loans
Due to changes in credit quality:
Balance at the end of the year		1,603
Loans | Business | Provision for ECL on loans | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		373
Loans | Business | Provision for ECL on loans | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		720
Loans | Business | Provision for ECL on loans | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		510
Parent Entity | Loans and credit commitments | Provisions for ECL on loans and credit commitments
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			2,613
Restatement for adoption of AASB 9	846
Due to changes in credit quality:
Business activity during the year		(183)
Net remeasurement of provision for ECL		1,076
Write-offs		(1,023)
Exchange rate and other adjustments		49
Balance at the end of the year	3,459	3,378
Increase (decrease) in credit exposure due to transfers		209
Parent Entity | Loans and credit commitments | Provisions for ECL on loans and credit commitments | Individually assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			375
Restatement for adoption of AASB 9	(375)
Due to changes in credit quality:
Balance at the end of the year		364
Parent Entity | Loans and credit commitments | Provisions for ECL on loans and credit commitments | Collectively assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			2,238
Restatement for adoption of AASB 9	(2,238)
Due to changes in credit quality:
Balance at the end of the year		3,014
Parent Entity | Loans and credit commitments | Provisions for ECL on loans and credit commitments | Performing - Stage 1
Provisions for expected credit losses
Restatement for adoption of AASB 9	741
Due to changes in credit quality:
Transfers to Stage 1		1,191
Transfers to Stage 2		(220)
Transfers to Stage 3		(3)
Business activity during the year		168
Net remeasurement of provision for ECL		(1,130)
Balance at the end of the year	741	747
Parent Entity | Loans and credit commitments | Provisions for ECL on loans and credit commitments | Performing - Stage 1 | Collectively assessed
Due to changes in credit quality:
Balance at the end of the year		747
Parent Entity | Loans and credit commitments | Provisions for ECL on loans and credit commitments | Performing - Stage 2
Provisions for expected credit losses
Restatement for adoption of AASB 9	1,605
Due to changes in credit quality:
Transfers to Stage 1		(1,153)
Transfers to Stage 2		860
Transfers to Stage 3		(554)
Business activity during the year		7
Net remeasurement of provision for ECL		654
Exchange rate and other adjustments		1
Balance at the end of the year	1,605	1,420
Parent Entity | Loans and credit commitments | Provisions for ECL on loans and credit commitments | Performing - Stage 2 | Collectively assessed
Due to changes in credit quality:
Balance at the end of the year		1,420
Parent Entity | Loans and credit commitments | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3
Provisions for expected credit losses
Restatement for adoption of AASB 9	1,113
Due to changes in credit quality:
Transfers to Stage 1		(38)
Transfers to Stage 2		(640)
Transfers to Stage 3		557
Business activity during the year		(358)
Net remeasurement of provision for ECL		1,552
Write-offs		(1,023)
Exchange rate and other adjustments		48
Balance at the end of the year	1,113	1,211
Parent Entity | Loans and credit commitments | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3 | Individually assessed
Due to changes in credit quality:
Balance at the end of the year		364
Parent Entity | Loans and credit commitments | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3 | Collectively assessed
Due to changes in credit quality:
Balance at the end of the year		847
Parent Entity | Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			598
Restatement for adoption of AASB 9	243
Due to changes in credit quality:
Business activity during the year		(145)
Net remeasurement of provision for ECL		432
Write-offs		(115)
Exchange rate and other adjustments		20
Balance at the end of the year	841	1,033
Parent Entity | Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments | Individually assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			82
Restatement for adoption of AASB 9	(82)
Parent Entity | Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments | Collectively assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			516
Restatement for adoption of AASB 9	(516)
Parent Entity | Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments | Performing - Stage 1
Provisions for expected credit losses
Restatement for adoption of AASB 9	105
Due to changes in credit quality:
Transfers to Stage 1		322
Transfers to Stage 2		(36)
Business activity during the year		15
Net remeasurement of provision for ECL		(265)
Balance at the end of the year	105	141
Parent Entity | Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments | Performing - Stage 2
Provisions for expected credit losses
Restatement for adoption of AASB 9	334
Due to changes in credit quality:
Transfers to Stage 1		(302)
Transfers to Stage 2		386
Transfers to Stage 3		(141)
Business activity during the year		(33)
Net remeasurement of provision for ECL		91
Balance at the end of the year	334	335
Parent Entity | Loans and credit commitments | Housing | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3
Provisions for expected credit losses
Restatement for adoption of AASB 9	402
Due to changes in credit quality:
Transfers to Stage 1		(20)
Transfers to Stage 2		(350)
Transfers to Stage 3		141
Business activity during the year		(127)
Net remeasurement of provision for ECL		606
Write-offs		(115)
Exchange rate and other adjustments		20
Balance at the end of the year	402	557
Parent Entity | Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			527
Restatement for adoption of AASB 9	428
Due to changes in credit quality:
Business activity during the year		(107)
Net remeasurement of provision for ECL		706
Write-offs		(733)
Exchange rate and other adjustments		22
Balance at the end of the year	955	843
Parent Entity | Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments | Individually assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			3
Restatement for adoption of AASB 9	(3)
Parent Entity | Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments | Collectively assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			524
Restatement for adoption of AASB 9	(524)
Parent Entity | Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments | Performing - Stage 1
Provisions for expected credit losses
Restatement for adoption of AASB 9	215
Due to changes in credit quality:
Transfers to Stage 1		635
Transfers to Stage 2		(138)
Transfers to Stage 3		(1)
Business activity during the year		62
Net remeasurement of provision for ECL		(544)
Balance at the end of the year	215	229
Parent Entity | Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments | Performing - Stage 2
Provisions for expected credit losses
Restatement for adoption of AASB 9	540
Due to changes in credit quality:
Transfers to Stage 1		(633)
Transfers to Stage 2		319
Transfers to Stage 3		(311)
Business activity during the year		(11)
Net remeasurement of provision for ECL		497
Balance at the end of the year	540	401
Parent Entity | Loans and credit commitments | Personal | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3
Provisions for expected credit losses
Restatement for adoption of AASB 9	200
Due to changes in credit quality:
Transfers to Stage 1		(2)
Transfers to Stage 2		(181)
Transfers to Stage 3		312
Business activity during the year		(158)
Net remeasurement of provision for ECL		753
Write-offs		(733)
Exchange rate and other adjustments		22
Balance at the end of the year	200	213
Parent Entity | Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			1,488
Restatement for adoption of AASB 9	175
Due to changes in credit quality:
Business activity during the year		69
Net remeasurement of provision for ECL		(62)
Write-offs		(175)
Exchange rate and other adjustments		7
Balance at the end of the year	1,663	1,502
Parent Entity | Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments | Individually assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			290
Restatement for adoption of AASB 9	(290)
Parent Entity | Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments | Collectively assessed
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			$ 1,198
Restatement for adoption of AASB 9	(1,198)
Parent Entity | Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments | Performing - Stage 1
Provisions for expected credit losses
Restatement for adoption of AASB 9	421
Due to changes in credit quality:
Transfers to Stage 1		234
Transfers to Stage 2		(46)
Transfers to Stage 3		(2)
Business activity during the year		91
Net remeasurement of provision for ECL		(321)
Balance at the end of the year	421	377
Parent Entity | Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments | Performing - Stage 2
Provisions for expected credit losses
Restatement for adoption of AASB 9	731
Due to changes in credit quality:
Transfers to Stage 1		(218)
Transfers to Stage 2		155
Transfers to Stage 3		(102)
Business activity during the year		51
Net remeasurement of provision for ECL		66
Exchange rate and other adjustments		1
Balance at the end of the year	731	684
Parent Entity | Loans and credit commitments | Business | Provisions for ECL on loans and credit commitments | Non-performing - Stage 3
Provisions for expected credit losses
Restatement for adoption of AASB 9	511
Due to changes in credit quality:
Transfers to Stage 1		(16)
Transfers to Stage 2		(109)
Transfers to Stage 3		104
Business activity during the year		(73)
Net remeasurement of provision for ECL		193
Write-offs		(175)
Exchange rate and other adjustments		6
Balance at the end of the year	$ 511	441
Parent Entity | Loans and credit commitments | Housing and business lending portfolio | Performing - Stage 1
Due to changes in credit quality:
Increase (decrease) in credit exposure due to transfers		4,100
Parent Entity | Credit commitments | Provision for ECL on credit commitments
Due to changes in credit quality:
Balance at the end of the year		275
Parent Entity | Credit commitments | Provision for ECL on credit commitments | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		107
Parent Entity | Credit commitments | Provision for ECL on credit commitments | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		163
Parent Entity | Credit commitments | Provision for ECL on credit commitments | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		5
Parent Entity | Credit commitments | Housing | Provision for ECL on credit commitments
Due to changes in credit quality:
Balance at the end of the year		5
Parent Entity | Credit commitments | Housing | Provision for ECL on credit commitments | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		4
Parent Entity | Credit commitments | Housing | Provision for ECL on credit commitments | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		1
Parent Entity | Credit commitments | Personal | Provision for ECL on credit commitments
Due to changes in credit quality:
Balance at the end of the year		61
Parent Entity | Credit commitments | Personal | Provision for ECL on credit commitments | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		29
Parent Entity | Credit commitments | Personal | Provision for ECL on credit commitments | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		32
Parent Entity | Credit commitments | Business | Provision for ECL on credit commitments
Due to changes in credit quality:
Balance at the end of the year		209
Parent Entity | Credit commitments | Business | Provision for ECL on credit commitments | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		74
Parent Entity | Credit commitments | Business | Provision for ECL on credit commitments | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		130
Parent Entity | Credit commitments | Business | Provision for ECL on credit commitments | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		5
Parent Entity | Loans | Provision for ECL on loans
Due to changes in credit quality:
Balance at the end of the year		3,103
Parent Entity | Loans | Provision for ECL on loans | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		640
Parent Entity | Loans | Provision for ECL on loans | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		1,257
Parent Entity | Loans | Provision for ECL on loans | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		1,206
Parent Entity | Loans | Housing | Provision for ECL on loans
Due to changes in credit quality:
Balance at the end of the year		1,028
Parent Entity | Loans | Housing | Provision for ECL on loans | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		137
Parent Entity | Loans | Housing | Provision for ECL on loans | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		334
Parent Entity | Loans | Housing | Provision for ECL on loans | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		557
Parent Entity | Loans | Personal | Provision for ECL on loans
Due to changes in credit quality:
Balance at the end of the year		782
Parent Entity | Loans | Personal | Provision for ECL on loans | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		200
Parent Entity | Loans | Personal | Provision for ECL on loans | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		369
Parent Entity | Loans | Personal | Provision for ECL on loans | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		213
Parent Entity | Loans | Business | Provision for ECL on loans
Due to changes in credit quality:
Balance at the end of the year		1,293
Parent Entity | Loans | Business | Provision for ECL on loans | Performing - Stage 1
Due to changes in credit quality:
Balance at the end of the year		303
Parent Entity | Loans | Business | Provision for ECL on loans | Performing - Stage 2
Due to changes in credit quality:
Balance at the end of the year		554
Parent Entity | Loans | Business | Provision for ECL on loans | Non-performing - Stage 3
Due to changes in credit quality:
Balance at the end of the year		$ 436

Provisions for expected credi_4

Provisions for expected credit losses/impairment charges - Sensitivity of the provision for ECL (Details) - Loans and credit commitments $ in Millions	1 Months Ended	12 Months Ended
	Sep. 30, 2019AUD ($)	Sep. 30, 2019AUD ($)
Provisions for expected credit losses
Percentage of base case scenario		62.50%
Percentage of downside scenario		27.50%
Percentage of upside scenario		10.00%
Reduction in base case scenario	(2.50%)
Increase in downside scenario	2.50%
Percent of GDP growth		2.50%
Reduction in rate of growth in commercial property prices		(1.10%)
Increase in growth of residential property prices		1.00%
Reduction in cash rate		(0.50%)
Increase in unemployment rate		5.60%
Reported probability-weighted ECL
Provisions for expected credit losses
Financial assets	$ 3,913	$ 3,913
100% base case ECL
Provisions for expected credit losses
Financial assets	2,748	2,748
100% downside ECL
Provisions for expected credit losses
Financial assets	7,065	7,065
Parent Entity | Reported probability-weighted ECL
Provisions for expected credit losses
Financial assets	3,378	3,378
Parent Entity | 100% base case ECL
Provisions for expected credit losses
Financial assets	2,387	2,387
Parent Entity | 100% downside ECL
Provisions for expected credit losses
Financial assets	$ 6,067	$ 6,067

Provisions for expected credi_5

Provisions for expected credit losses/impairment charges - Debt securities (Details) - Provision for ECL - Debt securities - AUD ($) $ in Millions	Oct. 01, 2018	Sep. 30, 2019	Sep. 30, 2018
Provisions for expected credit losses
Stage 1 - change in the provision during the year		$ 0
Balance at the end of the period	$ 11	11
Previously stated
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			$ 0
Restatement for adoption of new accounting policy | AASB 9
Provisions for expected credit losses
Restatement for adoption of AASB 9	11
FVOCI
Provisions for expected credit losses
Stage 1 - change in the provision during the year		0
Balance at the end of the period	2	2
FVOCI | Previously stated
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			0
FVOCI | Restatement for adoption of new accounting policy | AASB 9
Provisions for expected credit losses
Restatement for adoption of AASB 9	2
Amortised cost
Provisions for expected credit losses
Stage 1 - change in the provision during the year		0
Balance at the end of the period	9	9
Amortised cost | Previously stated
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			0
Amortised cost | Restatement for adoption of new accounting policy | AASB 9
Provisions for expected credit losses
Restatement for adoption of AASB 9	9
Parent Entity
Provisions for expected credit losses
Stage 1 - change in the provision during the year		0
Balance at the end of the period	2	2
Parent Entity | Previously stated
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			0
Parent Entity | Restatement for adoption of new accounting policy | AASB 9
Provisions for expected credit losses
Restatement for adoption of AASB 9	2
Parent Entity | FVOCI
Provisions for expected credit losses
Stage 1 - change in the provision during the year		0
Balance at the end of the period	2	2
Parent Entity | FVOCI | Previously stated
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			0
Parent Entity | FVOCI | Restatement for adoption of new accounting policy | AASB 9
Provisions for expected credit losses
Restatement for adoption of AASB 9	2
Parent Entity | Amortised cost
Provisions for expected credit losses
Stage 1 - change in the provision during the year		0
Balance at the end of the period	0	$ 0
Parent Entity | Amortised cost | Previously stated
Provisions for expected credit losses
Provisions for Impairment, carrying amount immediately before initial adoption of AASB 9			$ 0
Parent Entity | Amortised cost | Restatement for adoption of new accounting policy | AASB 9
Provisions for expected credit losses
Restatement for adoption of AASB 9	$ 0

Provisions for expected credi_6

Provisions for expected credit losses/impairment charges - Reconciliation of provision for impairment charges (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Reconciliation of provision for impairment charges
Opening balance	$ 3,053	$ 3,119	$ 3,602	$ 3,332
Write-offs	(1,154)	(1,127)	(1,656)	(1,189)	$ (1,238)
Closing balance	3,913	3,053	3,119	3,602	$ 3,332
Individually assessed
Reconciliation of provision for impairment charges
Opening balance	422	480	869
Provisions raised		371	610
Write-backs		(150)	(288)
Write-offs		(269)	(688)
Interest adjustment		(11)	(16)
Other adjustments		1	(7)
Closing balance		422	480	869
Collectively assessed
Reconciliation of provision for impairment charges
Opening balance	2,631	2,639	2,733
Provisions raised		668	699
Write-offs		(858)	(968)
Interest adjustment		179	188
Other adjustments		3	(13)
Closing balance		2,631	2,639	$ 2,733
Loans and credit commitments
Reconciliation of provision for impairment charges
Opening balance	3,053	3,119
Closing balance		3,053	3,119
Loans
Reconciliation of provision for impairment charges
Opening balance	2,814	2,866
Closing balance		2,814	2,866
Credit commitments
Reconciliation of provision for impairment charges
Opening balance	239	253
Closing balance		239	253
Parent Entity | Individually assessed
Reconciliation of provision for impairment charges
Opening balance	375	417
Provisions raised		341
Write-backs		(131)
Write-offs		(248)
Interest adjustment		(11)
Other adjustments		7
Closing balance		375	417
Parent Entity | Collectively assessed
Reconciliation of provision for impairment charges
Opening balance	2,238	2,180
Provisions raised		610
Write-offs		(742)
Interest adjustment		148
Other adjustments		42
Closing balance		2,238	$ 2,180
Parent Entity | Loans and credit commitments
Reconciliation of provision for impairment charges
Opening balance	2,613
Closing balance		2,613
Parent Entity | Loans
Reconciliation of provision for impairment charges
Opening balance	2,407
Closing balance		2,407
Parent Entity | Credit commitments
Reconciliation of provision for impairment charges
Opening balance	$ 206
Closing balance		$ 206

Provisions for expected credi_7

Provisions for expected credit losses/impairment charges - Recoveries (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Financial assets
Provisions for ECL/impairment	$ 3,913	$ 3,053	$ 3,119	$ 3,602	$ 3,332
Percentage of provision for ECL/impairment charges on loans and credit commitments	100.00%	100.00%	100.00%	100.00%	100.00%
Contractual amount outstanding of write-offs which remain subject to enforcement activity	$ 1,093
Recoveries	172	$ 179	$ 168	$ 137	$ 131
Write-offs	(1,154)	(1,127)	(1,656)	(1,189)	(1,238)
Net write-offs and recoveries	(982)	(948)	(1,488)	(1,052)	(1,107)
Australia
Financial assets
Provisions for ECL/impairment	$ 3,506	$ 2,644	$ 2,692	$ 3,064	$ 2,827
Percentage of provision for ECL/impairment charges on loans and credit commitments	89.60%	86.60%	86.30%	85.10%	84.80%
Recoveries	$ 154	$ 155	$ 149	$ 131	$ 113
Write-offs	(1,098)	(1,058)	(1,602)	(1,119)	(1,110)
New Zealand
Financial assets
Provisions for ECL/impairment	$ 327	$ 329	$ 350	$ 445	$ 407
Percentage of provision for ECL/impairment charges on loans and credit commitments	8.40%	10.80%	11.20%	12.40%	12.20%
Recoveries	$ 18	$ 24	$ 19	$ 6	$ 18
Write-offs	(54)	(69)	(53)	(67)	(110)
Other overseas
Financial assets
Provisions for ECL/impairment	$ 80	$ 80	$ 77	$ 93	$ 98
Percentage of provision for ECL/impairment charges on loans and credit commitments	2.00%	2.60%	2.50%	2.50%	3.00%
Write-offs	$ (2)		$ (1)	$ (3)	$ (18)
Accommodation, cafes and restaurants | Australia
Financial assets
Provisions for ECL/impairment	$ 75	$ 62	$ 67	$ 95	$ 86
Percentage of provision for ECL/impairment charges on loans and credit commitments	1.90%	2.00%	2.10%	2.70%	2.60%
Recoveries		$ 1	$ 3
Write-offs	$ (12)	(14)	(38)	$ (17)	$ (40)
Accommodation, cafes and restaurants | New Zealand
Financial assets
Provisions for ECL/impairment	$ 2	$ 3	$ 2	$ 2	1
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.10%	0.10%	0.10%	0.10%
Agriculture, forestry and fishing | Australia
Financial assets
Provisions for ECL/impairment	$ 93	$ 69	$ 59	$ 74	$ 115
Percentage of provision for ECL/impairment charges on loans and credit commitments	2.40%	2.30%	1.90%	2.10%	3.40%
Write-offs	$ (4)	$ (12)	$ (10)	$ (12)	$ (36)
Agriculture, forestry and fishing | New Zealand
Financial assets
Provisions for ECL/impairment	$ 67	$ 77	$ 93	$ 120	$ 64
Percentage of provision for ECL/impairment charges on loans and credit commitments	1.70%	2.50%	3.00%	3.30%	1.90%
Write-offs	$ (2)			$ (1)	$ (3)
Construction | Australia
Financial assets
Provisions for ECL/impairment	$ 148	$ 93	$ 86	$ 86	$ 85
Percentage of provision for ECL/impairment charges on loans and credit commitments	3.80%	3.00%	2.80%	2.40%	2.50%
Recoveries	$ 1	$ 1	$ 2	$ 1	$ 4
Write-offs	(13)	(23)	(30)	(20)	(40)
Construction | New Zealand
Financial assets
Provisions for ECL/impairment	$ 9	$ 16	$ 9	$ 9	$ 9
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.20%	0.50%	0.30%	0.20%	0.30%
Write-offs		$ (1)	$ (1)	$ (1)
Finance and insurance | Australia
Financial assets
Provisions for ECL/impairment	$ 55	$ 67	$ 53	$ 131	$ 124
Percentage of provision for ECL/impairment charges on loans and credit commitments	1.40%	2.20%	1.70%	3.70%	3.70%
Recoveries		$ 1	$ 1	$ 34	$ 8
Write-offs	$ (4)	(4)	(6)	(13)	(12)
Finance and insurance | New Zealand
Financial assets
Provisions for ECL/impairment	$ 2	$ 3	$ 3	$ 4	$ 3
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.10%	0.10%	0.10%	0.10%	0.10%
Manufacturing | Australia
Financial assets
Provisions for ECL/impairment	$ 111	$ 196	$ 164	$ 278	$ 219
Percentage of provision for ECL/impairment charges on loans and credit commitments	2.80%	6.40%	5.30%	7.70%	6.60%
Recoveries	$ 1		$ 2	$ 1	$ 3
Write-offs	(12)	$ (12)	(105)	(21)	(20)
Manufacturing | New Zealand
Financial assets
Provisions for ECL/impairment	$ 14	$ 26	$ 24	$ 53	$ 57
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.40%	0.90%	0.80%	1.50%	1.70%
Write-offs					$ (1)
Mining | Australia
Financial assets
Provisions for ECL/impairment	$ 36	$ 91	$ 131	$ 246	$ 190
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.90%	3.00%	4.20%	6.80%	5.70%
Recoveries		$ 1	$ 1
Write-offs	$ (1)	(14)	(46)	$ (18)	$ (17)
Mining | New Zealand
Financial assets
Provisions for ECL/impairment		1	1	$ 15	$ 14
Percentage of provision for ECL/impairment charges on loans and credit commitments				0.40%	0.40%
Write-offs					$ (28)
Property | Australia
Financial assets
Provisions for ECL/impairment	$ 216	$ 204	$ 240	$ 287	$ 314
Percentage of provision for ECL/impairment charges on loans and credit commitments	5.50%	6.70%	7.70%	8.00%	9.40%
Recoveries	$ 8	$ 7	$ 10	$ 3	$ 15
Write-offs	(31)	(39)	(76)	(44)	(104)
Property | New Zealand
Financial assets
Provisions for ECL/impairment	$ 20	$ 27	$ 38	$ 52	$ 62
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.50%	0.90%	1.20%	1.40%	1.90%
Write-offs		$ (13)	$ (2)	$ (10)	$ (18)
Property services and business services | Australia
Financial assets
Provisions for ECL/impairment	$ 230	$ 128	$ 155	$ 216	$ 95
Percentage of provision for ECL/impairment charges on loans and credit commitments	5.90%	4.20%	5.00%	6.00%	2.80%
Recoveries	$ 1	$ 1	$ 3	$ 2	$ 2
Write-offs	(24)	(44)	(203)	(43)	(70)
Property services and business services | New Zealand
Financial assets
Provisions for ECL/impairment	$ 5	$ 8	$ 11	$ 21	$ 22
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.10%	0.20%	0.30%	0.60%	0.60%
Write-offs				$ (2)
Services | Australia
Financial assets
Provisions for ECL/impairment	$ 175	$ 137	$ 126	$ 116	$ 56
Percentage of provision for ECL/impairment charges on loans and credit commitments	4.50%	4.50%	4.00%	3.20%	1.70%
Recoveries		$ 1		$ 2	$ 1
Write-offs	$ (7)	(24)	$ (97)	(36)	(18)
Services | New Zealand
Financial assets
Provisions for ECL/impairment	$ 9	$ 9	$ 14	$ 13	$ 12
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.20%	0.30%	0.40%	0.40%	0.40%
Write-offs		$ (1)			$ (1)
Trade | Australia
Financial assets
Provisions for ECL/impairment	$ 242	$ 199	$ 183	$ 213	$ 209
Percentage of provision for ECL/impairment charges on loans and credit commitments	6.20%	6.50%	5.90%	5.90%	6.30%
Recoveries	$ 2	$ 2	$ 3	$ 1	$ 1
Write-offs	(62)	(56)	(59)	(30)	(56)
Trade | New Zealand
Financial assets
Provisions for ECL/impairment	$ 15	$ 21	$ 17	$ 18	$ 25
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.40%	0.70%	0.50%	0.50%	0.80%
Write-offs	$ (2)	$ (1)	$ (1)	$ (1)	$ (4)
Transport and storage | Australia
Financial assets
Provisions for ECL/impairment	$ 109	$ 79	$ 92	$ 73	$ 142
Percentage of provision for ECL/impairment charges on loans and credit commitments	2.80%	2.60%	2.90%	2.00%	4.30%
Recoveries	$ 1	$ 1	$ 1	$ 1
Write-offs	(14)	(17)	(17)	(48)	$ (24)
Transport and storage | New Zealand
Financial assets
Provisions for ECL/impairment	$ 3	$ 5	$ 5	$ 7	$ 7
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.10%	0.20%	0.20%	0.20%	0.20%
Utilities | Australia
Financial assets
Provisions for ECL/impairment	$ 17	$ 13	$ 15	$ 9	$ 27
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.40%	0.40%	0.50%	0.20%	0.80%
Write-offs	$ (1)	$ (1)		$ (1)	$ (2)
Utilities | New Zealand
Financial assets
Provisions for ECL/impairment	1	$ 2	$ 3	$ 4	$ 2
Percentage of provision for ECL/impairment charges on loans and credit commitments		0.10%	0.10%	0.10%	0.10%
Retail lending | Australia
Financial assets
Provisions for ECL/impairment	$ 1,890	$ 1,200	$ 1,229	$ 1,102	$ 1,046
Percentage of provision for ECL/impairment charges on loans and credit commitments	48.30%	39.30%	39.40%	30.60%	31.40%
Recoveries	$ 135	$ 139	$ 118	$ 84	$ 78
Write-offs	(903)	(793)	(898)	(803)	(658)
Retail lending | New Zealand
Financial assets
Provisions for ECL/impairment	$ 173	$ 130	$ 130	$ 125	$ 128
Percentage of provision for ECL/impairment charges on loans and credit commitments	4.40%	4.30%	4.20%	3.50%	3.80%
Write-offs	$ (50)	$ (53)	$ (49)	$ (51)	$ (55)
Other | Australia
Financial assets
Provisions for ECL/impairment	$ 109	$ 106	$ 92	$ 138	$ 119
Percentage of provision for ECL/impairment charges on loans and credit commitments	2.80%	3.50%	2.90%	3.80%	3.60%
Recoveries	$ 5		$ 5	$ 2	$ 1
Write-offs	(10)	$ (5)	$ (17)	(13)	(13)
Other | New Zealand
Financial assets
Provisions for ECL/impairment	$ 7	1		$ 2	$ 1
Percentage of provision for ECL/impairment charges on loans and credit commitments	0.20%			0.10%
Write-offs				$ (1)
Parent Entity
Financial assets
Contractual amount outstanding of write-offs which remain subject to enforcement activity	$ 962
Recoveries	$ 143	$ 138

Other financial assets (Details

Other financial assets (Details) - AUD ($) $ in Millions		Sep. 30, 2019	Sep. 30, 2018
Other financial assets
Accrued interest receivable		$ 1,144	$ 1,276
Securities sold not delivered		1,687	1,264
Trade debtors		998	1,056
Interbank lending		514	953
Clearing and settlement balances		750	736
Accrued fees and commissions		159	129
Other		115	103
Total other financial assets	[1]	5,367	5,517
Parent Entity
Other financial assets
Accrued interest receivable		1,005	1,103
Securities sold not delivered		1,668	1,264
Trade debtors		517	514
Interbank lending		510	939
Clearing and settlement balances		706	678
Accrued fees and commissions		95	60
Other		114	108
Total other financial assets	[1]	$ 4,615	$ 4,666
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Life insurance assets and lif_3

Life insurance assets and life insurance liabilities - Assets (Details) - AUD ($) $ in Millions		Sep. 30, 2019	Sep. 30, 2018
Disclosure of life insurance assets
Life insurance assets	[1]	$ 9,367	$ 9,450
Unit trusts
Disclosure of life insurance assets
Life insurance assets		6,764	6,545
Equity securities
Disclosure of life insurance assets
Life insurance assets		989	1,223
Debt securities
Disclosure of life insurance assets
Life insurance assets		1,589	1,622
Loans and other assets
Disclosure of life insurance assets
Life insurance assets		25	60
Parent Entity
Disclosure of life insurance assets
Life insurance assets	[1]
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Life insurance assets and lif_4

Life insurance assets and life insurance liabilities - Liabilities (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Reconciliation of movements in policy liabilities
Life insurance liabilities, opening balance	$ 7,597	$ 9,019
Movements in policy liabilities reflected in the income statement	516	698
Contract contributions recognised in policy liabilities	898	738
Contract withdrawals recognised in policy liabilities	(1,218)	(1,115)
Contract fees, expenses and tax recoveries	(73)	(104)
Change in external unit holders of managed investment schemes	(343)	(1,639)
Life insurance liabilities, ending balance	7,377	7,597
Life Investment Contracts
Reconciliation of movements in policy liabilities
Life insurance liabilities, opening balance	8,438	9,854
Movements in policy liabilities reflected in the income statement	504	704
Contract contributions recognised in policy liabilities	898	738
Contract withdrawals recognised in policy liabilities	(1,218)	(1,115)
Contract fees, expenses and tax recoveries	(73)	(104)
Change in external unit holders of managed investment schemes	(343)	(1,639)
Life insurance liabilities, ending balance	8,206	8,438
Life insurance
Reconciliation of movements in policy liabilities
Life insurance liabilities, opening balance	(841)	(835)
Movements in policy liabilities reflected in the income statement	12	(6)
Life insurance liabilities, ending balance	(829)	(841)
Parent Entity
Reconciliation of movements in policy liabilities
Life insurance liabilities, opening balance	0
Life insurance liabilities, ending balance	$ 0	$ 0

Deposits and other borrowings_2

Deposits and other borrowings (Details) - AUD ($) $ in Millions		Sep. 30, 2019	Sep. 30, 2018
Deposits and other borrowings
Deposits and other borrowings	[1]	$ 563,247	$ 559,285
Australia
Deposits and other borrowings
Deposits and other borrowings		475,325	475,413
Australia | Certificates of deposit
Deposits and other borrowings
Deposits and other borrowings		26,259	28,746
Australia | Non-interest bearing, repayable at call
Deposits and other borrowings
Deposits and other borrowings		43,341	41,783
Australia | Other interest bearing at call
Deposits and other borrowings
Deposits and other borrowings		247,161	233,052
Australia | Other interest bearing term
Deposits and other borrowings
Deposits and other borrowings		158,564	171,832
New Zealand
Deposits and other borrowings
Deposits and other borrowings		60,801	57,787
New Zealand | Certificates of deposit
Deposits and other borrowings
Deposits and other borrowings		1,058	1,116
New Zealand | Non-interest bearing, repayable at call
Deposits and other borrowings
Deposits and other borrowings		6,368	5,406
New Zealand | Other interest bearing at call
Deposits and other borrowings
Deposits and other borrowings		22,291	21,368
New Zealand | Other interest bearing term
Deposits and other borrowings
Deposits and other borrowings		31,084	29,897
Other overseas
Deposits and other borrowings
Deposits and other borrowings		27,121	26,085
Other overseas | Certificates of deposit
Deposits and other borrowings
Deposits and other borrowings		11,414	11,672
Other overseas | Non-interest bearing, repayable at call
Deposits and other borrowings
Deposits and other borrowings		824	830
Other overseas | Other interest bearing at call
Deposits and other borrowings
Deposits and other borrowings		1,610	1,638
Other overseas | Other interest bearing term
Deposits and other borrowings
Deposits and other borrowings		13,273	11,945
Parent Entity
Deposits and other borrowings
Deposits and other borrowings	[1]	501,430	500,468
Parent Entity | Australia
Deposits and other borrowings
Deposits and other borrowings		475,325	475,413
Parent Entity | Australia | Certificates of deposit
Deposits and other borrowings
Deposits and other borrowings		26,259	28,746
Parent Entity | Australia | Non-interest bearing, repayable at call
Deposits and other borrowings
Deposits and other borrowings		43,341	41,783
Parent Entity | Australia | Other interest bearing at call
Deposits and other borrowings
Deposits and other borrowings		247,161	233,052
Parent Entity | Australia | Other interest bearing term
Deposits and other borrowings
Deposits and other borrowings		158,564	171,832
Parent Entity | New Zealand
Deposits and other borrowings
Deposits and other borrowings			3
Parent Entity | New Zealand | Other interest bearing term
Deposits and other borrowings
Deposits and other borrowings			3
Parent Entity | Other overseas
Deposits and other borrowings
Deposits and other borrowings		26,105	25,052
Parent Entity | Other overseas | Certificates of deposit
Deposits and other borrowings
Deposits and other borrowings		11,414	11,672
Parent Entity | Other overseas | Non-interest bearing, repayable at call
Deposits and other borrowings
Deposits and other borrowings		385	352
Parent Entity | Other overseas | Other interest bearing at call
Deposits and other borrowings
Deposits and other borrowings		1,233	1,249
Parent Entity | Other overseas | Other interest bearing term
Deposits and other borrowings
Deposits and other borrowings		$ 13,073	$ 11,779
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Deposits and other borrowings -

Deposits and other borrowings - Average balances and average rates for major categories of deposits (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Australia
Deposits and other borrowings
Average Balance	$ 468,254	$ 463,162	$ 448,941
Overseas
Deposits and other borrowings
Average Balance	87,805	83,988	80,654
Non-interest bearing, repayable at call | Australia
Deposits and other borrowings
Average Balance	42,455	41,156	39,355
Non-interest bearing, repayable at call | Overseas
Deposits and other borrowings
Average Balance	6,815	6,021	5,527
Certificates of deposit | Australia
Deposits and other borrowings
Average Balance	$ 30,367	$ 31,424	$ 33,350
Average Rate	2.00%	2.00%	2.00%
Certificates of deposit | Overseas
Deposits and other borrowings
Average Balance	$ 11,854	$ 13,008	$ 13,151
Average Rate	2.60%	1.90%	1.40%
Other interest bearing at call | Australia
Deposits and other borrowings
Average Balance	$ 237,420	$ 228,328	$ 222,122
Average Rate	1.10%	1.20%	1.10%
Other interest bearing at call | Overseas
Deposits and other borrowings
Average Balance	$ 23,616	$ 23,017	$ 24,163
Average Rate	1.10%	1.20%	1.30%
Other interest bearing term | Australia
Deposits and other borrowings
Average Balance	$ 158,012	$ 162,254	$ 154,114
Average Rate	2.40%	2.50%	2.70%
Other interest bearing term | Overseas
Deposits and other borrowings
Average Balance	$ 45,520	$ 41,942	$ 37,813
Average Rate	3.00%	2.80%	2.70%

Deposits and other borrowings_3

Deposits and other borrowings - Certificates of deposit and term deposits (Details) - Australia $ in Millions	Sep. 30, 2019AUD ($)
Deposits and other borrowings
Certificates of deposit greater than US$100,000	$ 26,259
Term deposits greater than US$100,000	138,305
Less Than 3 Months
Deposits and other borrowings
Certificates of deposit greater than US$100,000	10,522
Term deposits greater than US$100,000	82,291
Between 3 and 6 Months
Deposits and other borrowings
Certificates of deposit greater than US$100,000	542
Term deposits greater than US$100,000	28,166
Between 6 Months and 1 Year
Deposits and other borrowings
Certificates of deposit greater than US$100,000	15,159
Term deposits greater than US$100,000	21,572
Over 1 Year
Deposits and other borrowings
Certificates of deposit greater than US$100,000	36
Term deposits greater than US$100,000	$ 6,276

Other financial liabilities (De

Other financial liabilities (Details) - AUD ($) $ in Millions		Sep. 30, 2019	Sep. 30, 2018
Other financial liabilities
Repurchase agreements		$ 10,604	$ 9,522
Interbank placements		9,884	8,848
Accrued interest payable		2,627	2,968
Securities purchased not yet delivered		1,398	1,343
Trade creditors and other accrued expenses		1,154	1,410
Settlement and clearing balances		1,222	1,347
Securities sold short		766	780
Other		1,560	1,887
Total other financial liabilities	[1]	29,215	28,105
Parent Entity
Other financial liabilities
Repurchase agreements		10,604	9,522
Interbank placements		9,834	8,829
Accrued interest payable		2,312	2,633
Securities purchased not yet delivered		1,395	1,343
Trade creditors and other accrued expenses		927	1,125
Settlement and clearing balances		1,197	1,333
Securities sold short		766	780
Other		1,481	1,701
Total other financial liabilities	[1]	$ 28,516	$ 27,266
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Debt issues - Summary of balanc

Debt issues - Summary of balances (Details) - AUD ($) $ in Millions	Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2017
Debt issues
Short-term debt	$ 25,838		$ 26,266
Long-term debt	155,619		146,330
Total debt issues	181,457	[1]	172,596	[1]	$ 168,356
Own issuances
Debt issues
Short-term debt	25,838		26,266
Covered bonds
Debt issues
Long-term debt	38,037		35,434
Senior
Debt issues
Long-term debt	109,340		103,159
Securitisation
Debt issues
Long-term debt	8,190		7,588
Structured notes
Debt issues
Long-term debt	52		149
Parent Entity
Debt issues
Short-term debt	23,695		26,266
Long-term debt	132,979		126,022
Total debt issues	156,674	[1]	152,288	[1]	$ 144,116
Parent Entity | Own issuances
Debt issues
Short-term debt	23,695		26,266
Parent Entity | Covered bonds
Debt issues
Long-term debt	33,160		30,268
Parent Entity | Senior
Debt issues
Long-term debt	$ 99,819		$ 95,754
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Debt issues - Movement Reconcil

Debt issues - Movement Reconciliation (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019		Sep. 30, 2018
Movement Reconciliation
Balance at beginning		$ 172,596	[1]	$ 168,356
Issuances		61,484		59,456
Maturities, repayments, buy backs and reductions		(63,313)		(64,698)
Total cash movements		(1,829)		(5,242)
Foreign exchange translation impact		6,713		11,022
Fair value adjustments		317		(244)
Fair value hedge accounting adjustments		3,512		(1,313)
Other (amortisation of bond issue costs, etc.)		148		17
Total non-cash movements		10,690		9,482
Balance at ending	[1]	181,457		172,596
Parent Entity
Movement Reconciliation
Balance at beginning		152,288	[1]	144,116
Issuances		50,375		57,440
Maturities, repayments, buy backs and reductions		(56,347)		(58,005)
Total cash movements		(5,972)		(565)
Foreign exchange translation impact		6,514		10,252
Fair value adjustments		318		(240)
Fair value hedge accounting adjustments		3,376		(1,288)
Other (amortisation of bond issue costs, etc.)		150		13
Total non-cash movements		10,358		8,737
Balance at ending	[1]	$ 156,674		$ 152,288
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Debt issues - By currency (Deta

Debt issues - By currency (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Debt issues
Short-term debt	$ 25,838	$ 26,266
Long-term debt	155,619	146,330
AUD
Debt issues
Long-term debt	43,532	37,571
CHF
Debt issues
Long-term debt	3,480	2,953
EUR
Debt issues
Long-term debt	37,464	31,734
GBP
Debt issues
Long-term debt	5,545	5,290
JPY
Debt issues
Long-term debt	2,538	3,226
NZD
Debt issues
Long-term debt	3,197	2,294
USD
Debt issues
Long-term debt	54,490	60,336
Other currencies
Debt issues
Long-term debt	5,373	2,926
Own issuances
Debt issues
Short-term debt	25,838	26,266
US commercial paper
Debt issues
Short-term debt	19,950	18,675
Senior debt | AUD
Debt issues
Short-term debt	100	550
Senior debt | GBP
Debt issues
Short-term debt	5,366	6,604
Senior debt | Other currencies
Debt issues
Short-term debt	$ 422	$ 437

Debt issues - Short-term borrow

Debt issues - Short-term borrowings (Details) - US commercial paper - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Debt issues
Maximum amount outstanding at any month end, short-term borrowings	$ 26,879	$ 28,331	$ 27,456
Approximate average amount outstanding, short-term borrowings	$ 22,502	$ 23,315	$ 23,025
Approximate weighted average interest rate on average amount outstanding, short-term borrowings	2.80%	2.00%	1.30%
Approximate weighted average interest rate on amount outstanding as at end of the year, short-term borrowings	3.20%	2.50%	1.20%

Loan Capital - Summary (Details

Loan Capital - Summary (Details) - AUD ($) $ in Millions	Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2017
Loan capital
Loan capital	$ 21,826	[1]	$ 17,265	[1]	$ 17,666
Additional Tier 1 (AT1) loan capital
Loan capital
Loan capital	9,324		8,955
Westpac capital notes
Loan capital
Loan capital	7,411		7,370
USD AT1 securities
Loan capital
Loan capital	1,913		1,585
Tier 2 loan capital
Loan capital
Loan capital	12,502		8,310
Subordinated notes
Loan capital
Loan capital	11,981		7,822
Subordinated perpetual notes
Loan capital
Loan capital	521		488
Parent Entity
Loan capital
Loan capital	21,826	[1]	17,265	[1]	$ 17,666
Parent Entity | Additional Tier 1 (AT1) loan capital
Loan capital
Loan capital	9,324		8,955
Parent Entity | Westpac capital notes
Loan capital
Loan capital	7,411		7,370
Parent Entity | USD AT1 securities
Loan capital
Loan capital	1,913		1,585
Parent Entity | Tier 2 loan capital
Loan capital
Loan capital	12,502		8,310
Parent Entity | Subordinated notes
Loan capital
Loan capital	11,981		7,822
Parent Entity | Subordinated perpetual notes
Loan capital
Loan capital	$ 521		$ 488
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Loan Capital - Movement Reconci

Loan Capital - Movement Reconciliation (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019		Sep. 30, 2018
Loan capital
Balance at beginning		$ 17,265	[1]	$ 17,666
Issuances		4,935		2,342
Maturities, repayments, buy backs and reductions		(1,662)		(2,387)
Total cash movements		3,273		(45)
Foreign exchange translation impact		521		449
Fair value hedge accounting adjustments		748		(257)
Conversion of Convertible Preference Shares to ordinary shares				(566)
Other (amortisation of bond issue costs, etc.)		19		18
Total non-cash movements		1,288		(356)
Balance at ending	[1]	21,826		17,265
Parent Entity
Loan capital
Balance at beginning		17,265	[1]	17,666
Issuances		4,935		2,342
Maturities, repayments, buy backs and reductions		(1,662)		(2,387)
Total cash movements		3,273		(45)
Foreign exchange translation impact		521		449
Fair value hedge accounting adjustments		748		(257)
Conversion of Convertible Preference Shares to ordinary shares				(566)
Other (amortisation of bond issue costs, etc.)		19		18
Total non-cash movements		1,288		(356)
Balance at ending	[1]	$ 21,826		$ 17,265
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Loan Capital - Additional Tier

Loan Capital - Additional Tier 1 loan capital (Details) $ / shares in Units, $ in Millions, $ in Millions	Mar. 08, 2019AUD ($)$ / shares	Dec. 18, 2018AUD ($)$ / shares	Sep. 30, 2019USD ($)	Sep. 30, 2019AUD ($)		Sep. 30, 2018USD ($)	Sep. 30, 2018AUD ($)		Sep. 30, 2017AUD ($)
Loan capital
Loan capital				$ 21,826	[1]		$ 17,265	[1]	$ 17,666
Westpac capital notes
Loan capital
Loan capital				7,411			7,370
$1,384 million WCN
Loan capital
Principal amount							1,384
Loan capital							$ 1,382
Value of Westpac CPS transferred	$ 662	$ 722
Value per share of Westpac CPS transferred to nominated party | $ / shares	$ 100	$ 100
$1,384 million WCN | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)						3.20%	3.20%
$1,311 million WCN2
Loan capital
Principal amount				1,311			$ 1,311
Loan capital				$ 1,308			$ 1,305
$1,311 million WCN2 | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)			3.05%	3.05%		3.05%	3.05%
$1,324 million WCN3
Loan capital
Principal amount				$ 1,324			$ 1,324
Loan capital				$ 1,319			$ 1,316
$1,324 million WCN3 | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)			4.00%	4.00%		4.00%	4.00%
$1,702 million WCN4
Loan capital
Principal amount				$ 1,702			$ 1,702
Loan capital				$ 1,694			$ 1,691
$1,702 million WCN4 | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)			4.90%	4.90%		4.90%	4.90%
$1,690 million WCN5
Loan capital
Principal amount				$ 1,690			$ 1,690
Loan capital				$ 1,677			$ 1,676
$1,690 million WCN5 | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)			3.20%	3.20%		3.20%	3.20%
$1,423 million WCN6
Loan capital
Principal amount				$ 1,423
Loan capital				$ 1,413
$1,423 million WCN6 | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)			3.70%	3.70%
USD AT1 securities
Loan capital
Loan capital				$ 1,913			$ 1,585
US$1,250 million securities
Loan capital
Principal amount			$ 1,250			$ 1,250
Loan capital				$ 1,913			$ 1,585
US$1,250 million securities | Fixed interest rate
Loan capital
Interest rate (as a percent)			5.00%	5.00%		5.00%	5.00%
US$1,250 million securities | 5-year USD mid-market swap rate
Loan capital
Interest rate adjustments (as a percent)			2.89%	2.89%		2.89%	2.89%
Parent Entity
Loan capital
Loan capital				$ 21,826	[1]		$ 17,265	[1]	$ 17,666
Parent Entity | Westpac capital notes
Loan capital
Loan capital				7,411			7,370
Parent Entity | $1,384 million WCN
Loan capital
Principal amount							1,384
Loan capital							$ 1,382
Value of Westpac CPS transferred	$ 662	$ 722
Value per share of Westpac CPS transferred to nominated party | $ / shares	$ 100	$ 100
Parent Entity | $1,384 million WCN | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)						3.20%	3.20%
Parent Entity | $1,311 million WCN2
Loan capital
Principal amount				1,311			$ 1,311
Loan capital				$ 1,308			$ 1,305
Parent Entity | $1,311 million WCN2 | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)			3.05%	3.05%		3.05%	3.05%
Parent Entity | $1,324 million WCN3
Loan capital
Principal amount				$ 1,324			$ 1,324
Loan capital				$ 1,319			$ 1,316
Parent Entity | $1,324 million WCN3 | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)			4.00%	4.00%		4.00%	4.00%
Parent Entity | $1,702 million WCN4
Loan capital
Principal amount				$ 1,702			$ 1,702
Loan capital				$ 1,694			$ 1,691
Parent Entity | $1,702 million WCN4 | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)			4.90%	4.90%		4.90%	4.90%
Parent Entity | $1,690 million WCN5
Loan capital
Principal amount				$ 1,690			$ 1,690
Loan capital				$ 1,677			$ 1,676
Parent Entity | $1,690 million WCN5 | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)			3.20%	3.20%		3.20%	3.20%
Parent Entity | $1,423 million WCN6
Loan capital
Principal amount				$ 1,423
Loan capital				$ 1,413
Parent Entity | $1,423 million WCN6 | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)			3.70%	3.70%
Parent Entity | USD AT1 securities
Loan capital
Loan capital				$ 1,913			$ 1,585
Parent Entity | US$1,250 million securities
Loan capital
Principal amount			$ 1,250			$ 1,250
Interest rate (as a percent)			5.00%	5.00%		5.00%	5.00%
Loan capital				$ 1,913			$ 1,585
Parent Entity | US$1,250 million securities | 5-year USD mid-market swap rate
Loan capital
Interest rate adjustments (as a percent)			2.89%	2.89%		2.89%	2.89%
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Loan Capital - Additional Tie_2

Loan Capital - Additional Tier 1 loan capital - Other (Details) - Additional Tier 1 (AT1) loan capital	12 Months Ended
	Sep. 30, 2019D
Loan capital
Number of business days for payment of dividend, distribution or interest	20 days
Number of business days prior to scheduled conversion date to determine share price	20 days
Discount rate on share price upon conversion	1.00%
Common Equity Tier 1 Capital ratio, maximum	5.125%
Number of business days prior to capital trigger event date or non-viability trigger event date to determine share price for conversion	5
Discount rate on share price which determined based on capital trigger event date or non-viability trigger event date	1.00%
Percentage of share price to determine maximum conversion number	20.00%

Loan Capital - Tier 2 loan capi

Loan Capital - Tier 2 loan capital (Details) ¥ in Millions, ¥ in Millions, $ in Millions, $ in Millions, $ in Millions, $ in Millions, $ in Millions	Sep. 30, 2019SGD ($)	Sep. 30, 2019NZD ($)	Sep. 30, 2019JPY (¥)	Sep. 30, 2019HKD ($)	Sep. 30, 2019CNY (¥)	Sep. 30, 2019USD ($)	Sep. 30, 2019AUD ($)		Sep. 30, 2018SGD ($)	Sep. 30, 2018NZD ($)	Sep. 30, 2018JPY (¥)	Sep. 30, 2018HKD ($)	Sep. 30, 2018CNY (¥)	Sep. 30, 2018USD ($)	Sep. 30, 2018AUD ($)		Sep. 30, 2017AUD ($)
Loan capital
Loan capital							$ 21,826	[1]							$ 17,265	[1]	$ 17,666
Subordinated notes
Loan capital
Loan capital							11,981								7,822
A$1,000 million subordinated notes
Loan capital
Principal amount															1,000
Loan capital															$ 999
A$1,000 million subordinated notes | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)									2.05%	2.05%	2.05%	2.05%	2.05%	2.05%	2.05%
CNY1,250 million subordinated notes
Loan capital
Principal amount | ¥					¥ 1,250								¥ 1,250
Loan capital							$ 260								$ 252
CNY1,250 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.85%	4.85%	4.85%	4.85%	4.85%	4.85%	4.85%		4.85%	4.85%	4.85%	4.85%	4.85%	4.85%	4.85%
CNY1,250 million subordinated notes | One year CNH HIBOR reference rate
Loan capital
Interest rate adjustments (as a percent)	0.8345%	0.8345%	0.8345%	0.8345%	0.8345%	0.8345%	0.8345%		0.8345%	0.8345%	0.8345%	0.8345%	0.8345%	0.8345%	0.8345%
A$350 million 4.5% subordinated notes
Loan capital
Principal amount							$ 350								$ 350
Loan capital							$ 362								$ 347
A$350 million 4.5% subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.50%	4.50%	4.50%	4.50%	4.50%	4.50%	4.50%		4.50%	4.50%	4.50%	4.50%	4.50%	4.50%	4.50%
A$350 million 4.5% subordinated notes | Five year AUD semi-quarterly mid-swap reference rate
Loan capital
Interest rate adjustments (as a percent)	1.95%	1.95%	1.95%	1.95%	1.95%	1.95%	1.95%		1.95%	1.95%	1.95%	1.95%	1.95%	1.95%	1.95%
S$325 million subordinated notes
Loan capital
Principal amount	$ 325								$ 325
Loan capital							$ 356								$ 330
S$325 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.00%	4.00%	4.00%	4.00%	4.00%	4.00%	4.00%		4.00%	4.00%	4.00%	4.00%	4.00%	4.00%	4.00%
S$325 million subordinated notes | Five year SGD swap offer rate
Loan capital
Interest rate adjustments (as a percent)	1.54%	1.54%	1.54%	1.54%	1.54%	1.54%	1.54%		1.54%	1.54%	1.54%	1.54%	1.54%	1.54%	1.54%
A$175 million subordinated notes
Loan capital
Principal amount							$ 175								$ 175
Loan capital							$ 182								$ 171
A$175 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.80%	4.80%	4.80%	4.80%	4.80%	4.80%	4.80%		4.80%	4.80%	4.80%	4.80%	4.80%	4.80%	4.80%
A$175 million subordinated notes | Five year AUD semi-quarterly mid-swap reference rate
Loan capital
Interest rate adjustments (as a percent)	2.65%	2.65%	2.65%	2.65%	2.65%	2.65%	2.65%		2.65%	2.65%	2.65%	2.65%	2.65%	2.65%	2.65%
US$100 million subordinated notes
Loan capital
Principal amount						$ 100								$ 100
Loan capital							$ 161								$ 114
US$100 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%		5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%
A$700 million subordinated notes
Loan capital
Principal amount							$ 700								$ 700
Loan capital							$ 697								$ 700
A$700 million subordinated notes | Floating 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)	3.10%	3.10%	3.10%	3.10%	3.10%	3.10%	3.10%		3.10%	3.10%	3.10%	3.10%	3.10%	3.10%	3.10%
JPY20,000 million subordinated notes
Loan capital
Principal amount | ¥			¥ 20,000								¥ 20,000
Loan capital							$ 279								$ 242
JPY20,000 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%		1.16%	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%
JPY10,200 million subordinated notes
Loan capital
Principal amount | ¥			¥ 10,200								¥ 10,200
Loan capital							$ 142								$ 123
JPY10,200 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%		1.16%	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%
JPY10,000 million subordinated notes
Loan capital
Principal amount | ¥			¥ 10,000								¥ 10,000
Loan capital							$ 139								$ 120
JPY10,000 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%		0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%
NZ$400 million subordinated notes
Loan capital
Principal amount		$ 400								$ 400
Loan capital							$ 373								$ 358
NZ$400 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.695%	4.695%	4.695%	4.695%	4.695%	4.695%	4.695%		4.695%	4.695%	4.695%	4.695%	4.695%	4.695%	4.695%
NZ$400 million subordinated notes | New Zealand 5 year swap rate
Loan capital
Interest rate adjustments (as a percent)	2.60%	2.60%	2.60%	2.60%	2.60%	2.60%	2.60%		2.60%	2.60%	2.60%	2.60%	2.60%	2.60%	2.60%
JPY8,000 million subordinated notes
Loan capital
Principal amount | ¥			¥ 8,000								¥ 8,000
Loan capital							$ 110								$ 97
JPY8,000 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	0.9225%	0.9225%	0.9225%	0.9225%	0.9225%	0.9225%	0.9225%		0.9225%	0.9225%	0.9225%	0.9225%	0.9225%	0.9225%	0.9225%
JPY8,000 million subordinated notes | Five year JPY mid-swap rate
Loan capital
Interest rate adjustments (as a percent)	1.0005%	1.0005%	1.0005%	1.0005%	1.0005%	1.0005%	1.0005%		1.0005%	1.0005%	1.0005%	1.0005%	1.0005%	1.0005%	1.0005%
US$1,500 million subordinated notes
Loan capital
Principal amount						$ 1,500								$ 1,500
Loan capital							$ 2,297								$ 1,922
Principal amount of subordinated notes not subject to APRA's approval for redemption							$ 1,500
US$1,500 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.322%	4.322%	4.322%	4.322%	4.322%	4.322%	4.322%		4.322%	4.322%	4.322%	4.322%	4.322%	4.322%	4.322%
US$1,500 million subordinated notes | 5-year USD mid-market swap rate
Loan capital
Interest rate adjustments (as a percent)	2.236%	2.236%	2.236%	2.236%	2.236%	2.236%	2.236%		2.236%	2.236%	2.236%	2.236%	2.236%	2.236%	2.236%
JPY12,000 million subordinated notes
Loan capital
Principal amount | ¥			¥ 12,000								¥ 12,000
Loan capital							$ 166								$ 146
JPY12,000 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	0.87%	0.87%	0.87%	0.87%	0.87%	0.87%	0.87%		0.87%	0.87%	0.87%	0.87%	0.87%	0.87%	0.87%
JPY12,000 million subordinated notes | Five year JPY mid-swap rate
Loan capital
Interest rate adjustments (as a percent)	0.78%	0.78%	0.78%	0.78%	0.78%	0.78%	0.78%		0.78%	0.78%	0.78%	0.78%	0.78%	0.78%	0.78%
JPY13,500 million subordinated notes
Loan capital
Principal amount | ¥			¥ 13,500								¥ 13,500
Loan capital							$ 187								$ 165
JPY13,500 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	0.868%	0.868%	0.868%	0.868%	0.868%	0.868%	0.868%		0.868%	0.868%	0.868%	0.868%	0.868%	0.868%	0.868%
JPY13,500 million subordinated notes | Five year JPY mid-swap rate
Loan capital
Interest rate adjustments (as a percent)	0.778%	0.778%	0.778%	0.778%	0.778%	0.778%	0.778%		0.778%	0.778%	0.778%	0.778%	0.778%	0.778%	0.778%
HKD600 million subordinated notes
Loan capital
Principal amount				$ 600								$ 600
Loan capital							$ 114								$ 102
HKD600 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	3.15%	3.15%	3.15%	3.15%	3.15%	3.15%	3.15%		3.15%	3.15%	3.15%	3.15%	3.15%	3.15%	3.15%
HKD600 million subordinated notes | Five year HKD mid-swap rate
Loan capital
Interest rate adjustments (as a percent)	1.34%	1.34%	1.34%	1.34%	1.34%	1.34%	1.34%		1.34%	1.34%	1.34%	1.34%	1.34%	1.34%	1.34%
A$350 million 4.334% subordinated notes
Loan capital
Principal amount							$ 350								$ 350
Loan capital							$ 349								$ 347
A$350 million 4.334% subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.334%	4.334%	4.334%	4.334%	4.334%	4.334%	4.334%		4.334%	4.334%	4.334%	4.334%	4.334%	4.334%	4.334%
A$350 million 4.334% subordinated notes | Five year AUD semi-quarterly mid-swap reference rate
Loan capital
Interest rate adjustments (as a percent)	1.83%	1.83%	1.83%	1.83%	1.83%	1.83%	1.83%		1.83%	1.83%	1.83%	1.83%	1.83%	1.83%	1.83%
A$185 million subordinated notes
Loan capital
Principal amount							$ 185								$ 185
Loan capital							$ 185								$ 185
A$185 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%		5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%
A$250 million subordinated notes
Loan capital
Principal amount							$ 250								$ 250
Loan capital							$ 250								$ 250
A$250 million subordinated notes | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)	1.40%	1.40%	1.40%	1.40%	1.40%	1.40%	1.40%		1.40%	1.40%	1.40%	1.40%	1.40%	1.40%	1.40%
A$130 million subordinated notes
Loan capital
Principal amount							$ 130								$ 130
Loan capital							$ 130								$ 130
A$130 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%		5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%
A$725 million subordinated notes
Loan capital
Principal amount							$ 725								$ 725
Loan capital							$ 724								$ 722
A$725 million subordinated notes | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)	1.80%	1.80%	1.80%	1.80%	1.80%	1.80%	1.80%		1.80%	1.80%	1.80%	1.80%	1.80%	1.80%	1.80%
US$1,000 million subordinated notes
Loan capital
Principal amount						$ 1,000
Loan capital							$ 1,606
US$1,000 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.421%	4.421%	4.421%	4.421%	4.421%	4.421%	4.421%
US $1,250 million subordinated notes
Loan capital
Principal amount						$ 1,250
Loan capital							$ 1,921
Principal amount of subordinated notes not subject to APRA's approval for redemption							$ 1,250
US $1,250 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.11%	4.11%	4.11%	4.11%	4.11%	4.11%	4.11%
US $1,250 million subordinated notes | 5-year USD Treasury rate
Loan capital
Interest rate adjustments (as a percent)	2.00%	2.00%	2.00%	2.00%	2.00%	2.00%	2.00%
A$1,000 million subordinated notes
Loan capital
Principal amount							$ 1,000
Loan capital							$ 991
A$1,000 million subordinated notes | Floating 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)	1.98%	1.98%	1.98%	1.98%	1.98%	1.98%	1.98%
Parent Entity
Loan capital
Loan capital							$ 21,826	[1]							$ 17,265	[1]	$ 17,666
Parent Entity | Subordinated notes
Loan capital
Loan capital							11,981								7,822
Parent Entity | A$1,000 million subordinated notes
Loan capital
Principal amount															1,000
Loan capital															$ 999
Parent Entity | A$1,000 million subordinated notes | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)									2.05%	2.05%	2.05%	2.05%	2.05%	2.05%	2.05%
Parent Entity | CNY1,250 million subordinated notes
Loan capital
Principal amount | ¥					¥ 1,250								¥ 1,250
Loan capital							$ 260								$ 252
Parent Entity | CNY1,250 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.85%	4.85%	4.85%	4.85%	4.85%	4.85%	4.85%		4.85%	4.85%	4.85%	4.85%	4.85%	4.85%	4.85%
Parent Entity | CNY1,250 million subordinated notes | One year CNH HIBOR reference rate
Loan capital
Interest rate adjustments (as a percent)	0.8345%	0.8345%	0.8345%	0.8345%	0.8345%	0.8345%	0.8345%		0.8345%	0.8345%	0.8345%	0.8345%	0.8345%	0.8345%	0.8345%
Parent Entity | A$350 million 4.5% subordinated notes
Loan capital
Principal amount							$ 350								$ 350
Loan capital							$ 362								$ 347
Parent Entity | A$350 million 4.5% subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.50%	4.50%	4.50%	4.50%	4.50%	4.50%	4.50%		4.50%	4.50%	4.50%	4.50%	4.50%	4.50%	4.50%
Parent Entity | A$350 million 4.5% subordinated notes | Five year AUD semi-quarterly mid-swap reference rate
Loan capital
Interest rate adjustments (as a percent)	1.95%	1.95%	1.95%	1.95%	1.95%	1.95%	1.95%		1.95%	1.95%	1.95%	1.95%	1.95%	1.95%	1.95%
Parent Entity | S$325 million subordinated notes
Loan capital
Principal amount	$ 325								$ 325
Loan capital							$ 356								$ 330
Parent Entity | S$325 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.00%	4.00%	4.00%	4.00%	4.00%	4.00%	4.00%		4.00%	4.00%	4.00%	4.00%	4.00%	4.00%	4.00%
Parent Entity | S$325 million subordinated notes | Five year SGD swap offer rate
Loan capital
Interest rate adjustments (as a percent)	1.54%	1.54%	1.54%	1.54%	1.54%	1.54%	1.54%		1.54%	1.54%	1.54%	1.54%	1.54%	1.54%	1.54%
Parent Entity | A$175 million subordinated notes
Loan capital
Principal amount							$ 175								$ 175
Loan capital							$ 182								$ 171
Parent Entity | A$175 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.80%	4.80%	4.80%	4.80%	4.80%	4.80%	4.80%		4.80%	4.80%	4.80%	4.80%	4.80%	4.80%	4.80%
Parent Entity | A$175 million subordinated notes | Five year AUD semi-quarterly mid-swap reference rate
Loan capital
Interest rate adjustments (as a percent)	2.65%	2.65%	2.65%	2.65%	2.65%	2.65%	2.65%		2.65%	2.65%	2.65%	2.65%	2.65%	2.65%	2.65%
Parent Entity | US$100 million subordinated notes
Loan capital
Principal amount						$ 100								$ 100
Loan capital							$ 161								$ 114
Parent Entity | US$100 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%		5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%
Parent Entity | A$700 million subordinated notes
Loan capital
Principal amount							$ 700								$ 700
Loan capital							$ 697								$ 700
Parent Entity | A$700 million subordinated notes | Floating 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)	3.10%	3.10%	3.10%	3.10%	3.10%	3.10%	3.10%		3.10%	3.10%	3.10%	3.10%	3.10%	3.10%	3.10%
Parent Entity | JPY20,000 million subordinated notes
Loan capital
Principal amount | ¥			¥ 20,000								¥ 20,000
Loan capital							$ 279								$ 242
Parent Entity | JPY20,000 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%		1.16%	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%
Parent Entity | JPY10,200 million subordinated notes
Loan capital
Principal amount | ¥			¥ 10,200								¥ 10,200
Loan capital							$ 142								$ 123
Parent Entity | JPY10,200 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%		1.16%	1.16%	1.16%	1.16%	1.16%	1.16%	1.16%
Parent Entity | JPY10,000 million subordinated notes
Loan capital
Principal amount | ¥			¥ 10,000								¥ 10,000
Loan capital							$ 139								$ 120
Parent Entity | JPY10,000 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%		0.76%	0.76%	0.76%	0.76%	0.76%	0.76%	0.76%
Parent Entity | NZ$400 million subordinated notes
Loan capital
Principal amount		$ 400								$ 400
Loan capital							$ 373								$ 358
Parent Entity | NZ$400 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.695%	4.695%	4.695%	4.695%	4.695%	4.695%	4.695%		4.695%	4.695%	4.695%	4.695%	4.695%	4.695%	4.695%
Parent Entity | NZ$400 million subordinated notes | New Zealand 5 year swap rate
Loan capital
Interest rate adjustments (as a percent)	2.60%	2.60%	2.60%	2.60%	2.60%	2.60%	2.60%		2.60%	2.60%	2.60%	2.60%	2.60%	2.60%	2.60%
Parent Entity | JPY8,000 million subordinated notes
Loan capital
Principal amount | ¥			¥ 8,000								¥ 8,000
Loan capital							$ 110								$ 97
Parent Entity | JPY8,000 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	0.9225%	0.9225%	0.9225%	0.9225%	0.9225%	0.9225%	0.9225%		0.9225%	0.9225%	0.9225%	0.9225%	0.9225%	0.9225%	0.9225%
Parent Entity | JPY8,000 million subordinated notes | Five year JPY mid-swap rate
Loan capital
Interest rate adjustments (as a percent)	1.0005%	1.0005%	1.0005%	1.0005%	1.0005%	1.0005%	1.0005%		1.0005%	1.0005%	1.0005%	1.0005%	1.0005%	1.0005%	1.0005%
Parent Entity | US$1,500 million subordinated notes
Loan capital
Principal amount						$ 1,500								$ 1,500
Loan capital							$ 2,297								$ 1,922
Parent Entity | US$1,500 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.322%	4.322%	4.322%	4.322%	4.322%	4.322%	4.322%		4.322%	4.322%	4.322%	4.322%	4.322%	4.322%	4.322%
Parent Entity | US$1,500 million subordinated notes | 5-year USD mid-market swap rate
Loan capital
Interest rate adjustments (as a percent)	2.236%	2.236%	2.236%	2.236%	2.236%	2.236%	2.236%		2.236%	2.236%	2.236%	2.236%	2.236%	2.236%	2.236%
Parent Entity | JPY12,000 million subordinated notes
Loan capital
Principal amount | ¥			¥ 12,000								¥ 12,000
Loan capital							$ 166								$ 146
Parent Entity | JPY12,000 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	0.87%	0.87%	0.87%	0.87%	0.87%	0.87%	0.87%		0.87%	0.87%	0.87%	0.87%	0.87%	0.87%	0.87%
Parent Entity | JPY12,000 million subordinated notes | Five year JPY mid-swap rate
Loan capital
Interest rate adjustments (as a percent)	0.78%	0.78%	0.78%	0.78%	0.78%	0.78%	0.78%		0.78%	0.78%	0.78%	0.78%	0.78%	0.78%	0.78%
Parent Entity | JPY13,500 million subordinated notes
Loan capital
Principal amount | ¥			¥ 13,500								¥ 13,500
Loan capital							$ 187								$ 165
Parent Entity | JPY13,500 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	0.868%	0.868%	0.868%	0.868%	0.868%	0.868%	0.868%		0.868%	0.868%	0.868%	0.868%	0.868%	0.868%	0.868%
Parent Entity | JPY13,500 million subordinated notes | Five year JPY mid-swap rate
Loan capital
Interest rate adjustments (as a percent)	0.778%	0.778%	0.778%	0.778%	0.778%	0.778%	0.778%		0.778%	0.778%	0.778%	0.778%	0.778%	0.778%	0.778%
Parent Entity | HKD600 million subordinated notes
Loan capital
Principal amount				$ 600								$ 600
Loan capital							$ 114								$ 102
Parent Entity | HKD600 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	3.15%	3.15%	3.15%	3.15%	3.15%	3.15%	3.15%		3.15%	3.15%	3.15%	3.15%	3.15%	3.15%	3.15%
Parent Entity | HKD600 million subordinated notes | Five year HKD mid-swap rate
Loan capital
Interest rate adjustments (as a percent)	1.34%	1.34%	1.34%	1.34%	1.34%	1.34%	1.34%		1.34%	1.34%	1.34%	1.34%	1.34%	1.34%	1.34%
Parent Entity | A$350 million 4.334% subordinated notes
Loan capital
Principal amount							$ 350								$ 350
Loan capital							$ 349								$ 347
Parent Entity | A$350 million 4.334% subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.334%	4.334%	4.334%	4.334%	4.334%	4.334%	4.334%		4.334%	4.334%	4.334%	4.334%	4.334%	4.334%	4.334%
Parent Entity | A$350 million 4.334% subordinated notes | Five year AUD semi-quarterly mid-swap reference rate
Loan capital
Interest rate adjustments (as a percent)	1.83%	1.83%	1.83%	1.83%	1.83%	1.83%	1.83%		1.83%	1.83%	1.83%	1.83%	1.83%	1.83%	1.83%
Parent Entity | A$185 million subordinated notes
Loan capital
Principal amount							$ 185								$ 185
Loan capital							$ 185								$ 185
Parent Entity | A$185 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%		5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%
Parent Entity | A$250 million subordinated notes
Loan capital
Principal amount							$ 250								$ 250
Loan capital							$ 250								$ 250
Parent Entity | A$250 million subordinated notes | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)	1.40%	1.40%	1.40%	1.40%	1.40%	1.40%	1.40%		1.40%	1.40%	1.40%	1.40%	1.40%	1.40%	1.40%
Parent Entity | A$130 million subordinated notes
Loan capital
Principal amount							$ 130								$ 130
Loan capital							$ 130								$ 130
Parent Entity | A$130 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%		5.00%	5.00%	5.00%	5.00%	5.00%	5.00%	5.00%
Parent Entity | A$725 million subordinated notes
Loan capital
Principal amount							$ 725								$ 725
Loan capital							$ 724								$ 722
Parent Entity | A$725 million subordinated notes | 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)	1.80%	1.80%	1.80%	1.80%	1.80%	1.80%	1.80%		1.80%	1.80%	1.80%	1.80%	1.80%	1.80%	1.80%
Parent Entity | US$1,000 million subordinated notes
Loan capital
Principal amount						$ 1,000
Loan capital							$ 1,606
Parent Entity | US$1,000 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.421%	4.421%	4.421%	4.421%	4.421%	4.421%	4.421%
Parent Entity | US $1,250 million subordinated notes
Loan capital
Principal amount						$ 1,250
Loan capital							$ 1,921
Parent Entity | US $1,250 million subordinated notes | Fixed interest rate
Loan capital
Interest rate (as a percent)	4.11%	4.11%	4.11%	4.11%	4.11%	4.11%	4.11%
Parent Entity | US $1,250 million subordinated notes | 5-year USD Treasury rate
Loan capital
Interest rate adjustments (as a percent)	2.00%	2.00%	2.00%	2.00%	2.00%	2.00%	2.00%
Parent Entity | A$1,000 million subordinated notes
Loan capital
Principal amount							$ 1,000
Loan capital							$ 991
Parent Entity | A$1,000 million subordinated notes | Floating 90 day bank bill rate
Loan capital
Interest rate adjustments (as a percent)	1.98%	1.98%	1.98%	1.98%	1.98%	1.98%	1.98%
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Loan Capital - Tier 2 loan ca_2

Loan Capital - Tier 2 loan capital - Other (Details) - Subordinated notes	12 Months Ended
	Sep. 30, 2019
Loan capital
Percentage of share price to determine maximum conversion number	20.00%
Number of business days for immediate and irrevocable termination of rights after non-viability trigger event if conversion not occur	5 days

Loan Capital - Subordinated per

Loan Capital - Subordinated perpetual notes (Details) - Subordinated perpetual notes - 6 month US$ LIBOR	12 Months Ended
	Sep. 30, 2019
Loan capital
Interest rate adjustments (as a percent)	0.15%
Period prior to payment of dividend on share for payment of interest	12 months

Derivative financial instrume_3

Derivative financial instruments - Carrying value of derivative instruments held for trading and hedging (Details) - AUD ($) $ in Millions		Sep. 30, 2019	Sep. 30, 2018
Financial instruments
Fair Value, Trading, Assets		$ 27,070	$ 21,351
Fair Value, Trading, Liabilities		(27,945)	(22,869)
Fair Value, Hedging, Assets		2,789	2,750
Fair Value, Hedging, Liabilities		(1,151)	(1,538)
Fair Value, Total, Assets	[1]	29,859	24,101
Fair Value, Total, Liabilities	[1]	(29,096)	(24,407)
Gross Derivatives
Financial instruments
Fair Value, Trading, Assets		55,038	29,573
Fair Value, Trading, Liabilities		(56,648)	(31,781)
Fair Value, Hedging, Assets		6,426	3,255
Fair Value, Hedging, Liabilities		(7,640)	(5,515)
Fair Value, Total, Assets		61,464	32,828
Fair Value, Total, Liabilities		(64,288)	(37,296)
Interest rate contracts
Financial instruments
Fair Value, Trading, Assets		38,712	15,802
Fair Value, Trading, Liabilities		(37,390)	(15,759)
Fair Value, Hedging, Assets		4,073	890
Fair Value, Hedging, Liabilities		(7,568)	(5,301)
Fair Value, Total, Assets		42,785	16,692
Fair Value, Total, Liabilities		(44,958)	(21,060)
Interest rate contracts - Forward agreements
Financial instruments
Fair Value, Trading, Assets		35	11
Fair Value, Trading, Liabilities		(36)	(12)
Fair Value, Total, Assets		35	11
Fair Value, Total, Liabilities		(36)	(12)
Interest rate contracts - Swap agreements
Financial instruments
Fair Value, Trading, Assets		38,383	15,626
Fair Value, Trading, Liabilities		(37,051)	(15,580)
Fair Value, Hedging, Assets		4,073	890
Fair Value, Hedging, Liabilities		(7,568)	(5,301)
Fair Value, Total, Assets		42,456	16,516
Fair Value, Total, Liabilities		(44,619)	(20,881)
Interest rate contracts - Options
Financial instruments
Fair Value, Trading, Assets		294	165
Fair Value, Trading, Liabilities		(303)	(167)
Fair Value, Total, Assets		294	165
Fair Value, Total, Liabilities		(303)	(167)
Foreign exchange contracts
Financial instruments
Fair Value, Trading, Assets		15,991	13,422
Fair Value, Trading, Liabilities		(18,982)	(15,621)
Fair Value, Hedging, Assets		2,353	2,365
Fair Value, Hedging, Liabilities		(72)	(214)
Fair Value, Total, Assets		18,344	15,787
Fair Value, Total, Liabilities		(19,054)	(15,835)
Foreign exchange contracts - Spot and forward contracts
Financial instruments
Fair Value, Trading, Assets		6,857	6,741
Fair Value, Trading, Liabilities		(6,393)	(6,418)
Fair Value, Hedging, Assets		181
Fair Value, Hedging, Liabilities		(3)	(32)
Fair Value, Total, Assets		7,038	6,741
Fair Value, Total, Liabilities		(6,396)	(6,450)
Foreign exchange contracts - Cross currency swap agreements
Financial instruments
Fair Value, Trading, Assets		8,934	6,561
Fair Value, Trading, Liabilities		(12,478)	(9,019)
Fair Value, Hedging, Assets		2,172	2,365
Fair Value, Hedging, Liabilities		(69)	(182)
Fair Value, Total, Assets		11,106	8,926
Fair Value, Total, Liabilities		(12,547)	(9,201)
Foreign exchange contracts - Options
Financial instruments
Fair Value, Trading, Assets		200	120
Fair Value, Trading, Liabilities		(111)	(184)
Fair Value, Total, Assets		200	120
Fair Value, Total, Liabilities		(111)	(184)
Credit default swaps
Financial instruments
Fair Value, Trading, Assets		83	102
Fair Value, Trading, Liabilities		(88)	(101)
Fair Value, Total, Assets		83	102
Fair Value, Total, Liabilities		(88)	(101)
Credit protection bought
Financial instruments
Fair Value, Trading, Assets			3
Fair Value, Trading, Liabilities		(88)	(101)
Fair Value, Total, Assets			3
Fair Value, Total, Liabilities		(88)	(101)
Credit protection sold
Financial instruments
Fair Value, Trading, Assets		83	99
Fair Value, Total, Assets		83	99
Commodity contracts
Financial instruments
Fair Value, Trading, Assets		251	246
Fair Value, Trading, Liabilities		(187)	(300)
Fair Value, Total, Assets		251	246
Fair Value, Total, Liabilities		(187)	(300)
Equities
Financial instruments
Fair Value, Trading, Assets		1	1
Fair Value, Trading, Liabilities		(1)
Fair Value, Total, Assets		1	1
Fair Value, Total, Liabilities		(1)
Impact of netting arrangements
Financial instruments
Fair Value, Trading, Assets		(27,968)	(8,222)
Fair Value, Trading, Liabilities		28,703	8,912
Fair Value, Hedging, Assets		(3,637)	(505)
Fair Value, Hedging, Liabilities		6,489	3,977
Fair Value, Total, Assets		(31,605)	(8,727)
Fair Value, Total, Liabilities		35,192	12,889
Parent Entity
Financial instruments
Fair Value, Trading, Assets		27,306	21,381
Fair Value, Trading, Liabilities		(28,329)	(23,039)
Fair Value, Hedging, Assets		1,977	2,181
Fair Value, Hedging, Liabilities		(538)	(1,190)
Fair Value, Total, Assets	[1]	29,283	23,562
Fair Value, Total, Liabilities	[1]	(28,867)	(24,229)
Parent Entity | Gross Derivatives
Financial instruments
Fair Value, Trading, Assets		55,274	29,603
Fair Value, Trading, Liabilities		(57,032)	(31,951)
Fair Value, Hedging, Assets		5,614	2,686
Fair Value, Hedging, Liabilities		(7,027)	(5,167)
Fair Value, Total, Assets		60,888	32,289
Fair Value, Total, Liabilities		(64,059)	(37,118)
Parent Entity | Interest rate contracts
Financial instruments
Fair Value, Trading, Assets		38,818	15,835
Fair Value, Trading, Liabilities		(37,777)	(15,930)
Fair Value, Hedging, Assets		3,955	841
Fair Value, Hedging, Liabilities		(7,018)	(5,012)
Fair Value, Total, Assets		42,773	16,676
Fair Value, Total, Liabilities		(44,795)	(20,942)
Parent Entity | Interest rate contracts - Forward agreements
Financial instruments
Fair Value, Trading, Assets		35	11
Fair Value, Trading, Liabilities		(36)	(12)
Fair Value, Total, Assets		35	11
Fair Value, Total, Liabilities		(36)	(12)
Parent Entity | Interest rate contracts - Swap agreements
Financial instruments
Fair Value, Trading, Assets		38,489	15,659
Fair Value, Trading, Liabilities		(37,438)	(15,751)
Fair Value, Hedging, Assets		3,955	841
Fair Value, Hedging, Liabilities		(7,018)	(5,012)
Fair Value, Total, Assets		42,444	16,500
Fair Value, Total, Liabilities		(44,456)	(20,763)
Parent Entity | Interest rate contracts - Options
Financial instruments
Fair Value, Trading, Assets		294	165
Fair Value, Trading, Liabilities		(303)	(167)
Fair Value, Total, Assets		294	165
Fair Value, Total, Liabilities		(303)	(167)
Parent Entity | Foreign exchange contracts
Financial instruments
Fair Value, Trading, Assets		16,121	13,419
Fair Value, Trading, Liabilities		(18,979)	(15,620)
Fair Value, Hedging, Assets		1,659	1,845
Fair Value, Hedging, Liabilities		(9)	(155)
Fair Value, Total, Assets		17,780	15,264
Fair Value, Total, Liabilities		(18,988)	(15,775)
Parent Entity | Foreign exchange contracts - Spot and forward contracts
Financial instruments
Fair Value, Trading, Assets		6,987	6,737
Fair Value, Trading, Liabilities		(6,389)	(6,417)
Fair Value, Hedging, Assets		46
Fair Value, Hedging, Liabilities		(3)	(31)
Fair Value, Total, Assets		7,033	6,737
Fair Value, Total, Liabilities		(6,392)	(6,448)
Parent Entity | Foreign exchange contracts - Cross currency swap agreements
Financial instruments
Fair Value, Trading, Assets		8,934	6,562
Fair Value, Trading, Liabilities		(12,479)	(9,019)
Fair Value, Hedging, Assets		1,613	1,845
Fair Value, Hedging, Liabilities		(6)	(124)
Fair Value, Total, Assets		10,547	8,407
Fair Value, Total, Liabilities		(12,485)	(9,143)
Parent Entity | Foreign exchange contracts - Options
Financial instruments
Fair Value, Trading, Assets		200	120
Fair Value, Trading, Liabilities		(111)	(184)
Fair Value, Total, Assets		200	120
Fair Value, Total, Liabilities		(111)	(184)
Parent Entity | Credit default swaps
Financial instruments
Fair Value, Trading, Assets		83	102
Fair Value, Trading, Liabilities		(88)	(101)
Fair Value, Total, Assets		83	102
Fair Value, Total, Liabilities		(88)	(101)
Parent Entity | Credit protection bought
Financial instruments
Fair Value, Trading, Assets			3
Fair Value, Trading, Liabilities		(88)	(101)
Fair Value, Total, Assets			3
Fair Value, Total, Liabilities		(88)	(101)
Parent Entity | Credit protection sold
Financial instruments
Fair Value, Trading, Assets		83	99
Fair Value, Total, Assets		83	99
Parent Entity | Commodity contracts
Financial instruments
Fair Value, Trading, Assets		251	246
Fair Value, Trading, Liabilities		(187)	(300)
Fair Value, Total, Assets		251	246
Fair Value, Total, Liabilities		(187)	(300)
Parent Entity | Equities
Financial instruments
Fair Value, Trading, Assets		1	1
Fair Value, Trading, Liabilities		(1)
Fair Value, Total, Assets		1	1
Fair Value, Total, Liabilities		(1)
Parent Entity | Impact of netting arrangements
Financial instruments
Fair Value, Trading, Assets		(27,968)	(8,222)
Fair Value, Trading, Liabilities		28,703	8,912
Fair Value, Hedging, Assets		(3,637)	(505)
Fair Value, Hedging, Liabilities		6,489	3,977
Fair Value, Total, Assets		(31,605)	(8,727)
Fair Value, Total, Liabilities		$ 35,192	$ 12,889
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Derivative financial instrume_4

Derivative financial instruments - Hedging instruments (Details) $ in Millions	Sep. 30, 2019AUD ($)
Financial instruments
Carrying value, assets	$ 2,789
Carrying value, liabilities	$ (1,151)
One-to-one hedge relationships
Financial instruments
Nominal amounts	177,388
Carrying value, assets	$ 4,901
Carrying value, liabilities	$ (5,744)
One-to-one hedge relationships | Within 1 Year
Financial instruments
Nominal amounts	35,738
One-to-one hedge relationships | Over 1 Year to 5 Years
Financial instruments
Nominal amounts	89,963
One-to-one hedge relationships | Over 5 Years
Financial instruments
Nominal amounts	51,687
Macro hedge relationships
Financial instruments
Nominal amounts	195,641
Carrying value, assets	$ 1,525
Carrying value, liabilities	$ (1,896)
Gross Derivatives
Financial instruments
Nominal amounts	373,029
Carrying value, assets	$ 6,426
Carrying value, liabilities	$ (7,640)
Interest rate contracts - Swap agreements | Fair-value hedges | Interest rate risk
Financial instruments
Nominal amounts	126,300
Carrying value, assets	$ 2,548
Carrying value, liabilities	$ (5,672)
Interest rate contracts - Swap agreements | Fair-value hedges | Within 1 Year | Interest rate risk
Financial instruments
Nominal amounts	16,322
Interest rate contracts - Swap agreements | Fair-value hedges | Over 1 Year to 5 Years | Interest rate risk
Financial instruments
Nominal amounts	61,707
Interest rate contracts - Swap agreements | Fair-value hedges | Over 5 Years | Interest rate risk
Financial instruments
Nominal amounts	48,271
Interest rate contracts - Swap agreements | Portfolio fair value hedges | Interest rate risk
Financial instruments
Nominal amounts	18,813
Carrying value, liabilities	$ (194)
Interest rate contracts - Swap agreements | Macro cash flow hedges | Interest rate risk
Financial instruments
Nominal amounts	176,828
Carrying value, assets	$ 1,525
Carrying value, liabilities	$ (1,702)
Foreign exchange contracts - Cross currency swap agreements | Fair-value hedges | Interest rate risk
Financial instruments
Nominal amounts	20,210
Carrying value, assets	$ 584
Carrying value, liabilities	$ (69)
Foreign exchange contracts - Cross currency swap agreements | Fair-value hedges | Within 1 Year | Interest rate risk
Financial instruments
Nominal amounts	5,632
Foreign exchange contracts - Cross currency swap agreements | Fair-value hedges | Over 1 Year to 5 Years | Interest rate risk
Financial instruments
Nominal amounts	12,870
Foreign exchange contracts - Cross currency swap agreements | Fair-value hedges | Over 5 Years | Interest rate risk
Financial instruments
Nominal amounts	1,708
Foreign exchange contracts - Cross currency swap agreements | Cash-flow hedges | Foreign currency and interest rate risks
Financial instruments
Nominal amounts	22,726
Carrying value, assets	$ 1,588
Foreign exchange contracts - Cross currency swap agreements | Cash-flow hedges | Within 1 Year | Foreign currency and interest rate risks
Financial instruments
Nominal amounts	5,632
Foreign exchange contracts - Cross currency swap agreements | Cash-flow hedges | Over 1 Year to 5 Years | Foreign currency and interest rate risks
Financial instruments
Nominal amounts	15,386
Foreign exchange contracts - Cross currency swap agreements | Cash-flow hedges | Over 5 Years | Foreign currency and interest rate risks
Financial instruments
Nominal amounts	1,708
Forward contracts | Net Investment Hedging | Foreign exchange risk
Financial instruments
Nominal amounts	8,152
Carrying value, assets	$ 181
Carrying value, liabilities	$ (3)
Forward contracts | Net Investment Hedging | Within 1 Year | Foreign exchange risk
Financial instruments
Nominal amounts	8,152
Impact of netting arrangements
Financial instruments
Carrying value, assets	$ (3,637)
Carrying value, liabilities	6,489
Parent Entity
Financial instruments
Carrying value, assets	1,977
Carrying value, liabilities	$ (538)
Parent Entity | One-to-one hedge relationships
Financial instruments
Nominal amounts	150,445
Carrying value, assets	$ 4,194
Carrying value, liabilities	$ (5,484)
Parent Entity | One-to-one hedge relationships | Within 1 Year
Financial instruments
Nominal amounts	25,584
Parent Entity | One-to-one hedge relationships | Over 1 Year to 5 Years
Financial instruments
Nominal amounts	74,212
Parent Entity | One-to-one hedge relationships | Over 5 Years
Financial instruments
Nominal amounts	50,649
Parent Entity | Macro hedge relationships
Financial instruments
Nominal amounts	166,978
Carrying value, assets	$ 1,420
Carrying value, liabilities	$ (1,543)
Parent Entity | Gross Derivatives
Financial instruments
Nominal amounts	317,423
Carrying value, assets	$ 5,614
Carrying value, liabilities	$ (7,027)
Parent Entity | Interest rate contracts - Swap agreements | Fair-value hedges | Interest rate risk
Financial instruments
Nominal amounts	122,046
Carrying value, assets	$ 2,535
Carrying value, liabilities	$ (5,475)
Parent Entity | Interest rate contracts - Swap agreements | Fair-value hedges | Within 1 Year | Interest rate risk
Financial instruments
Nominal amounts	14,323
Parent Entity | Interest rate contracts - Swap agreements | Fair-value hedges | Over 1 Year to 5 Years | Interest rate risk
Financial instruments
Nominal amounts	59,842
Parent Entity | Interest rate contracts - Swap agreements | Fair-value hedges | Over 5 Years | Interest rate risk
Financial instruments
Nominal amounts	47,881
Parent Entity | Interest rate contracts - Swap agreements | Macro cash flow hedges | Interest rate risk
Financial instruments
Nominal amounts	166,978
Carrying value, assets	$ 1,420
Carrying value, liabilities	$ (1,543)
Parent Entity | Foreign exchange contracts - Cross currency swap agreements | Fair-value hedges | Interest rate risk
Financial instruments
Nominal amounts	13,042
Carrying value, assets	$ 441
Parent Entity | Foreign exchange contracts - Cross currency swap agreements | Fair-value hedges | Within 1 Year | Interest rate risk
Financial instruments
Nominal amounts	4,473
Parent Entity | Foreign exchange contracts - Cross currency swap agreements | Fair-value hedges | Over 1 Year to 5 Years | Interest rate risk
Financial instruments
Nominal amounts	7,185
Parent Entity | Foreign exchange contracts - Cross currency swap agreements | Fair-value hedges | Over 5 Years | Interest rate risk
Financial instruments
Nominal amounts	1,384
Parent Entity | Foreign exchange contracts - Cross currency swap agreements | Cash-flow hedges | Foreign exchange risk
Financial instruments
Nominal amounts	13,042
Carrying value, assets	$ 1,172
Carrying value, liabilities	$ (6)
Parent Entity | Foreign exchange contracts - Cross currency swap agreements | Cash-flow hedges | Within 1 Year | Foreign exchange risk
Financial instruments
Nominal amounts	4,473
Parent Entity | Foreign exchange contracts - Cross currency swap agreements | Cash-flow hedges | Over 1 Year to 5 Years | Foreign exchange risk
Financial instruments
Nominal amounts	7,185
Parent Entity | Foreign exchange contracts - Cross currency swap agreements | Cash-flow hedges | Over 5 Years | Foreign exchange risk
Financial instruments
Nominal amounts	1,384
Parent Entity | Forward contracts | Net Investment Hedging | Foreign currency and interest rate risks
Financial instruments
Nominal amounts	2,315
Carrying value, assets	$ 46
Carrying value, liabilities	$ (3)
Parent Entity | Forward contracts | Net Investment Hedging | Within 1 Year | Foreign currency and interest rate risks
Financial instruments
Nominal amounts	2,315
Parent Entity | Impact of netting arrangements
Financial instruments
Carrying value, assets	$ (3,637)
Carrying value, liabilities	$ 6,489

Derivative financial instrume_5

Derivative financial instruments - Weighted average interest rates in hedge relationships (Details)	12 Months Ended
	Sep. 30, 2019¥ / $¥ / $$ / $$ / $€ / $€ / $
Cash-flow hedges | Foreign exchange contracts - Cross currency swap agreements | Foreign currency and interest rate risks | EUR:AUD
Financial instruments
FX rate | € / $	0.6929
Cash-flow hedges | Foreign exchange contracts - Cross currency swap agreements | Foreign currency and interest rate risks | EUR:NZD
Financial instruments
FX rate | € / $	0.6079
Cash-flow hedges | Foreign exchange contracts - Cross currency swap agreements | Foreign currency and interest rate risks | HKD:NZD
Financial instruments
FX rate | $ / $	4.9670
Net Investment Hedging | Forward contracts | Foreign exchange risk | NZD:AUD
Financial instruments
FX rate | $ / $	1.0545
Parent Entity | Cash-flow hedges | Foreign exchange contracts - Cross currency swap agreements | Foreign currency and interest rate risks | EUR:AUD
Financial instruments
FX rate | € / $	0.6929
Parent Entity | Cash-flow hedges | Foreign exchange contracts - Cross currency swap agreements | Foreign currency and interest rate risks | JPY:AUD
Financial instruments
FX rate | ¥ / $	81.4507
Parent Entity | Cash-flow hedges | Foreign exchange contracts - Cross currency swap agreements | Foreign currency and interest rate risks | CNH:AUD
Financial instruments
FX rate | ¥ / $	4.9328
Parent Entity | Net Investment Hedging | Forward contracts | Foreign exchange risk | NZD:AUD
Financial instruments
FX rate | $ / $	1.0546

Derivative financial instrume_6

Derivative financial instruments - Impact of hedge accounting on balance sheet and reserves (Details) - Fair-value hedges $ in Millions	Sep. 30, 2019AUD ($)
Derivative financial instruments
Accumulated fair value hedge adjustments included in carrying amounts relating to hedged items that have ceased to be adjusted for hedging gains and losses, assets	$ 0
Accumulated fair value hedge adjustments included in carrying amounts relating to hedged items that have ceased to be adjusted for hedging gains and losses, liabilities	0
Debt issues and loan capital
Derivative financial instruments
Carrying value of hedged item, liabilities	(100,909)
Accumulated fair value hedge adjustment included in carrying amount, liabilities	(2,818)
Investment securities
Derivative financial instruments
Carrying value of hedged item, assets	53,273
Accumulated fair value hedge adjustment included in carrying amount, assets	2,815
Loans
Derivative financial instruments
Carrying value of hedged item, assets	19,235
Accumulated fair value hedge adjustment included in carrying amount, assets	133
Parent Entity | Debt issues and loan capital
Derivative financial instruments
Carrying value of hedged item, liabilities	(93,296)
Accumulated fair value hedge adjustment included in carrying amount, liabilities	(2,661)
Parent Entity | Investment securities
Derivative financial instruments
Carrying value of hedged item, assets	49,132
Accumulated fair value hedge adjustment included in carrying amount, assets	2,704
Parent Entity | Loans
Derivative financial instruments
Carrying value of hedged item, assets	421
Accumulated fair value hedge adjustment included in carrying amount, assets	$ 5

Derivative financial instrume_7

Derivative financial instruments - Pre-tax impact of cash flow and net investment hedges on reserves (Details) $ in Millions	12 Months Ended
	Sep. 30, 2019AUD ($)
Derivative financial instruments
Balances in cash flow hedge reserve relating to hedge relationships for which hedge accounting is no longer applied	$ 0
Net gains or losses from changes in fair value of net investment hedges in USD operations	(129)
Loss relating to discontinued hedges	(210)
Cash Flow and Net Investment Hedges
Derivative financial instruments
Opening balance	(176)
Net gains/(losses) from changes in fair value	(203)
Transferred to interest income	197
Closing balance	(182)
Cash Flow and Net Investment Hedges | Interest rate risk
Derivative financial instruments
Opening balance	(87)
Net gains/(losses) from changes in fair value	(158)
Transferred to interest income	146
Closing balance	(99)
Cash Flow and Net Investment Hedges | Foreign currency and interest rate risks
Derivative financial instruments
Opening balance	(89)
Net gains/(losses) from changes in fair value	(45)
Transferred to interest income	51
Closing balance	(83)
Parent Entity
Derivative financial instruments
Net gains or losses from changes in fair value of net investment hedges in USD operations	52
Loss relating to discontinued hedges	(214)
Parent Entity | Cash Flow and Net Investment Hedges
Derivative financial instruments
Opening balance	(99)
Net gains/(losses) from changes in fair value	(121)
Transferred to interest income	128
Closing balance	(92)
Parent Entity | Cash Flow and Net Investment Hedges | Interest rate risk
Derivative financial instruments
Opening balance	(42)
Net gains/(losses) from changes in fair value	(130)
Transferred to interest income	102
Closing balance	(70)
Parent Entity | Cash Flow and Net Investment Hedges | Foreign currency and interest rate risks
Derivative financial instruments
Opening balance	(57)
Net gains/(losses) from changes in fair value	9
Transferred to interest income	26
Closing balance	$ (22)

Derivative financial instrume_8

Derivative financial instruments - Determination of hedge effectiveness (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	$ 1,595
Change in value of the hedged item used for calculating ineffectiveness	(1,567)
Hedge ineffectiveness recognised in interest income	28
Fair-value hedges
Disclosure of detailed information about hedged items [line items]
Change in fair value hedging instruments		$ (1,203)
Change in fair value hedge items attributed to hedged risk		1,192
Hedge ineffectiveness recognised in interest income		(11)
Cash-flow hedges
Disclosure of detailed information about hedged items [line items]
Hedge ineffectiveness recognised in interest income		(7)
Interest rate risk | Fair-value hedges | Interest rate contracts - Swap agreements
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	1,532
Change in value of the hedged item used for calculating ineffectiveness	(1,512)
Hedge ineffectiveness recognised in interest income	20
Interest rate risk | Fair-value hedges | Foreign exchange contracts - Cross currency swap agreements
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	192
Change in value of the hedged item used for calculating ineffectiveness	(190)
Hedge ineffectiveness recognised in interest income	2
Interest rate risk | Cash-flow hedges | Interest rate contracts - Swap agreements
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	(6)
Change in value of the hedged item used for calculating ineffectiveness	12
Hedge ineffectiveness recognised in interest income	6
Foreign currency and interest rate risks | Cash-flow hedges | Foreign exchange contracts - Cross currency swap agreements
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	6
Change in value of the hedged item used for calculating ineffectiveness	(6)
Foreign exchange risk | Net Investment Hedging | Forward contracts
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	(129)
Change in value of the hedged item used for calculating ineffectiveness	129
Parent Entity
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	1,702
Change in value of the hedged item used for calculating ineffectiveness	(1,676)
Hedge ineffectiveness recognised in interest income	26
Parent Entity | Fair-value hedges
Disclosure of detailed information about hedged items [line items]
Change in fair value hedging instruments		(1,208)
Change in fair value hedge items attributed to hedged risk		1,197
Hedge ineffectiveness recognised in interest income		(11)
Parent Entity | Cash-flow hedges
Disclosure of detailed information about hedged items [line items]
Hedge ineffectiveness recognised in interest income		$ (11)
Parent Entity | Interest rate risk | Fair-value hedges | Interest rate contracts - Swap agreements
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	1,684
Change in value of the hedged item used for calculating ineffectiveness	(1,664)
Hedge ineffectiveness recognised in interest income	20
Parent Entity | Interest rate risk | Fair-value hedges | Foreign exchange contracts - Cross currency swap agreements
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	56
Change in value of the hedged item used for calculating ineffectiveness	(57)
Hedge ineffectiveness recognised in interest income	(1)
Parent Entity | Interest rate risk | Cash-flow hedges | Interest rate contracts - Swap agreements
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	(21)
Change in value of the hedged item used for calculating ineffectiveness	28
Hedge ineffectiveness recognised in interest income	7
Parent Entity | Foreign currency and interest rate risks | Cash-flow hedges | Foreign exchange contracts - Cross currency swap agreements
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	35
Change in value of the hedged item used for calculating ineffectiveness	(35)
Parent Entity | Foreign exchange risk | Net Investment Hedging | Forward contracts
Disclosure of detailed information about hedged items [line items]
Change in fair value of hedging instrument used for calculating	(52)
Change in value of the hedged item used for calculating ineffectiveness	$ 52

Derivative financial instrume_9

Derivative financial instruments - AASB 7 disclosure requirements and net investment hedges (Details) $ in Millions	12 Months Ended
	Sep. 30, 2018AUD ($)
Derivative financial instruments
Ineffectiveness of net investment in foreign operations	$ 0
Less than or Up to 1 Month
Derivative financial instruments
Cash inflows	0.30%
Cash outflows	0.50%
Over 1 Month to 3 Months
Derivative financial instruments
Cash inflows	2.10%
Cash outflows	1.80%
Over 3 Months to 1 Year
Derivative financial instruments
Cash inflows	21.80%
Cash outflows	22.40%
1 Year to 2 Years
Derivative financial instruments
Cash inflows	23.80%
Cash outflows	23.00%
2 Years to 3 Years
Derivative financial instruments
Cash inflows	18.90%
Cash outflows	19.50%
3 Years to 4 Years
Derivative financial instruments
Cash inflows	19.10%
Cash outflows	18.00%
4 Years to 5 Years
Derivative financial instruments
Cash inflows	4.70%
Cash outflows	4.90%
Over 5 Years
Derivative financial instruments
Cash inflows	9.30%
Cash outflows	9.90%
Parent Entity
Derivative financial instruments
Ineffectiveness of net investment in foreign operations	$ 0

Financial risk - Credit risk (D

Financial risk - Credit risk (Details)	Sep. 30, 2019	Sep. 30, 2018
Trading securities and financial assets measured at FVIS
Fair value related to credit risk
Financial assets issued by financial institutions (as a percent)	45.00%	41.00%
Financial assets issued by government or semi-government authorities (as a percent)	51.00%	55.00%
Financial assets held in Australia (as a percent)	71.00%	73.00%
Available-for-sale securities
Fair value related to credit risk
Financial assets issued by financial institutions (as a percent)	24.00%	27.00%
Financial assets issued by government or semi-government authorities (as a percent)	75.00%	73.00%
Financial assets held in Australia (as a percent)	90.00%	89.00%
Derivative financial instruments
Fair value related to credit risk
Financial assets issued by financial institutions (as a percent)	72.00%	79.00%
Financial assets held in Australia (as a percent)	78.00%	84.00%
Parent Entity | Trading securities and financial assets measured at FVIS
Fair value related to credit risk
Financial assets issued by financial institutions (as a percent)	44.00%	40.00%
Financial assets issued by government or semi-government authorities (as a percent)	52.00%	56.00%
Financial assets held in Australia (as a percent)	75.00%	76.00%
Parent Entity | Available-for-sale securities
Fair value related to credit risk
Financial assets issued by financial institutions (as a percent)	25.00%	28.00%
Financial assets issued by government or semi-government authorities (as a percent)	75.00%	72.00%
Financial assets held in Australia (as a percent)	97.00%	96.00%
Parent Entity | Derivative financial instruments
Fair value related to credit risk
Financial assets issued by financial institutions (as a percent)	72.00%	79.00%
Financial assets held in Australia (as a percent)	80.00%	86.00%

Financial risk - Credit risk by

Financial risk - Credit risk by industry (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Financial risk
Undrawn credit commitments	$ 191,340	$ 190,397
Credit risk
Financial risk
Total on balance sheet	884,300	857,295
Undrawn credit commitments	191,340	190,397
Total gross credit risk	1,075,640	1,047,692
Australia | Credit risk
Financial risk
Total on balance sheet	752,564	731,890
Undrawn credit commitments	151,773	152,092
Total gross credit risk	904,337	883,982
New Zealand | Credit risk
Financial risk
Total on balance sheet	95,791	85,728
Undrawn credit commitments	23,075	22,855
Total gross credit risk	118,866	108,583
Other overseas | Credit risk
Financial risk
Total on balance sheet	35,945	39,677
Undrawn credit commitments	16,492	15,450
Total gross credit risk	52,437	55,127
Accommodation, cafes and restaurants | Australia | Credit risk
Financial risk
Total on balance sheet	8,061	8,316
Undrawn credit commitments	1,070	1,404
Total gross credit risk	9,131	9,720
Accommodation, cafes and restaurants | New Zealand | Credit risk
Financial risk
Total on balance sheet	356	324
Undrawn credit commitments	36	39
Total gross credit risk	392	363
Accommodation, cafes and restaurants | Other overseas | Credit risk
Financial risk
Total on balance sheet	109	112
Undrawn credit commitments	11	12
Total gross credit risk	120	124
Agriculture, forestry and fishing | Australia | Credit risk
Financial risk
Total on balance sheet	9,250	8,662
Undrawn credit commitments	2,014	2,035
Total gross credit risk	11,264	10,697
Agriculture, forestry and fishing | New Zealand | Credit risk
Financial risk
Total on balance sheet	8,631	8,205
Undrawn credit commitments	607	684
Total gross credit risk	9,238	8,889
Agriculture, forestry and fishing | Other overseas | Credit risk
Financial risk
Total on balance sheet	150	19
Undrawn credit commitments	3	1
Total gross credit risk	153	20
Construction | Australia | Credit risk
Financial risk
Total on balance sheet	7,229	6,764
Undrawn credit commitments	3,340	3,324
Total gross credit risk	10,569	10,088
Construction | New Zealand | Credit risk
Financial risk
Total on balance sheet	503	505
Undrawn credit commitments	350	429
Total gross credit risk	853	934
Construction | Other overseas | Credit risk
Financial risk
Total on balance sheet	55	71
Undrawn credit commitments	127	121
Total gross credit risk	182	192
Finance and insurance | Australia | Credit risk
Financial risk
Total on balance sheet	73,052	68,002
Undrawn credit commitments	7,316	7,781
Total gross credit risk	80,368	75,783
Finance and insurance | New Zealand | Credit risk
Financial risk
Total on balance sheet	11,685	8,368
Undrawn credit commitments	1,507	1,437
Total gross credit risk	13,192	9,805
Finance and insurance | Other overseas | Credit risk
Financial risk
Total on balance sheet	17,712	23,739
Undrawn credit commitments	3,093	3,454
Total gross credit risk	20,805	27,193
Government, administration and defence | Australia | Credit risk
Financial risk
Total on balance sheet	63,582	50,757
Undrawn credit commitments	1,766	728
Total gross credit risk	65,348	51,485
Government, administration and defence | New Zealand | Credit risk
Financial risk
Total on balance sheet	6,667	4,867
Undrawn credit commitments	856	691
Total gross credit risk	7,523	5,558
Government, administration and defence | Other overseas | Credit risk
Financial risk
Total on balance sheet	5,646	4,252
Undrawn credit commitments	23	50
Total gross credit risk	5,669	4,302
Manufacturing | Australia | Credit risk
Financial risk
Total on balance sheet	10,504	9,979
Undrawn credit commitments	5,850	5,738
Total gross credit risk	16,354	15,717
Manufacturing | New Zealand | Credit risk
Financial risk
Total on balance sheet	2,079	2,312
Undrawn credit commitments	1,758	1,577
Total gross credit risk	3,837	3,889
Manufacturing | Other overseas | Credit risk
Financial risk
Total on balance sheet	3,830	3,372
Undrawn credit commitments	5,329	4,849
Total gross credit risk	9,159	8,221
Mining | Australia | Credit risk
Financial risk
Total on balance sheet	3,325	3,641
Undrawn credit commitments	3,802	3,079
Total gross credit risk	7,127	6,720
Mining | New Zealand | Credit risk
Financial risk
Total on balance sheet	289	213
Undrawn credit commitments	29	101
Total gross credit risk	318	314
Mining | Other overseas | Credit risk
Financial risk
Total on balance sheet	500	354
Undrawn credit commitments	1,872	1,793
Total gross credit risk	2,372	2,147
Property | Australia | Credit risk
Financial risk
Total on balance sheet	45,467	45,871
Undrawn credit commitments	10,119	12,309
Total gross credit risk	55,586	58,180
Property | New Zealand | Credit risk
Financial risk
Total on balance sheet	6,977	6,252
Undrawn credit commitments	1,120	1,035
Total gross credit risk	8,097	7,287
Property | Other overseas | Credit risk
Financial risk
Total on balance sheet	493	468
Undrawn credit commitments	29	57
Total gross credit risk	522	525
Property services and business services | Australia | Credit risk
Financial risk
Total on balance sheet	14,191	13,577
Undrawn credit commitments	5,898	5,596
Total gross credit risk	20,089	19,173
Property services and business services | New Zealand | Credit risk
Financial risk
Total on balance sheet	1,300	1,110
Undrawn credit commitments	557	512
Total gross credit risk	1,857	1,622
Property services and business services | Other overseas | Credit risk
Financial risk
Total on balance sheet	1,766	1,758
Undrawn credit commitments	863	733
Total gross credit risk	2,629	2,491
Services | Australia | Credit risk
Financial risk
Total on balance sheet	12,340	12,312
Undrawn credit commitments	6,523	5,700
Total gross credit risk	18,863	18,012
Services | New Zealand | Credit risk
Financial risk
Total on balance sheet	2,023	1,762
Undrawn credit commitments	577	613
Total gross credit risk	2,600	2,375
Services | Other overseas | Credit risk
Financial risk
Total on balance sheet	244	207
Undrawn credit commitments	637	448
Total gross credit risk	881	655
Trade | Australia | Credit risk
Financial risk
Total on balance sheet	16,593	16,866
Undrawn credit commitments	7,677	7,951
Total gross credit risk	24,270	24,817
Trade | New Zealand | Credit risk
Financial risk
Total on balance sheet	2,441	2,573
Undrawn credit commitments	1,259	1,023
Total gross credit risk	3,700	3,596
Trade | Other overseas | Credit risk
Financial risk
Total on balance sheet	2,318	2,323
Undrawn credit commitments	2,859	3,330
Total gross credit risk	5,177	5,653
Transport and storage | Australia | Credit risk
Financial risk
Total on balance sheet	9,529	9,599
Undrawn credit commitments	5,114	4,958
Total gross credit risk	14,643	14,557
Transport and storage | New Zealand | Credit risk
Financial risk
Total on balance sheet	1,209	1,105
Undrawn credit commitments	755	791
Total gross credit risk	1,964	1,896
Transport and storage | Other overseas | Credit risk
Financial risk
Total on balance sheet	999	1,235
Undrawn credit commitments	652	222
Total gross credit risk	1,651	1,457
Utilities | Australia | Credit risk
Financial risk
Total on balance sheet	5,567	5,291
Undrawn credit commitments	4,487	3,471
Total gross credit risk	10,054	8,762
Utilities | New Zealand | Credit risk
Financial risk
Total on balance sheet	1,938	1,418
Undrawn credit commitments	1,447	1,564
Total gross credit risk	3,385	2,982
Utilities | Other overseas | Credit risk
Financial risk
Total on balance sheet	1,088	765
Undrawn credit commitments	931	329
Total gross credit risk	2,019	1,094
Retail lending | Australia | Credit risk
Financial risk
Total on balance sheet	467,206	464,329
Undrawn credit commitments	84,057	86,421
Total gross credit risk	551,263	550,750
Retail lending | New Zealand | Credit risk
Financial risk
Total on balance sheet	49,542	46,700
Undrawn credit commitments	12,056	12,114
Total gross credit risk	61,598	58,814
Retail lending | Other overseas | Credit risk
Financial risk
Total on balance sheet	864	684
Undrawn credit commitments	37	45
Total gross credit risk	901	729
Other | Australia | Credit risk
Financial risk
Total on balance sheet	6,668	7,924
Undrawn credit commitments	2,740	1,597
Total gross credit risk	9,408	9,521
Other | New Zealand | Credit risk
Financial risk
Total on balance sheet	151	14
Undrawn credit commitments	161	245
Total gross credit risk	312	259
Other | Other overseas | Credit risk
Financial risk
Total on balance sheet	171	318
Undrawn credit commitments	26	6
Total gross credit risk	197	324
Parent Entity
Financial risk
Undrawn credit commitments	168,487	167,999
Parent Entity | Credit risk
Financial risk
Total on balance sheet	925,031	902,377
Undrawn credit commitments	168,487	167,999
Total gross credit risk	1,093,518	1,070,376
Parent Entity | Australia | Credit risk
Financial risk
Total on balance sheet	833,566	815,055
Undrawn credit commitments	151,773	152,064
Total gross credit risk	985,339	967,119
Parent Entity | New Zealand | Credit risk
Financial risk
Total on balance sheet	14,786	10,314
Undrawn credit commitments	559	776
Total gross credit risk	15,345	11,090
Parent Entity | Other overseas | Credit risk
Financial risk
Total on balance sheet	76,679	77,008
Undrawn credit commitments	16,155	15,159
Total gross credit risk	92,834	92,167
Parent Entity | Accommodation, cafes and restaurants | Australia | Credit risk
Financial risk
Total on balance sheet	7,989	8,247
Undrawn credit commitments	1,070	1,404
Total gross credit risk	9,059	9,651
Parent Entity | Accommodation, cafes and restaurants | Other overseas | Credit risk
Financial risk
Total on balance sheet	67	70
Undrawn credit commitments	10	12
Total gross credit risk	77	82
Parent Entity | Agriculture, forestry and fishing | Australia | Credit risk
Financial risk
Total on balance sheet	9,191	8,604
Undrawn credit commitments	2,014	2,035
Total gross credit risk	11,205	10,639
Parent Entity | Agriculture, forestry and fishing | New Zealand | Credit risk
Financial risk
Total on balance sheet	67	52
Undrawn credit commitments	7	7
Total gross credit risk	74	59
Parent Entity | Agriculture, forestry and fishing | Other overseas | Credit risk
Financial risk
Total on balance sheet	130	4
Undrawn credit commitments	1	1
Total gross credit risk	131	5
Parent Entity | Construction | Australia | Credit risk
Financial risk
Total on balance sheet	6,853	6,260
Undrawn credit commitments	3,340	3,324
Total gross credit risk	10,193	9,584
Parent Entity | Construction | New Zealand | Credit risk
Financial risk
Total on balance sheet	17	7
Undrawn credit commitments	16	22
Total gross credit risk	33	29
Parent Entity | Construction | Other overseas | Credit risk
Financial risk
Total on balance sheet	47	59
Undrawn credit commitments	125	113
Total gross credit risk	172	172
Parent Entity | Finance and insurance | Australia | Credit risk
Financial risk
Total on balance sheet	158,418	156,489
Undrawn credit commitments	7,316	7,781
Total gross credit risk	165,734	164,270
Parent Entity | Finance and insurance | New Zealand | Credit risk
Financial risk
Total on balance sheet	10,938	8,103
Undrawn credit commitments	116	50
Total gross credit risk	11,054	8,153
Parent Entity | Finance and insurance | Other overseas | Credit risk
Financial risk
Total on balance sheet	60,388	63,043
Undrawn credit commitments	3,067	3,442
Total gross credit risk	63,455	66,485
Parent Entity | Government, administration and defence | Australia | Credit risk
Financial risk
Total on balance sheet	63,599	50,745
Undrawn credit commitments	1,766	728
Total gross credit risk	65,365	51,473
Parent Entity | Government, administration and defence | New Zealand | Credit risk
Financial risk
Total on balance sheet	2,196	1,039
Undrawn credit commitments	8	29
Total gross credit risk	2,204	1,068
Parent Entity | Government, administration and defence | Other overseas | Credit risk
Financial risk
Total on balance sheet	4,815	3,475
Undrawn credit commitments	23	50
Total gross credit risk	4,838	3,525
Parent Entity | Manufacturing | Australia | Credit risk
Financial risk
Total on balance sheet	10,322	9,754
Undrawn credit commitments	5,850	5,738
Total gross credit risk	16,172	15,492
Parent Entity | Manufacturing | New Zealand | Credit risk
Financial risk
Total on balance sheet	259	209
Undrawn credit commitments	69	97
Total gross credit risk	328	306
Parent Entity | Manufacturing | Other overseas | Credit risk
Financial risk
Total on balance sheet	3,822	3,367
Undrawn credit commitments	5,269	4,741
Total gross credit risk	9,091	8,108
Parent Entity | Mining | Australia | Credit risk
Financial risk
Total on balance sheet	3,304	3,609
Undrawn credit commitments	3,802	3,078
Total gross credit risk	7,106	6,687
Parent Entity | Mining | New Zealand | Credit risk
Financial risk
Total on balance sheet	11	7
Undrawn credit commitments		1
Total gross credit risk	11	8
Parent Entity | Mining | Other overseas | Credit risk
Financial risk
Total on balance sheet	497	355
Undrawn credit commitments	1,869	1,791
Total gross credit risk	2,366	2,146
Parent Entity | Property | Australia | Credit risk
Financial risk
Total on balance sheet	45,405	45,869
Undrawn credit commitments	10,119	12,309
Total gross credit risk	55,524	58,178
Parent Entity | Property | New Zealand | Credit risk
Financial risk
Total on balance sheet	117	52
Undrawn credit commitments	3	8
Total gross credit risk	120	60
Parent Entity | Property | Other overseas | Credit risk
Financial risk
Total on balance sheet	227	235
Undrawn credit commitments	13	31
Total gross credit risk	240	266
Parent Entity | Property services and business services | Australia | Credit risk
Financial risk
Total on balance sheet	13,348	12,533
Undrawn credit commitments	5,898	5,595
Total gross credit risk	19,246	18,128
Parent Entity | Property services and business services | New Zealand | Credit risk
Financial risk
Total on balance sheet	123	43
Undrawn credit commitments	18	31
Total gross credit risk	141	74
Parent Entity | Property services and business services | Other overseas | Credit risk
Financial risk
Total on balance sheet	1,683	1,668
Undrawn credit commitments	862	730
Total gross credit risk	2,545	2,398
Parent Entity | Services | Australia | Credit risk
Financial risk
Total on balance sheet	12,094	12,044
Undrawn credit commitments	6,523	5,700
Total gross credit risk	18,617	17,744
Parent Entity | Services | New Zealand | Credit risk
Financial risk
Total on balance sheet	46	25
Undrawn credit commitments	1	44
Total gross credit risk	47	69
Parent Entity | Services | Other overseas | Credit risk
Financial risk
Total on balance sheet	216	188
Undrawn credit commitments	634	445
Total gross credit risk	850	633
Parent Entity | Trade | Australia | Credit risk
Financial risk
Total on balance sheet	16,408	16,655
Undrawn credit commitments	7,677	7,949
Total gross credit risk	24,085	24,604
Parent Entity | Trade | New Zealand | Credit risk
Financial risk
Total on balance sheet	392	324
Undrawn credit commitments	170	234
Total gross credit risk	562	558
Parent Entity | Trade | Other overseas | Credit risk
Financial risk
Total on balance sheet	2,140	2,137
Undrawn credit commitments	2,688	3,216
Total gross credit risk	4,828	5,353
Parent Entity | Transport and storage | Australia | Credit risk
Financial risk
Total on balance sheet	9,221	9,202
Undrawn credit commitments	5,114	4,957
Total gross credit risk	14,335	14,159
Parent Entity | Transport and storage | New Zealand | Credit risk
Financial risk
Total on balance sheet	76	77
Undrawn credit commitments	64	87
Total gross credit risk	140	164
Parent Entity | Transport and storage | Other overseas | Credit risk
Financial risk
Total on balance sheet	888	1,129
Undrawn credit commitments	643	214
Total gross credit risk	1,531	1,343
Parent Entity | Utilities | Australia | Credit risk
Financial risk
Total on balance sheet	5,542	5,265
Undrawn credit commitments	4,487	3,471
Total gross credit risk	10,029	8,736
Parent Entity | Utilities | New Zealand | Credit risk
Financial risk
Total on balance sheet	507	374
Undrawn credit commitments	73	146
Total gross credit risk	580	520
Parent Entity | Utilities | Other overseas | Credit risk
Financial risk
Total on balance sheet	1,038	763
Undrawn credit commitments	905	329
Total gross credit risk	1,943	1,092
Parent Entity | Retail lending | Australia | Credit risk
Financial risk
Total on balance sheet	466,188	463,280
Undrawn credit commitments	84,057	86,421
Total gross credit risk	550,245	549,701
Parent Entity | Retail lending | New Zealand | Credit risk
Financial risk
Total on balance sheet		1
Undrawn credit commitments	13	19
Total gross credit risk	13	20
Parent Entity | Retail lending | Other overseas | Credit risk
Financial risk
Total on balance sheet	588	277
Undrawn credit commitments	32	40
Total gross credit risk	620	317
Parent Entity | Other | Australia | Credit risk
Financial risk
Total on balance sheet	5,684	6,499
Undrawn credit commitments	2,740	1,574
Total gross credit risk	8,424	8,073
Parent Entity | Other | New Zealand | Credit risk
Financial risk
Total on balance sheet	37	1
Undrawn credit commitments	1	1
Total gross credit risk	38	2
Parent Entity | Other | Other overseas | Credit risk
Financial risk
Total on balance sheet	133	238
Undrawn credit commitments	14	4
Total gross credit risk	$ 147	$ 242

Financial risk - Credit quality

Financial risk - Credit quality of financial assets (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Financial risk
Undrawn credit commitments	$ 191,340	$ 190,397
Credit risk
Financial risk
Undrawn credit commitments	191,340	190,397
Credit risk | Loans - business | Gross amount | Neither past due nor impaired | Strong | Reported
Financial risk
Financial assets		90,408
Credit risk | Loans - business | Gross amount | Neither past due nor impaired | Good/Satisfactory | Reported
Financial risk
Financial assets		97,369
AASB 9 | Credit risk
Financial risk
Undrawn credit commitments	191,340
Total on and off balance sheet	1,014,350
AASB 9 | Credit risk | Strong
Financial risk
Undrawn credit commitments	148,853
Total on and off balance sheet	716,837
AASB 9 | Credit risk | Good/Satisfactory
Financial risk
Undrawn credit commitments	41,076
Total on and off balance sheet	267,236
AASB 9 | Credit risk | Weak
Financial risk
Undrawn credit commitments	1,411
Total on and off balance sheet	30,277
AASB 9 | Credit risk | Housing
Financial risk
Financial assets	497,542
AASB 9 | Credit risk | Housing | Strong
Financial risk
Financial assets	382,862
AASB 9 | Credit risk | Housing | Good/Satisfactory
Financial risk
Financial assets	95,397
AASB 9 | Credit risk | Housing | Weak
Financial risk
Financial assets	19,283
AASB 9 | Credit risk | Personal
Financial risk
Financial assets	22,973
AASB 9 | Credit risk | Personal | Strong
Financial risk
Financial assets	5,696
AASB 9 | Credit risk | Personal | Good/Satisfactory
Financial risk
Financial assets	15,493
AASB 9 | Credit risk | Personal | Weak
Financial risk
Financial assets	1,784
AASB 9 | Credit risk | Loans - business
Financial risk
Financial assets	197,863
AASB 9 | Credit risk | Loans - business | Strong
Financial risk
Financial assets	75,990
AASB 9 | Credit risk | Loans - business | Good/Satisfactory
Financial risk
Financial assets	114,122
AASB 9 | Credit risk | Loans - business | Weak
Financial risk
Financial assets	7,751
AASB 9 | Credit risk | Debt securities measured at FVOCI
Financial risk
Financial assets	73,276
AASB 9 | Credit risk | Debt securities measured at FVOCI | Strong
Financial risk
Financial assets	72,813
AASB 9 | Credit risk | Debt securities measured at FVOCI | Good/Satisfactory
Financial risk
Financial assets	463
AASB 9 | Credit risk | Debt securities measured at amortised cost
Financial risk
Financial assets	829
AASB 9 | Credit risk | Debt securities measured at amortised cost | Strong
Financial risk
Financial assets	366
AASB 9 | Credit risk | Other financial assets
Financial risk
Financial assets	31,356
AASB 9 | Credit risk | Other financial assets | Strong
Financial risk
Financial assets	30,623
AASB 9 | Credit risk | Other financial assets | Good/Satisfactory
Financial risk
Financial assets	685
AASB 9 | Credit risk | Other financial assets | Weak
Financial risk
Financial assets	48
AASB 9 | Performing - Stage 1 | Credit risk
Financial risk
Undrawn credit commitments	188,449
Total on and off balance sheet	970,015
AASB 9 | Performing - Stage 1 | Credit risk | Strong
Financial risk
Undrawn credit commitments	148,525
Total on and off balance sheet	715,532
AASB 9 | Performing - Stage 1 | Credit risk | Good/Satisfactory
Financial risk
Undrawn credit commitments	39,782
Total on and off balance sheet	249,080
AASB 9 | Performing - Stage 1 | Credit risk | Weak
Financial risk
Undrawn credit commitments	142
Total on and off balance sheet	5,403
AASB 9 | Performing - Stage 1 | Credit risk | Housing
Financial risk
Financial assets	470,391
AASB 9 | Performing - Stage 1 | Credit risk | Housing | Strong
Financial risk
Financial assets	382,119
AASB 9 | Performing - Stage 1 | Credit risk | Housing | Good/Satisfactory
Financial risk
Financial assets	84,071
AASB 9 | Performing - Stage 1 | Credit risk | Housing | Weak
Financial risk
Financial assets	4,201
AASB 9 | Performing - Stage 1 | Credit risk | Personal
Financial risk
Financial assets	20,805
AASB 9 | Performing - Stage 1 | Credit risk | Personal | Strong
Financial risk
Financial assets	5,694
AASB 9 | Performing - Stage 1 | Credit risk | Personal | Good/Satisfactory
Financial risk
Financial assets	14,538
AASB 9 | Performing - Stage 1 | Credit risk | Personal | Weak
Financial risk
Financial assets	573
AASB 9 | Performing - Stage 1 | Credit risk | Loans - business
Financial risk
Financial assets	185,738
AASB 9 | Performing - Stage 1 | Credit risk | Loans - business | Strong
Financial risk
Financial assets	75,758
Financial assets covered by highly rated guarantee	131
AASB 9 | Performing - Stage 1 | Credit risk | Loans - business | Good/Satisfactory
Financial risk
Financial assets	109,541
AASB 9 | Performing - Stage 1 | Credit risk | Loans - business | Weak
Financial risk
Financial assets	439
AASB 9 | Performing - Stage 1 | Credit risk | Debt securities measured at FVOCI
Financial risk
Financial assets	73,276
AASB 9 | Performing - Stage 1 | Credit risk | Debt securities measured at FVOCI | Strong
Financial risk
Financial assets	72,813
AASB 9 | Performing - Stage 1 | Credit risk | Debt securities measured at FVOCI | Good/Satisfactory
Financial risk
Financial assets	463
AASB 9 | Performing - Stage 1 | Credit risk | Other financial assets
Financial risk
Financial assets	31,356
AASB 9 | Performing - Stage 1 | Credit risk | Other financial assets | Strong
Financial risk
Financial assets	30,623
AASB 9 | Performing - Stage 1 | Credit risk | Other financial assets | Good/Satisfactory
Financial risk
Financial assets	685
AASB 9 | Performing - Stage 1 | Credit risk | Other financial assets | Weak
Financial risk
Financial assets	48
AASB 9 | Performing - Stage 2 | Credit risk
Financial risk
Undrawn credit commitments	2,757
Total on and off balance sheet	37,484
AASB 9 | Performing - Stage 2 | Credit risk | Strong
Financial risk
Undrawn credit commitments	328
Total on and off balance sheet	1,305
AASB 9 | Performing - Stage 2 | Credit risk | Good/Satisfactory
Financial risk
Undrawn credit commitments	1,294
Total on and off balance sheet	18,156
AASB 9 | Performing - Stage 2 | Credit risk | Weak
Financial risk
Undrawn credit commitments	1,135
Total on and off balance sheet	18,023
AASB 9 | Performing - Stage 2 | Credit risk | Housing
Financial risk
Financial assets	22,784
AASB 9 | Performing - Stage 2 | Credit risk | Housing | Strong
Financial risk
Financial assets	743
AASB 9 | Performing - Stage 2 | Credit risk | Housing | Good/Satisfactory
Financial risk
Financial assets	11,326
AASB 9 | Performing - Stage 2 | Credit risk | Housing | Weak
Financial risk
Financial assets	10,715
AASB 9 | Performing - Stage 2 | Credit risk | Personal
Financial risk
Financial assets	1,788
AASB 9 | Performing - Stage 2 | Credit risk | Personal | Strong
Financial risk
Financial assets	2
AASB 9 | Performing - Stage 2 | Credit risk | Personal | Good/Satisfactory
Financial risk
Financial assets	955
AASB 9 | Performing - Stage 2 | Credit risk | Personal | Weak
Financial risk
Financial assets	831
AASB 9 | Performing - Stage 2 | Credit risk | Loans - business
Financial risk
Financial assets	10,155
AASB 9 | Performing - Stage 2 | Credit risk | Loans - business | Strong
Financial risk
Financial assets	232
AASB 9 | Performing - Stage 2 | Credit risk | Loans - business | Good/Satisfactory
Financial risk
Financial assets	4,581
AASB 9 | Performing - Stage 2 | Credit risk | Loans - business | Weak
Financial risk
Financial assets	5,342
AASB 9 | Non-performing - Stage 3 | Credit risk
Financial risk
Undrawn credit commitments	134
Total on and off balance sheet	6,851
AASB 9 | Non-performing - Stage 3 | Credit risk | Weak
Financial risk
Undrawn credit commitments	134
Total on and off balance sheet	6,851
AASB 9 | Non-performing - Stage 3 | Credit risk | Housing
Financial risk
Financial assets	4,367
AASB 9 | Non-performing - Stage 3 | Credit risk | Housing | Weak
Financial risk
Financial assets	4,367
AASB 9 | Non-performing - Stage 3 | Credit risk | Personal
Financial risk
Financial assets	380
AASB 9 | Non-performing - Stage 3 | Credit risk | Personal | Weak
Financial risk
Financial assets	380
AASB 9 | Non-performing - Stage 3 | Credit risk | Loans - business
Financial risk
Financial assets	1,970
AASB 9 | Non-performing - Stage 3 | Credit risk | Loans - business | Weak
Financial risk
Financial assets	1,970
AASB 139 | Credit risk
Financial risk
Financial assets		854,481
AASB 139 | Credit risk | Gross amount
Financial risk
Financial assets		857,295
AASB 139 | Credit risk | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		835,384
AASB 139 | Credit risk | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		597,720
Financial assets covered by highly rated guarantee		146
AASB 139 | Credit risk | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		228,797
AASB 139 | Credit risk | Gross amount | Neither past due nor impaired | Weak
Financial risk
Financial assets		8,867
AASB 139 | Credit risk | Gross amount | Past due but not impaired
Financial risk
Financial assets		20,492
AASB 139 | Credit risk | Gross amount | Impaired
Financial risk
Financial assets		1,419
AASB 139 | Credit risk | Provisions for impairment charges
Financial risk
Financial assets		(2,814)
AASB 139 | Credit risk | Provisions for impairment charges | Neither past due nor impaired | Strong | Reported
Financial risk
Financial assets		586,393
AASB 139 | Credit risk | Provisions for impairment charges | Neither past due nor impaired | Good/Satisfactory | Reported
Financial risk
Financial assets		213,693
AASB 139 | Credit risk | Cash and balances with central banks
Financial risk
Financial assets		26,788
AASB 139 | Credit risk | Cash and balances with central banks | Gross amount
Financial risk
Financial assets		26,788
AASB 139 | Credit risk | Cash and balances with central banks | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		26,788
AASB 139 | Credit risk | Cash and balances with central banks | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		26,555
AASB 139 | Credit risk | Cash and balances with central banks | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		233
AASB 139 | Credit risk | Collateral paid
Financial risk
Financial assets		4,787
AASB 139 | Credit risk | Collateral paid | Gross amount
Financial risk
Financial assets		4,787
AASB 139 | Credit risk | Collateral paid | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		4,787
AASB 139 | Credit risk | Collateral paid | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		4,787
AASB 139 | Credit risk | Trading securities and financial assets measured at FVIS
Financial risk
Financial assets		22,863
AASB 139 | Credit risk | Trading securities and financial assets measured at FVIS | Gross amount
Financial risk
Financial assets		22,863
AASB 139 | Credit risk | Trading securities and financial assets measured at FVIS | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		22,863
AASB 139 | Credit risk | Trading securities and financial assets measured at FVIS | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		22,718
AASB 139 | Credit risk | Trading securities and financial assets measured at FVIS | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		145
AASB 139 | Credit risk | Derivative financial instruments
Financial risk
Financial assets		24,101
AASB 139 | Credit risk | Derivative financial instruments | Gross amount
Financial risk
Financial assets		24,101
AASB 139 | Credit risk | Derivative financial instruments | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		24,101
AASB 139 | Credit risk | Derivative financial instruments | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		23,692
AASB 139 | Credit risk | Derivative financial instruments | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		406
AASB 139 | Credit risk | Derivative financial instruments | Gross amount | Neither past due nor impaired | Weak
Financial risk
Financial assets		3
AASB 139 | Credit risk | Available-for-sale securities
Financial risk
Financial assets		60,735
AASB 139 | Credit risk | Available-for-sale securities | Gross amount
Financial risk
Financial assets		60,735
AASB 139 | Credit risk | Available-for-sale securities | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		60,735
AASB 139 | Credit risk | Available-for-sale securities | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		60,229
AASB 139 | Credit risk | Available-for-sale securities | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		506
AASB 139 | Credit risk | Loans - housing and personal
Financial risk
Financial assets		513,921
AASB 139 | Credit risk | Loans - housing and personal | Gross amount
Financial risk
Financial assets		515,224
AASB 139 | Credit risk | Loans - housing and personal | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		498,375
AASB 139 | Credit risk | Loans - housing and personal | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		379,383
AASB 139 | Credit risk | Loans - housing and personal | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		114,627
AASB 139 | Credit risk | Loans - housing and personal | Gross amount | Neither past due nor impaired | Weak
Financial risk
Financial assets		4,365
AASB 139 | Credit risk | Loans - housing and personal | Gross amount | Past due but not impaired
Financial risk
Financial assets		16,162
AASB 139 | Credit risk | Loans - housing and personal | Gross amount | Impaired
Financial risk
Financial assets		687
AASB 139 | Credit risk | Loans - housing and personal | Provisions for impairment charges
Financial risk
Financial assets		(1,303)
AASB 139 | Credit risk | Loans - business
Financial risk
Financial assets		195,769
AASB 139 | Credit risk | Loans - business | Gross amount
Financial risk
Financial assets		197,280
AASB 139 | Credit risk | Loans - business | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		192,258
AASB 139 | Credit risk | Loans - business | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		75,331
AASB 139 | Credit risk | Loans - business | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		112,446
AASB 139 | Credit risk | Loans - business | Gross amount | Neither past due nor impaired | Weak
Financial risk
Financial assets		4,481
AASB 139 | Credit risk | Loans - business | Gross amount | Past due but not impaired
Financial risk
Financial assets		4,293
AASB 139 | Credit risk | Loans - business | Gross amount | Impaired
Financial risk
Financial assets		729
AASB 139 | Credit risk | Loans - business | Provisions for impairment charges
Financial risk
Financial assets		(1,511)
AASB 139 | Credit risk | Other financial assets
Financial risk
Financial assets		5,517
AASB 139 | Credit risk | Other financial assets | Gross amount
Financial risk
Financial assets		5,517
AASB 139 | Credit risk | Other financial assets | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		5,477
AASB 139 | Credit risk | Other financial assets | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		5,025
AASB 139 | Credit risk | Other financial assets | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		434
AASB 139 | Credit risk | Other financial assets | Gross amount | Neither past due nor impaired | Weak
Financial risk
Financial assets		18
AASB 139 | Credit risk | Other financial assets | Gross amount | Past due but not impaired
Financial risk
Financial assets		37
AASB 139 | Credit risk | Other financial assets | Gross amount | Impaired
Financial risk
Financial assets		3
Parent Entity
Financial risk
Undrawn credit commitments	168,487	167,999
Parent Entity | Credit risk
Financial risk
Financial assets		899,970
Undrawn credit commitments	168,487	167,999
Parent Entity | Credit risk | Gross amount
Financial risk
Financial assets		902,377
Parent Entity | Credit risk | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		882,306
Parent Entity | Credit risk | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		690,498
Parent Entity | Credit risk | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		184,328
Parent Entity | Credit risk | Gross amount | Neither past due nor impaired | Weak
Financial risk
Financial assets		7,480
Parent Entity | Credit risk | Gross amount | Past due but not impaired
Financial risk
Financial assets		18,915
Parent Entity | Credit risk | Provisions for impairment charges
Financial risk
Financial assets		(2,407)
Parent Entity | Credit risk | Provisions for impairment charges | Impaired
Financial risk
Financial assets		1,156
Parent Entity | Credit risk | Cash and balances with central banks
Financial risk
Financial assets		24,976
Parent Entity | Credit risk | Cash and balances with central banks | Gross amount
Financial risk
Financial assets		24,976
Parent Entity | Credit risk | Cash and balances with central banks | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		24,976
Parent Entity | Credit risk | Cash and balances with central banks | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		24,850
Parent Entity | Credit risk | Cash and balances with central banks | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		126
Parent Entity | Credit risk | Collateral paid
Financial risk
Financial assets		4,722
Parent Entity | Credit risk | Collateral paid | Gross amount
Financial risk
Financial assets		4,722
Parent Entity | Credit risk | Collateral paid | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		4,722
Parent Entity | Credit risk | Collateral paid | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		4,722
Parent Entity | Credit risk | Trading securities and financial assets measured at FVIS
Financial risk
Financial assets		21,344
Parent Entity | Credit risk | Trading securities and financial assets measured at FVIS | Gross amount
Financial risk
Financial assets		21,344
Parent Entity | Credit risk | Trading securities and financial assets measured at FVIS | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		21,344
Parent Entity | Credit risk | Trading securities and financial assets measured at FVIS | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		21,199
Parent Entity | Credit risk | Trading securities and financial assets measured at FVIS | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		145
Parent Entity | Credit risk | Derivative financial instruments
Financial risk
Financial assets		23,562
Parent Entity | Credit risk | Derivative financial instruments | Gross amount
Financial risk
Financial assets		23,562
Parent Entity | Credit risk | Derivative financial instruments | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		23,562
Parent Entity | Credit risk | Derivative financial instruments | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		23,155
Parent Entity | Credit risk | Derivative financial instruments | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		404
Parent Entity | Credit risk | Derivative financial instruments | Gross amount | Neither past due nor impaired | Weak
Financial risk
Financial assets		3
Parent Entity | Credit risk | Available-for-sale securities
Financial risk
Financial assets		56,446
Parent Entity | Credit risk | Available-for-sale securities | Gross amount
Financial risk
Financial assets		56,446
Parent Entity | Credit risk | Available-for-sale securities | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		56,446
Parent Entity | Credit risk | Available-for-sale securities | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		56,443
Parent Entity | Credit risk | Available-for-sale securities | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		3
Parent Entity | Credit risk | Loans - housing and personal
Financial risk
Financial assets		466,051
Parent Entity | Credit risk | Loans - housing and personal | Gross amount
Financial risk
Financial assets		467,176
Parent Entity | Credit risk | Loans - housing and personal | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		451,560
Parent Entity | Credit risk | Loans - housing and personal | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		359,843
Parent Entity | Credit risk | Loans - housing and personal | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		87,667
Parent Entity | Credit risk | Loans - housing and personal | Gross amount | Neither past due nor impaired | Weak
Financial risk
Financial assets		4,050
Parent Entity | Credit risk | Loans - housing and personal | Gross amount | Past due but not impaired
Financial risk
Financial assets		15,044
Parent Entity | Credit risk | Loans - housing and personal | Provisions for impairment charges
Financial risk
Financial assets		(1,125)
Parent Entity | Credit risk | Loans - housing and personal | Provisions for impairment charges | Impaired
Financial risk
Financial assets		572
Parent Entity | Credit risk | Loans - business
Financial risk
Financial assets		164,117
Parent Entity | Credit risk | Loans - business | Gross amount
Financial risk
Financial assets		165,399
Parent Entity | Credit risk | Loans - business | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		160,979
Parent Entity | Credit risk | Loans - business | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		61,918
Parent Entity | Credit risk | Loans - business | Gross amount | Neither past due nor impaired | Strong | Reported
Financial risk
Financial assets		76,995
Parent Entity | Credit risk | Loans - business | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		95,649
Parent Entity | Credit risk | Loans - business | Gross amount | Neither past due nor impaired | Good/Satisfactory | Reported
Financial risk
Financial assets		80,572
Parent Entity | Credit risk | Loans - business | Gross amount | Neither past due nor impaired | Weak
Financial risk
Financial assets		3,412
Parent Entity | Credit risk | Loans - business | Gross amount | Past due but not impaired
Financial risk
Financial assets		3,838
Parent Entity | Credit risk | Loans - business | Provisions for impairment charges
Financial risk
Financial assets		(1,282)
Parent Entity | Credit risk | Loans - business | Provisions for impairment charges | Impaired
Financial risk
Financial assets		582
Parent Entity | Credit risk | Due from subsidiaries
Financial risk
Financial assets		134,086
Parent Entity | Credit risk | Due from subsidiaries | Gross amount
Financial risk
Financial assets		134,086
Parent Entity | Credit risk | Due from subsidiaries | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		134,086
Parent Entity | Credit risk | Due from subsidiaries | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		134,086
Parent Entity | Credit risk | Other financial assets
Financial risk
Financial assets		4,666
Parent Entity | Credit risk | Other financial assets | Gross amount
Financial risk
Financial assets		4,666
Parent Entity | Credit risk | Other financial assets | Gross amount | Neither past due nor impaired
Financial risk
Financial assets		4,631
Parent Entity | Credit risk | Other financial assets | Gross amount | Neither past due nor impaired | Strong
Financial risk
Financial assets		4,282
Parent Entity | Credit risk | Other financial assets | Gross amount | Neither past due nor impaired | Good/Satisfactory
Financial risk
Financial assets		334
Parent Entity | Credit risk | Other financial assets | Gross amount | Neither past due nor impaired | Weak
Financial risk
Financial assets		15
Parent Entity | Credit risk | Other financial assets | Gross amount | Past due but not impaired
Financial risk
Financial assets		33
Parent Entity | Credit risk | Other financial assets | Provisions for impairment charges | Impaired
Financial risk
Financial assets		2
Parent Entity | AASB 9 | Credit risk
Financial risk
Undrawn credit commitments	168,487
Total on and off balance sheet	1,034,734
Parent Entity | AASB 9 | Credit risk | Strong
Financial risk
Undrawn credit commitments	133,093
Total on and off balance sheet	795,275
Parent Entity | AASB 9 | Credit risk | Good/Satisfactory
Financial risk
Undrawn credit commitments	34,219
Total on and off balance sheet	212,664
Parent Entity | AASB 9 | Credit risk | Weak
Financial risk
Undrawn credit commitments	1,175
Total on and off balance sheet	26,795
Parent Entity | AASB 9 | Credit risk | Housing
Financial risk
Financial assets	449,540
Parent Entity | AASB 9 | Credit risk | Housing | Strong
Financial risk
Financial assets	362,263
Parent Entity | AASB 9 | Credit risk | Housing | Good/Satisfactory
Financial risk
Financial assets	69,222
Parent Entity | AASB 9 | Credit risk | Housing | Weak
Financial risk
Financial assets	18,055
Parent Entity | AASB 9 | Credit risk | Personal
Financial risk
Financial assets	20,860
Parent Entity | AASB 9 | Credit risk | Personal | Strong
Financial risk
Financial assets	5,107
Parent Entity | AASB 9 | Credit risk | Personal | Good/Satisfactory
Financial risk
Financial assets	14,312
Parent Entity | AASB 9 | Credit risk | Personal | Weak
Financial risk
Financial assets	1,441
Parent Entity | AASB 9 | Credit risk | Loans - business
Financial risk
Financial assets	164,639
Parent Entity | AASB 9 | Credit risk | Loans - business | Strong
Financial risk
Financial assets	64,164
Parent Entity | AASB 9 | Credit risk | Loans - business | Good/Satisfactory
Financial risk
Financial assets	94,392
Parent Entity | AASB 9 | Credit risk | Loans - business | Weak
Financial risk
Financial assets	6,083
Parent Entity | AASB 9 | Credit risk | Debt securities measured at FVOCI
Financial risk
Financial assets	68,332
Parent Entity | AASB 9 | Credit risk | Debt securities measured at FVOCI | Strong
Financial risk
Financial assets	68,309
Parent Entity | AASB 9 | Credit risk | Debt securities measured at FVOCI | Good/Satisfactory
Financial risk
Financial assets	23
Parent Entity | AASB 9 | Credit risk | Debt securities measured at amortised cost
Financial risk
Financial assets	27
Parent Entity | AASB 9 | Credit risk | Debt securities measured at amortised cost | Strong
Financial risk
Financial assets	4
Parent Entity | AASB 9 | Credit risk | Other financial assets
Financial risk
Financial assets	162,876
Parent Entity | AASB 9 | Credit risk | Other financial assets | Strong
Financial risk
Financial assets	162,339
Parent Entity | AASB 9 | Credit risk | Other financial assets | Good/Satisfactory
Financial risk
Financial assets	496
Parent Entity | AASB 9 | Credit risk | Other financial assets | Weak
Financial risk
Financial assets	41
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk
Financial risk
Undrawn credit commitments	165,996
Total on and off balance sheet	995,519
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Strong
Financial risk
Undrawn credit commitments	132,776
Total on and off balance sheet	794,298
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Good/Satisfactory
Financial risk
Undrawn credit commitments	33,097
Total on and off balance sheet	196,533
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Weak
Financial risk
Undrawn credit commitments	123
Total on and off balance sheet	4,688
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Housing
Financial risk
Financial assets	424,061
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Housing | Strong
Financial risk
Financial assets	361,727
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Housing | Good/Satisfactory
Financial risk
Financial assets	58,599
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Housing | Weak
Financial risk
Financial assets	3,735
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Personal
Financial risk
Financial assets	18,914
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Personal | Strong
Financial risk
Financial assets	5,106
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Personal | Good/Satisfactory
Financial risk
Financial assets	13,381
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Personal | Weak
Financial risk
Financial assets	427
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Loans - business
Financial risk
Financial assets	155,340
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Loans - business | Strong
Financial risk
Financial assets	64,041
Financial assets covered by highly rated guarantee	131
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Loans - business | Good/Satisfactory
Financial risk
Financial assets	90,937
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Loans - business | Weak
Financial risk
Financial assets	362
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Debt securities measured at FVOCI
Financial risk
Financial assets	68,332
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Debt securities measured at FVOCI | Strong
Financial risk
Financial assets	68,309
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Debt securities measured at FVOCI | Good/Satisfactory
Financial risk
Financial assets	23
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Other financial assets
Financial risk
Financial assets	162,876
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Other financial assets | Strong
Financial risk
Financial assets	162,339
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Other financial assets | Good/Satisfactory
Financial risk
Financial assets	496
Parent Entity | AASB 9 | Performing - Stage 1 | Credit risk | Other financial assets | Weak
Financial risk
Financial assets	41
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk
Financial risk
Undrawn credit commitments	2,376
Total on and off balance sheet	32,966
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Strong
Financial risk
Undrawn credit commitments	317
Total on and off balance sheet	977
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Good/Satisfactory
Financial risk
Undrawn credit commitments	1,122
Total on and off balance sheet	16,131
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Weak
Financial risk
Undrawn credit commitments	937
Total on and off balance sheet	15,858
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Housing
Financial risk
Financial assets	21,403
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Housing | Strong
Financial risk
Financial assets	536
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Housing | Good/Satisfactory
Financial risk
Financial assets	10,623
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Housing | Weak
Financial risk
Financial assets	10,244
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Personal
Financial risk
Financial assets	1,612
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Personal | Strong
Financial risk
Financial assets	1
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Personal | Good/Satisfactory
Financial risk
Financial assets	931
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Personal | Weak
Financial risk
Financial assets	680
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Loans - business
Financial risk
Financial assets	7,575
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Loans - business | Strong
Financial risk
Financial assets	123
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Loans - business | Good/Satisfactory
Financial risk
Financial assets	3,455
Parent Entity | AASB 9 | Performing - Stage 2 | Credit risk | Loans - business | Weak
Financial risk
Financial assets	3,997
Parent Entity | AASB 9 | Non-performing - Stage 3 | Credit risk
Financial risk
Undrawn credit commitments	115
Total on and off balance sheet	6,249
Parent Entity | AASB 9 | Non-performing - Stage 3 | Credit risk | Weak
Financial risk
Undrawn credit commitments	115
Total on and off balance sheet	6,249
Parent Entity | AASB 9 | Non-performing - Stage 3 | Credit risk | Housing
Financial risk
Financial assets	4,076
Parent Entity | AASB 9 | Non-performing - Stage 3 | Credit risk | Housing | Weak
Financial risk
Financial assets	4,076
Parent Entity | AASB 9 | Non-performing - Stage 3 | Credit risk | Personal
Financial risk
Financial assets	334
Parent Entity | AASB 9 | Non-performing - Stage 3 | Credit risk | Personal | Weak
Financial risk
Financial assets	334
Parent Entity | AASB 9 | Non-performing - Stage 3 | Credit risk | Loans - business
Financial risk
Financial assets	1,724
Parent Entity | AASB 9 | Non-performing - Stage 3 | Credit risk | Loans - business | Weak
Financial risk
Financial assets	$ 1,724
Parent Entity | AASB 139 | Credit risk | Provisions for impairment charges | Neither past due nor impaired | Strong | Reported
Financial risk
Financial assets		687,386
Parent Entity | AASB 139 | Credit risk | Provisions for impairment charges | Neither past due nor impaired | Good/Satisfactory | Reported
Financial risk
Financial assets		210,856
Parent Entity | AASB 139 | Credit risk | Due from subsidiaries | Provisions for impairment charges
Financial risk
long-term debt instruments		$ 6,511

Financial risk - Impaired loans

Financial risk - Impaired loans and credit commitments (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Loans | Provision for ECL on loans
Credit quality
Financial assets	$ 3,608
Credit risk | Loans | Non-performing loans
Credit quality
Financial assets	5,496	$ 4,575	$ 4,110	$ 4,128	$ 3,189
Credit risk | Loans | Non-performing loans | Gross amount
Credit quality
Financial assets	6,851	5,433	5,000	5,340	4,187
Credit risk | Loans | Non-performing loans | Provision for ECL
Credit quality
Financial assets	(1,355)
Credit risk | Loans | Non-performing loans | Provisions for impairment charges
Credit quality
Financial assets		(858)	(890)	(1,212)	(998)
Credit risk | Loans | Non-performing loans | Impaired
Credit quality
Financial assets	971	763	828	1,092	1,018
Credit risk | Loans | Non-performing loans | Impaired | Gross amount
Credit quality
Financial assets	1,763	1,416	1,542	2,159	1,895
Credit risk | Loans | Non-performing loans | Impaired | Provision for ECL
Credit quality
Financial assets	(792)
Credit risk | Loans | Non-performing loans | Impaired | Provisions for impairment charges
Credit quality
Financial assets		(653)	(714)	(1,067)	(877)
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired
Credit quality
Financial assets	4,525	3,812	3,282	3,036	2,171
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Gross amount
Credit quality
Financial assets	5,088	4,017	3,458	3,181	2,292
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Provision for ECL
Credit quality
Financial assets	(563)
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Provisions for impairment charges
Credit quality
Financial assets		(205)	(176)	(145)	(121)
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Australia
Credit quality
Financial assets	4,163	3,668	3,157	2,938	2,039
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Australia | Gross amount
Credit quality
Financial assets	4,684	3,861	3,322	3,075	2,149
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Australia | Provision for ECL
Credit quality
Financial assets	(521)
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Australia | Provisions for impairment charges
Credit quality
Financial assets		(193)	(165)	(137)	(110)
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | New Zealand
Credit quality
Financial assets	307	117	108	82	120
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | New Zealand | Gross amount
Credit quality
Financial assets	340	127	117	89	130
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | New Zealand | Provision for ECL
Credit quality
Financial assets	(33)
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | New Zealand | Provisions for impairment charges
Credit quality
Financial assets		(10)	(9)	(7)	(10)
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Other overseas
Credit quality
Financial assets	55	27	17	16	12
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Other overseas | Gross amount
Credit quality
Financial assets	64	29	19	17	13
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Other overseas | Provision for ECL
Credit quality
Financial assets	(9)
Credit risk | Loans | Non-performing loans | 90 days past due but not impaired | Other overseas | Provisions for impairment charges
Credit quality
Financial assets		(2)	(2)	(1)	(1)
Credit risk | Housing and business | Non-performing loans | Impaired | Australia
Credit quality
Financial assets	724	460	515	820	648
Credit risk | Housing and business | Non-performing loans | Impaired | Australia | Gross amount
Credit quality
Financial assets	1,215	882	975	1,589	1,220
Credit risk | Housing and business | Non-performing loans | Impaired | Australia | Provision for ECL
Credit quality
Financial assets	(491)
Credit risk | Housing and business | Non-performing loans | Impaired | Australia | Provisions for impairment charges
Credit quality
Financial assets		(422)	(460)	(769)	(572)
Credit risk | Housing and business | Non-performing loans | Impaired | New Zealand
Credit quality
Financial assets	36	94	111	123	244
Credit risk | Housing and business | Non-performing loans | Impaired | New Zealand | Gross amount
Credit quality
Financial assets	62	124	152	218	348
Credit risk | Housing and business | Non-performing loans | Impaired | New Zealand | Provision for ECL
Credit quality
Financial assets	(26)
Credit risk | Housing and business | Non-performing loans | Impaired | New Zealand | Provisions for impairment charges
Credit quality
Financial assets		(30)	(41)	(95)	(104)
Credit risk | Housing and business | Non-performing loans | Impaired | Other overseas
Credit quality
Financial assets	33	7	9	23	12
Credit risk | Housing and business | Non-performing loans | Impaired | Other overseas | Gross amount
Credit quality
Financial assets	50	13	15	44	25
Credit risk | Housing and business | Non-performing loans | Impaired | Other overseas | Provision for ECL
Credit quality
Financial assets	(17)
Credit risk | Housing and business | Non-performing loans | Impaired | Other overseas | Provisions for impairment charges
Credit quality
Financial assets		(6)	(6)	(21)	(13)
Credit risk | Restructured | Non-performing loans | Impaired | Australia
Credit quality
Financial assets	10	8	5	2	10
Credit risk | Restructured | Non-performing loans | Impaired | Australia | Gross amount
Credit quality
Financial assets	16	9	12	13	22
Credit risk | Restructured | Non-performing loans | Impaired | Australia | Provision for ECL
Credit quality
Financial assets	(6)
Credit risk | Restructured | Non-performing loans | Impaired | Australia | Provisions for impairment charges
Credit quality
Financial assets		(1)	(7)	(11)	(12)
Credit risk | Restructured | Non-performing loans | Impaired | New Zealand
Credit quality
Financial assets	9	10	10	12	13
Credit risk | Restructured | Non-performing loans | Impaired | New Zealand | Gross amount
Credit quality
Financial assets	12	14	15	16	17
Credit risk | Restructured | Non-performing loans | Impaired | New Zealand | Provision for ECL
Credit quality
Financial assets	(3)
Credit risk | Restructured | Non-performing loans | Impaired | New Zealand | Provisions for impairment charges
Credit quality
Financial assets		(4)	(5)	(4)	(4)
Credit risk | Restructured | Non-performing loans | Impaired | Other overseas
Credit quality
Financial assets	2	2		1
Credit risk | Restructured | Non-performing loans | Impaired | Other overseas | Gross amount
Credit quality
Financial assets	3	3		2
Credit risk | Restructured | Non-performing loans | Impaired | Other overseas | Provision for ECL
Credit quality
Financial assets	(1)
Credit risk | Restructured | Non-performing loans | Impaired | Other overseas | Provisions for impairment charges
Credit quality
Financial assets		(1)		(1)
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | Australia
Credit quality
Financial assets	151	179	175	108	88
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | Australia | Gross amount
Credit quality
Financial assets	384	358	362	267	252
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | Australia | Provision for ECL
Credit quality
Financial assets	(233)
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | Australia | Provisions for impairment charges
Credit quality
Financial assets		(179)	(187)	(159)	(164)
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | New Zealand
Credit quality
Financial assets	5	3	3	3	3
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | New Zealand | Gross amount
Credit quality
Financial assets	20	12	11	10	10
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | New Zealand | Provision for ECL
Credit quality
Financial assets	(15)
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | New Zealand | Provisions for impairment charges
Credit quality
Financial assets		(9)	$ (8)	$ (7)	(7)
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | Other overseas
Credit quality
Financial assets	1
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | Other overseas | Gross amount
Credit quality
Financial assets	$ 1	1			1
Credit risk | Personal greater than 90 days past due | Non-performing loans | Impaired | Other overseas | Provisions for impairment charges
Credit quality
Financial assets		$ (1)			$ (1)

Financial risk - Interest on no

Financial risk - Interest on non-performing loans and restructured financial assets (Details) $ in Millions	12 Months Ended
	Sep. 30, 2019AUD ($)
Provisions for expected credit losses
Interest received	$ 10
Interest forgone	32
Australia
Provisions for expected credit losses
Interest received	4
Interest forgone	32
Overseas
Provisions for expected credit losses
Interest received	$ 6

Financial risk - Coverage from

Financial risk - Coverage from collateral held (Details)	Sep. 30, 2019	Sep. 30, 2018
Neither past due nor impaired
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		85.90%
Partially secured (as a percent)		6.80%
Unsecured (as a percent)		7.30%
Total (as a percentage)		100.00%
Neither past due nor impaired | Loans - housing and personal
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		97.50%
Partially secured (as a percent)		0.60%
Unsecured (as a percent)		1.90%
Total (as a percentage)		100.00%
Neither past due nor impaired | Loans - business
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		55.80%
Partially secured (as a percent)		22.90%
Unsecured (as a percent)		21.30%
Total (as a percentage)		100.00%
Past due but not impaired
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		85.80%
Partially secured (as a percent)		7.50%
Unsecured (as a percent)		6.70%
Total (as a percentage)		100.00%
Past due but not impaired | Loans - housing and personal
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		94.60%
Partially secured (as a percent)		2.00%
Unsecured (as a percent)		3.40%
Total (as a percentage)		100.00%
Past due but not impaired | Loans - business
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		52.80%
Partially secured (as a percent)		28.20%
Unsecured (as a percent)		19.00%
Total (as a percentage)		100.00%
Impaired
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		51.80%
Partially secured (as a percent)		10.80%
Unsecured (as a percent)		37.40%
Total (as a percentage)		100.00%
Impaired | Loans - housing and personal
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		72.80%
Partially secured (as a percent)		10.00%
Unsecured (as a percent)		17.20%
Total (as a percentage)		100.00%
Impaired | Loans - business
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		32.00%
Partially secured (as a percent)		11.50%
Unsecured (as a percent)		56.50%
Total (as a percentage)		100.00%
Performing loans
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	85.90%
Partially secured (as a percent)	6.30%
Unsecured (as a percent)	7.80%
Total (as a percentage)	100.00%
Performing loans | Housing
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	100.00%
Total (as a percentage)	100.00%
Performing loans | Personal
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	7.90%
Partially secured (as a percent)	29.90%
Unsecured (as a percent)	62.20%
Total (as a percentage)	100.00%
Performing loans | Loans - business
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	59.60%
Partially secured (as a percent)	19.30%
Unsecured (as a percent)	21.10%
Total (as a percentage)	100.00%
Non-performing loans
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	73.30%
Partially secured (as a percent)	17.00%
Unsecured (as a percent)	9.70%
Total (as a percentage)	100.00%
Non-performing loans | Housing
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	90.30%
Partially secured (as a percent)	9.70%
Total (as a percentage)	100.00%
Non-performing loans | Personal
Loan portfolio, coverage from collateral held
Partially secured (as a percent)	38.20%
Unsecured (as a percent)	61.80%
Total (as a percentage)	100.00%
Non-performing loans | Loans - business
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	49.50%
Partially secured (as a percent)	29.20%
Unsecured (as a percent)	21.30%
Total (as a percentage)	100.00%
Parent Entity | Neither past due nor impaired
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		87.50%
Partially secured (as a percent)		5.60%
Unsecured (as a percent)		6.90%
Total (as a percentage)		100.00%
Parent Entity | Neither past due nor impaired | Loans - housing and personal
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		98.10%
Partially secured (as a percent)		0.30%
Unsecured (as a percent)		1.60%
Total (as a percentage)		100.00%
Parent Entity | Neither past due nor impaired | Loans - business
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		57.80%
Partially secured (as a percent)		20.40%
Unsecured (as a percent)		21.80%
Total (as a percentage)		100.00%
Parent Entity | Past due but not impaired
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		87.30%
Partially secured (as a percent)		6.30%
Unsecured (as a percent)		6.40%
Total (as a percentage)		100.00%
Parent Entity | Past due but not impaired | Loans - housing and personal
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		95.70%
Partially secured (as a percent)		1.50%
Unsecured (as a percent)		2.80%
Total (as a percentage)		100.00%
Parent Entity | Past due but not impaired | Loans - business
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		54.70%
Partially secured (as a percent)		25.00%
Unsecured (as a percent)		20.30%
Total (as a percentage)		100.00%
Parent Entity | Impaired
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		52.20%
Partially secured (as a percent)		9.80%
Unsecured (as a percent)		38.00%
Total (as a percentage)		100.00%
Parent Entity | Impaired | Loans - housing and personal
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		76.40%
Partially secured (as a percent)		6.50%
Unsecured (as a percent)		17.10%
Total (as a percentage)		100.00%
Parent Entity | Impaired | Loans - business
Loan portfolio, coverage from collateral held
Fully secured (as a percent)		28.50%
Partially secured (as a percent)		13.10%
Unsecured (as a percent)		58.40%
Total (as a percentage)		100.00%
Parent Entity | Performing loans
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	86.70%
Partially secured (as a percent)	5.70%
Unsecured (as a percent)	7.60%
Total (as a percentage)	100.00%
Parent Entity | Performing loans | Housing
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	100.00%
Total (as a percentage)	100.00%
Parent Entity | Performing loans | Personal
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	8.60%
Partially secured (as a percent)	31.10%
Unsecured (as a percent)	60.30%
Total (as a percentage)	100.00%
Parent Entity | Performing loans | Loans - business
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	60.10%
Partially secured (as a percent)	18.20%
Unsecured (as a percent)	21.70%
Total (as a percentage)	100.00%
Parent Entity | Non-performing loans
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	75.10%
Partially secured (as a percent)	16.10%
Unsecured (as a percent)	8.80%
Total (as a percentage)	100.00%
Parent Entity | Non-performing loans | Housing
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	90.10%
Partially secured (as a percent)	9.90%
Total (as a percentage)	100.00%
Parent Entity | Non-performing loans | Personal
Loan portfolio, coverage from collateral held
Partially secured (as a percent)	34.10%
Unsecured (as a percent)	65.90%
Total (as a percentage)	100.00%
Parent Entity | Non-performing loans | Loans - business
Loan portfolio, coverage from collateral held
Fully secured (as a percent)	54.00%
Partially secured (as a percent)	27.40%
Unsecured (as a percent)	18.60%
Total (as a percentage)	100.00%

Financial risk - Collateral hel

Financial risk - Collateral held against financial assets other than loans (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Financial assets
Cash primarily for derivatives	$ 3,289	$ 2,187
Securities under reverse repurchase agreement	6,836	1,404
Securities under derivatives and stock borrowing	119	28
Total other collateral held	10,244	3,619
Parent Entity
Financial assets
Cash primarily for derivatives	2,851	1,751
Securities under reverse repurchase agreement	6,733	1,404
Securities under derivatives and stock borrowing	119	28
Total other collateral held	$ 9,703	$ 3,183

Financial risk - Liquid assets

Financial risk - Liquid assets (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Financial assets
Increase (decrease) in liquid assets	$ 16,200
Liquidity risk
Financial assets
Liquid assets	169,871	$ 153,694
Liquidity risk | Average
Financial assets
Liquid assets	156,295	150,936
Liquidity risk | Cash
Financial assets
Liquid assets	18,398	25,476
Liquidity risk | Cash | Average
Financial assets
Liquid assets	19,189	21,912
Liquidity risk | Trading securities and financial assets measured at FVIS
Financial assets
Liquid assets	18,867	11,235
Liquidity risk | Trading securities and financial assets measured at FVIS | Average
Financial assets
Liquid assets	17,184	10,051
Liquidity risk | Available-for-sale securities
Financial assets
Liquid assets		60,667
Liquidity risk | Available-for-sale securities | Average
Financial assets
Liquid assets		62,892
Liquidity risk | Investment securities
Financial assets
Liquid assets	73,328
Liquidity risk | Investment securities | Average
Financial assets
Liquid assets	66,701
Liquidity risk | Loans
Financial assets
Liquid assets	58,933	55,500
Liquidity risk | Loans | Average
Financial assets
Liquid assets	52,498	55,336
Liquidity risk | Other financial assets
Financial assets
Liquid assets	345	816
Liquidity risk | Other financial assets | Average
Financial assets
Liquid assets	$ 723	$ 745

Financial risk - Funding compos

Financial risk - Funding composition (Details) - AUD ($) $ in Billions	1 Months Ended	12 Months Ended
	Feb. 28, 2019	Sep. 30, 2019	Sep. 30, 2018
Group's total funding
Customer deposits		62.50%	63.10%
Securitisation		1.00%	0.90%
Equity		7.80%	7.90%
Group's total funding		100.00%	100.00%
Movements in the Group's funding composition
Decrease in funding through customer deposits		0.57%
Increase in customer deposits		$ 6.8
Issue of RMBS	$ 2.8
Short term funding portfolio (in AUD)		$ 101.2
Weighted average maturity period for short term funding portfolio		135 days
Unencumbered repo-eligible liquid assets and cash (in AUD)		$ 169.9
Long term wholesale funding raised (in AUD)		$ 33.5
Over 1 Year
Group's total funding
Wholesale term funding with residual maturity		16.60%	15.70%
Movements in the Group's funding composition
Increase (decrease) in funding through wholesale term funding		0.98%
Increase (decrease) in wholesale funding		$ 11
Within 1 Year
Group's total funding
Wholesale term funding with residual maturity		12.10%	12.40%
Movements in the Group's funding composition
Increase (decrease) in funding through wholesale term funding		0.38%
Additional Tier 1 (AT1) loan capital
Movements in the Group's funding composition
Basel III compliant Additional Tier 1 capital in long term wholesale funding (in AUD)		$ 1.4
Tier 2 loan capital
Movements in the Group's funding composition
Increase (decrease) in wholesale funding		$ 4.2

Financial risk - Assets pledged

Financial risk - Assets pledged as collateral (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Financial assets
Amount pledged to secure liabilities	$ 21,616	$ 18,804
Cash
Financial assets
Amount pledged to secure liabilities	5,912	4,754
Cash Deposit on Stock Borrowed
Financial assets
Amount pledged to secure liabilities	18	14
Securities (including certificates of deposit)
Financial assets
Amount pledged to secure liabilities	1,932	1,544
Securities pledged under repurchase agreements
Financial assets
Amount pledged to secure liabilities	13,754	12,492
Parent Entity
Financial assets
Amount pledged to secure liabilities	21,459	18,740
Parent Entity | Cash
Financial assets
Amount pledged to secure liabilities	5,755	4,690
Parent Entity | Cash Deposit on Stock Borrowed
Financial assets
Amount pledged to secure liabilities	18	14
Parent Entity | Securities (including certificates of deposit)
Financial assets
Amount pledged to secure liabilities	1,932	1,544
Parent Entity | Securities pledged under repurchase agreements
Financial assets
Amount pledged to secure liabilities	$ 13,754	$ 12,492

Financial risk - Contractual ma

Financial risk - Contractual maturity of financial liabilities (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	$ 818,526	$ 806,283
Loan Capital	27,298	21,715
Total undiscounted financial liabilities	845,824	827,998
Total undiscounted contingent liabilities and commitments	191,340	190,397
Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	429,919	398,721
Loan Capital	1	8
Total undiscounted financial liabilities	429,920	398,729
Total undiscounted contingent liabilities and commitments	191,340	190,397
Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	98,795	95,812
Loan Capital	76	79
Total undiscounted financial liabilities	98,871	95,891
Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	144,179	161,418
Loan Capital	371	253
Total undiscounted financial liabilities	144,550	161,671
Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	115,103	118,189
Loan Capital	6,293	4,866
Total undiscounted financial liabilities	121,396	123,055
Over 5 Years
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	30,530	32,143
Loan Capital	20,557	16,509
Total undiscounted financial liabilities	51,087	48,652
Collateral received
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	3,291	2,184
Collateral received | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	3,291	2,184
Deposits and other borrowings
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	566,613	563,940
Deposits and other borrowings | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	374,126	352,941
Deposits and other borrowings | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	83,365	85,726
Deposits and other borrowings | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	97,081	108,427
Deposits and other borrowings | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	11,968	16,771
Deposits and other borrowings | Over 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	73	75
Other financial liabilities
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	26,632	25,196
Other financial liabilities | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	19,425	18,894
Other financial liabilities | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	3,176	2,445
Other financial liabilities | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	3,874	3,697
Other financial liabilities | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	157	160
Derivative financial instruments: Held for trading
Disclosure of financial liabilities [abstract]
Derivative financial instruments	27,945	22,869
Derivative financial instruments: Held for trading | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Derivative financial instruments	27,945	22,869
Derivative financial instruments: Held for hedging purposes (net settled)
Disclosure of financial liabilities [abstract]
Derivative financial instruments	1,093	1,377
Derivative financial instruments: Held for hedging purposes (net settled) | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Derivative financial instruments	57	68
Derivative financial instruments: Held for hedging purposes (net settled) | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Derivative financial instruments	85	95
Derivative financial instruments: Held for hedging purposes (net settled) | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Derivative financial instruments	280	377
Derivative financial instruments: Held for hedging purposes (net settled) | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Derivative financial instruments	631	741
Derivative financial instruments: Held for hedging purposes (net settled) | Over 5 Years
Disclosure of financial liabilities [abstract]
Derivative financial instruments	40	96
Derivative financial instruments: Held for hedging purposes (gross settled)
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow	1,710	12,283
Derivative financial instruments: Cash inflow	(1,617)	(11,796)
Derivative financial instruments: Held for hedging purposes (gross settled) | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow	4	2,680
Derivative financial instruments: Cash inflow		(2,658)
Derivative financial instruments: Held for hedging purposes (gross settled) | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow	287	5,140
Derivative financial instruments: Cash inflow	(276)	(5,096)
Derivative financial instruments: Held for hedging purposes (gross settled) | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow	902	406
Derivative financial instruments: Cash inflow	(875)	(337)
Derivative financial instruments: Held for hedging purposes (gross settled) | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow	517	2,799
Derivative financial instruments: Cash inflow	(466)	(2,527)
Derivative financial instruments: Held for hedging purposes (gross settled) | Over 5 Years
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow		1,258
Derivative financial instruments: Cash inflow		(1,178)
Debt issues
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	192,859	190,230
Debt issues | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	5,071	1,743
Debt issues | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	12,158	7,502
Debt issues | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	42,917	48,848
Debt issues | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	102,296	100,245
Debt issues | Over 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	30,417	31,892
Letters of credit and guarantees
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	15,150	15,585
Letters of credit and guarantees | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	15,150	15,585
Commitments to extend credit
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	176,002	174,658
Commitments to extend credit | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	176,002	174,658
Other commitments
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	188	154
Other commitments | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	188	154
Parent Entity
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	913,434	911,501
Loan Capital	27,298	21,715
Total undiscounted financial liabilities	940,732	933,216
Total undiscounted contingent liabilities and commitments	168,487	167,999
Parent Entity | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	410,319	383,892
Loan Capital	1	8
Total undiscounted financial liabilities	410,320	383,900
Total undiscounted contingent liabilities and commitments	168,487	167,999
Parent Entity | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	85,876	85,259
Loan Capital	76	79
Total undiscounted financial liabilities	85,952	85,338
Parent Entity | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	129,423	149,428
Loan Capital	371	253
Total undiscounted financial liabilities	129,794	149,681
Parent Entity | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	117,027	124,264
Loan Capital	6,293	4,866
Total undiscounted financial liabilities	123,320	129,130
Parent Entity | Over 5 Years
Disclosure of financial liabilities [abstract]
Total financial liabilities excluding loan capital	170,789	168,658
Loan Capital	20,557	16,509
Total undiscounted financial liabilities	191,346	185,167
Parent Entity | Collateral received
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	2,853	1,748
Parent Entity | Collateral received | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	2,853	1,748
Parent Entity | Deposits and other borrowings
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	504,195	504,431
Parent Entity | Deposits and other borrowings | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	339,448	320,365
Parent Entity | Deposits and other borrowings | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	70,761	74,530
Parent Entity | Deposits and other borrowings | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	83,602	94,855
Parent Entity | Deposits and other borrowings | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	10,311	14,606
Parent Entity | Deposits and other borrowings | Over 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	73	75
Parent Entity | Other financial liabilities
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	26,243	24,692
Parent Entity | Other financial liabilities | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	19,340	18,835
Parent Entity | Other financial liabilities | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	3,121	2,363
Parent Entity | Other financial liabilities | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	3,625	3,334
Parent Entity | Other financial liabilities | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	157	160
Parent Entity | Derivative financial instruments: Held for trading
Disclosure of financial liabilities [abstract]
Derivative financial instruments	28,329	23,039
Parent Entity | Derivative financial instruments: Held for trading | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Derivative financial instruments	28,329	23,039
Parent Entity | Derivative financial instruments: Held for hedging purposes (net settled)
Disclosure of financial liabilities [abstract]
Derivative financial instruments	538	1,081
Parent Entity | Derivative financial instruments: Held for hedging purposes (net settled) | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Derivative financial instruments	21	51
Parent Entity | Derivative financial instruments: Held for hedging purposes (net settled) | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Derivative financial instruments	9	55
Parent Entity | Derivative financial instruments: Held for hedging purposes (net settled) | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Derivative financial instruments	97	271
Parent Entity | Derivative financial instruments: Held for hedging purposes (net settled) | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Derivative financial instruments	378	608
Parent Entity | Derivative financial instruments: Held for hedging purposes (net settled) | Over 5 Years
Disclosure of financial liabilities [abstract]
Derivative financial instruments	33	96
Parent Entity | Derivative financial instruments: Held for hedging purposes (gross settled)
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow	278	10,634
Derivative financial instruments: Cash inflow	(266)	(10,313)
Parent Entity | Derivative financial instruments: Held for hedging purposes (gross settled) | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow		2,632
Derivative financial instruments: Cash inflow		(2,615)
Parent Entity | Derivative financial instruments: Held for hedging purposes (gross settled) | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow	221	4,725
Derivative financial instruments: Cash inflow	(215)	(4,687)
Parent Entity | Derivative financial instruments: Held for hedging purposes (gross settled) | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow	57	377
Derivative financial instruments: Cash inflow	(51)	(324)
Parent Entity | Derivative financial instruments: Held for hedging purposes (gross settled) | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow		2,174
Derivative financial instruments: Cash inflow		(2,043)
Parent Entity | Derivative financial instruments: Held for hedging purposes (gross settled) | Over 5 Years
Disclosure of financial liabilities [abstract]
Derivative financial instruments: Cash outflow		726
Derivative financial instruments: Cash inflow		(644)
Parent Entity | Debt issues
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	166,980	168,667
Parent Entity | Debt issues | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	4,790	1,588
Parent Entity | Debt issues | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	10,959	7,117
Parent Entity | Debt issues | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	37,104	45,527
Parent Entity | Debt issues | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	86,064	85,106
Parent Entity | Debt issues | Over 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	28,063	29,329
Parent Entity | Due to subsidiaries
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	184,284	187,522
Parent Entity | Due to subsidiaries | Reported
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities		142,400
Parent Entity | Due to subsidiaries | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	15,538	18,249
Parent Entity | Due to subsidiaries | Over 1 Month to 3 Months
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	1,020	1,156
Parent Entity | Due to subsidiaries | Over 3 Months to 1 Year
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	4,989	5,388
Parent Entity | Due to subsidiaries | Over 1 Year to 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	20,117	23,653
Parent Entity | Due to subsidiaries | Over 5 Years
Disclosure of financial liabilities [abstract]
Non-derivative financial Liabilities	142,620	139,076
Parent Entity | Letters of credit and guarantees
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	14,583	14,957
Parent Entity | Letters of credit and guarantees | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	14,583	14,957
Parent Entity | Commitments to extend credit
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	153,716	152,943
Parent Entity | Commitments to extend credit | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	153,716	152,943
Parent Entity | Other commitments
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	188	99
Parent Entity | Other commitments | Less than or Up to 1 Month
Disclosure of financial liabilities [abstract]
Total undiscounted contingent liabilities and commitments	$ 188	$ 99

Financial risk - Expected matur

Financial risk - Expected maturity of financial assets and financial liabilities (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Assets
Cash and balances with central banks	$ 20,059	$ 26,788
Collateral paid	5,930	4,787
Trading securities and financial assets measured at FVIS	31,781	23,132
Derivative financial instruments	29,859	24,101
Investment securities	73,401
Available-for-sale securities		61,119
Loans (net of provisions)	714,770	709,690
Other financial assets	5,367	5,517
Life insurance assets	9,367	9,450
Investments in associates	129	115
All other assets	15,963	14,893
Total assets	906,626	879,592
Liabilities
Collateral received	3,287	2,184
Deposits and other borrowings	563,247	559,285
Other financial liabilities	29,215	28,105
Derivative financial instruments	29,096	24,407
Debt issues	181,457	172,596
Life insurance liabilities	7,377	7,597
All other liabilities	5,614	3,580
Total liabilities excluding loan capital	819,293	797,754
Loan capital	21,826	17,265
Total liabilities	841,119	815,019
Net assets/(net liabilities)	65,507	64,573
Within 1 Year
Assets
Cash and balances with central banks	20,059	26,788
Collateral paid	5,930	4,787
Trading securities and financial assets measured at FVIS	18,544	12,191
Derivative financial instruments	20,695	17,828
Investment securities	9,810
Available-for-sale securities		6,959
Loans (net of provisions)	99,197	94,717
Other financial assets	5,367	5,517
Life insurance assets	1,541	1,598
All other assets	1,222	1,008
Total assets	182,365	171,393
Liabilities
Collateral received	3,287	2,184
Deposits and other borrowings	551,817	543,198
Other financial liabilities	29,059	27,956
Derivative financial instruments	19,203	17,346
Debt issues	56,933	53,930
Life insurance liabilities	1,703	1,547
All other liabilities	3,907	2,812
Total liabilities excluding loan capital	665,909	648,973
Loan capital		1,382
Total liabilities	665,909	650,355
Net assets/(net liabilities)	(483,544)	(478,962)
Over 1 Year
Assets
Trading securities and financial assets measured at FVIS	13,237	10,941
Derivative financial instruments	9,164	6,273
Investment securities	63,591
Available-for-sale securities		54,160
Loans (net of provisions)	615,573	614,973
Life insurance assets	7,826	7,852
Investments in associates	129	115
All other assets	14,741	13,885
Total assets	724,261	708,199
Liabilities
Deposits and other borrowings	11,430	16,087
Other financial liabilities	156	149
Derivative financial instruments	9,893	7,061
Debt issues	124,524	118,666
Life insurance liabilities	5,674	6,050
All other liabilities	1,707	768
Total liabilities excluding loan capital	153,384	148,781
Loan capital	21,826	15,883
Total liabilities	175,210	164,664
Net assets/(net liabilities)	549,051	543,535
Parent Entity
Assets
Cash and balances with central banks	17,692	24,976
Collateral paid	5,773	4,722
Trading securities and financial assets measured at FVIS	29,565	21,415
Derivative financial instruments	29,283	23,562
Investment securities	68,398
Available-for-sale securities		56,513
Loans (net of provisions)	631,936	630,168
Other financial assets	4,615	4,666
Due from subsidiaries	142,961	140,597
Investment in subsidiaries	6,436	4,508
Investments in associates	100	76
All other assets	12,980	12,027
Total assets	949,739	923,230
Liabilities
Collateral received	2,849	1,748
Deposits and other borrowings	501,430	500,468
Other financial liabilities	28,516	27,266
Derivative financial instruments	28,867	24,229
Debt issues	156,674	152,288
Due to subsidiaries	148,607	142,400
All other liabilities	4,132	2,210
Total liabilities excluding loan capital	871,075	850,609
Loan capital	21,826	17,265
Total liabilities	892,901	867,874
Net assets/(net liabilities)	56,838	55,356
Parent Entity | Within 1 Year
Assets
Cash and balances with central banks	17,692	24,976
Collateral paid	5,773	4,722
Trading securities and financial assets measured at FVIS	16,736	11,466
Derivative financial instruments	20,613	17,677
Investment securities	7,200
Available-for-sale securities		4,846
Loans (net of provisions)	79,956	76,389
Other financial assets	4,615	4,666
Due from subsidiaries	10,291	12,661
All other assets	756	681
Total assets	163,632	158,084
Liabilities
Collateral received	2,849	1,748
Deposits and other borrowings	491,562	486,418
Other financial liabilities	28,360	27,117
Derivative financial instruments	19,167	17,317
Debt issues	50,028	50,499
Due to subsidiaries	17,563	19,932
All other liabilities	2,545	1,534
Total liabilities excluding loan capital	612,074	604,565
Loan capital		1,382
Total liabilities	612,074	605,947
Net assets/(net liabilities)	(448,442)	(447,863)
Parent Entity | Over 1 Year
Assets
Trading securities and financial assets measured at FVIS	12,829	9,949
Derivative financial instruments	8,670	5,885
Investment securities	61,198
Available-for-sale securities		51,667
Loans (net of provisions)	551,980	553,779
Due from subsidiaries	132,670	127,936
Investment in subsidiaries	6,436	4,508
Investments in associates	100	76
All other assets	12,224	11,346
Total assets	786,107	765,146
Liabilities
Deposits and other borrowings	9,868	14,050
Other financial liabilities	156	149
Derivative financial instruments	9,700	6,912
Debt issues	106,646	101,789
Due to subsidiaries	131,044	122,468
All other liabilities	1,587	676
Total liabilities excluding loan capital	259,001	246,044
Loan capital	21,826	15,883
Total liabilities	280,827	261,927
Net assets/(net liabilities)	$ 505,280	$ 503,219

Financial risk - Value-at-Risk

Financial risk - Value-at-Risk (Details)	12 Months Ended
	Sep. 30, 2019
Key parameters of VaR
Holding period	1 day
Confidence level	99.00%
Period of historical data used	1 year

Financial risk - Traded market

Financial risk - Traded market risk (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Net market risk | Maximum
Traded market risk
Value at risk	$ 45.3	$ 28.1	$ 22.9
Net market risk | Minimum
Traded market risk
Value at risk	7.9	6.7	9.7
Net market risk | Average
Traded market risk
Value at risk	14.4	13.4	13.9
Interest rate risk | Maximum
Traded market risk
Value at risk	14.9	15.6	16
Interest rate risk | Minimum
Traded market risk
Value at risk	6.6	5.1	4.6
Interest rate risk | Average
Traded market risk
Value at risk	10.9	8.6	8.5
Foreign exchange risk | Maximum
Traded market risk
Value at risk	8.6	6.9	9.4
Foreign exchange risk | Minimum
Traded market risk
Value at risk	0.8	0.7	0.6
Foreign exchange risk | Average
Traded market risk
Value at risk	4.1	3	3.1
Equity risk | Maximum
Traded market risk
Value at risk	0.2	1	0.4
Equity risk | Minimum
Traded market risk
Value at risk	0	0	0
Equity risk | Average
Traded market risk
Value at risk	0	0.1	0.1
Commodity risk | Maximum
Traded market risk
Value at risk	42	24.3	14.1
Commodity risk | Minimum
Traded market risk
Value at risk	1.7	1.7	3.3
Commodity risk | Average
Traded market risk
Value at risk	8.2	6.5	6.6
Other market risks | Maximum
Traded market risk
Value at risk	5.5	5.8	5.1
Other market risks | Minimum
Traded market risk
Value at risk	2	1.4	3.5
Other market risks | Average
Traded market risk
Value at risk	3.5	3.8	4.2
Diversification effect | Average
Traded market risk
Value at risk	(12.3)	(8.6)	(8.6)
Parent Entity | Net market risk | Maximum
Traded market risk
Value at risk	45.3	28.1	22.9
Parent Entity | Net market risk | Minimum
Traded market risk
Value at risk	7.9	6.7	9.7
Parent Entity | Net market risk | Average
Traded market risk
Value at risk	14.4	13.4	13.9
Parent Entity | Interest rate risk | Maximum
Traded market risk
Value at risk	14.9	15.6	16
Parent Entity | Interest rate risk | Minimum
Traded market risk
Value at risk	6.6	5.1	4.6
Parent Entity | Interest rate risk | Average
Traded market risk
Value at risk	10.9	8.6	8.5
Parent Entity | Foreign exchange risk | Maximum
Traded market risk
Value at risk	8.6	6.9	9.4
Parent Entity | Foreign exchange risk | Minimum
Traded market risk
Value at risk	0.8	0.7	0.6
Parent Entity | Foreign exchange risk | Average
Traded market risk
Value at risk	4.1	3	3.1
Parent Entity | Equity risk | Maximum
Traded market risk
Value at risk	0.2	1	0.4
Parent Entity | Equity risk | Minimum
Traded market risk
Value at risk	0	0	0
Parent Entity | Equity risk | Average
Traded market risk
Value at risk	0	0.1	0.1
Parent Entity | Commodity risk | Maximum
Traded market risk
Value at risk	42	24.3	14.1
Parent Entity | Commodity risk | Minimum
Traded market risk
Value at risk	1.7	1.7	3.3
Parent Entity | Commodity risk | Average
Traded market risk
Value at risk	8.2	6.5	6.6
Parent Entity | Other market risks | Maximum
Traded market risk
Value at risk	5.5	5.8	5.1
Parent Entity | Other market risks | Minimum
Traded market risk
Value at risk	2	1.4	3.5
Parent Entity | Other market risks | Average
Traded market risk
Value at risk	3.5	3.8	4.2
Parent Entity | Diversification effect | Average
Traded market risk
Value at risk	$ (12.3)	$ (8.6)	$ (8.6)

Financial risk - Non-traded mar

Financial risk - Non-traded market risk (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Non-traded market risk
Time horizon for modelling of interest rate scenarios	3 years
Confidence level	99.00%
Net interest income-at-risk (NaR)
Net interest income-at-risk (as a percent)	2.88%	0.01%
Value at Risk - IRRBB
Value at Risk - IRBBB	$ 34.1	$ 23.2
Maximum
Non-traded market risk
Variance from current market yield used in modelling interest rate scenarios	2
Net interest income-at-risk (NaR)
Net interest income-at-risk (as a percent)	2.88%	0.78%
Value at Risk - IRRBB
Value at Risk - IRBBB	$ 37.3	$ 57
Minimum
Non-traded market risk
Variance from current market yield used in modelling interest rate scenarios	1
Net interest income-at-risk (NaR)
Net interest income-at-risk (as a percent)	(0.46%)	(0.09%)
Value at Risk - IRRBB
Value at Risk - IRBBB	$ 19.4	$ 23.2
Average
Net interest income-at-risk (NaR)
Net interest income-at-risk (as a percent)	0.81%	0.27%
Value at Risk - IRRBB
Value at Risk - IRBBB	$ 27.8	$ 32.5
Parent Entity
Net interest income-at-risk (NaR)
Net interest income-at-risk (as a percent)	2.14%	(0.22%)
Value at Risk - IRRBB
Value at Risk - IRBBB	$ 38.3	$ 20.8
Parent Entity | Maximum
Net interest income-at-risk (NaR)
Net interest income-at-risk (as a percent)	2.14%	0.51%
Parent Entity | Minimum
Net interest income-at-risk (NaR)
Net interest income-at-risk (as a percent)	(0.42%)	(0.28%)
Parent Entity | Average
Net interest income-at-risk (NaR)
Net interest income-at-risk (as a percent)	0.43%	0.04%

Fair values of financial asse_3

Fair values of financial assets and financial liabilities - Hierarchy (Details) - Recurring - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	$ 143,848	$ 118,348
Financial liabilities measured at fair value on a recurring basis	86,075	80,834
Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	22,707	22,319
Financial liabilities measured at fair value on a recurring basis	270	572
Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	120,742	95,065
Financial liabilities measured at fair value on a recurring basis	85,776	80,256
Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	399	964
Financial liabilities measured at fair value on a recurring basis	29	6
Deposits and other borrowings
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	38,413	41,178
Contractual outstanding amount payable at fair value, deposits and other borrowings	38,468	41,330
Deposits and other borrowings | Level 2
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	38,413	41,178
Other financial liabilities at fair value
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	5,370	4,297
Contractual outstanding amounts payable at fair value, other financial liabilities	5,369	4,298
Other financial liabilities at fair value | Level 1
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	262	496
Other financial liabilities at fair value | Level 2
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	5,108	3,801
Derivative financial instruments
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	29,096	24,407
Derivative financial instruments | Level 1
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	8	76
Derivative financial instruments | Level 2
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	29,059	24,325
Derivative financial instruments | Level 3
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	29	6
Debt issues
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	5,819	3,355
Contractual outstanding amount payable at fair value, debt issues	5,632	3,475
Decrease in cumulative change in fair value of debt securities	34	45
Debt issues | Level 2
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	5,819	3,355
Life insurance liabilities
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	7,377	7,597
Life insurance liabilities | Level 2
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	7,377	7,597
Trading securities and financial assets measured at FVIS
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	31,781	23,132
Trading securities and financial assets measured at FVIS | Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	10,440	8,958
Trading securities and financial assets measured at FVIS | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	21,121	13,844
Trading securities and financial assets measured at FVIS | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	220	330
Derivative financial instruments
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	29,859	24,101
Derivative financial instruments | Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	7	20
Derivative financial instruments | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	29,828	24,066
Derivative financial instruments | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	24	15
Available-for-sale securities
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis		61,119
Available-for-sale securities | Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis		11,996
Available-for-sale securities | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis		48,504
Available-for-sale securities | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis		619
Investment securities
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	72,581
Investment securities | Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	11,163
Investment securities | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	61,284
Investment securities | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	134
Loans
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	260	546
Loans | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	239	546
Loans | Level 2 | Previously stated
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis		3,250
Loans | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	21
Life insurance assets
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	9,367	9,450
Life insurance assets | Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	1,097	1,345
Life insurance assets | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	8,270	8,105
Parent Entity
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	128,376	102,314
Financial liabilities measured at fair value on a recurring basis	76,807	72,334
Parent Entity | Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	20,411	19,629
Financial liabilities measured at fair value on a recurring basis	270	572
Parent Entity | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	107,662	82,396
Financial liabilities measured at fair value on a recurring basis	76,509	71,756
Parent Entity | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	303	289
Financial liabilities measured at fair value on a recurring basis	28	6
Parent Entity | Deposits and other borrowings
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	37,355	40,062
Contractual outstanding amount payable at fair value, deposits and other borrowings	37,410	40,214
Parent Entity | Deposits and other borrowings | Level 2
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	37,355	40,062
Parent Entity | Other financial liabilities at fair value
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	5,370	4,297
Contractual outstanding amounts payable at fair value, other financial liabilities	5,369	4,298
Parent Entity | Other financial liabilities at fair value | Level 1
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	262	496
Parent Entity | Other financial liabilities at fair value | Level 2
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	5,108	3,801
Parent Entity | Derivative financial instruments
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	28,867	24,229
Parent Entity | Derivative financial instruments | Level 1
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	8	76
Parent Entity | Derivative financial instruments | Level 2
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	28,831	24,147
Parent Entity | Derivative financial instruments | Level 3
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	28	6
Parent Entity | Debt issues
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	3,624	3,223
Contractual outstanding amount payable at fair value, debt issues	3,436	3,344
Decrease in cumulative change in fair value of debt securities	34	45
Parent Entity | Debt issues | Level 2
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	3,624	3,223
Parent Entity | Due to subsidiaries
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	1,591	523
Parent Entity | Due to subsidiaries | Level 2
Fair values of financial assets and financial liabilities
Financial liabilities measured at fair value on a recurring basis	1,591	523
Parent Entity | Trading securities and financial assets measured at FVIS
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	29,565	21,415
Parent Entity | Trading securities and financial assets measured at FVIS | Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	10,213	8,952
Parent Entity | Trading securities and financial assets measured at FVIS | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	19,159	12,257
Parent Entity | Trading securities and financial assets measured at FVIS | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	193	206
Parent Entity | Derivative financial instruments
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	29,283	23,562
Parent Entity | Derivative financial instruments | Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	7	20
Parent Entity | Derivative financial instruments | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	29,253	23,529
Parent Entity | Derivative financial instruments | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	23	13
Parent Entity | Available-for-sale securities
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis		56,513
Parent Entity | Available-for-sale securities | Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis		10,657
Parent Entity | Available-for-sale securities | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis		45,786
Parent Entity | Available-for-sale securities | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis		70
Parent Entity | Investment securities
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	68,371
Parent Entity | Investment securities | Level 1
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	10,191
Parent Entity | Investment securities | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	58,114
Parent Entity | Investment securities | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	66
Parent Entity | Loans
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	260	546
Parent Entity | Loans | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	239	546
Parent Entity | Loans | Level 2 | Previously stated
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis		3,250
Parent Entity | Loans | Level 3
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	21
Parent Entity | Due from subsidiaries
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	897	278
Parent Entity | Due from subsidiaries | Level 2
Fair values of financial assets and financial liabilities
Financial assets measured at fair value on a recurring basis	$ 897	$ 278

Fair values of financial asse_4

Fair values of financial assets and financial liabilities - Non-market observable valuation techniques Level 3 (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Oct. 01, 2018
Day one profit or loss
Closing balance of unrecognised day one profit (loss)	$ 3	$ 4
At fair value | Level 3
Assets
Balance at the beginning of the year	964	1,399
Impact on adoption of AASB 9			$ (492)
Restated opening balance			472
Gains/(losses) on assets recognised in: Income statements	48	3
Gains/(losses) on assets recognised in: Other comprehensive income	11
Gains/(losses) on assets recognised in: Available-for-sale securities reserve		(7)
Acquisition and issues	115	1,516
Disposal and settlements	(250)	(1,893)
Transfer into or out of non-market observables		(75)
Foreign currency translation impacts	3	21
Balance at the end of the year	399	964
Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year	42	(3)
Liabilities
Balance at the beginning of the year	6	9
Restated opening balance			6
(Gains)/losses on liabilities recognised in: Income statements	7	1
Acquisition and issues	4	1
Disposal and settlements	(6)	(5)
Transfer into or out of non-market observables	18
Balance at the end of the year	29	6
Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year	(11)	(2)
At fair value | Level 3 | Derivative financial instruments
Liabilities
Balance at the beginning of the year	6	9
Restated opening balance			6
(Gains)/losses on liabilities recognised in: Income statements	7	1
Acquisition and issues	4	1
Disposal and settlements	(6)	(5)
Transfer into or out of non-market observables	18
Balance at the end of the year	29	6
Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year	(11)	(2)
At fair value | Level 3 | Trading securities and financial assets measured at FVIS
Assets
Balance at the beginning of the year	330	767
Impact on adoption of AASB 9			4
Restated opening balance			334
Gains/(losses) on assets recognised in: Income statements	36	2
Acquisition and issues	63	67
Disposal and settlements	(216)	(433)
Transfer into or out of non-market observables		(75)
Foreign currency translation impacts	3	2
Balance at the end of the year	220	330
Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year	26	(7)
At fair value | Level 3 | Available-for-sale securities
Assets
Balance at the beginning of the year	619	617
Impact on adoption of AASB 9			(619)
Gains/(losses) on assets recognised in: Available-for-sale securities reserve		(7)
Acquisition and issues		1,446
Disposal and settlements		(1,456)
Foreign currency translation impacts		19
Balance at the end of the year		619
At fair value | Level 3 | Investment securities
Assets
Impact on adoption of AASB 9			109
Restated opening balance			109
Gains/(losses) on assets recognised in: Other comprehensive income	11
Acquisition and issues	36
Disposal and settlements	(22)
Balance at the end of the year	134
At fair value | Level 3 | Other
Assets
Balance at the beginning of the year	15	15
Impact on adoption of AASB 9			14
Restated opening balance			29
Gains/(losses) on assets recognised in: Income statements	12	1
Acquisition and issues	16	3
Disposal and settlements	(12)	(4)
Balance at the end of the year	45	15
Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year	16	4
Parent Entity
Day one profit or loss
Closing balance of unrecognised day one profit (loss)	3	4
Parent Entity | At fair value | Level 3
Assets
Balance at the beginning of the year	289	580
Impact on adoption of AASB 9			11
Restated opening balance			300
Gains/(losses) on assets recognised in: Income statements	19	7
Gains/(losses) on assets recognised in: Available-for-sale securities reserve		2
Acquisition and issues	35	42
Disposal and settlements	(54)	(288)
Transfer into or out of non-market observables		(53)
Foreign currency translation impacts	3	(1)
Balance at the end of the year	303	289
Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year	19	9
Liabilities
Balance at the beginning of the year	6
Restated opening balance			6
(Gains)/losses on liabilities recognised in: Income statements	6
Acquisition and issues	4
Disposal and settlements	(6)
Transfer into or out of non-market observables	18
Balance at the end of the year	28	6
Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year	(10)
Parent Entity | At fair value | Level 3 | Derivative financial instruments
Liabilities
Balance at the beginning of the year	6	9
Restated opening balance			6
(Gains)/losses on liabilities recognised in: Income statements	6	1
Acquisition and issues	4	1
Disposal and settlements	(6)	(5)
Transfer into or out of non-market observables	18
Balance at the end of the year	28	6
Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year	(10)	(2)
Parent Entity | At fair value | Level 3 | Trading securities and financial assets measured at FVIS
Assets
Balance at the beginning of the year	206	501
Restated opening balance			206
Gains/(losses) on assets recognised in: Income statements	6	6
Acquisition and issues	17	21
Disposal and settlements	(39)	(268)
Transfer into or out of non-market observables		(53)
Foreign currency translation impacts	3	(1)
Balance at the end of the year	193	206
Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year	3	5
Parent Entity | At fair value | Level 3 | Available-for-sale securities
Assets
Balance at the beginning of the year	70	64
Impact on adoption of AASB 9			(70)
Gains/(losses) on assets recognised in: Available-for-sale securities reserve		2
Acquisition and issues		18
Disposal and settlements		(14)
Balance at the end of the year		70
Parent Entity | At fair value | Level 3 | Investment securities
Assets
Impact on adoption of AASB 9			67
Restated opening balance			67
Acquisition and issues	2
Disposal and settlements	(3)
Balance at the end of the year	66
Parent Entity | At fair value | Level 3 | Other
Assets
Balance at the beginning of the year	13	15
Impact on adoption of AASB 9			14
Restated opening balance			$ 27
Gains/(losses) on assets recognised in: Income statements	13	1
Acquisition and issues	16	3
Disposal and settlements	(12)	(6)
Balance at the end of the year	44	13
Unrealised gains/(losses) recognised in the income statements for financial instruments held as at end of year	$ 16	$ 4

Fair values of financial asse_5

Fair values of financial assets and financial liabilities - Not measured at fair value (Details) - Not measured at fair value - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	$ 746,686	$ 746,236
Financial liabilities, Carrying Amount	749,430	730,605
Financial assets, Fair Value	748,306	746,538
Financial Liabilities, Fair Value	751,562	732,281
Collateral received
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	3,287	2,184
Financial Liabilities, Fair Value	3,287	2,184
Deposits and other borrowings
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	524,834	518,107
Financial Liabilities, Fair Value	525,516	518,791
Other financial liabilities
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	23,845	23,808
Financial Liabilities, Fair Value	23,845	23,808
Debt issues
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	175,638	169,241
Financial Liabilities, Fair Value	176,838	170,060
Loan capital
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	21,826	17,265
Financial Liabilities, Fair Value	22,076	17,438
Cash and balances with central banks
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	20,059	26,788
Financial assets, Fair Value	20,059	26,788
Collateral paid
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	5,930	4,787
Financial assets, Fair Value	5,930	4,787
Investment securities
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	820
Financial assets, Fair Value	820
Loans
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	714,510	709,144
Financial assets, Fair Value	716,130	709,446
Loans | Previously stated
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount		706,440
Financial assets, Fair Value		706,742
Other financial assets
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	5,367	5,517
Financial assets, Fair Value	5,367	5,517
Level 1
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	25,989	31,575
Financial Liabilities, Fair Value	3,287	2,184
Level 1 | Collateral received
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	3,287	2,184
Level 1 | Cash and balances with central banks
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	20,059	26,788
Level 1 | Collateral paid
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	5,930	4,787
Level 2
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	5,733	5,517
Financial Liabilities, Fair Value	745,485	727,259
Level 2 | Deposits and other borrowings
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	522,726	515,953
Level 2 | Other financial liabilities
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	23,845	23,808
Level 2 | Debt issues
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	176,838	170,060
Level 2 | Loan capital
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	22,076	17,438
Level 2 | Investment securities
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	366
Level 2 | Other financial assets
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	5,367	5,517
Level 3
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	716,584	709,446
Financial Liabilities, Fair Value	2,790	2,838
Level 3 | Deposits and other borrowings
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	2,790	2,838
Level 3 | Investment securities
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	454
Level 3 | Loans
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	716,130	709,446
Parent Entity
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	793,682	797,794
Financial liabilities, Carrying Amount	811,962	793,330
Financial assets, Fair Value	795,965	798,801
Financial Liabilities, Fair Value	813,889	794,886
Parent Entity | Collateral received
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	2,849	1,748
Financial Liabilities, Fair Value	2,849	1,748
Parent Entity | Deposits and other borrowings
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	464,075	460,406
Financial Liabilities, Fair Value	464,691	461,054
Parent Entity | Other financial liabilities
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	23,146	22,969
Financial Liabilities, Fair Value	23,146	22,969
Parent Entity | Debt issues
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	153,050	149,065
Financial Liabilities, Fair Value	154,111	149,800
Parent Entity | Due to subsidiaries
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	147,016	141,877
Financial Liabilities, Fair Value	147,016	141,877
long-term debt instruments	8,165	6,511
Parent Entity | Due to subsidiaries | Previously stated
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount		142,400
Parent Entity | Loan capital
Fair values of financial assets and financial liabilities
Financial liabilities, Carrying Amount	21,826	17,265
Financial Liabilities, Fair Value	22,076	17,438
Parent Entity | Cash and balances with central banks
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	17,692	24,976
Financial assets, Fair Value	17,692	24,976
Parent Entity | Collateral paid
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	5,773	4,722
Financial assets, Fair Value	5,773	4,722
Parent Entity | Investment securities
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	27
Financial assets, Fair Value	27
Parent Entity | Loans
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	631,676	629,622
Financial assets, Fair Value	633,003	629,774
Parent Entity | Loans | Previously stated
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount		626,918
Financial assets, Fair Value		627,070
Parent Entity | Due from subsidiaries
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	133,899	133,808
Financial assets, Fair Value	134,855	134,663
Parent Entity | Due from subsidiaries | Previously stated
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount		140,597
Parent Entity | Other financial assets
Fair values of financial assets and financial liabilities
Financial assets, Carrying Amount	4,615	4,666
Financial assets, Fair Value	4,615	4,666
Parent Entity | Level 1
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	23,465	29,698
Financial Liabilities, Fair Value	2,849	1,748
Parent Entity | Level 1 | Collateral received
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	2,849	1,748
Parent Entity | Level 1 | Cash and balances with central banks
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	17,692	24,976
Parent Entity | Level 1 | Collateral paid
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	5,773	4,722
Parent Entity | Level 2
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	94,299	93,034
Financial Liabilities, Fair Value	669,326	656,981
Parent Entity | Level 2 | Deposits and other borrowings
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	463,440	459,841
Parent Entity | Level 2 | Other financial liabilities
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	23,146	22,969
Parent Entity | Level 2 | Debt issues
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	154,111	149,800
Parent Entity | Level 2 | Due to subsidiaries
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	6,553	6,933
Parent Entity | Level 2 | Loan capital
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	22,076	17,438
Parent Entity | Level 2 | Investment securities
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	4
Parent Entity | Level 2 | Due from subsidiaries
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	89,680	88,368
Parent Entity | Level 2 | Other financial assets
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	4,615	4,666
Parent Entity | Level 3
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	678,201	676,069
Financial Liabilities, Fair Value	141,714	136,157
Parent Entity | Level 3 | Deposits and other borrowings
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	1,251	1,213
Parent Entity | Level 3 | Due to subsidiaries
Fair values of financial assets and financial liabilities
Financial Liabilities, Fair Value	140,463	134,944
Parent Entity | Level 3 | Investment securities
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	23
Parent Entity | Level 3 | Loans
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	633,003	629,774
Parent Entity | Level 3 | Due from subsidiaries
Fair values of financial assets and financial liabilities
Financial assets, Fair Value	$ 45,175	$ 46,295

Offsetting financial assets a_3

Offsetting financial assets and financial liabilities (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Assets, Effects of Offsetting on Balance Sheet
Gross Amounts	$ 93,142	$ 46,922
Amounts Offset	(56,294)	(21,309)
Net Amounts Reported on the Balance Sheet	36,848	25,613
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Other Recognised Financial Instruments	(18,609)	(15,962)
Cash Collateral	(3,289)	(2,187)
Stock borrowing arrangements	18	14
Collateral paid related to futures margin	287	286
Financial Instrument Collateral	(6,943)	(1,404)
Net Amount	8,007	6,060
Liabilities, Effects of Offsetting on Balance Sheet
Gross Amounts	106,796	67,304
Amounts Offset	(56,294)	(21,309)
Net Amounts Reported on the Balance Sheet	50,502	45,995
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Other Recognised Financial Instruments	(18,609)	(15,962)
Cash Collateral	(5,625)	(4,487)
Financial Instrument Collateral	(12,533)	(11,066)
Net Amount	13,735	14,480
Amount of initial margin excluded		61
Collateral received
Liabilities, Effects of Offsetting on Balance Sheet
Gross Amounts	3,024
Amounts Offset	(2,972)
Net Amounts Reported on the Balance Sheet	52
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Net Amount	52
Derivative financial instruments
Liabilities, Effects of Offsetting on Balance Sheet
Gross Amounts	64,288	37,296
Amounts Offset	(35,192)	(12,889)
Net Amounts Reported on the Balance Sheet	29,096	24,407
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Other Recognised Financial Instruments	(18,609)	(15,962)
Cash Collateral	(5,622)	(4,487)
Financial Instrument Collateral	(1,932)	(1,544)
Net Amount	2,933	2,414
Repurchase agreements
Liabilities, Effects of Offsetting on Balance Sheet
Gross Amounts	10,604	9,522
Net Amounts Reported on the Balance Sheet	10,604	9,522
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Cash Collateral	(3)
Financial Instrument Collateral	(10,601)	(9,522)
Deposits and other borrowings
Liabilities, Effects of Offsetting on Balance Sheet
Gross Amounts	28,880	20,486
Amounts Offset	(18,130)	(8,420)
Net Amounts Reported on the Balance Sheet	10,750	12,066
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Net Amount	10,750	12,066
Collateral paid
Assets, Effects of Offsetting on Balance Sheet
Gross Amounts	6,643	4,196
Amounts Offset	(6,559)	(4,162)
Net Amounts Reported on the Balance Sheet	84	34
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Financial Instrument Collateral	(17)	(14)
Net Amount	67	20
Derivative financial instruments
Assets, Effects of Offsetting on Balance Sheet
Gross Amounts	61,464	32,828
Amounts Offset	(31,605)	(8,727)
Net Amounts Reported on the Balance Sheet	29,859	24,101
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Other Recognised Financial Instruments	(18,609)	(15,962)
Cash Collateral	(3,280)	(2,184)
Financial Instrument Collateral	(102)	(14)
Net Amount	7,868	5,941
Reverse repurchase agreements
Assets, Effects of Offsetting on Balance Sheet
Gross Amounts	6,833	1,379
Net Amounts Reported on the Balance Sheet	6,833	1,379
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Cash Collateral	(9)	(3)
Financial Instrument Collateral	(6,824)	(1,376)
Loans
Assets, Effects of Offsetting on Balance Sheet
Gross Amounts	18,202	8,519
Amounts Offset	(18,130)	(8,420)
Net Amounts Reported on the Balance Sheet	72	99
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Net Amount	72	99
Parent Entity
Assets, Effects of Offsetting on Balance Sheet
Gross Amounts	92,464	46,383
Amounts Offset	(56,294)	(21,309)
Net Amounts Reported on the Balance Sheet	36,170	25,074
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Other Recognised Financial Instruments	(18,526)	(15,862)
Cash Collateral	(2,851)	(1,751)
Stock borrowing arrangements	18	14
Collateral paid related to futures margin	286	285
Financial Instrument Collateral	(6,841)	(1,404)
Net Amount	7,952	6,057
Liabilities, Effects of Offsetting on Balance Sheet
Gross Amounts	106,567	67,126
Amounts Offset	(56,294)	(21,309)
Net Amounts Reported on the Balance Sheet	50,273	45,817
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Other Recognised Financial Instruments	(18,526)	(15,862)
Cash Collateral	(5,469)	(4,423)
Financial Instrument Collateral	(12,533)	(11,066)
Net Amount	13,745	14,466
Amount of initial margin excluded		61
Parent Entity | Collateral received
Liabilities, Effects of Offsetting on Balance Sheet
Gross Amounts	3,024
Amounts Offset	(2,972)
Net Amounts Reported on the Balance Sheet	52
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Net Amount	52
Parent Entity | Derivative financial instruments
Liabilities, Effects of Offsetting on Balance Sheet
Gross Amounts	64,059	37,118
Amounts Offset	(35,192)	(12,889)
Net Amounts Reported on the Balance Sheet	28,867	24,229
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Other Recognised Financial Instruments	(18,526)	(15,862)
Cash Collateral	(5,466)	(4,423)
Financial Instrument Collateral	(1,932)	(1,544)
Net Amount	2,943	2,400
Parent Entity | Repurchase agreements
Liabilities, Effects of Offsetting on Balance Sheet
Gross Amounts	10,604	9,522
Net Amounts Reported on the Balance Sheet	10,604	9,522
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Cash Collateral	(3)
Financial Instrument Collateral	(10,601)	(9,522)
Parent Entity | Deposits and other borrowings
Liabilities, Effects of Offsetting on Balance Sheet
Gross Amounts	28,880	20,486
Amounts Offset	(18,130)	(8,420)
Net Amounts Reported on the Balance Sheet	10,750	12,066
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Net Amount	10,750	12,066
Parent Entity | Collateral paid
Assets, Effects of Offsetting on Balance Sheet
Gross Amounts	6,643	4,196
Amounts Offset	(6,559)	(4,162)
Net Amounts Reported on the Balance Sheet	84	34
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Financial Instrument Collateral	(17)	(14)
Net Amount	67	20
Parent Entity | Derivative financial instruments
Assets, Effects of Offsetting on Balance Sheet
Gross Amounts	60,888	32,289
Amounts Offset	(31,605)	(8,727)
Net Amounts Reported on the Balance Sheet	29,283	23,562
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Other Recognised Financial Instruments	(18,526)	(15,862)
Cash Collateral	(2,842)	(1,748)
Financial Instrument Collateral	(102)	(14)
Net Amount	7,813	5,938
Parent Entity | Reverse repurchase agreements
Assets, Effects of Offsetting on Balance Sheet
Gross Amounts	6,731	1,379
Net Amounts Reported on the Balance Sheet	6,731	1,379
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Cash Collateral	(9)	(3)
Financial Instrument Collateral	(6,722)	(1,376)
Parent Entity | Loans
Assets, Effects of Offsetting on Balance Sheet
Gross Amounts	18,202	8,519
Amounts Offset	(18,130)	(8,420)
Net Amounts Reported on the Balance Sheet	72	99
Amounts Subject to Enforceable Netting Arrangements But Not Offset
Net Amount	$ 72	$ 99

Securitisation, covered bonds_3

Securitisation, covered bonds and other transferred assets (Details) $ in Millions	Sep. 30, 2019AUD ($)item	Sep. 30, 2018AUD ($)
Securitisation, covered bonds and other transferred assets
Carrying amount of transferred assets	$ 66,651	$ 63,211
Carrying amount of associated liabilities	56,831	52,544
Fair value of transferred assets	8,268	7,662
Fair value of associated liabilities	8,177	7,565
Net fair value position	91	97
Securitisation - own assets
Securitisation, covered bonds and other transferred assets
Undrawn funding and liquidity facilities	537	517
Carrying amount of transferred assets	8,221	7,631
Carrying amount of associated liabilities	8,190	7,588
Fair value of transferred assets	8,268	7,662
Fair value of associated liabilities	8,177	7,565
Net fair value position	$ 91	97
Covered bonds
Securitisation, covered bonds and other transferred assets
Number of covered bond programs | item	2
Carrying amount of transferred assets	$ 44,676	43,088
Carrying amount of associated liabilities	38,037	35,434
Repurchase agreements
Securitisation, covered bonds and other transferred assets
Carrying amount of transferred assets	13,754	12,492
Carrying amount of associated liabilities	10,604	9,522
Parent Entity
Securitisation, covered bonds and other transferred assets
Carrying amount of transferred assets	153,140	145,941
Carrying amount of associated liabilities	144,910	136,518
Fair value of transferred assets	101,871	97,291
Fair value of associated liabilities	100,268	96,473
Net fair value position	1,603	818
Parent Entity | Securitisation - own assets
Securitisation, covered bonds and other transferred assets
Carrying amount of transferred assets	101,689	97,259
Carrying amount of associated liabilities	101,146	96,728
Fair value of transferred assets	101,871	97,291
Fair value of associated liabilities	100,268	96,473
Net fair value position	1,603	818
Parent Entity | Covered bonds
Securitisation, covered bonds and other transferred assets
Carrying amount of transferred assets	37,697	36,190
Carrying amount of associated liabilities	33,160	30,268
Parent Entity | Repurchase agreements
Securitisation, covered bonds and other transferred assets
Carrying amount of transferred assets	13,754	12,492
Carrying amount of associated liabilities	$ 10,604	$ 9,522

Intangible assets - Useful life

Intangible assets - Useful life (Details)	12 Months Ended
	Sep. 30, 2019
Computer software | Minimum
Intangible assets
Useful life (in years)	3 years
Computer software | Maximum
Intangible assets
Useful life (in years)	10 years
Core deposit intangibles
Intangible assets
Useful life (in years)	9 years

Intangible assets - Changes (De

Intangible assets - Changes (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Goodwill
Goodwill, opening balance	$ 8,890	$ 9,012
Disposals		(15)
Impairment		(105)
Other adjustments	5	(2)
Goodwill, closing balance	8,895	8,890
Hastings
Goodwill
Disposals		(15)
Impairment		(105)
Computer software
Intangible assets other than goodwill
Intangible assets, opening balance	2,177	1,916
Additions	906	882
Impairment	(25)	(2)
Amortisation	(694)	(618)
Other adjustments	1	(1)
Intangible assets, closing balance	2,365	2,177
Brand Names
Intangible assets other than goodwill
Intangible assets, opening balance	670	670
Intangible assets, closing balance	670	670
Core deposit intangibles
Intangible assets other than goodwill
Intangible assets, opening balance		21
Amortisation		(21)
Other intangible assets
Intangible assets other than goodwill
Intangible assets, opening balance	26	33
Amortisation	(3)	(7)
Intangible assets, closing balance	23	26
Parent Entity
Goodwill
Goodwill, opening balance	6,844	6,844
Goodwill, closing balance	6,844	6,844
Parent Entity | Computer software
Intangible assets other than goodwill
Intangible assets, opening balance	2,014	1,758
Additions	846	823
Impairment	(25)	(2)
Amortisation	(628)	(565)
Intangible assets, closing balance	2,207	2,014
Parent Entity | Brand Names
Intangible assets other than goodwill
Intangible assets, opening balance	636	636
Intangible assets, closing balance	$ 636	636
Parent Entity | Core deposit intangibles
Intangible assets other than goodwill
Intangible assets, opening balance		21
Amortisation		$ (21)

Intangible assets - Balances (D

Intangible assets - Balances (Details) - AUD ($) $ in Millions		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Total intangible assets
Goodwill		$ 8,895	$ 8,890	$ 9,012
Total intangible assets	[1]	11,953	11,763
Computer software
Total intangible assets
Carrying amount		2,365	2,177	1,916
Computer software | Gross amount
Total intangible assets
Carrying amount		6,395	5,727
Computer software | Accumulated amortisation and impairment
Total intangible assets
Carrying amount		(4,030)	(3,550)
Brand Names
Total intangible assets
Carrying amount		670	670	670
Core deposit intangibles
Total intangible assets
Carrying amount				21
Core deposit intangibles | Gross amount
Total intangible assets
Carrying amount			1,494
Core deposit intangibles | Accumulated amortisation and impairment
Total intangible assets
Carrying amount			(1,494)
Other intangible assets
Total intangible assets
Carrying amount		23	26	33
Other intangible assets | Gross amount
Total intangible assets
Carrying amount		144	391
Other intangible assets | Accumulated amortisation and impairment
Total intangible assets
Carrying amount		(121)	(365)
Parent Entity
Total intangible assets
Goodwill		6,844	6,844	6,844
Total intangible assets	[1]	9,687	9,494
Parent Entity | Computer software
Total intangible assets
Carrying amount		2,207	2,014	1,758
Parent Entity | Computer software | Gross amount
Total intangible assets
Carrying amount		5,464	4,861
Parent Entity | Computer software | Accumulated amortisation and impairment
Total intangible assets
Carrying amount		(3,257)	(2,847)
Parent Entity | Brand Names
Total intangible assets
Carrying amount		$ 636	636	636
Parent Entity | Core deposit intangibles
Total intangible assets
Carrying amount				$ 21
Parent Entity | Core deposit intangibles | Gross amount
Total intangible assets
Carrying amount			1,279
Parent Entity | Core deposit intangibles | Accumulated amortisation and impairment
Total intangible assets
Carrying amount			(1,279)
Parent Entity | Other intangible assets | Gross amount
Total intangible assets
Carrying amount			160
Parent Entity | Other intangible assets | Accumulated amortisation and impairment
Total intangible assets
Carrying amount			$ (160)
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Intangible assets - Goodwill al

Intangible assets - Goodwill allocation (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Goodwill allocation
Total goodwill	$ 8,895	$ 8,890	$ 9,012
Significant assumptions used in recoverable amount for goodwill
Group's equity rate	11.00%	11.00%
Consumer
Goodwill allocation
Total goodwill	$ 4,060	$ 3,359
Business
Goodwill allocation
Total goodwill	3,860	2,513
Westpac Institutional Bank
Goodwill allocation
Total goodwill	487	487
BT Financial Group (Australia)
Goodwill allocation
Total goodwill		2,048
New Zealand
Goodwill allocation
Total goodwill	$ 488	$ 483
Australia
Significant assumptions used in recoverable amount for goodwill
Group's adjusted pre-tax equity rate	15.70%	15.70%
New Zealand
Significant assumptions used in recoverable amount for goodwill
Group's adjusted pre-tax equity rate	15.30%	15.30%
Parent Entity
Goodwill allocation
Total goodwill	$ 6,844	$ 6,844	$ 6,844
Parent Entity | Consumer
Goodwill allocation
Total goodwill	3,144	3,144
Parent Entity | Business
Goodwill allocation
Total goodwill	3,213	2,378
Parent Entity | Westpac Institutional Bank
Goodwill allocation
Total goodwill	$ 487	487
Parent Entity | BT Financial Group (Australia)
Goodwill allocation
Total goodwill		$ 835

Operating lease commitments (De

Operating lease commitments (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating leases
Total lease commitments	$ 3,745	$ 3,953
Future minimum lease payments receivable from non-cancellable sub-leases	7	7
Within 1 Year
Operating leases
Total lease commitments	608	570
Over 1 Year to 5 Years
Operating leases
Total lease commitments	1,716	1,564
Over 5 Years
Operating leases
Total lease commitments	1,421	1,819
Parent Entity
Operating leases
Total lease commitments	3,443	3,314
Future minimum lease payments receivable from non-cancellable sub-leases	7	6
Parent Entity | Within 1 Year
Operating leases
Total lease commitments	555	498
Parent Entity | Over 1 Year to 5 Years
Operating leases
Total lease commitments	1,583	1,356
Parent Entity | Over 5 Years
Operating leases
Total lease commitments	$ 1,305	$ 1,460

Provisions, contingent liabil_3

Provisions, contingent liabilities, contingent assets and credit commitments - Provisions (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Reconciliation of changes in other provisions
Balance at beginning of the year	$ 1,928
Impact on adoption of AASB 9		$ 98
Restated opening balance		2,026
Additions	2,777
Utilisation	(1,519)
Reversal of unutilised provisions	(114)
Other	(1)
Balance at end of the year	3,169
Long service leave
Reconciliation of changes in other provisions
Balance at beginning of the year	417
Restated opening balance		417
Additions	90
Utilisation	(51)
Balance at end of the year	456
Annual leave and other employee benefits
Reconciliation of changes in other provisions
Balance at beginning of the year	699
Restated opening balance		699
Additions	866
Utilisation	(931)
Reversal of unutilised provisions	(20)
Balance at end of the year	614
Litigation and non-lending losses
Reconciliation of changes in other provisions
Balance at beginning of the year	53
Restated opening balance		53
Additions	66
Utilisation	(81)
Balance at end of the year	38
Provisions for credit commitments
Reconciliation of changes in other provisions
Balance at beginning of the year	239
Impact on adoption of AASB 9		98
Restated opening balance		337
Reversal of unutilised provisions	(32)
Balance at end of the year	305
Leasehold premises
Reconciliation of changes in other provisions
Balance at beginning of the year	24
Restated opening balance		24
Additions	7
Utilisation	(7)
Balance at end of the year	24
Restructuring provisions
Reconciliation of changes in other provisions
Balance at beginning of the year	27
Restated opening balance		27
Additions	259
Utilisation	(125)
Reversal of unutilised provisions	(1)
Balance at end of the year	160
Compliance, regulation and remediation provisions
Reconciliation of changes in other provisions
Balance at beginning of the year	469
Restated opening balance		469
Additions	1,489
Utilisation	(324)
Reversal of unutilised provisions	(61)
Other	(1)
Balance at end of the year	1,572
Parent Entity
Reconciliation of changes in other provisions
Balance at beginning of the year	1,766
Impact on adoption of AASB 9		95
Restated opening balance		1,861
Additions	2,658
Utilisation	(1,436)
Reversal of unutilised provisions	(103)
Balance at end of the year	2,980
Parent Entity | Long service leave
Reconciliation of changes in other provisions
Balance at beginning of the year	386
Restated opening balance		386
Additions	90
Utilisation	(48)
Balance at end of the year	428
Parent Entity | Annual leave and other employee benefits
Reconciliation of changes in other provisions
Balance at beginning of the year	639
Restated opening balance		639
Additions	813
Utilisation	(876)
Reversal of unutilised provisions	(19)
Balance at end of the year	557
Parent Entity | Litigation and non-lending losses
Reconciliation of changes in other provisions
Balance at beginning of the year	37
Restated opening balance		37
Additions	53
Utilisation	(67)
Balance at end of the year	23
Parent Entity | Provisions for credit commitments
Reconciliation of changes in other provisions
Balance at beginning of the year	206
Impact on adoption of AASB 9		95
Restated opening balance		301
Reversal of unutilised provisions	(26)
Balance at end of the year	275
Parent Entity | Leasehold premises
Reconciliation of changes in other provisions
Balance at beginning of the year	24
Restated opening balance		24
Additions	7
Utilisation	(7)
Balance at end of the year	24
Parent Entity | Restructuring provisions
Reconciliation of changes in other provisions
Balance at beginning of the year	27
Restated opening balance		27
Additions	259
Utilisation	(125)
Reversal of unutilised provisions	(1)
Balance at end of the year	160
Parent Entity | Compliance, regulation and remediation provisions
Reconciliation of changes in other provisions
Balance at beginning of the year	447
Restated opening balance		$ 447
Additions	1,436
Utilisation	(313)
Reversal of unutilised provisions	(57)
Balance at end of the year	$ 1,513

Provisions, contingent liabil_4

Provisions, contingent liabilities, contingent assets and credit commitments - Legislative liabilities (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
New South Wales
Legislative liabilities
Actuarial assessment liability	$ 22	$ 20
Victoria
Legislative liabilities
Actuarial assessment liability	7	9
South Australia
Legislative liabilities
Actuarial assessment liability	6	5
Queensland
Legislative liabilities
Actuarial assessment liability	1	2
Australian Capital Territory
Legislative liabilities
Actuarial assessment liability		1
Western Australia
Legislative liabilities
Actuarial assessment liability	1	2
Tasmania
Legislative liabilities
Actuarial assessment liability	$ 1	$ 1

Provisions, contingent liabil_5

Provisions, contingent liabilities, contingent assets and credit commitments - Compliance, regulation and remediation provisions (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Provisions
Amount provided	$ 3,169	$ 1,928
Additional provision	2,777
Provision for customer refunds	276
Compliance, regulation and remediation provisions
Provisions
Amount provided	1,572	469
Additional provision	1,489
Ongoing advice service fees charged by salaried financial planners
Provisions
Total fees received			$ 594
Percentage of fees estimated to be refunded			26.00%
Ongoing advice service fees charged by authorised representatives of Securitor and Magnitude
Provisions
Amount provided	$ 606
Total fees received		$ 936
Percentage of fees estimated to be refunded		32.00%

Provisions, contingent liabil_6

Provisions, contingent liabilities, contingent assets and credit commitments - Contingent liabilities (Details) - AUD ($)	Sep. 30, 2019	Sep. 30, 2018
Contingent liabilities
Provision recognised	$ 3,169,000,000	$ 1,928,000,000
Litigation related to certain Westpac home loans
Contingent liabilities
Provision recognised	0
Class action alleging misconduct related to the bank bill swap reference rate
Contingent liabilities
Provision recognised	0
Class action on behalf of customers who obtained insurance issued by WLIS
Contingent liabilities
Provision recognised	0
Class action related to responsible lending obligations and certain home loans
Contingent liabilities
Provision recognised	0
Guarantees
Contingent liabilities
Maximum deposits insured under FCS	$ 250,000
Maximum percentage of FCS levy	0.50%
Parent Entity
Contingent liabilities
Provision recognised	$ 2,980,000,000	$ 1,766,000,000
Parent Entity | Guarantees
Contingent liabilities
Maximum contingent liability	$ 40,000,000

Provisions, contingent liabil_7

Provisions, contingent liabilities, contingent assets and credit commitments - Undrawn credit commitments (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Undrawn credit commitments
Letters of credit and guarantees	$ 15,150	$ 15,585
Commitments to extend credit	176,002	174,658
Other	188	154
Total undrawn credit commitments	191,340	190,397
Commitments to customers, which had not yet been accepted	5,000	5,700
Within 1 Year
Undrawn credit commitments
Letters of credit and guarantees	7,334
Commitments to extend credit	41,488
Other	125
Total undrawn credit commitments	48,947
Over 1 to 3 years
Undrawn credit commitments
Letters of credit and guarantees	4,639
Commitments to extend credit	58,402
Total undrawn credit commitments	63,041
Over 3 to 5 Years
Undrawn credit commitments
Letters of credit and guarantees	719
Commitments to extend credit	12,917
Total undrawn credit commitments	13,636
Over 5 Years
Undrawn credit commitments
Letters of credit and guarantees	2,458
Commitments to extend credit	63,195
Other	63
Total undrawn credit commitments	65,716
Parent Entity
Undrawn credit commitments
Letters of credit and guarantees	14,583	14,957
Commitments to extend credit	153,716	152,943
Other	188	99
Total undrawn credit commitments	$ 168,487	$ 167,999

Shareholders' equity - Share ca

Shareholders' equity - Share capital (Details) - AUD ($) $ in Millions		Sep. 30, 2019	Sep. 30, 2018
Shareholders' equity
Ordinary share capital, fully paid	[1]	$ 37,508	$ 36,054
Restricted Share Plan (RSP) treasury shares held		(572)	(505)
Other treasury shares held		19	12
Total treasury shares held	[1]	(553)	(493)
Total share capital		36,955	35,561
Non-controlling interests	[1]	$ 53	$ 52
Number of unvested RSP treasury shares held		4,784,213	3,943,660
Number of other treasury shares held		1,721,532	2,029,795
Parent Entity
Shareholders' equity
Ordinary share capital, fully paid	[1]	$ 37,508	$ 36,054
Restricted Share Plan (RSP) treasury shares held		(572)	(505)
Other treasury shares held		(3)	(3)
Total treasury shares held	[1]	(575)	(508)
Total share capital		36,933	35,546
Non-controlling interests	[1]
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Shareholders' equity - Movement

Shareholders' equity - Movement in number of ordinary shares (Details) - $ / shares	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Ordinary shares
Shareholders' equity
Par value	$ 0
Number of votes per ordinary shares	1
Reconciliation of movement in number of ordinary shares
Number of shares outstanding at beginning of period	3,434,796,711	3,394,364,279
Dividend reinvestment plan	55,132,062	21,242,667
Conversion of Westpac Convertible Preference Shares		19,189,765
Number of shares outstanding at end of period	3,489,928,773	3,434,796,711	3,394,364,279
Dividend reinvestment plan - price per share for current year interim dividend	$ 27.36	$ 28.11
Dividend reinvestment plan - price per share for prior year final dividend		$ 25.82	$ 31.62
Conversion of Westpac Convertible Preference Shares - conversion Per Share	$ 29.49
Parent Entity
Reconciliation of movement in number of ordinary shares
Number of shares outstanding at beginning of period	3,434,796,711	3,394,364,279
Dividend reinvestment plan	55,132,062	21,242,667
Conversion of Westpac Convertible Preference Shares		19,189,765
Number of shares outstanding at end of period	3,489,928,773	3,434,796,711	3,394,364,279

Shareholders' equity - Ordinary

Shareholders' equity - Ordinary shares purchased on market (Details) - $ / shares	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Share-based payments
Number of treasury shares sold	(308,263)
Net number of ordinary shares purchased/(sold) on market	3,682,984
Treasury shares sold - average price	$ 26.19
Employee Share Plan (ESP)
Share-based payments
Number of ordinary shares purchased on market	1,061,442
Average share price, ordinary shares	$ 25.27
RSP
Share-based payments
Number of ordinary shares purchased on market	2,707,931
Average share price, ordinary shares	$ 25.55
Westpac Performance Plan (WPP) | Share rights
Share-based payments
Number of ordinary shares purchased on market	184,043
Average share price, ordinary shares	$ 26.73
Westpac Long Term Variable Reward Plan (LTVR) | Share options
Share-based payments
Number of ordinary shares purchased on market	37,831
Average share price, ordinary shares	$ 27.68
Average exercise price, options	$ 23.40	$ 24.23
Parent Entity
Share-based payments
Number of treasury shares sold	(308,263)
Net number of ordinary shares purchased/(sold) on market	3,682,984
Treasury shares sold - average price	$ 26.19
Parent Entity | Employee Share Plan (ESP)
Share-based payments
Number of ordinary shares purchased on market	1,061,442
Average share price, ordinary shares	$ 25.27
Parent Entity | RSP
Share-based payments
Number of ordinary shares purchased on market	2,707,931
Average share price, ordinary shares	$ 25.55
Parent Entity | Westpac Performance Plan (WPP) | Share rights
Share-based payments
Number of ordinary shares purchased on market	184,043
Average share price, ordinary shares	$ 26.73
Parent Entity | Westpac Long Term Variable Reward Plan (LTVR) | Share options
Share-based payments
Number of ordinary shares purchased on market	37,831
Average share price, ordinary shares	$ 27.68

Shareholders' equity - Reconcil

Shareholders' equity - Reconciliation of movement in reserves (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019		Sep. 30, 2018	Sep. 30, 2017
Available-for-sale securities reserve
Opening balance		$ 37		$ 64
Impact on adoption of AASB 9		(37)
Net gains/(losses) from changes in fair value				(104)
Income tax effect				34
Transferred to income statements			[1]	66	$ (3)
Income tax effect				(25)
Exchange differences				2
Closing balance				37	64
Debt securities at FVOCI reserve
Opening balance
Impact on adoption of AASB 9		33
Net gains/(losses) from changes in fair value		(47)
Income tax effect		12
Transferred to income statement		(29)	[1]
Income tax effect		8
Exchange differences		1
Closing balance		(22)
Equity securities at FVOCI reserve
Opening balance
Impact on adoption of AASB 9		6
Net gains/(losses) from changes in fair value		11
Closing balance		17
Share-based payment reserve
Opening balance		1,534		1,431
Share-based payment expense		108	[1]	103	98
Closing balance		1,642		1,534	1,431
Cash flow hedge reserve
Opening balance		(125)		(154)
Net gains/(losses) from changes in fair value		(203)	[1]	(161)	(91)
Income tax effect		60		47
Cash flow hedging instruments		197	[1]	203	115
Income tax effect		(58)		(60)
Closing balance		(129)		(125)	(154)
Foreign currency translation reserve
Opening balance		(351)		(529)
Exchange differences on translation of foreign operations (net of associated hedges)		311		164
Gains/losses on net investment hedges		(129)		17
Transferred to income statements		(10)	[1]	(3)
Closing balance		(179)		(351)	(529)
Other reserves
Opening balance		(18)		(18)
Closing balance		(18)		(18)	(18)
Total other reserves	[1]	1,311		1,077
Parent Entity
Available-for-sale securities reserve
Opening balance		24		70
Impact on adoption of AASB 9		(24)
Net gains/(losses) from changes in fair value				(34)
Income tax effect				13
Transferred to income statements			[1]	(33)
Income tax effect				6
Exchange differences				2
Closing balance				24	70
Debt securities at FVOCI reserve
Opening balance
Impact on adoption of AASB 9		25
Net gains/(losses) from changes in fair value		(40)
Income tax effect		10
Transferred to income statement		(29)	[1]
Income tax effect		8
Exchange differences		1
Closing balance		(25)
Equity securities at FVOCI reserve
Opening balance
Impact on adoption of AASB 9		1
Net gains/(losses) from changes in fair value		(2)
Closing balance		(1)
Share-based payment reserve
Opening balance		1,425		1,322
Share-based payment expense		108		103
Closing balance		1,533		1,425	1,322
Cash flow hedge reserve
Opening balance		(69)		(94)
Net gains/(losses) from changes in fair value		(121)	[1]	(125)
Income tax effect		36		38
Cash flow hedging instruments		128	[1]	160
Income tax effect		(39)		(48)
Closing balance		(65)		(69)	(94)
Foreign currency translation reserve
Opening balance		(307)		(481)
Exchange differences on translation of foreign operations (net of associated hedges)		214		175
Gains/losses on net investment hedges		(52)		(1)
Transferred to income statements			[1]
Closing balance		(145)		(307)	(481)
Other reserves
Opening balance		41		41
Closing balance		41		41	$ 41
Total other reserves	[1]	$ 1,338		$ 1,114
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Capital adequacy (Details)

Capital adequacy (Details)	Sep. 30, 2019
Capital adequacy
Minimum requirement of Common Equity Tier 1 (CET1)	4.5
Minimum requirement of Tier 1 capital ratio	6
Minimum requirement of Total Regulatory Capital ratio	8
Capital conservation buffer	3.5
Capital conservation buffer, surcharge	1
Countercyclical capital buffer	0
Common Equity Tier 1, interim preferred ratio	10.5

Dividends (Details)

Dividends (Details) $ / shares in Units, $ / shares in Units, $ in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2019NZD ($)$ / shares	Sep. 30, 2019AUD ($)$ / shares	Sep. 30, 2018NZD ($)$ / shares	Sep. 30, 2018AUD ($)$ / shares	Sep. 30, 2017NZD ($)$ / shares	Sep. 30, 2017AUD ($)$ / shares	Sep. 30, 2016
Dividends
Dividends not recognised at year end and proposed final dividend 00 cents per share (2018: 94 cents, 2017: 94 cents) all fully franked at 30%		$ 2,791		$ 3,227		$ 3,186
Proposed final dividend per share | $ / shares		$ 0.80		$ 0.94		$ 0.94
Dividend tax rate (as a percent)	30.00%	30.00%	30.00%	30.00%	30.00%	30.00%	30.00%
New Zealand
Dividends
Imputation credits per share | $ / shares	$ 0.07		$ 0.07		$ 0.07
Parent Entity
Dividends
Dividends not recognised at year end and proposed final dividend 00 cents per share (2018: 94 cents, 2017: 94 cents) all fully franked at 30%		$ 2,792		$ 3,229
Dividend tax rate (as a percent)	30.00%	30.00%	30.00%	30.00%	30.00%	30.00%
Parent Entity | Australia
Dividends
Franking credits		$ 1,558		$ 1,357		$ 1,063
Parent Entity | New Zealand
Dividends
Imputation credits	$ 860		$ 530		$ 375

Investments in subsidiaries a_3

Investments in subsidiaries and associates (Details) $ in Millions	12 Months Ended
	Sep. 30, 2019AUD ($)item	Sep. 30, 2018AUD ($)
Investments in subsidiaries and associates
Gain (loss) on businesses disposed during the year	$ 3	$ (9)
Number of associates material to the Group | item	0
St.George Motor Finance Limited
Investments in subsidiaries and associates
Percentage of equity owned by parent	75.00%	75.00%
Westpac Bank-PNG-Limited
Investments in subsidiaries and associates
Percentage of equity owned by parent	89.90%	89.90%
Westpac NZ Covered Bond Limited
Investments in subsidiaries and associates
Percentage of equity owned by parent	19.00%	19.00%
Westpac NZ Securitisation Limited
Investments in subsidiaries and associates
Percentage of equity owned by parent	19.00%	19.00%
Ascalon Capital Managers (Asia) Limited and Ascalon Capital Managers Limited
Investments in subsidiaries and associates
Gain (loss) on businesses disposed during the year	$ 3
Hastings offshore subsidiaries
Investments in subsidiaries and associates
Gain (loss) on businesses disposed during the year		$ (9)

Structured entities (Details)

Structured entities (Details) - AUD ($) $ in Millions	Sep. 30, 2019	Sep. 30, 2018
Structured entities
Total on-balance sheet exposures	$ 59,672	$ 61,068
Total notional amounts of off-balance sheet exposures	15,345	13,193
Maximum exposure to loss	75,017	74,261
Size of structured entities	262,672	253,049
Trading securities and financial assets measured at FVIS
Structured entities
Total on-balance sheet exposures	2,109	2,247
Investment securities
Structured entities
Total on-balance sheet exposures	6,940
Available-for-sale securities
Structured entities
Total on-balance sheet exposures		7,352
Loans
Structured entities
Total on-balance sheet exposures	43,805	44,877
Life insurance assets
Structured entities
Total on-balance sheet exposures	6,764	6,545
Other
Structured entities
Total on-balance sheet exposures	54	47
Investment in Third Party Mortgage and Other Asset-Backed Securities
Structured entities
Total on-balance sheet exposures	8,767	9,460
Maximum exposure to loss	8,767	9,460
Size of structured entities	66,015	58,976
Investment in Third Party Mortgage and Other Asset-Backed Securities | Trading securities and financial assets measured at FVIS
Structured entities
Total on-balance sheet exposures	1,827	2,108
Investment in Third Party Mortgage and Other Asset-Backed Securities | Investment securities
Structured entities
Total on-balance sheet exposures	6,940
Investment in Third Party Mortgage and Other Asset-Backed Securities | Available-for-sale securities
Structured entities
Total on-balance sheet exposures		7,352
Financing to Securitisation Vehicles
Structured entities
Total on-balance sheet exposures	20,979	21,977
Total notional amounts of off-balance sheet exposures	5,157	5,145
Maximum exposure to loss	26,136	27,122
Size of structured entities	26,136	27,122
Financing to Securitisation Vehicles | Loans
Structured entities
Total on-balance sheet exposures	20,979	21,977
Group Managed Funds
Structured entities
Total on-balance sheet exposures	4,948	4,755
Total notional amounts of off-balance sheet exposures	102	60
Maximum exposure to loss	5,050	4,815
Size of structured entities	71,538	66,524
Group Managed Funds | Loans
Structured entities
Total on-balance sheet exposures	9	6
Group Managed Funds | Life insurance assets
Structured entities
Total on-balance sheet exposures	4,885	4,702
Group Managed Funds | Other
Structured entities
Total on-balance sheet exposures	54	47
Interest in Other Structured Entities
Structured entities
Total on-balance sheet exposures	24,978	24,876
Total notional amounts of off-balance sheet exposures	10,086	7,988
Maximum exposure to loss	35,064	32,864
Size of structured entities	98,983	100,427
Interest in Other Structured Entities | Trading securities and financial assets measured at FVIS
Structured entities
Total on-balance sheet exposures	282	139
Interest in Other Structured Entities | Loans
Structured entities
Total on-balance sheet exposures	22,817	22,894
Interest in Other Structured Entities | Life insurance assets
Structured entities
Total on-balance sheet exposures	$ 1,879	$ 1,843

Share-based payments - Summary

Share-based payments - Summary of plans (Details)	12 Months Ended
	Sep. 30, 2019AUD ($)$ / shares
Westpac Long Term Variable Reward Plan (LTVR)
Share-based payments
Performance period	4 years
Holding lock period	1 year
Vesting period	4 years
Westpac Long Term Variable Reward Plan (LTVR) | Awards prior to 2011
Share-based payments
Performance period	3 years
Westpac Long Term Variable Reward Plan (LTVR) | 2011 to 2014 Award Dates
Share-based payments
Performance period	3 years
Vesting period	3 years
Westpac Long Term Variable Reward Plan (LTVR) | 2015 Awards
Share-based payments
Performance period	4 years
Performance period, cash EPS (CAGR)	3 years
Holding lock period	1 year
Westpac Long Term Variable Reward Plan (LTVR) | Share rights
Share-based payments
Cost of shares allocated	$ 0
Exercise price | $ / shares	$ 0
Westpac Performance Plan (WPP) | Share rights
Share-based payments
Cost of shares allocated	$ 0
Exercise price | $ / shares	$ 0
RSP
Share-based payments
Cost of shares allocated	$ 0
Term of award	10 years
Employee Share Plan (ESP)
Share-based payments
Cost of shares allocated	$ 0
Threshold amount of shares allocated at free of cost per employee	$ 1,000
Service conditions	3 years
Vesting period	1 year

Share-based payments - Westpac

Share-based payments - Westpac Long Term Incentive Plan, Westpac Performance Plan (WPP) & Restricted Share Plan (RSP) (Details)	Oct. 01, 2018EquityInstruments	Sep. 30, 2019AUD ($)EquityInstruments$ / shares	Sep. 30, 2018AUD ($)EquityInstruments$ / shares
Westpac Long Term Variable Reward Plan (LTVR) | Share options
Share options
Outstanding at the beginning of the year	52,350	52,350	256,840
Options exercised during the year		37,831	103,686
Lapsed during the year		14,519	100,804
Outstanding at the end of the year			52,350
Outstanding and Exercisable at the end of the year			52,350
Weighted Average Exercise Price
Outstanding at the beginning of the year	23.40%	23.40%	26.36%
Exercised during the year | $ / shares		$ 23.40	$ 24.23
Outstanding at the end of the year			23.40%
Outstanding and Exercisable at the end of the year | $ / shares			$ 23.40
Weighted average remaining contractual life			0 years
Westpac Long Term Variable Reward Plan (LTVR) | Share rights
Equity instruments other than options
Outstanding at the beginning of the year	4,712,843	4,712,843	5,231,904
Granted during the year		1,169,704	808,290
Equity instruments exercised during the year			2,929
Lapsed during the year		1,327,958	1,324,422
Outstanding at the end of the year		4,554,589	4,712,843
Outstanding and Exercisable at the end of the year		3,719	3,719
Weighted average remaining contractual life	10 years 10 months 24 days	12 years 3 months 18 days
Weighted average fair value at grant date | $		$ 15.62	$ 17.86
Westpac Performance Plan (WPP) | Share rights
Equity instruments other than options
Outstanding at the beginning of the year	673,889	673,889	619,779
Granted during the year		385,646	246,902
Equity instruments exercised during the year		184,043	156,691
Lapsed during the year		89,026	36,101
Outstanding at the end of the year		786,466	673,889
Outstanding and Exercisable at the end of the year		130,946	124,525
Weighted average remaining contractual life		12 years 9 months 18 days	12 years 4 months 24 days
Weighted average fair value at grant date | $		$ 23.08	$ 27.83
Westpac Performance Plan (WPP) | Share rights | One-year vesting period
Equity instruments other than options
Outstanding at the beginning of the year	140,531	140,531
Granted during the year		145,296
Equity instruments exercised during the year		82,287
Lapsed during the year		5,652
Outstanding at the end of the year		197,888	140,531
Outstanding and Exercisable at the end of the year		59,413
Westpac Performance Plan (WPP) | Share rights | Two-year vesting period
Equity instruments other than options
Outstanding at the beginning of the year	253,390	253,390
Granted during the year		146,139
Equity instruments exercised during the year		78,180
Lapsed during the year		31,440
Outstanding at the end of the year		289,909	253,390
Outstanding and Exercisable at the end of the year		48,833
Westpac Performance Plan (WPP) | Share rights | Three-year vesting period
Equity instruments other than options
Outstanding at the beginning of the year	117,739	117,739
Granted during the year		20,169
Equity instruments exercised during the year		23,576
Lapsed during the year		19,083
Outstanding at the end of the year		95,249	117,739
Outstanding and Exercisable at the end of the year		22,700
Westpac Performance Plan (WPP) | Share rights | Four-year vesting period
Equity instruments other than options
Outstanding at the beginning of the year	162,229	162,229
Granted during the year		74,042
Lapsed during the year		32,851
Outstanding at the end of the year		203,420	162,229
RSP
Equity instruments other than options
Outstanding at the beginning of the year	4,189,644	4,189,644	4,204,753
Granted during the year		2,861,262	2,479,975
Released		2,214,509	2,225,245
Forfeited during the year		63,226	269,839
Outstanding at the end of the year		4,773,171	4,189,644
RSP | Granted prior to October 2009
Equity instruments other than options
Outstanding at the beginning of the year	346,732	346,732
Released		346,732
Outstanding at the end of the year			346,732
Weighted average remaining contractual life		10 years
RSP | Granted subsequent to October 2009
Equity instruments other than options
Outstanding at the beginning of the year	3,842,912	3,842,912
Granted during the year		2,861,262
Released		1,867,777
Forfeited during the year		63,226
Outstanding at the end of the year		4,773,171	3,842,912
RSP | Share rights
Equity instruments other than options
Weighted average fair value at grant date | $		$ 25.20	$ 31.29

Share-based payments - Employee

Share-based payments - Employee Share Plan (Details) - Employee Share Plan (ESP)	12 Months Ended
	Sep. 30, 2019AUD ($)EquityInstrumentsemployee$ / sharesshares	Sep. 30, 2018AUD ($)EquityInstrumentsemployee$ / sharesshares
Share-based payments
Number of Participants | employee	27,245	27,557
Average Number of Shares Allocated per Participant | shares	39	31
Total Number of Shares Allocated | EquityInstruments	1,062,555	854,267
Market Price per Share | $ / shares	$ 25.35	$ 31.80
Total Fair Value	$ 26,935,769	$ 27,165,691
Other employee benefits	$ 26,000,000	$ 28,000,000

Share-based payments - Fair val

Share-based payments - Fair value assumptions (Details)	12 Months Ended
	Sep. 30, 2019
Share-based payments
Risk-free rate	2.10%
Dividend yield	7.50%
Volatility rate	20.30%

Superannuation commitments (Det

Superannuation commitments (Details) £ in Thousands, $ in Millions	12 Months Ended
	Sep. 30, 2019GBP (£)	Sep. 30, 2019AUD ($)	Sep. 30, 2018AUD ($)
Superannuation commitments
Funding surplus | $		$ 158	$ 324
Westpac Group Plan
Superannuation commitments
Percentage of contribution on member's salary	11.80%	11.80%
Westpac New Zealand Superannuation Scheme
Superannuation commitments
Percentage of contribution on member's salary	12.00%	12.00%
Staff Superannuation Scheme
Superannuation commitments
Contribution per year | £	£ 1,050

Superannuation commitments - Ex

Superannuation commitments - Expense recognised (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Superannuation commitments
Employer contributions		$ 28	$ 30
Member contributions		11	12
Current service cost		33	37	$ 42
Net interest cost on net benefit liability		(2)	1	8
Total defined benefit expense		31	38	$ 50
Defined benefit balances recognised
Benefit obligation at end of the year		2,799	2,314
Fair value of plan assets at end of the year		2,464	2,378
Net surplus/(deficit)		(335)	64
Defined benefit surplus		73	89
Defined benefit deficit		$ (408)	$ (25)
Average duration of the defined benefit obligation		14 years	11 years
Forecast
Superannuation commitments
Expected contribution from the employer	$ 26
Parent Entity
Superannuation commitments
Employer contributions		$ 27	$ 30
Member contributions		11	11
Current service cost		32	37
Net interest cost on net benefit liability		(2)
Total defined benefit expense		30	37
Defined benefit balances recognised
Benefit obligation at end of the year		2,710	2,239
Fair value of plan assets at end of the year		2,405	2,319
Net surplus/(deficit)		(305)	80
Defined benefit surplus		73	89
Defined benefit deficit		$ (378)	$ (9)

Superannuation commitments - Si

Superannuation commitments - Significant assumptions (Details)	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Australia
Superannuation commitments
Discount rate	2.60%	4.10%
Salary increases	2.40%	2.90%
Inflation rate (pensioners received inflationary increase)	1.40%	1.90%
Life expectancy of a 60-year-old male	31 years 1 month 6 days	31 years
Life expectancy of a 60-year-old female	34 years	33 years 10 months 24 days
Overseas | Minimum
Superannuation commitments
Discount rate	1.10%	2.60%
Salary increases	3.00%	3.00%
Inflation rate (pensioners received inflationary increase)	2.00%	2.00%
Life expectancy of a 60-year-old male	27 years 10 months 24 days	27 years 10 months 24 days
Life expectancy of a 60-year-old female	29 years 3 months 18 days	29 years 4 months 24 days
Overseas | Maximum
Superannuation commitments
Discount rate	1.80%	2.90%
Salary increases	4.90%	5.00%
Inflation rate (pensioners received inflationary increase)	3.40%	3.50%
Life expectancy of a 60-year-old male	28 years 1 month 6 days	28 years 4 months 24 days
Life expectancy of a 60-year-old female	29 years 6 months	29 years 7 months 6 days
Parent Entity | Australia
Superannuation commitments
Discount rate	2.60%	4.10%
Salary increases	2.40%	2.90%
Inflation rate (pensioners received inflationary increase)	1.40%	1.90%
Life expectancy of a 60-year-old male	31 years 1 month 6 days	31 years
Life expectancy of a 60-year-old female	34 years	33 years 10 months 24 days
Parent Entity | Overseas | Minimum
Superannuation commitments
Discount rate	1.10%	2.60%
Salary increases	3.00%	3.00%
Inflation rate (pensioners received inflationary increase)	2.00%	2.00%
Life expectancy of a 60-year-old male	27 years 10 months 24 days	27 years 10 months 24 days
Life expectancy of a 60-year-old female	29 years 3 months 18 days	29 years 4 months 24 days
Parent Entity | Overseas | Maximum
Superannuation commitments
Discount rate	1.80%	2.90%
Salary increases	4.90%	5.00%
Inflation rate (pensioners received inflationary increase)	3.40%	3.50%
Life expectancy of a 60-year-old male	28 years 1 month 6 days	28 years 4 months 24 days
Life expectancy of a 60-year-old female	29 years 6 months	29 years 7 months 6 days

Superannuation commitments - Se

Superannuation commitments - Sensitivity to changes in significant assumptions (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Discount rate
Superannuation commitments
Decrease in actuarial assumption (as a percent)	0.50%	0.50%
Increase in actuarial assumption, Increase (decrease) in the net defined benefit obligation	$ 205	$ 120
annual salary increases
Superannuation commitments
Increase in actuarial assumption (as a percent)	0.50%	0.50%
Increase in actuarial assumption, Increase (decrease) in the net defined benefit obligation	$ 14	$ 8
inflation rate
Superannuation commitments
Increase in actuarial assumption (as a percent)	0.50%	0.50%
Increase in actuarial assumption, Increase (decrease) in the net defined benefit obligation	$ 188	$ 111
Expected lifetime
Superannuation commitments
Increase in actuarial assumption, Increase (decrease) in the net defined benefit obligation	$ 45	$ 38
Increase in term of life expectancy	1 year	1 year

Superannuation commitments - As

Superannuation commitments - Asset allocation (Details)	Sep. 30, 2019	Sep. 30, 2018
Australia
Superannuation commitments
Asset allocation percentage	100.00%	100.00%
Australia | Cash
Superannuation commitments
Asset allocation percentage	3.00%	5.00%
Australia | Equity instruments
Superannuation commitments
Asset allocation percentage	45.00%	45.00%
Australia | Debt instruments
Superannuation commitments
Asset allocation percentage	28.00%	28.00%
Australia | Property
Superannuation commitments
Asset allocation percentage	10.00%	10.00%
Australia | Other
Superannuation commitments
Asset allocation percentage	14.00%	12.00%
Overseas
Superannuation commitments
Asset allocation percentage	100.00%	100.00%
Overseas | Cash
Superannuation commitments
Asset allocation percentage	3.00%	2.00%
Overseas | Equity instruments
Superannuation commitments
Asset allocation percentage	7.00%	7.00%
Overseas | Debt instruments
Superannuation commitments
Asset allocation percentage	5.00%	80.00%
Overseas | Property
Superannuation commitments
Asset allocation percentage	1.00%	1.00%
Overseas | Other
Superannuation commitments
Asset allocation percentage	84.00%	10.00%
Parent Entity | Australia
Superannuation commitments
Asset allocation percentage	100.00%	100.00%
Parent Entity | Australia | Cash
Superannuation commitments
Asset allocation percentage	3.00%	5.00%
Parent Entity | Australia | Equity instruments
Superannuation commitments
Asset allocation percentage	45.00%	45.00%
Parent Entity | Australia | Debt instruments
Superannuation commitments
Asset allocation percentage	28.00%	28.00%
Parent Entity | Australia | Property
Superannuation commitments
Asset allocation percentage	10.00%	10.00%
Parent Entity | Australia | Other
Superannuation commitments
Asset allocation percentage	14.00%	12.00%
Parent Entity | Overseas
Superannuation commitments
Asset allocation percentage	100.00%	100.00%
Parent Entity | Overseas | Cash
Superannuation commitments
Asset allocation percentage	3.00%	2.00%
Parent Entity | Overseas | Equity instruments
Superannuation commitments
Asset allocation percentage	7.00%	7.00%
Parent Entity | Overseas | Debt instruments
Superannuation commitments
Asset allocation percentage	5.00%	80.00%
Parent Entity | Overseas | Property
Superannuation commitments
Asset allocation percentage	1.00%	1.00%
Parent Entity | Overseas | Other
Superannuation commitments
Asset allocation percentage	84.00%	10.00%

Auditor's remuneration (Details

Auditor's remuneration (Details) - AUD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Auditor's remuneration
Audit fees	$ 31,369	$ 23,337
Audit-related fees	3,697	2,433
Total audit and audit-related fees	35,066	25,770
Tax fees	53	169
Other fees	572	1,581
Total audit and non-audit fees	35,691	27,520
PwC Australia
Auditor's remuneration
Audit fees	28,153	19,999
Audit-related fees	3,569	2,316
Tax fees	53	169
Other fees	70	1,581
Overseas PwC network firms
Auditor's remuneration
Audit fees	3,216	3,338
Audit-related fees	128	117
Other fees	502
Non-consolidated entities
Auditor's remuneration
Fees received by auditor from various entities related to Westpac	7,500	7,500
Parent Entity
Auditor's remuneration
Audit fees	28,346	20,035
Audit-related fees	3,420	2,224
Total audit and audit-related fees	31,766	22,259
Tax fees	53	49
Other fees	572	1,501
Total audit and non-audit fees	32,391	23,809
Parent Entity | PwC Australia
Auditor's remuneration
Audit fees	28,025	19,967
Audit-related fees	3,418	2,224
Tax fees	53	49
Other fees	70	1,501
Parent Entity | Overseas PwC network firms
Auditor's remuneration
Audit fees	321	$ 68
Audit-related fees	2
Other fees	$ 502

Related party disclosures - Sup

Related party disclosures - Superannuation plans (Details) - AUD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Related party disclosures
Group contributions to defined contribution plans	$ 347	$ 348
Group contributions to defined benefit plans	$ 28	$ 30

Related party disclosures - Rem

Related party disclosures - Remuneration of KMP (Details) - AUD ($)	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Remuneration of KMP
Short-term Benefits	$ 23,805,197	$ 23,210,820
Post Employment Benefits	712,883	618,631
Other Long-term Benefits	36,572	297,495
Termination Benefits	558,984
Share-based Payments	20,691,480	16,086,623
Total	45,805,116	40,213,569
Parent Entity
Remuneration of KMP
Short-term Benefits	22,515,477	21,807,008
Post Employment Benefits	625,173	537,187
Other Long-term Benefits	36,572	297,495
Termination Benefits	558,984
Share-based Payments	19,783,900	15,301,417
Total	$ 43,520,106	$ 37,943,107

Related party disclosures - Oth

Related party disclosures - Other transactions with KMP (Details) - Key management personnel	12 Months Ended
	Sep. 30, 2019AUD ($)item	Sep. 30, 2018AUD ($)item
Remuneration of KMP
Interest Payable for the Year	$ 672,167	$ 650,969
Closing Loan Balance	$ 31,718,007	$ 17,498,526
Number of KMP with Loans | item	14	13

Related party disclosures - Opt

Related party disclosures - Options and share rights holdings (Details)	Sep. 30, 2019AUD ($)
Brian Hartzer
Options and share rights holdings
Number of Share Rights	840,679
Craig Bright
Options and share rights holdings
Number of Share Rights	77,696
Lyn Cobley
Options and share rights holdings
Number of Share Rights	356,810
Peter King
Options and share rights holdings
Number of Share Rights	340,558
Rebecca Lim
Options and share rights holdings
Number of Share Rights	193,217
David Linberg
Options and share rights holdings
Number of Share Rights	319,482
Carolyn McCann
Options and share rights holdings
Number of Share Rights	78,548
David McLean
Options and share rights holdings
Number of Share Rights	366,163
Christine Parker
Options and share rights holdings
Number of Share Rights	260,523
David Stephen
Options and share rights holdings
Number of Share Rights	278,698
Gary Thursby
Options and share rights holdings
Number of Share Rights	213,978
Alastair Welsh
Options and share rights holdings
Number of Share Rights	14,944
Brad Cooper
Options and share rights holdings
Number of Share Rights	349,204
Dave Curran
Options and share rights holdings
Number of Share Rights	246,376
George Frazis
Options and share rights holdings
Number of Share Rights	332,577

Notes to the cash flow statem_2

Notes to the cash flow statements - Reconciliation of operating activities (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Reconciliation of net cash provided by/(used in) operating activities to net profit for the year
Net profit for the year	[1]	$ 6,790	$ 8,099	$ 7,997
Adjustments:
Depreciation, amortisation and impairment		1,079	1,144	1,269
Impairment charges		966	889	1,021
Net (decrease)/increase in current and deferred tax		(541)	(96)	(34)
(Increase)/decrease in accrued interest receivable		132	(83)	(75)
(Decrease)/increase in accrued interest payable		(341)	241	148
(Decrease)/increase in provisions		1,143	289	219
Other non-cash items		(832)	332	(419)
Cash flows from operating activities before changes in operating assets and liabilities	[1]	8,396	10,815	10,126
Net (increase)/decrease in derivative financial instruments	[1]	7,605	8,584	(5,042)
Net (increase)/decrease in life insurance assets and liabilities	[1]	(134)	(230)	219
(Increase)/decrease in other operating assets:
Collateral paid	[1]	(847)	969	2,320
Trading securities and other financial assets designated at fair value	[1]	(7,629)	3,492	(4,729)
Loans	[1]	(4,188)	(24,740)	(26,815)
Other financial assets	[1]	336	859	466
Other assets	[1]	(13)	10	67
(Decrease)/increase in other operating liabilities:
Collateral received	[1]	1,007	(295)	739
Deposits and other borrowings	[1]	1,113	23,928	23,062
Other financial liabilities	[1]	1,463	(3,632)	2,506
Other liabilities	[1]	(5)	10	(82)
Net cash provided by/(used in) operating activities	[1]	7,104	19,770	$ 2,837
Parent Entity
Reconciliation of net cash provided by/(used in) operating activities to net profit for the year
Net profit for the year	[1]	7,121	8,144
Adjustments:
Depreciation, amortisation and impairment		1,082	952
Impairment charges		893	820
Net (decrease)/increase in current and deferred tax		(804)	(598)
(Increase)/decrease in accrued interest receivable		98	(74)
(Decrease)/increase in accrued interest payable		(321)	217
(Decrease)/increase in provisions		1,214	294
Other non-cash items		(329)	420
Cash flows from operating activities before changes in operating assets and liabilities	[1]	8,954	10,175
Net (increase)/decrease in derivative financial instruments	[1]	6,581	8,263
Net (increase)/decrease in life insurance assets and liabilities	[1]
(Increase)/decrease in other operating assets:
Collateral paid	[1]	(755)	662
Trading securities and other financial assets designated at fair value	[1]	(7,358)	2,815
Loans	[1]	(3,312)	(23,661)
Other financial assets	[1]	324	502
Other assets	[1]	(41)	33
(Decrease)/increase in other operating liabilities:
Collateral received	[1]	1,004	(606)
Deposits and other borrowings	[1]	963	20,783
Other financial liabilities	[1]	1,555	(3,742)
Other liabilities	[1]	(24)	17
Net cash provided by/(used in) operating activities	[1]	$ 7,891	$ 15,241
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Notes to the cash flow statem_3

Notes to the cash flow statements - Assets and liabilities over which control ceased (Details) - AUD ($) $ in Millions		12 Months Ended
		Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2017
Assets:
Cash and balances with central banks	[1]	$ 20,059		$ 26,788
Trading securities and financial assets designated at fair value		31,781	[1]	23,132	[1]	$ 25,983
Property and equipment	[1]	1,155		1,329
Deferred tax assets		2,048	[1]	1,180	[1]	1,112
Intangible assets	[1]	11,953		11,763
Other financial assets	[1]	807		621
Total assets	[1]	906,626		879,592
Liabilities:
Provisions	[1]	3,169		1,928
Other liabilities	[1]	2,238		1,338
Total liabilities	[1]	841,119		815,019
Total equity attributable to owners of Westpac Banking Corporation	[1]	65,454		64,521
Assets and liabilities over which control ceased
Assets:
Cash and balances with central banks		3		10
Trading securities and financial assets designated at fair value		3
Property and equipment				2
Deferred tax assets				4
Intangible assets				15
Other financial assets		3		5
Total assets		9		36
Liabilities:
Provisions				2
Other liabilities				3
Total liabilities				5
Total equity attributable to owners of Westpac Banking Corporation		9		31
Cash proceeds (net of transaction costs)		2		19
Total consideration		2		19
Reserves recycled to income statement		10		3
Gain/(loss) on disposal		3		(9)
Reconciliation of cash proceeds from disposal
Cash proceeds received (net of transaction costs)		2		19
Less: Cash deconsolidated		(3)		(10)
Cash consideration (paid)/received (net of transaction costs and cash held)		(1)		9
Parent Entity
Assets:
Cash and balances with central banks	[1]	17,692		24,976
Trading securities and financial assets designated at fair value	[1]	29,565		21,415
Property and equipment	[1]	948		1,120
Deferred tax assets		1,925	[1]	1,102	[1]	$ 1,053
Intangible assets	[1]	9,687		9,494
Other financial assets	[1]	420		311
Total assets	[1]	949,739		923,230
Liabilities:
Provisions	[1]	2,980		1,766
Other liabilities	[1]	1,064		257
Total liabilities	[1]	892,901		867,874
Total equity attributable to owners of Westpac Banking Corporation	[1]	$ 56,838		$ 55,356
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Notes to the cash flow statem_4

Notes to the cash flow statements - Non-cash financing activities and restricted cash (Details) - AUD ($) $ / shares in Units, $ in Millions	Apr. 03, 2018	Mar. 13, 2018	Sep. 30, 2019		Sep. 30, 2018	Sep. 30, 2017
Non-cash financing activities
Shares issued under the dividend reinvestment plan			$ 1,489	[1]	$ 631	$ 1,452
Shares issued from the conversion of Westpac CPS					566
Minimum balances with central banks			330		357
Westpac CPS converted to Westpac Capital Notes
Non-cash financing activities
Number of Westpac CPS converted		623
Westpac CPS converted to ordinary shares
Non-cash financing activities
Value of Westpac CPS converted	$ 566
Value per share of Westpac CPS transferred to nominated party prior to conversion	$ 100	$ 100
Shares issued on conversion of Westpac CPS	19,189,765
Parent Entity
Non-cash financing activities
Shares issued under the dividend reinvestment plan			1,489		631
Shares issued from the conversion of Westpac CPS					566
Minimum balances with central banks			$ 224		$ 250
[1]	The Group has adopted AASB 9 and AASB 15 from 1 October 2018. Comparatives have not been restated. In addition, the Group has made a number of presentational changes to the Balance Sheet and Income Statement. Comparatives have been restated. Refer to Note 1 for further detail.

Subsequent events (Details)

Subsequent events (Details) - AUD ($) $ / shares in Units, $ in Millions	Nov. 18, 2019	Nov. 04, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Subsequent events
Proposed final dividend per share			$ 0.80	$ 0.94	$ 0.94
Proposed dividend			$ 2,791	$ 3,227	$ 3,186
Major ordinary share transactions
Subsequent events
Proposed final dividend per share			$ 0.80
Proposed dividend			$ 2,791
Trading period to determine number of shares for dividend reinvestment plan	10 days
Major ordinary share transactions | Underwritten placement
Subsequent events
Proceeds from issuing shares		$ 2,000
Major ordinary share transactions | Share purchase plan
Subsequent events
Proceeds from issuing shares		$ 500