Bank of Montreal (BMO) 6-K 25 Aug 20 2020 Q3 BMO Financial Group Reports Third Quarter 2020 Results Financial data

Cover Page

Cover Page	9 Months Ended
	Jul. 31, 2020
Cover [Abstract]
Document Type	6-K
Amendment Flag	false
Document Period End Date	Jul. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Registrant Name	BANK OF MONTREAL /CAN/
Entity Central Index Key	0000927971
Current Fiscal Year End Date	--10-31

Consolidated Statement of Incom

Consolidated Statement of Income - CAD ($) $ in Millions	3 Months Ended			9 Months Ended
	Jul. 31, 2020	Apr. 30, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Interest, Dividend and Fee Income
Loans	$ 4,204	$ 4,689	$ 5,120	$ 13,856	$ 14,752
Securities (Note 2)	1,249	1,363	1,407	3,971	4,126
Deposits with banks	49	101	187	343	592
Interest, Dividend and Fee Income	5,502	6,153	6,714	18,170	19,470
Interest Expense
Deposits	1,292	1,738	2,224	5,157	6,413
Subordinated debt	65	66	69	201	208
Other liabilities (Note 1)	610	831	1,204	2,371	3,325
Interest Expense	1,967	2,635	3,497	7,729	9,946
Net Interest Income	3,535	3,518	3,217	10,441	9,524
Non-Interest Revenue
Securities commissions and fees	260	277	259	789	761
Deposit and payment service charges	299	313	309	916	890
Trading revenues (losses)	68	(217)	115	(8)	319
Lending fees	309	322	314	956	879
Card fees	85	80	109	264	330
Investment management and custodial fees	455	430	444	1,341	1,298
Mutual fund revenues	348	348	357	1,062	1,060
Underwriting and advisory fees	287	239	260	811	754
Securities gains (losses), other than trading	31	(11)	90	84	181
Foreign exchange gains, other than trading	21	21	48	89	137
Insurance revenues (losses)	1,321	(166)	989	2,035	2,748
Investments in associates and joint ventures	52	34	31	112	112
Other	118	76	124	308	403
Non-Interest Revenue	3,654	1,746	3,449	8,759	9,872
Total Revenue	7,189	5,264	6,666	19,200	19,396
Provision for Credit Losses (Note 3)	1,054	1,118	306	2,521	619
Insurance Claims, Commissions and Changes in Policy Benefit Liabilities	1,189	(197)	887	1,708	2,374
Non-Interest Expense
Employee compensation	1,964	1,902	1,960	5,994	6,042
Premises and equipment (Note 1)	785	806	734	2,348	2,229
Amortization of intangible assets	154	156	135	461	406
Travel and business development	57	118	142	296	411
Communications	71	83	72	233	224
Professional fees	135	128	141	396	403
Other	278	323	307	901	928
Non-Interest Expense	3,444	3,516	3,491	10,629	10,643
Income Before Provision for Income Taxes	1,502	827	1,982	4,342	5,760
Provision for income taxes (Note 11)	270	138	425	829	1,196
Net Income attributable to Equity Holders of the Bank	$ 1,232	$ 689	$ 1,557	$ 3,513	$ 4,564
Earnings Per Share (Canadian $) (Note 10)
Basic	$ 1.81	$ 1	$ 2.34	$ 5.18	$ 6.90
Diluted	1.81	1	2.34	5.18	6.88
Common shares [member]
Earnings Per Share (Canadian $) (Note 10)
Dividends per common share	$ 1.06	$ 1.06	$ 1.03	$ 3.18	$ 3.03

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - CAD ($) $ in Millions		3 Months Ended			9 Months Ended
		Jul. 31, 2020	Apr. 30, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Statement [Line Items]
Net Income		$ 1,232	$ 689	$ 1,557	$ 3,513	$ 4,564
Other Comprehensive Income (Loss), net of taxes
Reclassification to earnings of (gains) in the period	[1]	(18)	(36)	(14)	(74)	(43)
Other comprehensive income net of tax OCI debt financial assets		123	134	98	347	302
Net change in unrealized gains on cash flow hedges
Gains on derivatives designated as cash flow hedges arising during the period	[2]	83	1,380	290	1,673	1,480
Reclassification to earnings of (gains) losses on derivatives designated as cash flow hedges in the period	[3]	(37)	21	36	8	122
Other comprehensive income net of tax cash flow hedges		46	1,401	326	1,681	1,602
Net gains (losses) on translation of net foreign operations
Unrealized gains (losses) on translation of net foreign operations		(1,180)	1,487	(577)	516	(46)
Unrealized gains (losses) on hedges of net foreign operations	[4]	206	(304)	94	(145)	4
Other comprehensive income, net of taxes, translation of net foreign operations		(974)	1,183	(483)	371	(42)
Items that will not be reclassified to net income
Gains (losses) on remeasurement of pension and other employee future benefit plans	[5]	(189)	73	(233)	(244)	(383)
Gains (losses) on remeasurement of own credit risk on financial liabilities designated at fair value	[6]	(330)	351	31	(49)	12
Items that will not be reclassified to net income		(519)	424	(202)	(293)	(371)
Other Comprehensive Income (Loss), net of taxes		(1,324)	3,142	(261)	2,106	1,491
Total Comprehensive Income (Loss) attributable to Equity Holders of the Bank		(92)	3,831	1,296	5,619	6,055
Debt securities [member]
Other Comprehensive Income (Loss), net of taxes
Unrealized gains on fair value through OCI debt securities arising during the period	[7]	$ 141	$ 170	$ 112	$ 421	$ 345
[1]	Net of income tax provision of $6 million, $10 million, $5 million for the three months ended, and $23 million, $15 million for the nine months ended, respectively.
[2]	Net of income tax (provision) of $(27) million, $(497) million, $(106) million for the three months ended, and $(600) million, $(536) million for the nine months ended, respectively.
[3]	Net of income tax provision (recovery) of $13 million, $(7) million, $(13) million for the three months ended, and $(3) million, $(44) million for the nine months ended, respectively.
[4]	Net of income tax (provision) recovery of $(74) million, $110 million, $(35) million for the three months ended, and $53 million, $(2) million for the nine months ended, respectively.
[5]	Net of income tax (provision) recovery of $65 million, $(26) million, $83 million for the three months ended, and $85 million, $138 million for the nine months ended, respectively.
[6]	Net of income tax (provision) recovery of $120 million, $(127) million, $(11) million for the three months ended, and $18 million, $(4) million for the nine months ended, respectively.
[7]	Net of income tax (provision) of $(47) million, $(62) million, $(39) million for the three months ended, and $(147) million, $(117) million for the nine months ended, respectively.

Consolidated Statement of Com_2

Consolidated Statement of Comprehensive Income (Parenthetical) - CAD ($) $ in Millions	3 Months Ended			9 Months Ended
	Jul. 31, 2020	Apr. 30, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Statement [Line Items]
Net of income tax provision, reclassification to earnings of (gains)	$ 6	$ 10	$ 5	$ 23	$ 15
Net of income tax (provision) gains on derivatives designated as cash flow hedges	(27)	(497)	(106)	(600)	(536)
Net of income tax provision (recovery), reclassification to earnings of losses on derivatives designated as cash flow hedges	13	(7)	(13)	(3)	(44)
Net of income tax (provision) recovery, unrealized gains on hedges of net foreign operations	(74)	110	(35)	53	(2)
Net of income tax (provision) recovery, gains (losses) on remeasurement of pension and other employee future benefit plans	65	(26)	83	85	138
Net of income tax (provision) recovery, gains (losses) on remeasurement of own credit risk on financial liabilities designated at fair value	120	(127)	(11)	18	(4)
Debt securities [member]
Statement [Line Items]
Net of income tax (provision), unrealized gains on fair value through OCI securities	$ (47)	$ (62)	$ (39)	$ (147)	$ (117)

Consolidated Balance Sheet

Consolidated Balance Sheet - CAD ($) $ in Millions	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019
Assets
Cash and Cash Equivalents	$ 76,590	$ 71,593	$ 48,803
Interest Bearing Deposits with Banks	8,364	7,687	7,987
Securities (Note 2)
Trading	89,207	83,362	85,903
Fair value through profit or loss	14,053	13,572	13,704
Fair value through other comprehensive income	78,493	74,476	64,515
Debt securities at amortized cost	45,229	41,592	24,472
Investments in associates and joint ventures	923	906	844
Securities, net	227,905	213,908	189,438
Securities Borrowed or Purchased Under Resale Agreements	118,713	119,058	104,004
Loans
Residential mortgages	125,481	125,534	123,740
Consumer instalment and other personal	69,168	69,818	67,736
Credit cards	7,947	7,672	8,859
Business and government	245,983	268,695	227,609
Loans gross of allowance for loan losses	448,579	471,719	427,944
Allowance for credit losses (Note 3)	(3,251)	(2,776)	(1,850)
Loans,net	445,328	468,943	426,094
Other Assets
Derivative instruments	38,796	41,150	22,144
Customers' liability under acceptances	18,032	22,473	23,593
Premises and equipment (Note 1)	3,881	3,973	2,055
Goodwill	6,566	6,785	6,340
Intangible assets	2,470	2,526	2,424
Current tax assets	1,717	1,898	1,165
Deferred tax assets	1,456	1,391	1,568
Other	23,690	25,682	16,580
Other assets	96,608	105,878	75,869
Total Assets	973,508	987,067	852,195
Liabilities and Equity
Deposits (Note 5)	660,600	653,710	568,143
Other Liabilities
Derivative instruments	39,859	45,909	23,598
Acceptances	18,032	22,473	23,593
Securities sold but not yet purchased	30,579	30,212	26,253
Securities lent or sold under repurchase agreements	99,854	105,943	86,656
Securitization and structured entities' liabilities	27,461	27,888	27,159
Current tax liabilities	56	88	55
Deferred tax liabilities	82	65	60
Other (Note 1)	33,885	38,201	38,607
Other liabilities	249,808	270,779	225,981
Subordinated Debt (Note 5)	8,513	7,344	6,995
Equity
Contributed surplus	302	301	303
Retained earnings (Note 1)	29,902	29,426	28,725
Accumulated other comprehensive income	5,835	7,159	3,729
Total equity	54,587	55,234	51,076
Total Liabilities and Equity	973,508	987,067	852,195
Preferred shares and other equity instruments [member]
Equity
Issued capital (Note 6)	5,348	5,348	5,348
Total equity	5,348	5,348	5,348
Common shares [member]
Equity
Issued capital (Note 6)	13,200	13,000	12,971
Total equity	$ 13,200	$ 13,000	$ 12,971

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - CAD ($) $ in Millions	Total		Share premium [member]	Retained earnings [member]	Accumulated other comprehensive income (loss) on Fair Value through OCI Debt Securities, net of taxes [member]	Accumulated other comprehensive Income (Loss) on derivatives designated as Cash Flow Hedges, net of taxes [member]	Accumulated other comprehensive income on translation of net foreign operations, net of taxes [member]	Accumulated Other Comprehensive (Loss) on Pension and Other Employee Future Benefit Plans, net of taxes [member]	Accumulated other comprehensive (loss) on own credit risk on financial liabilities designated at fair value, net of taxes [member]	Total accumulated other comprehensive income [member]	Preferred shares and other equity instruments [member]	Common shares [member]
Balance at beginning of period at Oct. 31, 2018			$ 300	$ 25,850	$ (315)	$ (1,074)	$ 3,727	$ 169	$ (205)		$ 4,340	$ 12,929
Statement [Line Items]
Issued under the Stock Option Plan												49
Repurchased for cancellation or for treasury shares												(20)
Net income attributable to equity holders of the bank	$ 4,564			4,564
Dividends on preferred shares and distributions payable on other equity instruments				(159)
Dividends on common shares				(1,936)
Issued during the period											1,008
Stock option expense, net of options exercised			1
Gains on derivatives designated as cash flow hedges arising during the period	1,480	[1]				1,480
Unrealized gains (losses) on translation of net foreign operations	(46)						(46)
(Losses) on remeasurement of pension and other employee future benefit plans	(383)	[2]						(383)
Gains (losses) on remeasurement of own credit risk on financial liabilities designated at fair value	12	[3]							12
Unrealized gains on fair value through OCI debt securities arising during the period					345
Reclassification to earnings of (gains) losses on derivatives designated as cash flow hedges in the period	122	[4]				122
Unrealized gains (losses) on hedges of net foreign operations	4	[5]					4
Share issue expense				(8)
Common shares repurchased for cancellation (Note 6)				(70)
Reclassification to earnings of (gains) on fair value through OCI debt securities during the period	(43)	[6]			(43)
Other			2
Balance at end of period at Jul. 31, 2019	50,643		303	28,241	(13)	528	3,685	(214)	(193)	$ 3,793	5,348	12,958
Balance at beginning of period at Apr. 30, 2019			307	27,405	(111)	202	4,168	19	(224)		4,690	12,939
Statement [Line Items]
Issued under the Stock Option Plan												19
Net income attributable to equity holders of the bank	1,557			1,557
Dividends on preferred shares and distributions payable on other equity instruments				(59)
Dividends on common shares				(658)
Issued during the period											658
Stock option expense, net of options exercised			(3)
Gains on derivatives designated as cash flow hedges arising during the period	290	[1]				290
Unrealized gains (losses) on translation of net foreign operations	(577)						(577)
(Losses) on remeasurement of pension and other employee future benefit plans	(233)	[2]						(233)
Gains (losses) on remeasurement of own credit risk on financial liabilities designated at fair value	31	[3]							31
Unrealized gains on fair value through OCI debt securities arising during the period					112
Reclassification to earnings of (gains) losses on derivatives designated as cash flow hedges in the period	36	[4]				36
Unrealized gains (losses) on hedges of net foreign operations	94	[5]					94
Share issue expense				(4)
Reclassification to earnings of (gains) on fair value through OCI debt securities during the period	(14)	[6]			(14)
Other			(1)
Balance at end of period at Jul. 31, 2019	50,643		303	28,241	(13)	528	3,685	(214)	(193)	3,793	5,348	12,958
Balance at beginning of period at Oct. 31, 2019	51,076		303	28,725	26	513	3,703	(383)	(130)		5,348	12,971
Statement [Line Items]
Issued under the Shareholder Dividend Reinvestment and Share Purchase Plan												214
Issued under the Stock Option Plan												30
Repurchased for cancellation or for treasury shares												(15)
Impact from adopting IFRS 16 (Note 1)				(59)
Net income attributable to equity holders of the bank	3,513			3,513
Dividends on preferred shares and distributions payable on other equity instruments				(195)
Dividends on common shares				(2,038)
Stock option expense, net of options exercised			(1)
Gains on derivatives designated as cash flow hedges arising during the period	1,673	[1]				1,673
Unrealized gains (losses) on translation of net foreign operations	516						516
(Losses) on remeasurement of pension and other employee future benefit plans	(244)	[2]						(244)
Gains (losses) on remeasurement of own credit risk on financial liabilities designated at fair value	(49)	[3]							(49)
Unrealized gains on fair value through OCI debt securities arising during the period					421
Reclassification to earnings of (gains) losses on derivatives designated as cash flow hedges in the period	8	[4]				8
Unrealized gains (losses) on hedges of net foreign operations	(145)	[5]					(145)
Net discount on sale of treasury shares				(44)
Reclassification to earnings of (gains) on fair value through OCI debt securities during the period	(74)	[6]			(74)
Balance at end of period at Jul. 31, 2020	54,587		302	29,902	373	2,194	4,074	(627)	(179)	5,835	5,348	13,200
Balance at beginning of period at Apr. 30, 2020	55,234		301	29,426	250	2,148	5,048	(438)	151		5,348	13,000
Statement [Line Items]
Issued under the Shareholder Dividend Reinvestment and Share Purchase Plan												214
Issued under the Stock Option Plan												1
Repurchased for cancellation or for treasury shares												(15)
Net income attributable to equity holders of the bank	1,232			1,232
Dividends on preferred shares and distributions payable on other equity instruments				(73)
Dividends on common shares				(682)
Stock option expense, net of options exercised			1
Gains on derivatives designated as cash flow hedges arising during the period	83	[1]				83
Unrealized gains (losses) on translation of net foreign operations	(1,180)						(1,180)
(Losses) on remeasurement of pension and other employee future benefit plans	(189)	[2]						(189)
Gains (losses) on remeasurement of own credit risk on financial liabilities designated at fair value	(330)	[3]							(330)
Unrealized gains on fair value through OCI debt securities arising during the period					141
Reclassification to earnings of (gains) losses on derivatives designated as cash flow hedges in the period	(37)	[4]				(37)
Unrealized gains (losses) on hedges of net foreign operations	206	[5]					206
Net discount on sale of treasury shares				(1)
Reclassification to earnings of (gains) on fair value through OCI debt securities during the period	(18)	[6]			(18)
Balance at end of period at Jul. 31, 2020	$ 54,587		$ 302	$ 29,902	$ 373	$ 2,194	$ 4,074	$ (627)	$ (179)	$ 5,835	$ 5,348	$ 13,200
[1]	Net of income tax (provision) of $(27) million, $(497) million, $(106) million for the three months ended, and $(600) million, $(536) million for the nine months ended, respectively.
[2]	Net of income tax (provision) recovery of $65 million, $(26) million, $83 million for the three months ended, and $85 million, $138 million for the nine months ended, respectively.
[3]	Net of income tax (provision) recovery of $120 million, $(127) million, $(11) million for the three months ended, and $18 million, $(4) million for the nine months ended, respectively.
[4]	Net of income tax provision (recovery) of $13 million, $(7) million, $(13) million for the three months ended, and $(3) million, $(44) million for the nine months ended, respectively.
[5]	Net of income tax (provision) recovery of $(74) million, $110 million, $(35) million for the three months ended, and $53 million, $(2) million for the nine months ended, respectively.
[6]	Net of income tax provision of $6 million, $10 million, $5 million for the three months ended, and $23 million, $15 million for the nine months ended, respectively.

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - CAD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Cash Flows from Operating Activities
Net Income		$ 1,232	$ 1,557	$ 3,513	$ 4,564
Adjustments to determine net cash flows provided by (used in) operating activities
Provision on securities, other than trading		1	1	2	2
Net (gain) on securities, other than trading		(32)	(91)	(86)	(183)
Net (increase) decrease in trading securities		(7,319)	5,290	(1,624)	4,814
Provision for credit losses (Note 3)		1,054	306	2,521	619
(increase) decrease in derivative asset		5,863	(196)	(14,158)	5,348
Increase (decrease) in derivative liability		(6,918)	350	15,342	(2,595)
Amortization of premises and equipment		198	110	598	326
Amortization of other assets		48	56	152	163
Amortization of intangible assets		154	135	461	406
Net (increase) decrease in deferred income tax asset		(90)	84	132	386
Net increase (decrease) in deferred income tax liability		16	5	(1)	2
Net (increase) decrease in current income tax asset		90	11	(492)	257
Net (decrease) in current income tax liability		(19)	(6)	(9)	(17)
(Increase) decrease in interest receivable		242	80	319	(117)
Increase (decrease) in interest payable		14	131	(198)	303
Changes in other items and accruals, net		(334)	(1,934)	(6,870)	(2,232)
Net increase in deposits		19,630	9,149	88,368	33,047
Net (increase) decrease in loans		14,938	(7,568)	(19,327)	(34,470)
Net increase (decrease) in securities sold but not yet purchased		724	(4,445)	4,081	(1,430)
Net increase (decrease) in securities lent or sold under repurchase agreements		(3,645)	3,772	11,616	23,561
Net (increase) decrease in securities borrowed or purchased under resale agreements		(1,979)	2,528	(13,514)	(22,086)
Net increase (decrease) in securitization and structured entities' liabilities		(101)	18	191	483
Net Cash Provided by Operating Activities		23,767	9,343	71,017	11,151
Cash Flows from Financing Activities
Net increase (decrease) in liabilities of subsidiaries		(5,326)	81	(8,113)	(1,267)
Proceeds from issuance of covered bonds			2,290	4,425	4,168
Redemption/buyback of covered bonds		(1,371)	(1,511)	(6,868)	(3,765)
Proceeds from issuance of subordinated debt (Note 5)		1,250		1,250
Proceeds from issuance of preferred shares and other equity instruments (Note 6)			658		1,008
Share issue expense			(4)		(8)
Net proceeds from issuance (repurchase) of common shares or treasury shares (Note 6)		(15)	17	(48)	43
Common shares repurchased for cancellation (Note 6)					(90)
Cash dividends and distributions paid		(516)	(687)	(1,974)	(2,035)
Repayment of lease liabilities	[1]	(82)		(250)
Net Cash Provided by (Used in) Financing Activities		(6,060)	844	(11,578)	(1,946)
Cash Flows from Investing Activities
Net (increase) decrease in interest bearing deposits with banks		(950)	508	(280)	1,420
Purchases of securities, other than trading		(20,449)	(16,754)	(73,897)	(43,019)
Maturities of securities, other than trading		5,050	2,749	12,539	10,538
Proceeds from sales of securities, other than trading		5,223	7,710	30,556	20,033
Premises and equipment – net (purchases)		(74)	(117)	(273)	(303)
Purchased and developed software – net (purchases)		(125)	(153)	(490)	(457)
Acquisitions				(186)
Net Cash (Used in) Investing Activities		(11,325)	(6,057)	(32,031)	(11,788)
Effect of Exchange Rate Changes on Cash and Cash Equivalents		(1,385)	(1,031)	379	(621)
Net increase (decrease) in Cash and Cash Equivalents		4,997	3,099	27,787	(3,204)
Cash and Cash Equivalents at Beginning of Period		71,593	35,839	48,803	42,142
Cash and Cash Equivalents at End of Period		76,590	38,938	76,590	38,938
Net cash provided by operating activities includes:
Interest paid in the period		1,974	3,382	7,905	9,648
Income taxes paid in the period		140	432	1,732	1,145
Interest received in the period		5,241	6,339	16,988	17,979
Dividends received in the period		$ 466	$ 431	$ 1,289	$ 1,274
[1]	Prior to adoption of IFRS 16, repayments of finance lease liabilities were included in “Net Cash Provided by Operating Activities“.

Basis of Presentation

Basis of Presentation	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Basis of Presentation	Note 1: Basis of Presentation Bank of Montreal (“the bank”) is a chartered bank under the Bank Act (Canada) These condensed interim consolidated financial statements have been prepared in accordance with International Accounting Standard 34, Interim Financial Reporting Leases Uncertainty Over Income Tax Treatments Financial Instruments: Recognition and Measurement Financial Instruments: Disclosures Changes in Accounting Policy Leases Effective November , , we adopted IFRS Leases (“IFRS ”), which provides guidance whereby lessees are required to recognize a liability for the present value of future lease payments and record a corresponding asset on the balance sheet for most leases. There are minimal changes to the accounting from the lessor’s perspective. The main impact for the bank is recording real estate leases on the balance sheet. Previously most of our real estate leases were classified as operating leases, whereby we recorded the lease expense over the lease term with no asset or liability recorded on the balance sheet other than related leasehold improvements. On adoption, we elected to exclude intangibles from the scope of lease accounting. We recalculated the right-of-use right-of-use right-of-use non-lease right-of-use On transition, we recognized the cumulative effect of adoption in opening retained earnings as at November 1, 2019 with no changes to prior periods. The impact to the Consolidated Balance Sheet as at November 1, 2019 was an increase in premises and equipment of $1,965 million, an increase in other liabilities of $2,024 million, and a decrease in retained earnings of $80 million ($59 million after tax). The following table sets out a reconciliation of our operating lease commitments, as disclosed under IAS 17 Leases (Canadian $ in millions) November 1, 2019 Operating lease commitment at October 31, 2019 as disclosed in our consolidated financial statements 3,800 Discounted using the incremental borrowing rate at November 1, 2019 (310 ) Finance lease liabilities recognized as at October 31, 2019 41 Recognition exemption for low-value (13 ) Extension and termination options reasonably certain to be exercised 37 Executory costs not included in the lease liability (166 ) Leases signed but not yet started (1,222 ) Lease liabilities recognized at November 1, 2019 2,167 When measuring lease liabilities, we discounted lease payments using our incremental borrowing rate at November 1, 2019. The weighted-average rate applied was 2.52%. When we enter into new arrangements as a lessee, a right-of-use non-cancellable The right-of-use The lease liability accretes interest which is recognized in interest expense, other liabilities, based on the effective interest method over the lease term. The lease liability is remeasured when decisions are made to exercise options under the lease arrangement or when the likelihood of exercising an option within the lease changes. Amounts relating to leases of low value are expensed when incurred in non-interest Uncertainty Over Income Tax Treatment Effective November , , we adopted IFRIC . The Interpretation clarifies the recognition and measurement requirements in IAS Income Taxes when there is uncertainty over income tax treatments. The Interpretation had no impact on our financial results on adoption. Interbank Offered Rate (“IBOR”) Reform Effective November , , we early adopted the IASB’s Phase amendments to IAS and IFRS , which provide hedge accounting relief from the uncertainty arising from IBOR reform during the period prior to replacement of IBORs. These amendments modify certain hedge accounting requirements, allowing us to assume the interest rate benchmark on which the cash flows of the hedged item and the hedging instrument are based are not altered as a result of IBOR reform, allowing hedge accounting to continue. They also provide an exception from the requirement to discontinue hedge accounting if a hedging relationship does not meet the effectiveness requirements as a result of IBOR reform. Mandatory application of the amendments ends at the earlier of when the uncertainty regarding the timing and amount of interest rate benchmark-based cash flows is no longer present and discontinuation of the hedging relationship. Under IBOR reform, certain benchmark rates may be subject to discontinuance, changes in methodology, increased volatility or decreased liquidity during the transition from IBORs to alternative rates. Banks will cease rate submissions for the calculation of the London Interbank Offered Rates after December 31, 2021. In order to manage the transition from IBORs to alternative rates, our enterprise-wide IBOR Transition Office is evaluating potential changes to market infrastructures on our risk framework, models, systems and processes, and reviewing legal documents to ensure the bank is prepared prior to the cessation of IBORs. We will apply judgment with respect to the need for new or revised hedging relationships; however, given market uncertainty, the assessment of the impact on the bank’s hedging relationships and its mitigation plans are in the early stages. The notional amount of the derivatives likely subject to IBOR reform designated as hedging instruments that mature after December 31, 2021 was $85,727 million of USD LIBOR and $1,560 million of other potentially impacted IBORs as at November 1, 2019. Future changes in IFRS Insurance Contracts In June 2020, the IASB issued amendments to IFRS 17 Insurance Contracts (“IFRS 17”), which included a deferral of the effective date, resulting in a new adoption date for the bank of November 1, 2023 instead of November 1, 2022. The amendments also simplify some requirements, such as excluding certain credit cards from the scope of IFRS 17 and providing a policy choice to exclude certain loan contracts from IFRS 17, allowing us to continue accounting for them as we do today. We continue to assess the impact of the standard on our future financial results. Use of Estimates and Judgments The preparation of the consolidated financial statements requires management to use estimates and assumptions that affect the carrying amounts of certain assets and liabilities, certain amounts reported in net income and other related disclosures. The most significant assets and liabilities for which we must make estimates and judgments include the ; The full extent of the impact that COVID-19, remains Allowance for Credit Losses As detailed further in Note of our annual consolidated financial statements for the year ended October , on page of the Annual Report, the allowance for credit losses (“ACL”) consists of allowances on impaired loans, which represent estimated losses related to impaired loans in the portfolio provided for but not yet written off, and allowances on performing loans, which is our best estimate of impairment in the existing portfolio for loans that have not yet been individually identified as impaired. The expected credit loss model requires the recognition of credit losses generally based on 12 months of expected losses for performing loans and the recognition of lifetime losses on performing loans that have experienced a significant increase in credit risk since origination. The determination of a significant increase in credit risk takes into account many different factors and varies by product and risk segment. The main factors considered in making this determination are relative changes in probability of default since origination, and certain other criteria, such as 30-day COVID-19 The judgments we apply in determining the ACL include changes in circumstances that may cause future assessments of credit risk to be materially different from current assessments, which could require an increase or decrease in the allowance for credit losses. Additional information regarding the allowance for credit losses is included in Note 3. Financial Instruments Measured at Fair Value Our fair value measurement techniques have not changed from those outlined in Note of our annual consolidated financial statements for the year ended October , on pages to of the Annual Report. Additional information on fair value of financial instruments is included in Note . Income Taxes and Deferred Tax Assets Deferred tax assets are recognized only when it is probable that sufficient taxable profit will be available in future periods against which deductible temporary differences or unused taxes losses and tax credits may be realized. On the evidence available, including management projections of income, we believe that it is probable there will be sufficient taxable income generated by our business operations to recognize these deferred tax assets. Additional information on income taxes is included in Note 11. Goodwill and Intangible Assets As a result of the current economic conditions due to the COVID-19 Provisions A provision, including for restructuring, is recognized if, as a result of a past event, the bank has a present legal or constructive obligation that can be estimated reliably, and it is probable that an outflow of economic benefits will be required to settle the obligation. Provisions are recorded at the best estimate of the amounts required to settle the obligation as at the balance sheet date, taking into account the risks and uncertainties associated with the obligation. Management and external experts are involved in estimating any provision, as necessary. The actual costs of settling some obligations may be substantially higher or lower than the amounts of the provisions. Additional information on legal proceedings is included in Note 13. Transfer of Assets and Consolidation of Structured Entities We enter into transactions in which we transfer assets to a structured entity or third party to obtain alternate sources of funding. We assess whether substantially all of the risks and rewards of or control over the loans have been transferred to determine if they qualify for derecognition. Where we continue to be exposed to substantially all of the repayment, interest rate and/or credit risk associated with the securitized loans, they do not qualify for derecognition. We continue to recognize the loans and the related cash proceeds as secured financing in our Consolidated Balance Sheet. Further details of our assessment of certain government offered programs launched in response to the impact of COVID-19

Securities

Securities	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Securities	Note 2: Securities Classification of Securities The bank’s fair value through profit or loss (“FVTPL”) securities of $14,053 million ($13,704 million as at October 31, 2019) are comprised of $2,361 million mandatorily measured at fair value and $11,692 million investment securities held by insurance subsidiaries designated at fair value ($2,899 million and $10,805 million, respectively, as at October 31, 2019). Our fair value through other comprehensive income (“FVOCI”) securities totalling $78,493 million ($64,515 million as at October 31, 2019), are net of an Amortized cost securities totalling $45,229 million ($24,472 million as at October 31, 2019), are net of an Unrealized Gains and Losses on FVOCI Securities The following table summarizes the unrealized gains and losses: (Canadian $ in millions) July 31, 2020 October 31, 2019 Cost/ Gross Gross Cost/ Gross Gross Amortized cost unrealized gains unrealized losses Fair value Amortized cost unrealized gains unrealized losses Fair value Issued or guaranteed by: Canadian federal government 27,329 253 – 27,582 11,876 72 4 11,944 Canadian provincial and municipal governments 4,585 140 – 4,725 5,907 106 1 6,012 U.S. federal government 17,646 1,039 6 18,679 15,363 617 5 15,975 U.S. states, municipalities and agencies 5,196 169 2 5,363 4,091 74 4 4,161 Other governments 6,949 205 4 7,150 7,179 158 2 7,335 National Housing Act (“NHA”) mortgage-backed securities (“MBS”) 1,614 51 2 1,663 1,953 18 1 1,970 U.S. agency MBS and collateralized mortgage obligations (“CMO”) 9,543 336 4 9,875 11,966 106 42 12,030 Corporate debt 3,241 129 1 3,369 4,899 110 2 5,007 Corporate equity 85 2 – 87 79 2 - 81 Total 76,188 2,324 19 78,493 63,313 1,263 61 64,515 Unrealized gains (losses) may be offset by related (losses) gains on hedge contracts. Interest Income on Debt Securities The following table presents interest income calculated using the effective interest method: (Canadian $ in millions) For the three months ended For the nine months ended July 31, 2020 July 31, 2019 July 31, 2020 July 31, 2019 FVOCI - Debt 185 403 823 1,202 Amortized cost 144 75 455 163 Total 329 478 1,278 1,365

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Loans and Allowance for Credit Losses	Note 3: Loans and Allowance for Credit Losses Credit Risk Exposure The following table sets out our credit risk exposure for all loans carried at amortized cost, FVOCI or FVTPL as at July 31, 2020 and October 31, 2019. Stage 1 represents those performing loans carried with up to a 12 month expected credit loss, Stage 2 represents those performing loans carried with a lifetime expected credit loss, and Stage 3 represents those loans with a lifetime credit loss that are credit impaired. (Canadian $ in millions) July 31, 2020 October 31, 2019 Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total Loans: Residential mortgages Exceptionally low 1 - - 1 - - - - Very low 79,472 278 - 79,750 79,011 242 - 79,253 Low 22,654 2,765 - 25,419 20,853 2,821 - 23,674 Medium 11,594 6,560 - 18,154 13,651 4,578 - 18,229 High 91 362 - 453 124 397 - 521 Not rated 1,082 192 - 1,274 1,531 118 - 1,649 Impaired - - 430 430 - - 414 414 Allowance for credit losses 65 58 17 140 15 32 17 64 Carrying amount 114,829 10,099 413 125,341 115,155 8,124 397 123,676 Loans: Consumer instalment and other personal Exceptionally low 1,584 33 - 1,617 21,023 25 - 21,048 Very low 25,827 43 - 25,870 16,491 194 - 16,685 Low 20,281 873 - 21,154 9,894 346 - 10,240 Medium 9,921 4,856 - 14,777 10,510 4,264 - 14,774 High 367 1,493 - 1,860 397 1,423 - 1,820 Not rated 3,349 108 - 3,457 2,594 107 - 2,701 Impaired - - 433 433 - - 468 468 Allowance for credit losses 115 420 127 662 82 318 136 536 Carrying amount 61,214 6,986 306 68,506 60,827 6,041 332 67,200 Loans: Credit cards Exceptionally low 2,155 - - 2,155 2,418 - - 2,418 Very low 1,076 16 - 1,092 1,214 16 - 1,230 Low 904 164 - 1,068 970 158 - 1,128 Medium 1,700 965 - 2,665 2,020 876 - 2,896 High 49 388 - 437 140 440 - 580 Not rated 530 - - 530 606 1 - 607 Impaired - - - - - - - - Allowance for credit losses 60 270 - 330 43 193 - 236 Carrying amount 6,354 1,263 - 7,617 7,325 1,298 - 8,623 Loans: Business and government (1) Acceptable Investment grade 124,728 6,757 - 131,485 134,587 1,028 - 135,615 Sub-investment 93,201 27,697 - 120,898 96,731 11,553 - 108,284 Watchlist - 8,082 - 8,082 - 5,556 - 5,556 Impaired - - 3,550 3,550 - - 1,747 1,747 Allowance for credit losses 573 971 575 2,119 263 441 310 1,014 Carrying amount 217,356 41,565 2,975 261,896 231,055 17,696 1,437 250,188 Commitments and financial guarantee contracts Acceptable Investment grade 132,838 1,491 - 134,329 134,920 884 - 135,804 Sub-investment 42,765 17,614 - 60,379 45,178 6,435 - 51,613 Watchlist - 3,419 - 3,419 - 2,133 - 2,133 Impaired - - 1,164 1,164 - - 324 324 Allowance for credit losses 212 232 12 456 119 103 22 244 Carrying amount (2) 175,391 22,292 1,152 198,835 179,979 9,349 302 189,630 (1) Includes customers’ liability under acceptances. (2) Represents the total contractual amounts of undrawn credit facilities and other off-balance Allowance for Credit Losses (“ACL”) The allowance for credit losses recorded in our Consolidated Balance Sheet is maintained at a level we consider adequate to absorb credit-related losses on our loans and other credit instruments. The allowance for credit losses amounted to $3,707 million at July 31, 2020 ($2,094 million at October 31, 2019) of which $3,251 million ($1,850 million at October 31, 2019) was recorded in loans and $456 million ($244 million at October 31, 2019) was recorded in other liabilities in our Consolidated Balance Sheet. Significant changes in the gross balances, including originations, maturities and repayments in the normal course of operations, impact the allowance for credit losses. The following table shows the continuity in the loss allowance by product type. Transfers represent the amount of expected credit loss (“ECL”) that moved between stages during the period, for example, moving from a 12-month (Canadian $ in millions) For the three months ended July 31, 2020 July 31, 2019 Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total Loans: Residential mortgages Balance as at beginning of period 29 37 27 93 16 37 44 97 Transfer to Stage 1 8 (7 ) (1 ) - 7 (6 ) (1 ) - Transfer to Stage 2 (1 ) 4 (3 ) - (1 ) 2 (1 ) - Transfer to Stage 3 - (1 ) 1 - - (3 ) 3 - Net remeasurement of loss allowance 27 30 10 67 (9 ) 6 - (3 ) Loan originations 4 - - 4 2 - - 2 Derecognitions and maturities - (2 ) - (2 ) (1 ) (1 ) - (2 ) Model changes (1 ) (3 ) - (4 ) - - - - Total Provision for Credit Losses (“PCL”) (1) 37 21 7 65 (2 ) (2 ) 1 (3 ) Write-offs (2) - - (3 ) (3 ) - - (6 ) (6 ) Recoveries of previous write-offs - - 2 2 - - 7 7 Foreign exchange and other (1 ) - (6 ) (7 ) - - (8 ) (8 ) Balance as at end of period 65 58 27 150 14 35 38 87 Loans: Consumer instalment and other personal Balance as at beginning of period 116 407 125 648 86 324 128 538 Transfer to Stage 1 59 (57 ) (2 ) - 44 (42 ) (2 ) - Transfer to Stage 2 (10 ) 21 (11 ) - (4 ) 18 (14 ) - Transfer to Stage 3 (1 ) (27 ) 28 - (1 ) (32 ) 33 - Net remeasurement of loss allowance (50 ) 103 56 109 (40 ) 66 52 78 Loan originations 9 - - 9 12 - - 12 Derecognitions and maturities (4 ) (9 ) - (13 ) (4 ) (13 ) - (17 ) Model changes 11 8 - 19 - - - - Total PCL (1) 14 39 71 124 7 (3 ) 69 73 Write-offs (2) - - (81 ) (81 ) - - (80 ) (80 ) Recoveries of previous write-offs - - 22 22 - - 25 25 Foreign exchange and other (3 ) (3 ) (10 ) (16 ) (1 ) (1 ) (7 ) (9 ) Balance as at end of period 127 443 127 697 92 320 135 547 Loans: Credit cards Balance as at beginning of period 115 319 - 434 77 231 - 308 Transfer to Stage 1 50 (50 ) - - 28 (28 ) - - Transfer to Stage 2 (9 ) 9 - - (5 ) 5 - - Transfer to Stage 3 - (48 ) 48 - (1 ) (46 ) 47 - Net remeasurement of loss allowance (44 ) 105 20 81 (24 ) 79 24 79 Loan originations 5 - - 5 5 - - 5 Derecognitions and maturities (1 ) (7 ) - (8 ) (1 ) (6 ) - (7 ) Model changes (1 ) (10 ) - (11 ) - - - - Total PCL (1) - (1 ) 68 67 2 4 71 77 Write-offs (2) - - (80 ) (80 ) - - (91 ) (91 ) Recoveries of previous write-offs - - 19 19 - - 20 20 Foreign exchange and other (3 ) (1 ) (7 ) (11 ) - 1 - 1 Balance as at end of period 112 317 - 429 79 236 - 315 Loans: Business and government Balance as at beginning of period 580 795 586 1,961 336 423 260 1,019 Transfer to Stage 1 45 (45 ) - - 31 (30 ) (1 ) - Transfer to Stage 2 (65 ) 66 (1 ) - (16 ) 17 (1 ) - Transfer to Stage 3 (4 ) (163 ) 167 - (1 ) (14 ) 15 - Net remeasurement of loss allowance 145 510 134 789 (23 ) 91 89 157 Loan originations 53 - - 53 53 - - 53 Derecognitions and maturities (21 ) (36 ) - (57 ) (28 ) (22 ) - (50 ) Model changes (7 ) (4 ) - (11 ) - - - - Total PCL (1) 146 328 300 774 16 42 102 160 Write-offs (2) - - (300 ) (300 ) - - (52 ) (52 ) Recoveries of previous write-offs - - 37 37 - - 2 2 Foreign exchange and other (5 ) 10 (46 ) (41 ) (1 ) (4 ) (15 ) (20 ) Balance as at end of period 721 1,133 577 2,431 351 461 297 1,109 Total as at end of period 1,025 1,951 731 3,707 536 1,052 470 2,058 Comprised of: Loans 813 1,719 719 3,251 409 946 447 1,802 Other credit instruments (3) 212 232 12 456 127 106 23 256 (1) Excludes PCL on other assets of $24 million for the three months ended July 31, 2020 ($(1) million for the three months ended July 31, 2019). (2) Generally, we continue to seek recovery on amounts that were written off during the year, unless the loan is sold, we no longer have the right to collect or we have exhausted all reasonable efforts to collect. (3) Recorded in other liabilities on the Consolidated Balance Sheet. The following table shows the continuity in the loss allowance by each product type: (Canadian $ in millions) For the nine months ended July 31, 2020 July 31, 2019 Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total Loans: Residential mortgages Balance as at beginning of period 15 33 38 86 20 38 44 102 Transfer to Stage 1 19 (17 ) (2 ) - 21 (19 ) (2 ) - Transfer to Stage 2 (2 ) 7 (5 ) - (2 ) 5 (3 ) - Transfer to Stage 3 - (4 ) 4 - - (7 ) 7 - Net remeasurement of loss allowance 29 47 17 93 (29 ) 21 7 (1 ) Loan originations 8 - - 8 5 - - 5 Derecognitions and maturities (1 ) (4 ) - (5 ) (1 ) (3 ) - (4 ) Model changes (3 ) (5 ) - (8 ) - - - - Total PCL (1) 50 24 14 88 (6 ) (3 ) 9 - Write-offs (2) - - (9 ) (9 ) - - (13 ) (13 ) Recoveries of previous write-offs - - 6 6 - - 12 12 Foreign exchange and other - 1 (22 ) (21 ) - - (14 ) (14 ) Balance as at end of period 65 58 27 150 14 35 38 87 Loans: Consumer instalment and other personal Balance as at beginning of period 89 333 136 558 90 326 144 560 Transfer to Stage 1 138 (131 ) (7 ) - 131 (122 ) (9 ) - Transfer to Stage 2 (20 ) 66 (46 ) - (13 ) 62 (49 ) - Transfer to Stage 3 (3 ) (79 ) 82 - (4 ) (84 ) 88 - Net remeasurement of loss allowance (112 ) 247 162 297 (134 ) 168 112 146 Loan originations 32 - - 32 35 - - 35 Derecognitions and maturities (12 ) (27 ) - (39 ) (12 ) (30 ) - (42 ) Model changes 16 33 - 49 - - - - Total PCL (1) 39 109 191 339 3 (6 ) 142 139 Write-offs (2) - - (248 ) (248 ) - - (233 ) (233 ) Recoveries of previous write-offs - - 64 64 - - 97 97 Foreign exchange and other (1 ) 1 (16 ) (16 ) (1 ) - (15 ) (16 ) Balance as at end of period 127 443 127 697 92 320 135 547 Loans: Credit cards Balance as at beginning of period 80 225 - 305 74 219 - 293 Transfer to Stage 1 107 (107 ) - - 78 (78 ) - - Transfer to Stage 2 (25 ) 25 - - (16 ) 16 - - Transfer to Stage 3 (1 ) (129 ) 130 - (1 ) (125 ) 126 - Net remeasurement of loss allowance (57 ) 332 68 343 (68 ) 221 58 211 Loan originations 13 - - 13 15 - - 15 Derecognitions and maturities (3 ) (19 ) - (22 ) (3 ) (18 ) - (21 ) Model changes (1 ) (10 ) - (11 ) - - - - Total PCL (1) 33 92 198 323 5 16 184 205 Write-offs (2) - - (257 ) (257 ) - - (250 ) (250 ) Recoveries of previous write-offs - - 66 66 - - 66 66 Foreign exchange and other (1 ) - (7 ) (8 ) - 1 - 1 Balance as at end of period 112 317 - 429 79 236 - 315 Loans: Business and government Balance as at beginning of period 338 496 311 1,145 298 408 209 915 Transfer to Stage 1 109 (102 ) (7 ) - 139 (135 ) (4 ) - Transfer to Stage 2 (118 ) 121 (3 ) - (41 ) 53 (12 ) - Transfer to Stage 3 (6 ) (226 ) 232 - (1 ) (41 ) 42 - Net remeasurement of loss allowance 321 883 558 1,762 (141 ) 230 159 248 Loan originations 153 - - 153 163 - - 163 Derecognitions and maturities (63 ) (86 ) - (149 ) (75 ) (57 ) - (132 ) Model changes (30 ) 8 - (22 ) - - - - Total PCL (1) 366 598 780 1,744 44 50 185 279 Write-offs (2) - - (516 ) (516 ) - - (123 ) (123 ) Recoveries of previous write-offs - - 60 60 - - 61 61 Foreign exchange and other 17 39 (58 ) (2 ) 9 3 (35 ) (23 ) Balance as at end of period 721 1,133 577 2,431 351 461 297 1,109 Total as at end of period 1,025 1,951 731 3,707 536 1,052 470 2,058 Comprised of: Loans 813 1,719 719 3,251 409 946 447 1,802 Other credit instruments (3) 212 232 12 456 127 106 23 256 (1) Excludes PCL on other assets of $27 million for the nine months ended July 31, 2020 ($(4) million for the nine months ended July 31, 2019). (2) Generally, we continue to seek recovery on amounts that were written off during the year, unless the loan is sold, we no longer have the right to collect or we have exhausted all reasonable efforts to collect. (3) Recorded in other liabilities on the Consolidated Balance Sheet. Loans and allowance for credit losses by geographic region as at July 31, 2020 and October 31, 2019 are as follows: (Canadian $ in millions) July 31, 2020 October 31, 2019 Gross Allowance for credit losses on impaired loans (2) Allowance for credit losses on performing loans (3) Net Amount Gross amount Allowance for credit losses on impaired loans (2) Allowance for credit losses on performing loans (3) Net Amount By geographic region (1): Canada 270,348 345 1,335 268,668 258,842 207 740 257,895 United States 166,278 374 1,164 164,740 158,454 256 630 157,568 Other countries 11,953 - 33 11,920 10,648 - 17 10,631 Total 448,579 719 2,532 445,328 427,944 463 1,387 426,094 (1) Geographic region is based upon country of ultimate risk. (2) Excludes allowance for credit losses on impaired loans of $12 million for other credit instruments, which is included in other liabilities ($22 million as at October 31, 2019). (3) Excludes allowance for credit losses on performing loans of $444 million for other credit instruments, which is included in other liabilities ($222 million as at October 31, 2019). Impaired (Stage 3) loans, including the related allowances, as at July 31, 2020 and October 31, 2019 are as follows: (Canadian $ in millions) July 31, 2020 October 31, 2019 Gross impaired Allowance for credit losses Net impaired Gross impaired Allowance for credit losses on impaired loans (4) Net impaired amount (3) Residential mortgages 430 17 413 414 17 397 Consumer instalment and other personal 433 127 306 468 136 332 Business and government (1) 3,550 575 2,975 1,747 310 1,437 Total 4,413 719 3,694 2,629 463 2,166 By geographic region (2): Canada 1,469 345 1,124 914 207 707 United States 2,885 374 2,511 1,715 256 1,459 Other countries 59 - 59 - - - Total 4,413 719 3,694 2,629 463 2,166 (1) Includes customers’ liability under acceptances. (2) Geographic region is based upon the country of ultimate risk. (3) Gross impaired loans and net impaired loans exclude purchased credit impaired loans. (4) Excludes allowance for credit losses on impaired loans of $12 million for other credit instruments, which is included in other liabilities ($22 million as at October 31, 2019). Loans Past Due Not Impaired Loans that are past due but not classified as impaired are loans where our customers have failed to make payments when contractually due but for which we expect the full amount of principal and interest payments to be collected, or loans which are held at fair value. The following table presents loans that are past due but not classified as impaired as at July 31, 2020 and October 31, 2019. In cases where borrowers have opted to participate in payment deferral programs we offered as a result of the COVID-19 (Canadian $ in millions) July 31, 2020 October 31, 2019 1 to 29 days 30 to 89 days 90 days or more Total 1 to 29 days 30 to 89 days 90 days or more Total Residential mortgages 598 335 28 961 806 465 16 1,287 Credit card, consumer instalment and other personal 1,261 328 81 1,670 1,590 426 87 2,103 Business and government 387 293 32 712 351 207 59 617 Total 2,246 956 141 3,343 2,747 1,098 162 4,007 Fully secured loans with amounts past due between 90 and 180 days that we have not classified as impaired totalled $43 million and $54 million as at July 31, 2020 and October 31, 2019, respectively. ECL Sensitivity and Key Economic Variables The expected credit loss model requires the recognition of credit losses generally based on 12 months of expected losses for performing loans and the recognition of lifetime losses on performing loans that have experienced a significant increase in credit risk since origination. The allowance for performing loans is sensitive to changes in both economic forecasts and the probability-weight assigned to each forecast scenario. We incorporate multiple economic forecasts and those used are representative of our view of future economic conditions and considering external data, developed internally by our Economics group. Many of the variables used in our forecasts have a high degree of interdependency, and as such there is no single factor to which loan impairment allowances as a whole are sensitive. We apply experienced credit judgment to reflect factors not captured in the ECL models as we deem necessary. In Q3 2020, we have applied experienced credit judgment to reflect the impact of the extraordinary and highly uncertain environment on credit conditions and the economy. As at July 31, 2020, our base case economic forecast depicts a contracting Canadian economy, with real GDP falling in 2020 as a result of a sharp decline in the first half of the year, as a result of the COVID-19 As at July 31, 2020, our adverse case economic forecast also depicts a contracting Canadian economy, with real GDP declining in 2020, with an increase in 2021. In our adverse case scenario, the dislocations caused by the pandemic are more significant and persist for a longer period of time compared with our base case scenario. This is in contrast to the adverse scenario forecast as at October 31, 2019 which depicted a typical recession, with the economy contracting in the first year followed by a steady recovery through the end of the projection period. If we assume a 100% adverse economic forecast and include the impact of loan migration by restaging, with other assumptions held constant, including the application of experienced credit judgment, the allowance on performing loans would be approximately $3,550 million as at July 31, 2020 ($2,800 million as at October 31, 2019), compared to the reported allowance for performing loans of $2,976 million ($1,609 million as at October 31, 2019). The following table shows the key economic variables we use to estimate our allowance on performing loans during the forecast period. This table is typically provided on an annual basis. However, given the significant level of change in the forward-looking information since the end of 2019, the disclosures have been provided as an update to the bank’s Annual Report for the year ended October 31, 2019. The values shown represent the national average values for calendar 2020 and calendar 2021. The base case scenario reflects our view of the most probable outcome. While the values disclosed below are national variables, we use regional variables in our underlying models where considered appropriate and consider factors impacting particular industries. Benign scenario Base scenario Adverse scenario (1) 2020 2021 2020 2021 2020 2021 All figures are average annual values July 31, October 31, July 31, October 31, July 31, October 31, July 31, October 31, July 31, October 31, July 31, October 31, Real gross domestic product (2) Canada (4.6) % 2.9% 8.9 % 2.5% (6.0) % 1.7% 6.0 % 1.6% (7.6 ) % (2.3)% 3.7 % 0.5% United States (4.1) % 2.4% 7.8 % 2.4% (5.5) % 1.8% 5.0 % 1.9% (7.1 ) % (2.0)% 2.5 % 0.6% Corporate BBB 10-year Canada 2.1 % 2.0% 1.9 % 2.1% 2.4 % 2.3% 2.3 % 2.3% 2.8 % 4.5% 3.1 % 4.1% United States 2.2 % 1.8% 1.9 % 2.0% 2.5 % 2.3% 2.4 % 2.4% 3.0 % 4.1% 3.2 % 3.6% Unemployment rates Canada 8.5 % 5.1% 6.5 % 5.0% 9.5 % 5.7% 8.0 % 5.9% 10.9 % 8.5% 10.0 % 9.0% United States 7.5 % 3.3% 5.4 % 3.2% 8.9 % 3.7% 7.0 % 3.8% 10.3 % 6.1% 8.9 % 6.8% Housing Price Index (“HPI”) (2) Canada (3) 5.3 % 3.7% 5.4 % 3.7% 3.5 % 2.0% 0.0 % 2.5% 0.8 % (12.3)% (7.5) % (4.7)% United States (4) 2.4 % 4.4% 4.6 % 4.2% 1.0 % 3.0% 1.6 % 2.7% (0.4) % (5.7)% (1.9) % (2.2)% (1) In Q4 2019, the adverse scenario was reflective of a typical recession that extends for four quarters. However, beginning Q2 2020, the adverse scenario used is reflective of a more adverse outcome compared with our base case forecast. (2) Real gross domestic product and housing price index are year-over-year growth rates. (3) In Canada, we use the HPI Benchmark Composite. (4) In the United States, we use the National Case-Shiller House Price Index. The ECL approach requires the recognition of credit losses generally based on 12 months of expected losses for performing loans (Stage 1) and the recognition of lifetime expected losses for performing loans that have experienced a significant increase in credit risk since origination (Stage 2). Under our current probability-weighted scenarios and based on the current risk profile of our loan exposures, if all our performing loans were in Stage 1, our allowance for performing loans would be approximately $2,300 million ($1,050 million as at October 31, 2019), compared with the reported allowance for performing loans of $2,976 million ($1,609 million as at October 31, 2019). Transfer of Assets In the normal course, we sell Canadian mortgage loans to third-party Canadian securitization programs. Beginning in the second quarter , COVID-19. Under the IMPP, we assessed whether substantially all of the risks and rewards of the loans have been transferred, in order to determine if the mortgages qualify for derecognition. Since we continue to be exposed to substantially all of the risks and rewards of ownership associated with these securitized mortgages, they do not qualify for derecognition. We continue to recognize the loans and recognize the related cash proceeds as secured financing in our Consolidated Balance Sheet. The government also launched the Canada Emergency Business Account (“CEBA”) Program in the second quarter, where we issue loans that are funded by the government. We determined these loans qualify for derecognition as the risks and rewards were transferred to the government, therefore we do not recognize these loans on our Consolidated Balance Sheet.

Risk Management

Risk Management	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Risk Management	Note 4: Risk Management We have an enterprise-wide approach to the identification, measurement, monitoring and control of risks faced across our organization. The key risks related to our financial instruments are classified as credit and counterparty, market, and liquidity and funding risk. Our risk management policies and processes have not changed significantly from those outlined in the Enterprise-Wide Risk Management sections on pages 68 to 106 of the bank’s Annual Report for the year ended October 31, 2019. However, the COVID-19 Credit and Counterparty Risk Credit and counterparty risk is the potential for loss due to the failure of a borrower, endorser, guarantor or counterparty to repay a loan or honour another predetermined financial obligation. Credit risk arises predominantly with respect to loans, over-the-counter Market Risk Market risk is the potential for adverse changes in the value of our assets and liabilities resulting from changes in market variables such as interest rates, foreign exchange rates, equity prices, dividend policies and commodity prices and their implied volatilities, and credit spreads, and includes the risk of credit migration and default in our trading book. We incur market risk in our trading and underwriting activities and in the management of structural market risk in our banking and insurance activities. Updated market risk measures are included on page 36 of our interim Management’s Discussion and Analysis. Liquidity and Funding Risk Liquidity and funding risk is the potential for loss if we are unable to meet our financial commitments in a timely manner at reasonable prices as they become due. It is our policy to ensure that sufficient liquid assets and funding capacity are available to meet financial commitments, including liabilities to depositors and suppliers, and lending, investment and pledging commitments, even in times of stress. Managing liquidity and funding risk is essential to maintaining a safe and sound enterprise, depositor confidence and earnings stability. Updated contractual maturities of assets, liabilities and off-balance

Deposits and Subordinated Debt

Deposits and Subordinated Debt	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Deposits and Subordinated Debt	Note 5: Deposits and Subordinated Debt Deposits Payable on demand Payable Payable on (Canadian $ in millions) Interest bearing Non-interest after notice a fixed date (4)(5) Total July 31, October 31, July 31, October 31, July 31, October 31, July 31, October 31, July 31, October 31, Deposits by: Banks (1) (6) 3,245 1,996 1,773 1,530 1,240 1,017 35,641 19,273 41,899 23,816 Business and government 45,320 29,083 41,901 33,853 115,048 85,022 195,436 195,199 397,705 343,157 Individuals 4,213 3,361 28,729 23,084 107,521 94,304 80,533 80,421 220,996 201,170 Total (2) (3) 52,778 34,440 72,403 58,467 223,809 180,343 311,610 294,893 660,600 568,143 Booked in: Canada 39,943 27,338 62,427 49,911 107,555 90,630 201,878 181,835 411,803 349,714 United States 11,254 6,043 9,935 8,531 114,926 88,604 77,713 86,368 213,828 189,546 Other countries 1,581 1,059 41 25 1,328 1,109 32,019 26,690 34,969 28,883 Total 52,778 34,440 72,403 58,467 223,809 180,343 311,610 294,893 660,600 568,143 (1) Includes regulated and central banks. (2) Includes structured notes designated at fair value through profit or loss (Note 7). (3) As at July 31, 2020 and October 31, 2019, total deposits payable on a fixed date included $40,757 million and $25,438 million, respectively, of federal funds purchased and commercial paper issued and other deposit liabilities. Included in deposits as at July 31, 2020 and October 31, 2019 are $318,088 million and $279,860 million, respectively, of deposits denominated in U.S. dollars, and $38,861 million and $36,680 million, respectively, of deposits denominated in other foreign currencies. (4) Includes $276,218 million of deposits, each greater than one hundred thousand dollars, of which $173,167 million were booked in Canada, $71,037 million were booked in the United States and $32,014 million were booked in other countries ($258,862 million, $152,499 million, $79,682 million and $26,681 million, respectively, as at October 31, 2019). Of the $173,167 million of deposits booked in Canada, $27,729 million mature in less than three months, $11,351 million mature in three to six months, $41,220 million mature in six to twelve months and $92,867 million mature after twelve months ($152,499 million, $26,234 million, $8,400 million, $31,155 million and $86,710 million, respectively, as at October 31, 2019). Certain comparative figures have been reclassified to conform with the current period’s presentation. (5) Includes $24,990 million of senior unsecured debt as at July 31, 2020 subject to the Bank Recapitalization (Bail-In) Bail-In non-viable. (6) Includes $12,741 million of deposits with the Bank of Canada, where we have used our own bearer deposit notes as collateral under its term repo facility ($nil as at October 31, 2019). Subordinated Debt On June 17, 2020, we issued $1,250 million of 2.077% unsecured subordinated notes under our Canadian Medium-Term Note Program. The issue, Series J Medium-Term Notes Second Tranche, is due June 17, 2030. The notes reset to a floating rate on June 17, 2025. During the three and nine months ended July 31, 2020, we did not redeem any subordinated debt.

Equity

Equity	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Equity	Note 6: Equity Preferred and Common Shares Outstanding and Other Equity Instruments (1) (Canadian $ in millions, except as noted) July 31, 2020 October 31, 2019 Number of shares Amount Number of shares Amount Convertible into... Preferred Shares - Classified as Equity Class B – Series 25 9,425,607 236 9,425,607 236 Class B -Series 26 (2) Class B – Series 26 2,174,393 54 2,174,393 54 Class B -Series 25 (2) Class B – Series 27 20,000,000 500 20,000,000 500 Class B -Series 28 (2)(3) Class B – Series 29 16,000,000 400 16,000,000 400 Class B -Series 30 (2)(3) Class B – Series 31 12,000,000 300 12,000,000 300 Class B -Series 32 (2)(3) Class B – Series 33 8,000,000 200 8,000,000 200 Class B -Series 34 (2)(3) Class B – Series 35 6,000,000 150 6,000,000 150 Not convertible (3) Class B – Series 36 600,000 600 600,000 600 Class B -Series 37 (2)(3) Class B – Series 38 24,000,000 600 24,000,000 600 Class B -Series 39 (2)(3) Class B – Series 40 20,000,000 500 20,000,000 500 Class B - Series 41 (2)(3) Class B – Series 42 16,000,000 400 16,000,000 400 Class B -Series 43 (2)(3) Class B – Series 44 16,000,000 400 16,000,000 400 Class B -Series 45 (2)(3) Class B – Series 46 14,000,000 350 14,000,000 350 Class B -Series 47 (2)(3) Preferred Shares - Classified as Equity 4,690 4,690 Other Equity Instruments (4) 658 658 Common Shares (5) (6) (7) 642,804,880 13,200 639,232,276 12,971 Share Capital and Other Equity Instruments 18,548 18,319 (1) For additional information refer to Notes 16 and 20 of our annual consolidated financial statements for the year ended October 31, 2019 on pages 177 and 188 of our 2019 Annual Report. (2) If converted, the holders have the option to convert back to the original preferred shares on subsequent redemption dates. (3) The shares issued include a non-viability non-viable non-viability. (4) The other equity instruments non-viability non-viable non-viability. (5) The stock options issued under the Stock Option Plan are convertible into 6,635,228 common shares as at July 31, 2020 (6,108,307 common shares as at October 31, 2019). (6) During the three and nine months ended July 31, 2020, we issued 3,355,394 common shares under the Shareholder Dividend Reinvestment and Share Purchase Plan and 8,614 and 423,737 common shares under the Stock Option Plan. (7) Common shares are net of 206,527 treasury shares as at July 31, 2020. Other Equity Instruments The bank’s US$500 million ( CAD non-viability Preferred Shares On June 29, 2020, we announced that we did not intend to exercise our right to redeem the current outstanding Non-Cumulative 5-Year ("Preferred Shares Series 33") one-for-one Non-Cumulative ("Preferred Shares Series 34") During the three and nine months ended July 31, 2020, we did not issue or redeem any preferred shares. Common Shares On February 25, 2020, we announced our intention million common shares over a 12-month Shareholder Dividend Reinvestment and Share Purchase Plan On August 25, 2020, we announced that commencing with common share dividend declared for the fourth quarter of fiscal 2020, and subsequently until further notice, common shares under the Shareholder Dividend Reinvestment and Share Purchase Plan (the “Plan”) will be purchased on the open market without a discount. During the three and nine months ended July 31, 2020, we issued 3,355,394 common shares under the Plan.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Fair Value of Financial Instruments	Note 7: Fair Value of Financial Instruments Fair Value of Financial Instruments Not Carried at Fair Value on the Balance Sheet Set out in the following table are the amounts that would be reported if all financial assets and liabilities not currently carried at fair value were reported at their fair values. Refer to Note 17 to our annual consolidated financial statements for the year ended October 31, 2019 on pages 179 to 186 for further discussion on the determination of fair value. (Canadian $ in millions) July 31, 2020 October 31, 2019 Carrying value Fair value Carrying value Fair value Securities Amortized cost 45,229 45,875 24,472 24,622 Loans (1) Residential mortgages 125,341 127,108 123,676 124,093 Consumer instalment and other personal 68,506 69,181 67,200 67,516 Credit cards 7,617 7,617 8,623 8,623 Business and government (2) 240,352 242,295 224,442 225,145 441,816 446,201 423,941 425,377 Deposits (3) 643,133 645,402 552,314 553,444 Securitization and structured entities’ liabilities 27,461 28,159 27,159 27,342 Subordinated debt 8,513 8,790 6,995 7,223 This table excludes financial instruments with a carrying value approximating fair value, such as cash and cash equivalents, interest bearing deposits with banks, securities borrowed or purchased under resale agreements, customers’ liability under acceptances, other assets, acceptances, securities lent or sold under repurchase agreements and other liabilities. (1) Carrying value of loans is net of allowance. (2) Excludes $3,562 million of loans classified as FVTPL and $50 million of loans classified as FVOCI as at July 31, 2020, respectively ($2,156 million and $22 million as at October 31, 2019). (3) Excludes $17,467 million of structured note liabilities designated at FVTPL and accounted for at fair value ($15,829 million as at October 31, 2019). Fair Value Hierarchy We use a fair value hierarchy to categorize financial instruments according to the inputs we use in valuation techniques to measure fair value. Valuation Techniques and Significant Inputs We determine the fair value of publicly traded fixed maturity debt and equity securities using quoted prices in active markets (Level 1) when these are available. When quoted prices in active markets are not available, we determine the fair value of financial instruments using models such as discounted cash flows with observable market data for inputs such as yield and prepayment rates or broker quotes and other third-party vendor quotes (Level 2). Fair value may also be determined using models where significant market inputs are not observable due to inactive markets or minimal market activity (Level 3). We maximize the use of observable market inputs to the extent possible. We have considered the current market conditions due to COVID-19 Our Level 2 trading and FVOCI securities are primarily valued using discounted cash flow models with observable spreads or third-party vendor quotes. Level 2 structured note liabilities are valued using models with observable market information. Level 2 derivative assets and liabilities are valued using industry standard models and observable market information. The extent of our use of actively quoted market prices (Level 1), internal models using observable market information as inputs (Level 2) and models without observable market information as inputs (Level 3) in the valuation of securities, business and government loans classified as FVTPL, fair value liabilities, derivative assets and derivative liabilities is presented in the following tables: (Canadian $ in millions) July 31, 2020 October 31, 2019 Valued using quoted market prices Valued using models (with observable inputs) Valued using models (without observable inputs) Total Valued using quoted market prices Valued using models (with observable inputs) Valued using models (without observable inputs) Total Trading Securities Issued or guaranteed by: Canadian federal government 4,746 3,898 - 8,644 6,959 1,371 - 8,330 Canadian provincial and municipal governments 2,056 6,967 - 9,023 3,871 3,656 - 7,527 U.S. federal government 8,000 1,210 - 9,210 8,001 762 - 8,763 U.S. states, municipalities and agencies 38 370 - 408 48 626 - 674 Other governments 1,406 1,485 - 2,891 888 697 - 1,585 NHA MBS, U.S. agency MBS and CMO 5 9,113 584 9,702 14 10,494 538 11,046 Corporate debt 3,694 6,765 - 10,459 2,620 5,091 7 7,718 Trading loans - 45 - 45 - 103 - 103 Corporate equity 38,825 - - 38,825 40,155 2 - 40,157 58,770 29,853 584 89,207 62,556 22,802 545 85,903 FVTPL Securities Issued or guaranteed by: Canadian federal government 627 108 - 735 410 107 - 517 Canadian provincial and municipal governments 239 1,231 - 1,470 364 915 - 1,279 U.S. federal government 9 35 - 44 - 48 - 48 Other governments - 95 - 95 - 49 - 49 NHA MBS, U.S. agency MBS and CMO - 3 - 3 - 5 - 5 Corporate debt 97 8,140 - 8,237 146 8,071 - 8,217 Corporate equity 1,654 8 1,807 3,469 1,536 69 1,984 3,589 2,626 9,620 1,807 14,053 2,456 9,264 1,984 13,704 FVOCI Securities Issued or guaranteed by: Canadian federal government 21,492 6,090 - 27,582 11,168 776 - 11,944 Canadian provincial and municipal governments 1,944 2,781 - 4,725 3,798 2,214 - 6,012 U.S. federal government 17,046 1,633 - 18,679 15,068 907 - 15,975 U.S. states, municipalities and agencies 6 5,356 1 5,363 1 4,159 1 4,161 Other governments 2,748 4,402 - 7,150 4,396 2,939 - 7,335 NHA MBS, U.S. agency MBS and CMO - 11,538 - 11,538 - 14,000 - 14,000 Corporate debt 590 2,779 - 3,369 2,205 2,802 - 5,007 Corporate equity - - 87 87 - - 81 81 43,826 34,579 88 78,493 36,636 27,797 82 64,515 Business and government loans - 1,409 2,203 3,612 - 442 1,736 2,178 Fair Value Liabilities Securities sold but not yet purchased 25,323 5,256 - 30,579 22,393 3,860 - 26,253 Structured note liabilities and other note liabilities (1) - 17,467 - 17,467 - 15,829 - 15,829 Annuity liabilities (2) - 1,232 - 1,232 - 1,043 - 1,043 25,323 23,955 - 49,278 22,393 20,732 - 43,125 Derivative Assets Interest rate contracts 24 17,333 - 17,357 14 10,443 - 10,457 Foreign exchange contracts 9 15,804 - 15,813 7 9,262 - 9,269 Commodity contracts 457 1,555 - 2,012 329 817 - 1,146 Equity contracts 743 2,860 - 3,603 226 997 - 1,223 Credit default swaps - 11 - 11 - 49 - 49 1,233 37,563 - 38,796 576 21,568 - 22,144 Derivative Liabilities Interest rate contracts 31 12,836 - 12,867 11 7,943 - 7,954 Foreign exchange contracts 12 18,723 - 18,735 20 10,843 - 10,863 Commodity contracts 603 2,247 - 2,850 218 1,462 - 1,680 Equity contracts 478 4,907 - 5,385 103 2,896 - 2,999 Credit default swaps - 19 3 22 - 101 1 102 1,124 38,732 3 39,859 352 23,245 1 23,598 (1) These structured note liabilities and other note liabilities included in deposits have been designated at FVTPL. (2) These investment contract liabilities in our insurance business have been designated at FVTPL. Quantitative Information about Level 3 Fair Value Measurements The table below presents the fair values of our significant Level 3 financial instruments that are measured at a fair value on a recurring basis, the valuation techniques used to determine their fair values and the value ranges of significant unobservable inputs used in the valuations. We have not applied any other reasonably possible alternative assumption to the significant Level 3 categories of private equity investments, as the net asset values are provided by the investment or fund managers. Range of input values (1) As at July 31, 2020 (Canadian $ in millions, except as noted) Reporting line in fair value hierarchy table Fair value of assets Valuation techniques Significant unobservable inputs Low High Private equity (2) Corporate equity 1,807 Net Asset Value Net Asset Value na na EV/EBITDA Multiple 5x 16x Loans (3) Business and government loans 2,203 Discounted cash flows Discount margin 56bps 224bps NHA MBS and U.S. agency MBS and CMO NHA MBS and U.S. agency MBS and CMO 584 Discounted cash flows Prepayment rate 7% 86% Market Comparable Comparability Adjustment (4) (5.26 ) 5.54 (1) The low and high input values represent the highest and lowest actual level of inputs used to value a group of financial instruments in a particular product category. These input ranges do not reflect the level of input uncertainty, but are affected by the specific underlying instruments within each product category. The input ranges will therefore vary from period to period based on the characteristics of the underlying instruments held at each balance sheet date. (2) Included in private equity is $490 million of Federal Reserve Bank and U.S. Federal Home Loan Bank shares that we carry at cost, which approximates fair value, and hold to meet regulatory requirements. (3) The impact of assuming a 10 basis point increase or decrease in discount margin for business and government loans is $2 million. (4) Range of input values represents price per security adjustment. na – not applicable Significant Transfers Our policy is to record transfers of assets and liabilities between fair value hierarchy levels at their fair values as at the end of each reporting period, consistent with the date of the determination of fair value. Transfers between the various fair value hierarchy levels reflect changes in the availability of quoted market prices or observable market inputs that result from changes in market conditions. Transfers from Leve l The following table presents significant transfers between Level 1 and Level 2 for the three and nine months ended July 31, 2020 and July 31, 2019. (Canadian $ in millions) For the three months ended July 31, 2020 July 31, 2019 Level 1 to Level 2 Level 2 to Level 1 Level 1 to Level 2 Level 2 to Level 1 Trading Securities 994 2,682 1,734 901 FVTPL Securities 19 241 218 38 FVOCI Securities 1,768 4,294 1,834 2,335 Securities sold but not yet purchased 681 2,067 6,362 98 (Canadian $ in millions) For the nine months ended July 31, 2020 July 31, 2019 Level 1 to Level 2 Level 2 to Level 1 Level 1 to Level 2 Level 2 to Level 1 Trading Securities 5,761 3,952 5,392 4,260 FVTPL Securities 518 302 682 390 FVOCI Securities 9,032 7,012 9,723 3,910 Securities sold but not yet purchased 4,432 2,982 9,905 2,501 Changes in Level 3 Fair Value Measurements The table below presents a reconciliation of all changes in Level 3 financial instruments during the three and nine months ended July 31, 2020, including realized and unrealized gains (losses) included in earnings and other comprehensive income as well as transfers into and out of Level 3. Transfers from Level 2 into Level 3 were due to an increase in unobservable market inputs used in pricing the securities. Transfers out of Level 3 into Level 2 were due to an increase in observable market inputs used in pricing the securities. Change in fair value (Canadian $ in millions) For the three months ended July 31, 2020 Balance Included in Included in other comprehensive income (1) Issuances/ Sales (2) Maturities/ Transfers Transfers Fair Value Change in for instruments Trading Securities NHA MBS and U.S. agency MBS and CMO 487 (115 ) (18 ) 362 (151 ) - 41 (22 ) 584 (74 ) Corporate debt 48 10 (2 ) - (56 ) - - - - - Total trading securities 535 (105 ) (20 ) 362 (207 ) - 41 (22 ) 584 (74 ) FVTPL Securities Corporate equity 2,062 (23 ) (57 ) 58 (233 ) - - - 1,807 2 Total FVTPL securities 2,062 (23 ) (57 ) 58 (233 ) - - - 1,807 2 FVOCI Securities Issued or guaranteed by: U.S. states, municipalities and agencies 1 - - - - - - - 1 na Corporate equity 83 - - 4 - - - - 87 na Total FVOCI securities 84 - - 4 - - - - 88 na Business and government loans 2,028 - 95 765 - (685 ) - - 2,203 - Fair Value Liabilities Securities sold but not yet purchased - - - - - - - - - - Total fair value liabilities - - - - - - - - - - Derivative Liabilities Equity contracts - - - - - - - - - - Credit default swaps 4 - - - - - - (1 ) 3 - Total derivative liabilities 4 - - - - - - (1 ) 3 - (1) Foreign exchange translation on trading securities held by foreign subsidiaries is included in other comprehensive income, net foreign operations. (2) Includes proceeds recovered on securities sold but not yet purchased. (3) Changes in unrealized gains (losses) on Trading and FVTPL securities still held on July 31, 2020 are included in earnings for the period. Unrealized gains (losses) recognized on Level 3 financial instruments may be offset by related (losses) gains on hedge contracts. na – Not applicable Change in fair value (Canadian $ in millions) For the nine months ended July 31, 2020 Balance Included in Included in other comprehensive Issuances/ Sales (2) Maturities/ Transfers Transfers Fair Value Change in in income for instruments Trading Securities NHA MBS and U.S. agency MBS and CMO 538 (245 ) 12 811 (540 ) - 202 (194 ) 584 (158 ) Corporate debt 7 10 (2 ) 50 (68 ) - 3 - - (1 ) Total trading securities 545 (235 ) 10 861 (608 ) - 205 (194 ) 584 (159 ) FVTPL Securities Corporate equity 1,984 (27 ) 23 244 (418 ) - 1 - 1,807 7 Total FVTPL 1,984 (27 ) 23 244 (418 ) - 1 - 1,807 7 FVOCI Securities Issued or guaranteed by: U.S. states, municipalities and agencies 1 - - - - - - - 1 na Corporate equity 81 - - 6 - - - - 87 na Total FVOCI securities 82 - - 6 - - - - 88 na Business and government loans 1,736 (3 ) 183 1,705 - (1,418 ) - - 2,203 – Fair Value Liabilities Securities sold but not yet purchased - - - - - - - - - – Total fair value liabilities - - - - - - - - - – Derivative Liabilities Equity contracts - - - - - - - - - – Credit default swaps 1 - - - - - 3 (1 ) 3 – Total derivative liabilities 1 - - - - - 3 (1 ) 3 – (1) Foreign exchange translation on trading securities held by foreign subsidiaries is included in other comprehensive income, net foreign operations. (2) Includes proceeds recovered on securities sold but not yet purchased. (3) Changes in unrealized gains (losses) on Trading and FVTPL securities still held on July 31, 2020 are included in earnings for the period. Unrealized gains (losses) recognized on Level 3 financial instruments may be offset by related (losses) gains on hedge contracts. na – Not applicable The table below presents a reconciliation of all changes in Level 3 financial instruments during the three and nine months ended July 31, 2019, including realized and unrealized gains (losses) included in earnings and other comprehensive income. Change in fair value (Canadian $ in millions) For the three months ended July 31, 2019 Balance Included in Included in other income (1) Issuances/ Sales (2) Maturities/ Transfers Transfers Fair Value Change in unrealized gains (losses) recorded in income for instruments Trading Securities NHA MBS and U.S. agency MBS and CMO 215 (15 ) (3 ) 97 (96 ) - 53 (5 ) 246 (6 ) Corporate debt 7 - - 26 (6 ) - - (1 ) 26 - Total trading securities 222 (15 ) (3 ) 123 (102 ) - 53 (6 ) 272 (6 ) FVTPL Securities Corporate equity 1,907 10 (21 ) 77 (66 ) (1 ) - - 1,906 16 Total FVTPL 1,907 10 (21 ) 77 (66 ) (1 ) - - 1,906 16 FVOCI Securities Issued or guaranteed by: U.S. states, municipalities and agencies 1 - - - - - - - 1 na Corporate equity 69 - - 10 - - - - 79 na Total FVOCI securities 70 - - 10 - - - - 80 na Business and government loans 2,172 - (31 ) 155 - (132 ) - - 2,164 - Fair Value Liabilities Securities sold but not yet purchased - - - - 172 - - - 172 - Total fair value liabilities - - - - 172 - - - 172 - Derivative Liabilities Equity contracts - - - - - - - - - - Credit default swaps - - - - - - 1 - 1 - Total derivative liabilities - - - - - - 1 - 1 - (1) Foreign exchange translation on trading securities held by foreign subsidiaries is included in other comprehensive income, net foreign operations. (2) Includes proceeds recovered on securities sold but not yet purchased. (3) Changes in unrealized gains (losses) on Trading and FVTPL securities still held on July 31, 2019 are included in earnings for the period. Unrealized gains (losses) recognized on Level 3 financial instruments may be offset by related (losses) gains on hedge contracts. na – Not applicable Change in fair value (Canadian $ in millions) For the nine months ended July 31, 2019 Balance Included in Included in other comprehensive Issuances/ Sales (2) Maturities/ Transfers Transfers Fair Value Change in unrealized gains (losses) recorded for instruments still held (3) Trading Securities NHA MBS and U.S. agency MBS and CMO 255 (22 ) 1 280 (326 ) - 98 (40 ) 246 (13 ) Corporate debt 7 - - 32 (12 ) - - (1 ) 26 - Total trading securities 262 (22 ) 1 312 (338 ) - 98 (41 ) 272 (13 ) FVTPL Securities Corporate equity 1,825 20 2 324 (264 ) (1 ) - - 1,906 36 Total FVTPL 1,825 20 2 324 (264 ) (1 ) - - 1,906 36 FVOCI Securities Issued or guaranteed by: U.S. states, municipalities and agencies 1 - - - - - - - 1 na Corporate equity 62 - - 17 - - - - 79 na Total FVOCI securities 63 - - 17 - - - - 80 na Business and government loans 1,450 7 13 1,369 - (675 ) - - 2,164 - Fair Value Liabilities Securities sold but not yet purchased - - - (7 ) 179 - - - 172 - Total fair value liabilities - - - (7 ) 179 - - - 172 - Derivative Liabilities Equity contracts 1 - - - - - - (1 ) - - Credit default swaps 1 - - - - - 1 (1 ) 1 - Total derivative liabilities 2 - - - - - 1 (2 ) 1 - (1) Foreign exchange translation on trading securities held by foreign subsidiaries is included in other comprehensive income, net foreign operations. (2) Includes proceeds recovered on securities sold but not yet purchased. (3) Changes in unrealized gains (losses) on Trading and FVTPL securities still held on July 31, 2019 are included in earnings for the period. Unrealized gains (losses) recognized on Level 3 financial instruments may be offset by related (losses) gains on hedge contracts. na – Not applicable

Capital Management

Capital Management	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Capital Management	Note 8: Capital Management Our objective is to maintain a strong capital position in a cost-effective structure that: is appropriate given our target regulatory capital ratios and internal assessment of required economic capital; underpins our operating groups’ business strategies; supports depositor, investor and regulator confidence, while building long-term shareholder value; and is consistent with our target credit ratings. As at July 31, 2020, we met OSFI’s target capital ratio requirements, which include a 2.5% Capital Conservation Buffer, a 1.0% Common Equity Surcharge for Domestic Systemically Important Banks (“D-SIBs”), D-SIBs. 15 18

Employee Compensation

Employee Compensation	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Employee Compensation	Note 9: Employee Compensation Stock Options We did not grant any stock options during the three months ended July 31, 2020 and 2019. During the nine months ended July 31, 2020, we granted a total of 976,087 stock options (931,047 stock options during the nine months ended July 31, 2019). The weighted-average fair value of options granted during the nine months ended July 31, 2020 was $9.46 per option ($10.23 per option for the nine months ended July 31, 2019). To determine the fair value of the stock option tranches (i.e. the portion that vests each year) on the grant date, the following ranges of values were used for each option pricing assumption: For stock options granted during the nine months ended July 31, 2020 July 31, 2019 Expected dividend yield 4.3% 5.7% Expected share price volatility 15.4% 20.0% - 20.1% Risk-free rate of return 1.9% - 2.0% 2.5% Expected period until exercise (in years) 6.5 - 7.0 6.5 - 7.0 Exercise price ($) 101.47 89.90 Changes to the input assumptions can result in different fair value estimates. Pension and Other Employee Future Benefit Expenses Pension and other employee future benefit expenses are determined as follows: (Canadian $ in millions) Pension benefit plans Other employee future benefit plans For the three months ended July 31, 2020 July 31, 2019 July 31, 2020 July 31, 2019 Current service cost 62 48 2 2 Net interest (income) expense on net defined benefit (asset) liability 1 (5 ) 8 10 Administrative expenses 1 1 - - Benefits expense 64 44 10 12 Canada and Quebec pension plan expense 22 23 - - Defined contribution expense 37 37 - - Total pension and other employee future benefit expenses 123 104 10 12 (Canadian $ in millions) Pension benefit plans Other employee future benefit plans For the nine months ended July 31, 2020 July 31, 2019 July 31, 2020 July 31, 2019 Current service cost 187 144 8 7 Net interest (income) expense on net defined benefit (asset) liability 1 (14 ) 24 29 Past service income - (5 ) - - Administrative expenses 3 3 - - Benefits expense 191 128 32 36 Canada and Quebec pension plan expense 75 70 - - Defined contribution expense 135 127 - - Total pension and other employee future benefit expenses 401 325 32 36

Earnings Per Share

Earnings Per Share	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Earnings Per Share	Note 10: Earnings Per Share Basic earnings per share is calculated by dividing net income attributable to equity holders of the bank, after deducting dividends on preferred shares and distributions payable on other equity instruments, by the daily average number of fully paid common shares outstanding throughout the period. Diluted earnings per share is calculated in the same manner, with further adjustments made to reflect the dilutive impact of instruments convertible into our common shares. The following tables present our basic and diluted earnings per share: Basic Earnings Per Common Share (Canadian $ in millions, except as noted) For the three months ended For the nine months ended July 31, 2020 July 31, 2019 July 31, 2020 July 31, 2019 Net income attributable to equity holders of the bank 1,232 1,557 3,513 4,564 Dividends on preferred shares and distributions payable on other equity instruments (73 ) (59 ) (195 ) (159) Net income available to common shareholders 1,159 1,498 3,318 4,405 Weighted-average number of common shares outstanding (in thousands) 641,300 638,900 640,129 638,803 Basic earnings per share (Canadian $) 1.81 2.34 5.18 6.90 Diluted Earnings Per Common Share Net income available to common shareholders adjusted for impact of dilutive instruments 1,159 1,498 3,318 4,405 Weighted-average number of common shares outstanding (in thousands) 641,300 638,900 640,129 638,803 Effect of dilutive instruments Stock options potentially exercisable (1) 2,400 5,734 3,473 5,697 Common shares potentially repurchased (2,046 ) (4,184 ) (2,721 ) (4,137) Weighted-average number of diluted common shares outstanding (in thousands) 641,654 640,450 640,881 640,363 Diluted earnings per share (Canadian $) 1.81 2.34 5.18 6.88 (1) In computing diluted earnings per share we excluded average stock options outstanding of 4,238,334 and 3,124,912 with a weighted-average exercise price of $94.30 and $99.72, respectively, for the three and nine months ended July 31, 2020 (687,059 and 908,194 with a weighted-average exercise price of $104.14 and $102.98, respectively, for the three and nine months ended July 31, 2019) as the average share price for the period did not exceed the exercise price.

Income Taxes

Income Taxes	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Income Taxes	Note 11: Income Taxes The Canada Revenue Agency (“CRA”) has reassessed us for additional income tax and interest in an amount of approximately $941 million, to date, in respect of certain 2011-2015 Canadian corporate dividends. In its reassessments, the CRA denied dividend deductions on the basis that the dividends were received as part of a “dividend rental arrangement”. The tax rules raised by the CRA were prospectively addressed in the 2015 and 2018 Canadian Federal Budgets. In the future, we expect to be reassessed for significant income tax for similar activities in subsequent years. We remain of the view that our tax filing positions were appropriate and intend to challenge all reassessments.

Operating Segmentation

Operating Segmentation	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Operating Segmentation	Note 12: Operating Segmentation Operating Groups We conduct our business through three operating groups, each of which has a distinct mandate. Our operating groups are Personal and Commercial Banking (“P&C”) (comprised of Canadian Personal and Commercial Banking (“Canadian P&C”) and U.S. Personal and Commercial Banking (“U.S. P&C”)), BMO Wealth Management and BMO Capital Markets (“BMO CM”), along with a Corporate Services unit. For additional information refer to Note 25 of our annual consolidated financial statements for the year ended October 31, 2019 on pages 199 to 202 of the Annual Report. Our results and average assets, grouped by operating segment, are as follows: (Canadian $ in millions) For the three months ended July 31, 2020 Canadian U.S. P&C BMO Wealth BMO CM Corporate Total Net interest income (2) 1,509 1,107 229 952 (262 ) 3,535 Non-interest 453 292 2,255 576 78 3,654 Total Revenue 1,962 1,399 2,484 1,528 (184 ) 7,189 Provision for credit losses on impaired loans 257 109 1 79 - 446 Provision for credit losses on performing loans 313 223 7 58 7 608 Total Provision for credit losses 570 332 8 137 7 1,054 Insurance claims, commissions and changes in policy benefit liabilities - - 1,189 - - 1,189 Depreciation and amortization 117 131 93 59 - 400 Other non-interest 843 621 744 766 70 3,044 Income (loss) before taxes 432 315 450 566 (261 ) 1,502 Provision for (recovery of) income taxes 112 52 109 140 (143 ) 270 Reported net income (loss) 320 263 341 426 (118 ) 1,232 Average Assets 252,028 140,615 46,308 379,131 159,682 977,764 For the three months ended July 31, 2019 Canadian U.S. P&C BMO Wealth BMO CM Corporate Total Net interest income (2) 1,500 1,066 237 537 (123 ) 3,217 Non-interest 543 298 1,876 670 62 3,449 Total Revenue 2,043 1,364 2,113 1,207 (61 ) 6,666 Provision for credit losses on impaired loans 174 61 - 7 1 243 Provision for (recovery of) credit losses on performing loans 30 37 (2 ) 3 (5 ) 63 Provision for (recovery of) credit losses 204 98 (2 ) 10 (4 ) 306 Insurance claims, commissions and changes in policy benefit liabilities - - 887 - - 887 Depreciation and amortization 87 111 68 35 - 301 Other non-interest 874 693 817 764 42 3,190 Income (loss) before taxes 878 462 343 398 (99 ) 1,982 Provision for (recovery of) income taxes 228 94 93 84 (74 ) 425 Reported net income (loss) 650 368 250 314 (25 ) 1,557 Average Assets 239,948 129,098 41,891 343,292 82,734 836,963 (Canadian $ in millions) For the nine months ended July 31, 2020 Canadian U.S. P&C BMO Wealth BMO CM Corporate Total Net interest income 4,561 3,287 672 2,503 (582 ) 10,441 Non-interest 1,443 912 4,727 1,445 232 8,759 Total Revenue 6,004 4,199 5,399 3,948 (350 ) 19,200 Provision for credit losses on impaired loans 607 365 4 205 2 1,183 Provision for credit losses on performing loans 612 315 13 390 8 1,338 Total Provision for credit losses 1,219 680 17 595 10 2,521 Insurance claims, commissions and changes in policy benefit liabilities - - 1,708 - - 1,708 Depreciation and amortization 373 417 250 171 - 1,211 Non-interest 2,549 1,913 2,387 2,264 305 9,418 Income (loss) before taxes 1,863 1,189 1,037 918 (665 ) 4,342 Provision for (recovery of ) 482 236 261 210 (360 ) 829 Reported net income (loss) 1,381 953 776 708 (305 ) 3,513 Average Assets 251,325 139,196 45,234 370,363 129,399 935,517 For the nine months ended July 31, 2019 Canadian U.S. P&C BMO Wealth BMO CM Corporate Total Net interest income 4,342 3,160 699 1,695 (372 ) 9,524 Non-interest 1,564 858 5,396 1,885 169 9,872 Total Revenue 5,906 4,018 6,095 3,580 (203 ) 19,396 Provision for (recovery of) credit losses on impaired loans 410 94 1 20 (5 ) 520 Provision for (recovery of) credit losses on performing loans 52 33 (1 ) 20 (5 ) 99 Provision for (recovery of) credit losses 462 127 - 40 (10 ) 619 Insurance claims, commissions and changes in policy benefit liabilities - - 2,374 - - 2,374 Depreciation and amortization 250 338 200 107 - 895 Non-interest 2,610 2,008 2,463 2,380 287 9,748 Income (loss) before taxes 2,584 1,545 1,058 1,053 (480 ) 5,760 Provision for (recovery of) income taxes 670 327 265 233 (299 ) 1,196 Reported net income (loss) 1,914 1,218 793 820 (181 ) 4,564 Average Assets 235,562 124,590 40,345 342,829 82,778 826,104 (1) Corporate Services includes Technology and Operations. (2) Operating groups report on a taxable equivalent basis (“teb”). Revenue and the provision for income taxes are increased on tax-exempt before-tax tax-exempt Certain comparative figures have been reclassified to conform with the current period’s presentation.

Legal Proceedings

Legal Proceedings	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Legal Proceedings	Note 13: Legal Proceedings The bank and its subsidiaries are party to legal proceedings, including regulatory investigations, in the ordinary course of business. Last pre-judgment An appropriate provision is in place. While there is inherent difficulty in predicting the ultimate outcome of this or other proceedings, management does not expect the outcome of any of these proceedings, individually or in the aggregate, to have a material adverse effect on the consolidated financial position or the results of operations of the bank.

Acquisition

Acquisition	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Acquisition	Note 14: Acquisition On April 6, 2020, we completed the acquisition of Clearpool Group Inc. (“Clearpool”), a New York-based provider of electronic trading solutions, operating in the United States and Canada, for cash consideration of US$139 million (CAD$196 million) plus contingent consideration of approximately US$8 million (CAD$11 million) based on meeting certain revenue targets over four years. The acquisition was accounted for as a business combination, and the acquired business and corresponding goodwill are included in our Capital Markets reporting segment. As part of this acquisition, we acquired intangible assets of $85 million and goodwill of $138 million. The intangible assets are being amortized over three to twelve years. Goodwill related to this acquisition is not deductible for tax purposes. The fair values of the assets acquired and liabilities assumed at the date of acquisition are as follows: (Canadian $ in millions) Clearpool Goodwill and intangible assets 223 Other assets 44 Total assets 267 Liabilities 60 Purchase price 207 The purchase price allocation for Clearpool is subject to refinement as we complete the valuation of the assets acquired and liabilities assumed.

Basis of Presentation (Tables)

Basis of Presentation (Tables)	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Reconcilation of lease commitements	The following table sets out a reconciliation of our operating lease commitments, as disclosed under IAS 17 Leases (Canadian $ in millions) November 1, 2019 Operating lease commitment at October 31, 2019 as disclosed in our consolidated financial statements 3,800 Discounted using the incremental borrowing rate at November 1, 2019 (310 ) Finance lease liabilities recognized as at October 31, 2019 41 Recognition exemption for low-value (13 ) Extension and termination options reasonably certain to be exercised 37 Executory costs not included in the lease liability (166 ) Leases signed but not yet started (1,222 ) Lease liabilities recognized at November 1, 2019 2,167

Securities (Tables)

Securities (Tables)	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Unrealized gains and losses on securities at fair value through other comprehensive income	Unrealized Gains and Losses on FVOCI Securities The following table summarizes the unrealized gains and losses: (Canadian $ in millions) July 31, 2020 October 31, 2019 Cost/ Gross Gross Cost/ Gross Gross Amortized cost unrealized gains unrealized losses Fair value Amortized cost unrealized gains unrealized losses Fair value Issued or guaranteed by: Canadian federal government 27,329 253 – 27,582 11,876 72 4 11,944 Canadian provincial and municipal governments 4,585 140 – 4,725 5,907 106 1 6,012 U.S. federal government 17,646 1,039 6 18,679 15,363 617 5 15,975 U.S. states, municipalities and agencies 5,196 169 2 5,363 4,091 74 4 4,161 Other governments 6,949 205 4 7,150 7,179 158 2 7,335 National Housing Act (“NHA”) mortgage-backed securities (“MBS”) 1,614 51 2 1,663 1,953 18 1 1,970 U.S. agency MBS and collateralized mortgage obligations (“CMO”) 9,543 336 4 9,875 11,966 106 42 12,030 Corporate debt 3,241 129 1 3,369 4,899 110 2 5,007 Corporate equity 85 2 – 87 79 2 - 81 Total 76,188 2,324 19 78,493 63,313 1,263 61 64,515 Unrealized gains (losses) may be offset by related (losses) gains on hedge contracts.
Summary of Interest Income Calculated Using the Effective Interest Method	The following table presents interest income calculated using the effective interest method: (Canadian $ in millions) For the three months ended For the nine months ended July 31, 2020 July 31, 2019 July 31, 2020 July 31, 2019 FVOCI - Debt 185 403 823 1,202 Amortized cost 144 75 455 163 Total 329 478 1,278 1,365

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Summary of Credit Risk Exposures for Loans Carried at Amortized Cost or FVTPL	The following table sets out our credit risk exposure for all loans carried at amortized cost, FVOCI or FVTPL as at July 31, 2020 and October 31, 2019. Stage 1 represents those performing loans carried with up to a 12 month expected credit loss, Stage 2 represents those performing loans carried with a lifetime expected credit loss, and Stage 3 represents those loans with a lifetime credit loss that are credit impaired. (Canadian $ in millions) July 31, 2020 October 31, 2019 Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total Loans: Residential mortgages Exceptionally low 1 - - 1 - - - - Very low 79,472 278 - 79,750 79,011 242 - 79,253 Low 22,654 2,765 - 25,419 20,853 2,821 - 23,674 Medium 11,594 6,560 - 18,154 13,651 4,578 - 18,229 High 91 362 - 453 124 397 - 521 Not rated 1,082 192 - 1,274 1,531 118 - 1,649 Impaired - - 430 430 - - 414 414 Allowance for credit losses 65 58 17 140 15 32 17 64 Carrying amount 114,829 10,099 413 125,341 115,155 8,124 397 123,676 Loans: Consumer instalment and other personal Exceptionally low 1,584 33 - 1,617 21,023 25 - 21,048 Very low 25,827 43 - 25,870 16,491 194 - 16,685 Low 20,281 873 - 21,154 9,894 346 - 10,240 Medium 9,921 4,856 - 14,777 10,510 4,264 - 14,774 High 367 1,493 - 1,860 397 1,423 - 1,820 Not rated 3,349 108 - 3,457 2,594 107 - 2,701 Impaired - - 433 433 - - 468 468 Allowance for credit losses 115 420 127 662 82 318 136 536 Carrying amount 61,214 6,986 306 68,506 60,827 6,041 332 67,200 Loans: Credit cards Exceptionally low 2,155 - - 2,155 2,418 - - 2,418 Very low 1,076 16 - 1,092 1,214 16 - 1,230 Low 904 164 - 1,068 970 158 - 1,128 Medium 1,700 965 - 2,665 2,020 876 - 2,896 High 49 388 - 437 140 440 - 580 Not rated 530 - - 530 606 1 - 607 Impaired - - - - - - - - Allowance for credit losses 60 270 - 330 43 193 - 236 Carrying amount 6,354 1,263 - 7,617 7,325 1,298 - 8,623 Loans: Business and government (1) Acceptable Investment grade 124,728 6,757 - 131,485 134,587 1,028 - 135,615 Sub-investment 93,201 27,697 - 120,898 96,731 11,553 - 108,284 Watchlist - 8,082 - 8,082 - 5,556 - 5,556 Impaired - - 3,550 3,550 - - 1,747 1,747 Allowance for credit losses 573 971 575 2,119 263 441 310 1,014 Carrying amount 217,356 41,565 2,975 261,896 231,055 17,696 1,437 250,188 Commitments and financial guarantee contracts Acceptable Investment grade 132,838 1,491 - 134,329 134,920 884 - 135,804 Sub-investment 42,765 17,614 - 60,379 45,178 6,435 - 51,613 Watchlist - 3,419 - 3,419 - 2,133 - 2,133 Impaired - - 1,164 1,164 - - 324 324 Allowance for credit losses 212 232 12 456 119 103 22 244 Carrying amount (2) 175,391 22,292 1,152 198,835 179,979 9,349 302 189,630 (1) Includes customers’ liability under acceptances. (2) Represents the total contractual amounts of undrawn credit facilities and other off-balance
Summary of Continuity in Loss Allowance by Each Product Type	The following table shows the continuity in the loss allowance by product type. Transfers represent the amount of expected credit loss (“ECL”) that moved between stages during the period, for example, moving from a 12-month (Canadian $ in millions) For the three months ended July 31, 2020 July 31, 2019 Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total Loans: Residential mortgages Balance as at beginning of period 29 37 27 93 16 37 44 97 Transfer to Stage 1 8 (7 ) (1 ) - 7 (6 ) (1 ) - Transfer to Stage 2 (1 ) 4 (3 ) - (1 ) 2 (1 ) - Transfer to Stage 3 - (1 ) 1 - - (3 ) 3 - Net remeasurement of loss allowance 27 30 10 67 (9 ) 6 - (3 ) Loan originations 4 - - 4 2 - - 2 Derecognitions and maturities - (2 ) - (2 ) (1 ) (1 ) - (2 ) Model changes (1 ) (3 ) - (4 ) - - - - Total Provision for Credit Losses (“PCL”) (1) 37 21 7 65 (2 ) (2 ) 1 (3 ) Write-offs (2) - - (3 ) (3 ) - - (6 ) (6 ) Recoveries of previous write-offs - - 2 2 - - 7 7 Foreign exchange and other (1 ) - (6 ) (7 ) - - (8 ) (8 ) Balance as at end of period 65 58 27 150 14 35 38 87 Loans: Consumer instalment and other personal Balance as at beginning of period 116 407 125 648 86 324 128 538 Transfer to Stage 1 59 (57 ) (2 ) - 44 (42 ) (2 ) - Transfer to Stage 2 (10 ) 21 (11 ) - (4 ) 18 (14 ) - Transfer to Stage 3 (1 ) (27 ) 28 - (1 ) (32 ) 33 - Net remeasurement of loss allowance (50 ) 103 56 109 (40 ) 66 52 78 Loan originations 9 - - 9 12 - - 12 Derecognitions and maturities (4 ) (9 ) - (13 ) (4 ) (13 ) - (17 ) Model changes 11 8 - 19 - - - - Total PCL (1) 14 39 71 124 7 (3 ) 69 73 Write-offs (2) - - (81 ) (81 ) - - (80 ) (80 ) Recoveries of previous write-offs - - 22 22 - - 25 25 Foreign exchange and other (3 ) (3 ) (10 ) (16 ) (1 ) (1 ) (7 ) (9 ) Balance as at end of period 127 443 127 697 92 320 135 547 Loans: Credit cards Balance as at beginning of period 115 319 - 434 77 231 - 308 Transfer to Stage 1 50 (50 ) - - 28 (28 ) - - Transfer to Stage 2 (9 ) 9 - - (5 ) 5 - - Transfer to Stage 3 - (48 ) 48 - (1 ) (46 ) 47 - Net remeasurement of loss allowance (44 ) 105 20 81 (24 ) 79 24 79 Loan originations 5 - - 5 5 - - 5 Derecognitions and maturities (1 ) (7 ) - (8 ) (1 ) (6 ) - (7 ) Model changes (1 ) (10 ) - (11 ) - - - - Total PCL (1) - (1 ) 68 67 2 4 71 77 Write-offs (2) - - (80 ) (80 ) - - (91 ) (91 ) Recoveries of previous write-offs - - 19 19 - - 20 20 Foreign exchange and other (3 ) (1 ) (7 ) (11 ) - 1 - 1 Balance as at end of period 112 317 - 429 79 236 - 315 Loans: Business and government Balance as at beginning of period 580 795 586 1,961 336 423 260 1,019 Transfer to Stage 1 45 (45 ) - - 31 (30 ) (1 ) - Transfer to Stage 2 (65 ) 66 (1 ) - (16 ) 17 (1 ) - Transfer to Stage 3 (4 ) (163 ) 167 - (1 ) (14 ) 15 - Net remeasurement of loss allowance 145 510 134 789 (23 ) 91 89 157 Loan originations 53 - - 53 53 - - 53 Derecognitions and maturities (21 ) (36 ) - (57 ) (28 ) (22 ) - (50 ) Model changes (7 ) (4 ) - (11 ) - - - - Total PCL (1) 146 328 300 774 16 42 102 160 Write-offs (2) - - (300 ) (300 ) - - (52 ) (52 ) Recoveries of previous write-offs - - 37 37 - - 2 2 Foreign exchange and other (5 ) 10 (46 ) (41 ) (1 ) (4 ) (15 ) (20 ) Balance as at end of period 721 1,133 577 2,431 351 461 297 1,109 Total as at end of period 1,025 1,951 731 3,707 536 1,052 470 2,058 Comprised of: Loans 813 1,719 719 3,251 409 946 447 1,802 Other credit instruments (3) 212 232 12 456 127 106 23 256 (1) Excludes PCL on other assets of $24 million for the three months ended July 31, 2020 ($(1) million for the three months ended July 31, 2019). (2) Generally, we continue to seek recovery on amounts that were written off during the year, unless the loan is sold, we no longer have the right to collect or we have exhausted all reasonable efforts to collect. (3) Recorded in other liabilities on the Consolidated Balance Sheet. The following table shows the continuity in the loss allowance by each product type: (Canadian $ in millions) For the nine months ended July 31, 2020 July 31, 2019 Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Total Loans: Residential mortgages Balance as at beginning of period 15 33 38 86 20 38 44 102 Transfer to Stage 1 19 (17 ) (2 ) - 21 (19 ) (2 ) - Transfer to Stage 2 (2 ) 7 (5 ) - (2 ) 5 (3 ) - Transfer to Stage 3 - (4 ) 4 - - (7 ) 7 - Net remeasurement of loss allowance 29 47 17 93 (29 ) 21 7 (1 ) Loan originations 8 - - 8 5 - - 5 Derecognitions and maturities (1 ) (4 ) - (5 ) (1 ) (3 ) - (4 ) Model changes (3 ) (5 ) - (8 ) - - - - Total PCL (1) 50 24 14 88 (6 ) (3 ) 9 - Write-offs (2) - - (9 ) (9 ) - - (13 ) (13 ) Recoveries of previous write-offs - - 6 6 - - 12 12 Foreign exchange and other - 1 (22 ) (21 ) - - (14 ) (14 ) Balance as at end of period 65 58 27 150 14 35 38 87 Loans: Consumer instalment and other personal Balance as at beginning of period 89 333 136 558 90 326 144 560 Transfer to Stage 1 138 (131 ) (7 ) - 131 (122 ) (9 ) - Transfer to Stage 2 (20 ) 66 (46 ) - (13 ) 62 (49 ) - Transfer to Stage 3 (3 ) (79 ) 82 - (4 ) (84 ) 88 - Net remeasurement of loss allowance (112 ) 247 162 297 (134 ) 168 112 146 Loan originations 32 - - 32 35 - - 35 Derecognitions and maturities (12 ) (27 ) - (39 ) (12 ) (30 ) - (42 ) Model changes 16 33 - 49 - - - - Total PCL (1) 39 109 191 339 3 (6 ) 142 139 Write-offs (2) - - (248 ) (248 ) - - (233 ) (233 ) Recoveries of previous write-offs - - 64 64 - - 97 97 Foreign exchange and other (1 ) 1 (16 ) (16 ) (1 ) - (15 ) (16 ) Balance as at end of period 127 443 127 697 92 320 135 547 Loans: Credit cards Balance as at beginning of period 80 225 - 305 74 219 - 293 Transfer to Stage 1 107 (107 ) - - 78 (78 ) - - Transfer to Stage 2 (25 ) 25 - - (16 ) 16 - - Transfer to Stage 3 (1 ) (129 ) 130 - (1 ) (125 ) 126 - Net remeasurement of loss allowance (57 ) 332 68 343 (68 ) 221 58 211 Loan originations 13 - - 13 15 - - 15 Derecognitions and maturities (3 ) (19 ) - (22 ) (3 ) (18 ) - (21 ) Model changes (1 ) (10 ) - (11 ) - - - - Total PCL (1) 33 92 198 323 5 16 184 205 Write-offs (2) - - (257 ) (257 ) - - (250 ) (250 ) Recoveries of previous write-offs - - 66 66 - - 66 66 Foreign exchange and other (1 ) - (7 ) (8 ) - 1 - 1 Balance as at end of period 112 317 - 429 79 236 - 315 Loans: Business and government Balance as at beginning of period 338 496 311 1,145 298 408 209 915 Transfer to Stage 1 109 (102 ) (7 ) - 139 (135 ) (4 ) - Transfer to Stage 2 (118 ) 121 (3 ) - (41 ) 53 (12 ) - Transfer to Stage 3 (6 ) (226 ) 232 - (1 ) (41 ) 42 - Net remeasurement of loss allowance 321 883 558 1,762 (141 ) 230 159 248 Loan originations 153 - - 153 163 - - 163 Derecognitions and maturities (63 ) (86 ) - (149 ) (75 ) (57 ) - (132 ) Model changes (30 ) 8 - (22 ) - - - - Total PCL (1) 366 598 780 1,744 44 50 185 279 Write-offs (2) - - (516 ) (516 ) - - (123 ) (123 ) Recoveries of previous write-offs - - 60 60 - - 61 61 Foreign exchange and other 17 39 (58 ) (2 ) 9 3 (35 ) (23 ) Balance as at end of period 721 1,133 577 2,431 351 461 297 1,109 Total as at end of period 1,025 1,951 731 3,707 536 1,052 470 2,058 Comprised of: Loans 813 1,719 719 3,251 409 946 447 1,802 Other credit instruments (3) 212 232 12 456 127 106 23 256 (1) Excludes PCL on other assets of $27 million for the nine months ended July 31, 2020 ($(4) million for the nine months ended July 31, 2019). (2) Generally, we continue to seek recovery on amounts that were written off during the year, unless the loan is sold, we no longer have the right to collect or we have exhausted all reasonable efforts to collect. (3) Recorded in other liabilities on the Consolidated Balance Sheet.
Schedule of Loans and Allowance for Credit Losses by Geographic Region	Loans and allowance for credit losses by geographic region as at July 31, 2020 and October 31, 2019 are as follows: (Canadian $ in millions) July 31, 2020 October 31, 2019 Gross Allowance for credit losses on impaired loans (2) Allowance for credit losses on performing loans (3) Net Amount Gross amount Allowance for credit losses on impaired loans (2) Allowance for credit losses on performing loans (3) Net Amount By geographic region (1): Canada 270,348 345 1,335 268,668 258,842 207 740 257,895 United States 166,278 374 1,164 164,740 158,454 256 630 157,568 Other countries 11,953 - 33 11,920 10,648 - 17 10,631 Total 448,579 719 2,532 445,328 427,944 463 1,387 426,094 (1) Geographic region is based upon country of ultimate risk. (2) Excludes allowance for credit losses on impaired loans of $12 million for other credit instruments, which is included in other liabilities ($22 million as at October 31, 2019). (3) Excludes allowance for credit losses on performing loans of $444 million for other credit instruments, which is included in other liabilities ($222 million as at October 31, 2019).
Schedule of Impaired Loans, Including the Related Allowances	Impaired (Stage 3) loans, including the related allowances, as at July 31, 2020 and October 31, 2019 are as follows: (Canadian $ in millions) July 31, 2020 October 31, 2019 Gross impaired Allowance for credit losses Net impaired Gross impaired Allowance for credit losses on impaired loans (4) Net impaired amount (3) Residential mortgages 430 17 413 414 17 397 Consumer instalment and other personal 433 127 306 468 136 332 Business and government (1) 3,550 575 2,975 1,747 310 1,437 Total 4,413 719 3,694 2,629 463 2,166 By geographic region (2): Canada 1,469 345 1,124 914 207 707 United States 2,885 374 2,511 1,715 256 1,459 Other countries 59 - 59 - - - Total 4,413 719 3,694 2,629 463 2,166 (1) Includes customers’ liability under acceptances. (2) Geographic region is based upon the country of ultimate risk. (3) Gross impaired loans and net impaired loans exclude purchased credit impaired loans. (4) Excludes allowance for credit losses on impaired loans of $12 million for other credit instruments, which is included in other liabilities ($22 million as at October 31, 2019).
Summary of Loans that are Past Due but not Classified as Impaired	The following table presents loans that are past due but not classified as impaired as at July 31, 2020 and October 31, 2019. (Canadian $ in millions) July 31, 2020 October 31, 2019 1 to 29 days 30 to 89 days 90 days or more Total 1 to 29 days 30 to 89 days 90 days or more Total Residential mortgages 598 335 28 961 806 465 16 1,287 Credit card, consumer instalment and other personal 1,261 328 81 1,670 1,590 426 87 2,103 Business and government 387 293 32 712 351 207 59 617 Total 2,246 956 141 3,343 2,747 1,098 162 4,007 Fully secured loans with amounts past due between 90 and 180 days that we have not classified as impaired totalled $43 million and $54 million as at July 31, 2020 and October 31, 2019, respectively.
Summary of Key Economic Variables Used in Base Case	The following table shows the key economic variables we use to estimate our allowance on performing loans during the forecast period. This table is typically provided on an annual basis. However, given the significant level of change in the forward-looking information since the end of 2019, the disclosures have been provided as an update to the bank’s Annual Report for the year ended October 31, 2019. The values shown represent the national average values for calendar 2020 and calendar 2021. The base case scenario reflects our view of the most probable outcome. While the values disclosed below are national variables, we use regional variables in our underlying models where considered appropriate and consider factors impacting particular industries. Benign scenario Base scenario Adverse scenario (1) 2020 2021 2020 2021 2020 2021 All figures are average annual values July 31, October 31, July 31, October 31, July 31, October 31, July 31, October 31, July 31, October 31, July 31, October 31, Real gross domestic product (2) Canada (4.6) % 2.9% 8.9 % 2.5% (6.0) % 1.7% 6.0 % 1.6% (7.6 ) % (2.3)% 3.7 % 0.5% United States (4.1) % 2.4% 7.8 % 2.4% (5.5) % 1.8% 5.0 % 1.9% (7.1 ) % (2.0)% 2.5 % 0.6% Corporate BBB 10-year Canada 2.1 % 2.0% 1.9 % 2.1% 2.4 % 2.3% 2.3 % 2.3% 2.8 % 4.5% 3.1 % 4.1% United States 2.2 % 1.8% 1.9 % 2.0% 2.5 % 2.3% 2.4 % 2.4% 3.0 % 4.1% 3.2 % 3.6% Unemployment rates Canada 8.5 % 5.1% 6.5 % 5.0% 9.5 % 5.7% 8.0 % 5.9% 10.9 % 8.5% 10.0 % 9.0% United States 7.5 % 3.3% 5.4 % 3.2% 8.9 % 3.7% 7.0 % 3.8% 10.3 % 6.1% 8.9 % 6.8% Housing Price Index (“HPI”) (2) Canada (3) 5.3 % 3.7% 5.4 % 3.7% 3.5 % 2.0% 0.0 % 2.5% 0.8 % (12.3)% (7.5) % (4.7)% United States (4) 2.4 % 4.4% 4.6 % 4.2% 1.0 % 3.0% 1.6 % 2.7% (0.4) % (5.7)% (1.9) % (2.2)% (1) In Q4 2019, the adverse scenario was reflective of a typical recession that extends for four quarters. However, beginning Q2 2020, the adverse scenario used is reflective of a more adverse outcome compared with our base case forecast. (2) Real gross domestic product and housing price index are year-over-year growth rates. (3) In Canada, we use the HPI Benchmark Composite. (4) In the United States, we use the National Case-Shiller House Price Index.

Deposits and Subordinated Debt

Deposits and Subordinated Debt (Tables)	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Summary of Deposits	Deposits Payable on demand Payable Payable on (Canadian $ in millions) Interest bearing Non-interest after notice a fixed date (4)(5) Total July 31, October 31, July 31, October 31, July 31, October 31, July 31, October 31, July 31, October 31, Deposits by: Banks (1) (6) 3,245 1,996 1,773 1,530 1,240 1,017 35,641 19,273 41,899 23,816 Business and government 45,320 29,083 41,901 33,853 115,048 85,022 195,436 195,199 397,705 343,157 Individuals 4,213 3,361 28,729 23,084 107,521 94,304 80,533 80,421 220,996 201,170 Total (2) (3) 52,778 34,440 72,403 58,467 223,809 180,343 311,610 294,893 660,600 568,143 Booked in: Canada 39,943 27,338 62,427 49,911 107,555 90,630 201,878 181,835 411,803 349,714 United States 11,254 6,043 9,935 8,531 114,926 88,604 77,713 86,368 213,828 189,546 Other countries 1,581 1,059 41 25 1,328 1,109 32,019 26,690 34,969 28,883 Total 52,778 34,440 72,403 58,467 223,809 180,343 311,610 294,893 660,600 568,143 (1) Includes regulated and central banks. (2) Includes structured notes designated at fair value through profit or loss (Note 7). (3) As at July 31, 2020 and October 31, 2019, total deposits payable on a fixed date included $40,757 million and $25,438 million, respectively, of federal funds purchased and commercial paper issued and other deposit liabilities. Included in deposits as at July 31, 2020 and October 31, 2019 are $318,088 million and $279,860 million, respectively, of deposits denominated in U.S. dollars, and $38,861 million and $36,680 million, respectively, of deposits denominated in other foreign currencies. (4) Includes $276,218 million of deposits, each greater than one hundred thousand dollars, of which $173,167 million were booked in Canada, $71,037 million were booked in the United States and $32,014 million were booked in other countries ($258,862 million, $152,499 million, $79,682 million and $26,681 million, respectively, as at October 31, 2019). Of the $173,167 million of deposits booked in Canada, $27,729 million mature in less than three months, $11,351 million mature in three to six months, $41,220 million mature in six to twelve months and $92,867 million mature after twelve months ($152,499 million, $26,234 million, $8,400 million, $31,155 million and $86,710 million, respectively, as at October 31, 2019). Certain comparative figures have been reclassified to conform with the current period’s presentation. (5) Includes $24,990 million of senior unsecured debt as at July 31, 2020 subject to the Bank Recapitalization (Bail-In) Bail-In non-viable. (6) Includes $12,741 million of deposits with the Bank of Canada, where we have used our own bearer deposit notes as collateral under its term repo facility ($nil as at October 31, 2019).

Equity (Tables)

Equity (Tables)	9 Months Ended
	Jul. 31, 2020
Statement [Line Items]
Summary of Classes of Preferred and Common Shares Outstanding	Preferred and Common Shares Outstanding and Other Equity Instruments (1) (Canadian $ in millions, except as noted) July 31, 2020 October 31, 2019 Number of shares Amount Number of shares Amount Convertible into... Preferred Shares - Classified as Equity Class B – Series 25 9,425,607 236 9,425,607 236 Class B -Series 26 (2) Class B – Series 26 2,174,393 54 2,174,393 54 Class B -Series 25 (2) Class B – Series 27 20,000,000 500 20,000,000 500 Class B -Series 28 (2)(3) Class B – Series 29 16,000,000 400 16,000,000 400 Class B -Series 30 (2)(3) Class B – Series 31 12,000,000 300 12,000,000 300 Class B -Series 32 (2)(3) Class B – Series 33 8,000,000 200 8,000,000 200 Class B -Series 34 (2)(3) Class B – Series 35 6,000,000 150 6,000,000 150 Not convertible (3) Class B – Series 36 600,000 600 600,000 600 Class B -Series 37 (2)(3) Class B – Series 38 24,000,000 600 24,000,000 600 Class B -Series 39 (2)(3) Class B – Series 40 20,000,000 500 20,000,000 500 Class B - Series 41 (2)(3) Class B – Series 42 16,000,000 400 16,000,000 400 Class B -Series 43 (2)(3) Class B – Series 44 16,000,000 400 16,000,000 400 Class B -Series 45 (2)(3) Class B – Series 46 14,000,000 350 14,000,000 350 Class B -Series 47 (2)(3) Preferred Shares - Classified as Equity 4,690 4,690 Other Equity Instruments (4) 658 658 Common Shares (5) (6) (7) 642,804,880 13,200 639,232,276 12,971 Share Capital and Other Equity Instruments 18,548 18,319 (1) For additional information refer to Notes 16 and 20 of our annual consolidated financial statements for the year ended October 31, 2019 on pages 177 and 188 of our 2019 Annual Report. (2) If converted, the holders have the option to convert back to the original preferred shares on subsequent redemption dates. (3) The shares issued include a non-viability non-viable non-viability. (4) The other equity instruments non-viability non-viable non-viability. (5) The stock options issued under the Stock Option Plan are convertible into 6,635,228 common shares as at July 31, 2020 (6,108,307 common shares as at October 31, 2019). (6) During the three and nine months ended July 31, 2020, we issued 3,355,394 common shares under the Shareholder Dividend Reinvestment and Share Purchase Plan and 8,614 and 423,737 common shares under the Stock Option Plan. (7) Common shares are net of 206,527 treasury shares (nil as at October 31, 2019).

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Fair Value of Financial Instruments Not Carried at Fair Value on the Balance Sheet	Fair Value of Financial Instruments Not Carried at Fair Value on the Balance Sheet Set out in the following table are the amounts that would be reported if all financial assets and liabilities not currently carried at fair value were reported at their fair values. Refer to Note 17 to our annual consolidated financial statements for the year ended October 31, 2019 on pages 179 to 186 for further discussion on the determination of fair value. (Canadian $ in millions) July 31, 2020 October 31, 2019 Carrying value Fair value Carrying value Fair value Securities Amortized cost 45,229 45,875 24,472 24,622 Loans (1) Residential mortgages 125,341 127,108 123,676 124,093 Consumer instalment and other personal 68,506 69,181 67,200 67,516 Credit cards 7,617 7,617 8,623 8,623 Business and government (2) 240,352 242,295 224,442 225,145 441,816 446,201 423,941 425,377 Deposits (3) 643,133 645,402 552,314 553,444 Securitization and structured entities’ liabilities 27,461 28,159 27,159 27,342 Subordinated debt 8,513 8,790 6,995 7,223 This table excludes financial instruments with a carrying value approximating fair value, such as cash and cash equivalents, interest bearing deposits with banks, securities borrowed or purchased under resale agreements, customers’ liability under acceptances, other assets, acceptances, securities lent or sold under repurchase agreements and other liabilities. (1) Carrying value of loans is net of allowance. (2) Excludes $3,562 million of loans classified as FVTPL and $50 million of loans classified as FVOCI as at July 31, 2020, respectively ($2,156 million and $22 million as at October 31, 2019). (3) Excludes $17,467 million of structured note liabilities designated at FVTPL and accounted for at fair value ($15,829 million as at October 31, 2019).
Summary of Assets and Liabilities categorized by the Fair Value Hierarchy	The extent of our use of actively quoted market prices (Level 1), internal models using observable market information as inputs (Level 2) and models without observable market information as inputs (Level 3) in the valuation of securities, business and government loans classified as FVTPL, fair value liabilities, derivative assets and derivative liabilities is presented in the following tables: (Canadian $ in millions) July 31, 2020 October 31, 2019 Valued using quoted market prices Valued using models (with observable inputs) Valued using models (without observable inputs) Total Valued using quoted market prices Valued using models (with observable inputs) Valued using models (without observable inputs) Total Trading Securities Issued or guaranteed by: Canadian federal government 4,746 3,898 - 8,644 6,959 1,371 - 8,330 Canadian provincial and municipal governments 2,056 6,967 - 9,023 3,871 3,656 - 7,527 U.S. federal government 8,000 1,210 - 9,210 8,001 762 - 8,763 U.S. states, municipalities and agencies 38 370 - 408 48 626 - 674 Other governments 1,406 1,485 - 2,891 888 697 - 1,585 NHA MBS, U.S. agency MBS and CMO 5 9,113 584 9,702 14 10,494 538 11,046 Corporate debt 3,694 6,765 - 10,459 2,620 5,091 7 7,718 Trading loans - 45 - 45 - 103 - 103 Corporate equity 38,825 - - 38,825 40,155 2 - 40,157 58,770 29,853 584 89,207 62,556 22,802 545 85,903 FVTPL Securities Issued or guaranteed by: Canadian federal government 627 108 - 735 410 107 - 517 Canadian provincial and municipal governments 239 1,231 - 1,470 364 915 - 1,279 U.S. federal government 9 35 - 44 - 48 - 48 Other governments - 95 - 95 - 49 - 49 NHA MBS, U.S. agency MBS and CMO - 3 - 3 - 5 - 5 Corporate debt 97 8,140 - 8,237 146 8,071 - 8,217 Corporate equity 1,654 8 1,807 3,469 1,536 69 1,984 3,589 2,626 9,620 1,807 14,053 2,456 9,264 1,984 13,704 FVOCI Securities Issued or guaranteed by: Canadian federal government 21,492 6,090 - 27,582 11,168 776 - 11,944 Canadian provincial and municipal governments 1,944 2,781 - 4,725 3,798 2,214 - 6,012 U.S. federal government 17,046 1,633 - 18,679 15,068 907 - 15,975 U.S. states, municipalities and agencies 6 5,356 1 5,363 1 4,159 1 4,161 Other governments 2,748 4,402 - 7,150 4,396 2,939 - 7,335 NHA MBS, U.S. agency MBS and CMO - 11,538 - 11,538 - 14,000 - 14,000 Corporate debt 590 2,779 - 3,369 2,205 2,802 - 5,007 Corporate equity - - 87 87 - - 81 81 43,826 34,579 88 78,493 36,636 27,797 82 64,515 Business and government loans - 1,409 2,203 3,612 - 442 1,736 2,178 Fair Value Liabilities Securities sold but not yet purchased 25,323 5,256 - 30,579 22,393 3,860 - 26,253 Structured note liabilities and other note liabilities (1) - 17,467 - 17,467 - 15,829 - 15,829 Annuity liabilities (2) - 1,232 - 1,232 - 1,043 - 1,043 25,323 23,955 - 49,278 22,393 20,732 - 43,125 Derivative Assets Interest rate contracts 24 17,333 - 17,357 14 10,443 - 10,457 Foreign exchange contracts 9 15,804 - 15,813 7 9,262 - 9,269 Commodity contracts 457 1,555 - 2,012 329 817 - 1,146 Equity contracts 743 2,860 - 3,603 226 997 - 1,223 Credit default swaps - 11 - 11 - 49 - 49 1,233 37,563 - 38,796 576 21,568 - 22,144 Derivative Liabilities Interest rate contracts 31 12,836 - 12,867 11 7,943 - 7,954 Foreign exchange contracts 12 18,723 - 18,735 20 10,843 - 10,863 Commodity contracts 603 2,247 - 2,850 218 1,462 - 1,680 Equity contracts 478 4,907 - 5,385 103 2,896 - 2,999 Credit default swaps - 19 3 22 - 101 1 102 1,124 38,732 3 39,859 352 23,245 1 23,598 (1) These structured note liabilities and other note liabilities included in deposits have been designated at FVTPL. (2) These investment contract liabilities in our insurance business have been designated at FVTPL.
Significant Unobservable Inputs in Level 3 Instrument Valuations	Quantitative Information about Level 3 Fair Value Measurements The table below presents the fair values of our significant Level 3 financial instruments that are measured at a fair value on a recurring basis, the valuation techniques used to determine their fair values and the value ranges of significant unobservable inputs used in the valuations. We have not applied any other reasonably possible alternative assumption to the significant Level 3 categories of private equity investments, as the net asset values are provided by the investment or fund managers. Range of input values (1) As at July 31, 2020 (Canadian $ in millions, except as noted) Reporting line in fair value hierarchy table Fair value of assets Valuation techniques Significant unobservable inputs Low High Private equity (2) Corporate equity 1,807 Net Asset Value Net Asset Value na na EV/EBITDA Multiple 5x 16x Loans (3) Business and government loans 2,203 Discounted cash flows Discount margin 56bps 224bps NHA MBS and U.S. agency MBS and CMO NHA MBS and U.S. agency MBS and CMO 584 Discounted cash flows Prepayment rate 7% 86% Market Comparable Comparability Adjustment (4) (5.26 ) 5.54 (1) The low and high input values represent the highest and lowest actual level of inputs used to value a group of financial instruments in a particular product category. These input ranges do not reflect the level of input uncertainty, but are affected by the specific underlying instruments within each product category. The input ranges will therefore vary from period to period based on the characteristics of the underlying instruments held at each balance sheet date. (2) Included in private equity is $490 million of Federal Reserve Bank and U.S. Federal Home Loan Bank shares that we carry at cost, which approximates fair value, and hold to meet regulatory requirements. (3) The impact of assuming a 10 basis point increase or decrease in discount margin for business and government loans is $2 million. (4) Range of input values represents price per security adjustment. na – not applicable
Summary of Transfers Between Level 1 and Level 2	The following table presents significant transfers between Level 1 and Level 2 for the three and nine months ended July 31, 2020 and July 31, 2019. (Canadian $ in millions) For the three months ended July 31, 2020 July 31, 2019 Level 1 to Level 2 Level 2 to Level 1 Level 1 to Level 2 Level 2 to Level 1 Trading Securities 994 2,682 1,734 901 FVTPL Securities 19 241 218 38 FVOCI Securities 1,768 4,294 1,834 2,335 Securities sold but not yet purchased 681 2,067 6,362 98 (Canadian $ in millions) For the nine months ended July 31, 2020 July 31, 2019 Level 1 to Level 2 Level 2 to Level 1 Level 1 to Level 2 Level 2 to Level 1 Trading Securities 5,761 3,952 5,392 4,260 FVTPL Securities 518 302 682 390 FVOCI Securities 9,032 7,012 9,723 3,910 Securities sold but not yet purchased 4,432 2,982 9,905 2,501
Summary of Changes in Level 3 Instruments Carried At Fair Value	The table below presents a reconciliation of all changes in Level 3 financial instruments during the three and nine months ended July 31, 2020, including realized and unrealized gains (losses) included in earnings and other comprehensive income as well as transfers into and out of Level 3. Transfers from Level 2 into Level 3 were due to an increase in unobservable market inputs used in pricing the securities. Transfers out of Level 3 into Level 2 were due to an increase in observable market inputs used in pricing the securities. Change in fair value (Canadian $ in millions) For the three months ended July 31, 2020 Balance Included in Included in other comprehensive income (1) Issuances/ Sales (2) Maturities/ Transfers Transfers Fair Value Change in for instruments Trading Securities NHA MBS and U.S. agency MBS and CMO 487 (115 ) (18 ) 362 (151 ) - 41 (22 ) 584 (74 ) Corporate debt 48 10 (2 ) - (56 ) - - - - - Total trading securities 535 (105 ) (20 ) 362 (207 ) - 41 (22 ) 584 (74 ) FVTPL Securities Corporate equity 2,062 (23 ) (57 ) 58 (233 ) - - - 1,807 2 Total FVTPL securities 2,062 (23 ) (57 ) 58 (233 ) - - - 1,807 2 FVOCI Securities Issued or guaranteed by: U.S. states, municipalities and agencies 1 - - - - - - - 1 na Corporate equity 83 - - 4 - - - - 87 na Total FVOCI securities 84 - - 4 - - - - 88 na Business and government loans 2,028 - 95 765 - (685 ) - - 2,203 - Fair Value Liabilities Securities sold but not yet purchased - - - - - - - - - - Total fair value liabilities - - - - - - - - - - Derivative Liabilities Equity contracts - - - - - - - - - - Credit default swaps 4 - - - - - - (1 ) 3 - Total derivative liabilities 4 - - - - - - (1 ) 3 - (1) Foreign exchange translation on trading securities held by foreign subsidiaries is included in other comprehensive income, net foreign operations. (2) Includes proceeds recovered on securities sold but not yet purchased. (3) Changes in unrealized gains (losses) on Trading and FVTPL securities still held on July 31, 2020 are included in earnings for the period. Unrealized gains (losses) recognized on Level 3 financial instruments may be offset by related (losses) gains on hedge contracts. na – Not applicable Change in fair value (Canadian $ in millions) For the nine months ended July 31, 2020 Balance Included in Included in other comprehensive Issuances/ Sales (2) Maturities/ Transfers Transfers Fair Value Change in in income for instruments Trading Securities NHA MBS and U.S. agency MBS and CMO 538 (245 ) 12 811 (540 ) - 202 (194 ) 584 (158 ) Corporate debt 7 10 (2 ) 50 (68 ) - 3 - - (1 ) Total trading securities 545 (235 ) 10 861 (608 ) - 205 (194 ) 584 (159 ) FVTPL Securities Corporate equity 1,984 (27 ) 23 244 (418 ) - 1 - 1,807 7 Total FVTPL 1,984 (27 ) 23 244 (418 ) - 1 - 1,807 7 FVOCI Securities Issued or guaranteed by: U.S. states, municipalities and agencies 1 - - - - - - - 1 na Corporate equity 81 - - 6 - - - - 87 na Total FVOCI securities 82 - - 6 - - - - 88 na Business and government loans 1,736 (3 ) 183 1,705 - (1,418 ) - - 2,203 – Fair Value Liabilities Securities sold but not yet purchased - - - - - - - - - – Total fair value liabilities - - - - - - - - - – Derivative Liabilities Equity contracts - - - - - - - - - – Credit default swaps 1 - - - - - 3 (1 ) 3 – Total derivative liabilities 1 - - - - - 3 (1 ) 3 – (1) Foreign exchange translation on trading securities held by foreign subsidiaries is included in other comprehensive income, net foreign operations. (2) Includes proceeds recovered on securities sold but not yet purchased. (3) Changes in unrealized gains (losses) on Trading and FVTPL securities still held on July 31, 2020 are included in earnings for the period. Unrealized gains (losses) recognized on Level 3 financial instruments may be offset by related (losses) gains on hedge contracts. na – Not applicable The table below presents a reconciliation of all changes in Level 3 financial instruments during the three and nine months ended July 31, 2019, including realized and unrealized gains (losses) included in earnings and other comprehensive income. Change in fair value (Canadian $ in millions) For the three months ended July 31, 2019 Balance Included in Included in other income (1) Issuances/ Sales (2) Maturities/ Transfers Transfers Fair Value Change in unrealized gains (losses) recorded in income for instruments Trading Securities NHA MBS and U.S. agency MBS and CMO 215 (15 ) (3 ) 97 (96 ) - 53 (5 ) 246 (6 ) Corporate debt 7 - - 26 (6 ) - - (1 ) 26 - Total trading securities 222 (15 ) (3 ) 123 (102 ) - 53 (6 ) 272 (6 ) FVTPL Securities Corporate equity 1,907 10 (21 ) 77 (66 ) (1 ) - - 1,906 16 Total FVTPL 1,907 10 (21 ) 77 (66 ) (1 ) - - 1,906 16 FVOCI Securities Issued or guaranteed by: U.S. states, municipalities and agencies 1 - - - - - - - 1 na Corporate equity 69 - - 10 - - - - 79 na Total FVOCI securities 70 - - 10 - - - - 80 na Business and government loans 2,172 - (31 ) 155 - (132 ) - - 2,164 - Fair Value Liabilities Securities sold but not yet purchased - - - - 172 - - - 172 - Total fair value liabilities - - - - 172 - - - 172 - Derivative Liabilities Equity contracts - - - - - - - - - - Credit default swaps - - - - - - 1 - 1 - Total derivative liabilities - - - - - - 1 - 1 - (1) Foreign exchange translation on trading securities held by foreign subsidiaries is included in other comprehensive income, net foreign operations. (2) Includes proceeds recovered on securities sold but not yet purchased. (3) Changes in unrealized gains (losses) on Trading and FVTPL securities still held on July 31, 2019 are included in earnings for the period. Unrealized gains (losses) recognized on Level 3 financial instruments may be offset by related (losses) gains on hedge contracts. na – Not applicable Change in fair value (Canadian $ in millions) For the nine months ended July 31, 2019 Balance Included in Included in other comprehensive Issuances/ Sales (2) Maturities/ Transfers Transfers Fair Value Change in unrealized gains (losses) recorded for instruments still held (3) Trading Securities NHA MBS and U.S. agency MBS and CMO 255 (22 ) 1 280 (326 ) - 98 (40 ) 246 (13 ) Corporate debt 7 - - 32 (12 ) - - (1 ) 26 - Total trading securities 262 (22 ) 1 312 (338 ) - 98 (41 ) 272 (13 ) FVTPL Securities Corporate equity 1,825 20 2 324 (264 ) (1 ) - - 1,906 36 Total FVTPL 1,825 20 2 324 (264 ) (1 ) - - 1,906 36 FVOCI Securities Issued or guaranteed by: U.S. states, municipalities and agencies 1 - - - - - - - 1 na Corporate equity 62 - - 17 - - - - 79 na Total FVOCI securities 63 - - 17 - - - - 80 na Business and government loans 1,450 7 13 1,369 - (675 ) - - 2,164 - Fair Value Liabilities Securities sold but not yet purchased - - - (7 ) 179 - - - 172 - Total fair value liabilities - - - (7 ) 179 - - - 172 - Derivative Liabilities Equity contracts 1 - - - - - - (1 ) - - Credit default swaps 1 - - - - - 1 (1 ) 1 - Total derivative liabilities 2 - - - - - 1 (2 ) 1 - (1) Foreign exchange translation on trading securities held by foreign subsidiaries is included in other comprehensive income, net foreign operations. (2) Includes proceeds recovered on securities sold but not yet purchased. (3) Changes in unrealized gains (losses) on Trading and FVTPL securities still held on July 31, 2019 are included in earnings for the period. Unrealized gains (losses) recognized on Level 3 financial instruments may be offset by related (losses) gains on hedge contracts. na – Not applicable

Employee Compensation (Tables)

Employee Compensation (Tables)	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Summary of Ranges of Values used for each Option Pricing Assumption	To determine the fair value of the stock option tranches (i.e. the portion that vests each year) on the grant date, the following ranges of values were used for each option pricing assumption: For stock options granted during the nine months ended July 31, 2020 July 31, 2019 Expected dividend yield 4.3% 5.7% Expected share price volatility 15.4% 20.0% - 20.1% Risk-free rate of return 1.9% - 2.0% 2.5% Expected period until exercise (in years) 6.5 - 7.0 6.5 - 7.0 Exercise price ($) 101.47 89.90
Summary of Pension and Other Employee Future Benefit Expenses	Pension and Other Employee Future Benefit Expenses Pension and other employee future benefit expenses are determined as follows: (Canadian $ in millions) Pension benefit plans Other employee future benefit plans For the three months ended July 31, 2020 July 31, 2019 July 31, 2020 July 31, 2019 Current service cost 62 48 2 2 Net interest (income) expense on net defined benefit (asset) liability 1 (5 ) 8 10 Administrative expenses 1 1 - - Benefits expense 64 44 10 12 Canada and Quebec pension plan expense 22 23 - - Defined contribution expense 37 37 - - Total pension and other employee future benefit expenses 123 104 10 12 (Canadian $ in millions) Pension benefit plans Other employee future benefit plans For the nine months ended July 31, 2020 July 31, 2019 July 31, 2020 July 31, 2019 Current service cost 187 144 8 7 Net interest (income) expense on net defined benefit (asset) liability 1 (14 ) 24 29 Past service income - (5 ) - - Administrative expenses 3 3 - - Benefits expense 191 128 32 36 Canada and Quebec pension plan expense 75 70 - - Defined contribution expense 135 127 - - Total pension and other employee future benefit expenses 401 325 32 36

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Summary of Basic and Diluted Earnings Per Share	The following tables present our basic and diluted earnings per share: Basic Earnings Per Common Share (Canadian $ in millions, except as noted) For the three months ended For the nine months ended July 31, 2020 July 31, 2019 July 31, 2020 July 31, 2019 Net income attributable to equity holders of the bank 1,232 1,557 3,513 4,564 Dividends on preferred shares and distributions payable on other equity instruments (73 ) (59 ) (195 ) (159) Net income available to common shareholders 1,159 1,498 3,318 4,405 Weighted-average number of common shares outstanding (in thousands) 641,300 638,900 640,129 638,803 Basic earnings per share (Canadian $) 1.81 2.34 5.18 6.90 Diluted Earnings Per Common Share Net income available to common shareholders adjusted for impact of dilutive instruments 1,159 1,498 3,318 4,405 Weighted-average number of common shares outstanding (in thousands) 641,300 638,900 640,129 638,803 Effect of dilutive instruments Stock options potentially exercisable (1) 2,400 5,734 3,473 5,697 Common shares potentially repurchased (2,046 ) (4,184 ) (2,721 ) (4,137) Weighted-average number of diluted common shares outstanding (in thousands) 641,654 640,450 640,881 640,363 Diluted earnings per share (Canadian $) 1.81 2.34 5.18 6.88 (1) In computing diluted earnings per share we excluded average stock options outstanding of 4,238,334 and 3,124,912 with a weighted-average exercise price of $94.30 and $99.72, respectively, for the three and nine months ended July 31, 2020 (687,059 and 908,194 with a weighted-average exercise price of $104.14 and $102.98, respectively, for the three and nine months ended July 31, 2019) as the average share price for the period did not exceed the exercise price.

Operating Segmentation (Tables)

Operating Segmentation (Tables)	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Schedule of Operating Segments	Our results and average assets, grouped by operating segment, are as follows: (Canadian $ in millions) For the three months ended July 31, 2020 Canadian U.S. P&C BMO Wealth BMO CM Corporate Total Net interest income (2) 1,509 1,107 229 952 (262 ) 3,535 Non-interest 453 292 2,255 576 78 3,654 Total Revenue 1,962 1,399 2,484 1,528 (184 ) 7,189 Provision for credit losses on impaired loans 257 109 1 79 - 446 Provision for credit losses on performing loans 313 223 7 58 7 608 Total Provision for credit losses 570 332 8 137 7 1,054 Insurance claims, commissions and changes in policy benefit liabilities - - 1,189 - - 1,189 Depreciation and amortization 117 131 93 59 - 400 Other non-interest 843 621 744 766 70 3,044 Income (loss) before taxes 432 315 450 566 (261 ) 1,502 Provision for (recovery of) income taxes 112 52 109 140 (143 ) 270 Reported net income (loss) 320 263 341 426 (118 ) 1,232 Average Assets 252,028 140,615 46,308 379,131 159,682 977,764 For the three months ended July 31, 2019 Canadian U.S. P&C BMO Wealth BMO CM Corporate Total Net interest income (2) 1,500 1,066 237 537 (123 ) 3,217 Non-interest 543 298 1,876 670 62 3,449 Total Revenue 2,043 1,364 2,113 1,207 (61 ) 6,666 Provision for credit losses on impaired loans 174 61 - 7 1 243 Provision for (recovery of) credit losses on performing loans 30 37 (2 ) 3 (5 ) 63 Provision for (recovery of) credit losses 204 98 (2 ) 10 (4 ) 306 Insurance claims, commissions and changes in policy benefit liabilities - - 887 - - 887 Depreciation and amortization 87 111 68 35 - 301 Other non-interest 874 693 817 764 42 3,190 Income (loss) before taxes 878 462 343 398 (99 ) 1,982 Provision for (recovery of) income taxes 228 94 93 84 (74 ) 425 Reported net income (loss) 650 368 250 314 (25 ) 1,557 Average Assets 239,948 129,098 41,891 343,292 82,734 836,963 (Canadian $ in millions) For the nine months ended July 31, 2020 Canadian U.S. P&C BMO Wealth BMO CM Corporate Total Net interest income 4,561 3,287 672 2,503 (582 ) 10,441 Non-interest 1,443 912 4,727 1,445 232 8,759 Total Revenue 6,004 4,199 5,399 3,948 (350 ) 19,200 Provision for credit losses on impaired loans 607 365 4 205 2 1,183 Provision for credit losses on performing loans 612 315 13 390 8 1,338 Total Provision for credit losses 1,219 680 17 595 10 2,521 Insurance claims, commissions and changes in policy benefit liabilities - - 1,708 - - 1,708 Depreciation and amortization 373 417 250 171 - 1,211 Non-interest 2,549 1,913 2,387 2,264 305 9,418 Income (loss) before taxes 1,863 1,189 1,037 918 (665 ) 4,342 Provision for (recovery of ) 482 236 261 210 (360 ) 829 Reported net income (loss) 1,381 953 776 708 (305 ) 3,513 Average Assets 251,325 139,196 45,234 370,363 129,399 935,517 For the nine months ended July 31, 2019 Canadian U.S. P&C BMO Wealth BMO CM Corporate Total Net interest income 4,342 3,160 699 1,695 (372 ) 9,524 Non-interest 1,564 858 5,396 1,885 169 9,872 Total Revenue 5,906 4,018 6,095 3,580 (203 ) 19,396 Provision for (recovery of) credit losses on impaired loans 410 94 1 20 (5 ) 520 Provision for (recovery of) credit losses on performing loans 52 33 (1 ) 20 (5 ) 99 Provision for (recovery of) credit losses 462 127 - 40 (10 ) 619 Insurance claims, commissions and changes in policy benefit liabilities - - 2,374 - - 2,374 Depreciation and amortization 250 338 200 107 - 895 Non-interest 2,610 2,008 2,463 2,380 287 9,748 Income (loss) before taxes 2,584 1,545 1,058 1,053 (480 ) 5,760 Provision for (recovery of) income taxes 670 327 265 233 (299 ) 1,196 Reported net income (loss) 1,914 1,218 793 820 (181 ) 4,564 Average Assets 235,562 124,590 40,345 342,829 82,778 826,104 (1) Corporate Services includes Technology and Operations. (2) Operating groups report on a taxable equivalent basis (“teb”). Revenue and the provision for income taxes are increased on tax-exempt before-tax tax-exempt Certain comparative figures have been reclassified to conform with the current period’s presentation.

Acquisition (Tables)

Acquisition (Tables)	9 Months Ended
	Jul. 31, 2020
Text Block [Abstract]
Summary of Fair Value of Assets Acquired and Liabilities Assumed at The Date of Acquisition	The fair values of the assets acquired and liabilities assumed at the date of acquisition are as follows: (Canadian $ in millions) Clearpool Goodwill and intangible assets 223 Other assets 44 Total assets 267 Liabilities 60 Purchase price 207 The purchase price allocation for Clearpool is subject to refinement as we complete the valuation of the assets acquired and liabilities assumed.

Basis of Presentation - Reconci

Basis of Presentation - Reconcilation of lease commitements (Detail) $ in Millions	Nov. 01, 2019CAD ($)
Disclosure of reconcilation of lease commitements [Line Items]
Operating lease commitment at October 31, 2019 as disclosed in our consolidated financial statements	$ 3,800
Discounted using the incremental borrowing rate at November 1, 2019	(310)
Finance lease liabilities recognized as at October 31, 2019	41
Recognition exemption for low-value asset leases	(13)
Extension and termination options reasonably certain to be exercised	37
Executory costs not included in the lease liability	(166)
Leases signed but not yet started	(1,222)
Lease liabilities recognized at November 1, 2019	$ 2,167

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail) - CAD ($) $ in Millions	Nov. 01, 2019	Jul. 31, 2020
Retained earnings [member]
Basis of presentation [line items]
Decrease in equity after tax		$ (59)
USD LIBOR [Member]
Basis of presentation [line items]
Notional amount on derivatives	$ 85,727
Other Potentially Impacted IBORs [Member]
Basis of presentation [line items]
Notional amount on derivatives	$ 1,560
Increase (decrease) due to changes in accounting policy [member] | IFRS 16 [Member]
Basis of presentation [line items]
Weighted average borrowing rate	2.52%
Increase (decrease) due to changes in accounting policy [member] | IFRS 16 [Member] | Retained earnings [member]
Basis of presentation [line items]
Decrease in equity before tax	$ (80)
Decrease in equity after tax	(59)
Increase (decrease) due to changes in accounting policy [member] | IFRS 16 [Member] | Premises And Equipment [Member]
Basis of presentation [line items]
Increase in assets	1,965
Increase (decrease) due to changes in accounting policy [member] | IFRS 16 [Member] | Other Liabilities [Member]
Basis of presentation [line items]
Increase in liabilities	$ 2,024

Securities - Additional Informa

Securities - Additional Information (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019
Disclosure of financial assets [line items]
Fair value through profit or loss ("FVTPL") securities	$ 14,053	$ 13,572	$ 13,704
Amortized cost	45,229	41,592	24,472
FVOCI Securities	78,493	$ 74,476	64,515
Mandatorily measured at fair value [member]
Disclosure of financial assets [line items]
Fair value through profit or loss ("FVTPL") securities	2,361		2,899
Designated at fair value [member]
Disclosure of financial assets [line items]
Fair value through profit or loss ("FVTPL") securities	11,692		10,805
Allowance for credit losses on securities [member]
Disclosure of financial assets [line items]
Amortized cost	1		1
FVOCI Securities	$ 4		$ 2

Securities - Schedule of Unreal

Securities - Schedule of Unrealized Gains and Losses (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019
Disclosure of financial assets [line items]
FVOCI Securities	$ 78,493	$ 74,476	$ 64,515
Cost/Amortized cost [member]
Disclosure of financial assets [line items]
FVOCI Securities	76,188		63,313
Gross Unrealized Gains [Member]
Disclosure of financial assets [line items]
FVOCI Securities	2,324		1,263
Gross Unrealized Losses [Member]
Disclosure of financial assets [line items]
FVOCI Securities	19		61
Fair value [member]
Disclosure of financial assets [line items]
FVOCI Securities	78,493		64,515
Canadian federal government [member] | Cost/Amortized cost [member]
Disclosure of financial assets [line items]
FVOCI Securities	27,329		11,876
Canadian federal government [member] | Gross Unrealized Gains [Member]
Disclosure of financial assets [line items]
FVOCI Securities	253		72
Canadian federal government [member] | Gross Unrealized Losses [Member]
Disclosure of financial assets [line items]
FVOCI Securities			4
Canadian federal government [member] | Fair value [member]
Disclosure of financial assets [line items]
FVOCI Securities	27,582		11,944
Canadian Provincial And Municipal Governments [member] | Cost/Amortized cost [member]
Disclosure of financial assets [line items]
FVOCI Securities	4,585		5,907
Canadian Provincial And Municipal Governments [member] | Gross Unrealized Gains [Member]
Disclosure of financial assets [line items]
FVOCI Securities	140		106
Canadian Provincial And Municipal Governments [member] | Gross Unrealized Losses [Member]
Disclosure of financial assets [line items]
FVOCI Securities			1
Canadian Provincial And Municipal Governments [member] | Fair value [member]
Disclosure of financial assets [line items]
FVOCI Securities	4,725		6,012
US federal Government [member] | Cost/Amortized cost [member]
Disclosure of financial assets [line items]
FVOCI Securities	17,646		15,363
US federal Government [member] | Gross Unrealized Gains [Member]
Disclosure of financial assets [line items]
FVOCI Securities	1,039		617
US federal Government [member] | Gross Unrealized Losses [Member]
Disclosure of financial assets [line items]
FVOCI Securities	6		5
US federal Government [member] | Fair value [member]
Disclosure of financial assets [line items]
FVOCI Securities	18,679		15,975
US State Municipal And Agencies Debt [member] | Cost/Amortized cost [member]
Disclosure of financial assets [line items]
FVOCI Securities	5,196		4,091
US State Municipal And Agencies Debt [member] | Gross Unrealized Gains [Member]
Disclosure of financial assets [line items]
FVOCI Securities	169		74
US State Municipal And Agencies Debt [member] | Gross Unrealized Losses [Member]
Disclosure of financial assets [line items]
FVOCI Securities	2		4
US State Municipal And Agencies Debt [member] | Fair value [member]
Disclosure of financial assets [line items]
FVOCI Securities	5,363		4,161
Other governments [member] | Cost/Amortized cost [member]
Disclosure of financial assets [line items]
FVOCI Securities	6,949		7,179
Other governments [member] | Gross Unrealized Gains [Member]
Disclosure of financial assets [line items]
FVOCI Securities	205		158
Other governments [member] | Gross Unrealized Losses [Member]
Disclosure of financial assets [line items]
FVOCI Securities	4		2
Other governments [member] | Fair value [member]
Disclosure of financial assets [line items]
FVOCI Securities	7,150		7,335
National Housing Act ("NHA") mortgage-backed securities ("MBS") [member] | Cost/Amortized cost [member]
Disclosure of financial assets [line items]
FVOCI Securities	1,614		1,953
National Housing Act ("NHA") mortgage-backed securities ("MBS") [member] | Gross Unrealized Gains [Member]
Disclosure of financial assets [line items]
FVOCI Securities	51		18
National Housing Act ("NHA") mortgage-backed securities ("MBS") [member] | Gross Unrealized Losses [Member]
Disclosure of financial assets [line items]
FVOCI Securities	2		1
National Housing Act ("NHA") mortgage-backed securities ("MBS") [member] | Fair value [member]
Disclosure of financial assets [line items]
FVOCI Securities	1,663		1,970
U.S. agency MBS and collateralized mortgage obligations ("CMO") [member] | Cost/Amortized cost [member]
Disclosure of financial assets [line items]
FVOCI Securities	9,543		11,966
U.S. agency MBS and collateralized mortgage obligations ("CMO") [member] | Gross Unrealized Gains [Member]
Disclosure of financial assets [line items]
FVOCI Securities	336		106
U.S. agency MBS and collateralized mortgage obligations ("CMO") [member] | Gross Unrealized Losses [Member]
Disclosure of financial assets [line items]
FVOCI Securities	4		42
U.S. agency MBS and collateralized mortgage obligations ("CMO") [member] | Fair value [member]
Disclosure of financial assets [line items]
FVOCI Securities	9,875		12,030
Corporate debt [member] | Cost/Amortized cost [member]
Disclosure of financial assets [line items]
FVOCI Securities	3,241		4,899
Corporate debt [member] | Gross Unrealized Gains [Member]
Disclosure of financial assets [line items]
FVOCI Securities	129		110
Corporate debt [member] | Gross Unrealized Losses [Member]
Disclosure of financial assets [line items]
FVOCI Securities	1		2
Corporate debt [member] | Fair value [member]
Disclosure of financial assets [line items]
FVOCI Securities	3,369		5,007
Corporate equity [member] | Cost/Amortized cost [member]
Disclosure of financial assets [line items]
FVOCI Securities	85		79
Corporate equity [member] | Gross Unrealized Gains [Member]
Disclosure of financial assets [line items]
FVOCI Securities	2		2
Corporate equity [member] | Fair value [member]
Disclosure of financial assets [line items]
FVOCI Securities	$ 87		$ 81

Securities - Summary of Interes

Securities - Summary of Interest Income Calculated Using Effective Interest Method (Detail) - CAD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Disclosure Of Interest Income [Line Items]
Total	$ 329	$ 478	$ 1,278	$ 1,365
Financial assets at fair value through other comprehensive income, category [member] | Debt securities [member]
Disclosure Of Interest Income [Line Items]
Total	185	403	823	1,202
Amortized cost [member]
Disclosure Of Interest Income [Line Items]
Total	$ 144	$ 75	$ 455	$ 163

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses - Additional Information (Detail) - CAD ($) $ in Millions	9 Months Ended
	Jul. 31, 2020	Oct. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Allowances for credit losses	$ 3,707	$ 2,094
Allowance for credit losses related to loans [member]
Disclosure of detailed information about financial instruments [line items]
Allowances for credit losses	3,251	1,850
Allowance for credit losses related to other credit instruments [member]
Disclosure of detailed information about financial instruments [line items]
Allowances for credit losses	456	244
Related to performing loans, assuming 100% base case scenario [member]
Disclosure of detailed information about financial instruments [line items]
Allowances for credit losses	2,976	1,609
Modelled allowance account for credit losses of financial assets based on assumptions	2,725	1,325
Related to performing loans, assuming 100% adverse scenario [member]
Disclosure of detailed information about financial instruments [line items]
Allowances for credit losses	2,976	1,609
Modelled allowance account for credit losses of financial assets based on assumptions	3,550	2,800
Performing loans, stage one scenario [member]
Disclosure of detailed information about financial instruments [line items]
Allowances for credit losses	2,976	1,609
Modelled allowance account for credit losses of financial assets based on assumptions	$ 2,300	$ 1,050
Expected credit loss period	12 months

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Summary of Credit Risk Exposures for Loans Carried at Amortized Cost or FVTPL (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Oct. 31, 2019
Disclosure of credit risk exposure [line items]
Allowance for credit losses	$ 3,707	$ 2,094
Residential mortgages [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	125,341	123,676
Residential mortgages [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	140	64
Residential mortgages [member] | Gross carrying amount [member] | Default and impaired [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	430	414
Residential mortgages [member] | Gross carrying amount [member] | Exceptionally low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1
Residential mortgages [member] | Gross carrying amount [member] | Very low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	79,750	79,253
Residential mortgages [member] | Gross carrying amount [member] | Low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	25,419	23,674
Residential mortgages [member] | Gross carrying amount [member] | Medium probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	18,154	18,229
Residential mortgages [member] | Gross carrying amount [member] | High probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	453	521
Residential mortgages [member] | Gross carrying amount [member] | Not Rated [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,274	1,649
Consumer installment and other personal loans [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	68,506	67,200
Consumer installment and other personal loans [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	662	536
Consumer installment and other personal loans [member] | Gross carrying amount [member] | Default and impaired [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	433	468
Consumer installment and other personal loans [member] | Gross carrying amount [member] | Exceptionally low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,617	21,048
Consumer installment and other personal loans [member] | Gross carrying amount [member] | Very low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	25,870	16,685
Consumer installment and other personal loans [member] | Gross carrying amount [member] | Low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	21,154	10,240
Consumer installment and other personal loans [member] | Gross carrying amount [member] | Medium probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	14,777	14,774
Consumer installment and other personal loans [member] | Gross carrying amount [member] | High probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,860	1,820
Consumer installment and other personal loans [member] | Gross carrying amount [member] | Not Rated [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	3,457	2,701
Credit Card Loans [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	7,617	8,623
Credit Card Loans [Member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	330	236
Credit Card Loans [Member] | Gross carrying amount [member] | Exceptionally low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	2,155	2,418
Credit Card Loans [Member] | Gross carrying amount [member] | Very low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,092	1,230
Credit Card Loans [Member] | Gross carrying amount [member] | Low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,068	1,128
Credit Card Loans [Member] | Gross carrying amount [member] | Medium probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	2,665	2,896
Credit Card Loans [Member] | Gross carrying amount [member] | High probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	437	580
Credit Card Loans [Member] | Gross carrying amount [member] | Not Rated [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	530	607
Business and government loans [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	261,896	250,188
Business and government loans [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	2,119	1,014
Business and government loans [member] | Gross carrying amount [member] | Default and impaired [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	3,550	1,747
Business and government loans [member] | Gross carrying amount [member] | Investment grade [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	131,485	135,615
Business and government loans [member] | Gross carrying amount [member] | Sub investment grade [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	120,898	108,284
Business and government loans [member] | Gross carrying amount [member] | Watch list [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	8,082	5,556
Loan commitments and financial guarantee contracts issued [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	456	244
Commitments and financial guarantee contracts	198,835	189,630
Loan commitments and financial guarantee contracts issued [member] | Gross carrying amount [member] | Default and impaired [member]
Disclosure of credit risk exposure [line items]
Commitments and financial guarantee contracts	1,164	324
Loan commitments and financial guarantee contracts issued [member] | Gross carrying amount [member] | Investment grade [member]
Disclosure of credit risk exposure [line items]
Commitments and financial guarantee contracts	134,329	135,804
Loan commitments and financial guarantee contracts issued [member] | Gross carrying amount [member] | Sub investment grade [member]
Disclosure of credit risk exposure [line items]
Commitments and financial guarantee contracts	60,379	51,613
Loan commitments and financial guarantee contracts issued [member] | Gross carrying amount [member] | Watch list [member]
Disclosure of credit risk exposure [line items]
Commitments and financial guarantee contracts	3,419	2,133
Stage One [member] | Residential mortgages [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	114,829	115,155
Stage One [member] | Residential mortgages [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	65	15
Stage One [member] | Residential mortgages [member] | Gross carrying amount [member] | Exceptionally low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1
Stage One [member] | Residential mortgages [member] | Gross carrying amount [member] | Very low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	79,472	79,011
Stage One [member] | Residential mortgages [member] | Gross carrying amount [member] | Low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	22,654	20,853
Stage One [member] | Residential mortgages [member] | Gross carrying amount [member] | Medium probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	11,594	13,651
Stage One [member] | Residential mortgages [member] | Gross carrying amount [member] | High probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	91	124
Stage One [member] | Residential mortgages [member] | Gross carrying amount [member] | Not Rated [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,082	1,531
Stage One [member] | Consumer installment and other personal loans [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	61,214	60,827
Stage One [member] | Consumer installment and other personal loans [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	115	82
Stage One [member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Exceptionally low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,584	21,023
Stage One [member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Very low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	25,827	16,491
Stage One [member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	20,281	9,894
Stage One [member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Medium probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	9,921	10,510
Stage One [member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | High probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	367	397
Stage One [member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Not Rated [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	3,349	2,594
Stage One [member] | Credit Card Loans [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	6,354	7,325
Stage One [member] | Credit Card Loans [Member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	60	43
Stage One [member] | Credit Card Loans [Member] | Gross carrying amount [member] | Exceptionally low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	2,155	2,418
Stage One [member] | Credit Card Loans [Member] | Gross carrying amount [member] | Very low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,076	1,214
Stage One [member] | Credit Card Loans [Member] | Gross carrying amount [member] | Low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	904	970
Stage One [member] | Credit Card Loans [Member] | Gross carrying amount [member] | Medium probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,700	2,020
Stage One [member] | Credit Card Loans [Member] | Gross carrying amount [member] | High probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	49	140
Stage One [member] | Credit Card Loans [Member] | Gross carrying amount [member] | Not Rated [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	530	606
Stage One [member] | Business and government loans [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	217,356	231,055
Stage One [member] | Business and government loans [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	573	263
Stage One [member] | Business and government loans [member] | Gross carrying amount [member] | Investment grade [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	124,728	134,587
Stage One [member] | Business and government loans [member] | Gross carrying amount [member] | Sub investment grade [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	93,201	96,731
Stage One [member] | Loan commitments and financial guarantee contracts issued [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	212	119
Commitments and financial guarantee contracts	175,391	179,979
Stage One [member] | Loan commitments and financial guarantee contracts issued [member] | Gross carrying amount [member] | Investment grade [member]
Disclosure of credit risk exposure [line items]
Commitments and financial guarantee contracts	132,838	134,920
Stage One [member] | Loan commitments and financial guarantee contracts issued [member] | Gross carrying amount [member] | Sub investment grade [member]
Disclosure of credit risk exposure [line items]
Commitments and financial guarantee contracts	42,765	45,178
Stage Two [Member] | Residential mortgages [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	10,099	8,124
Stage Two [Member] | Residential mortgages [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	58	32
Stage Two [Member] | Residential mortgages [member] | Gross carrying amount [member] | Very low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	278	242
Stage Two [Member] | Residential mortgages [member] | Gross carrying amount [member] | Low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	2,765	2,821
Stage Two [Member] | Residential mortgages [member] | Gross carrying amount [member] | Medium probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	6,560	4,578
Stage Two [Member] | Residential mortgages [member] | Gross carrying amount [member] | High probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	362	397
Stage Two [Member] | Residential mortgages [member] | Gross carrying amount [member] | Not Rated [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	192	118
Stage Two [Member] | Consumer installment and other personal loans [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	6,986	6,041
Stage Two [Member] | Consumer installment and other personal loans [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	420	318
Stage Two [Member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Exceptionally low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	33	25
Stage Two [Member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Very low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	43	194
Stage Two [Member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	873	346
Stage Two [Member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Medium probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	4,856	4,264
Stage Two [Member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | High probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,493	1,423
Stage Two [Member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Not Rated [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	108	107
Stage Two [Member] | Credit Card Loans [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	1,263	1,298
Stage Two [Member] | Credit Card Loans [Member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	270	193
Stage Two [Member] | Credit Card Loans [Member] | Gross carrying amount [member] | Very low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	16	16
Stage Two [Member] | Credit Card Loans [Member] | Gross carrying amount [member] | Low probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	164	158
Stage Two [Member] | Credit Card Loans [Member] | Gross carrying amount [member] | Medium probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	965	876
Stage Two [Member] | Credit Card Loans [Member] | Gross carrying amount [member] | High probability of default [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	388	440
Stage Two [Member] | Credit Card Loans [Member] | Gross carrying amount [member] | Not Rated [Member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans		1
Stage Two [Member] | Business and government loans [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	41,565	17,696
Stage Two [Member] | Business and government loans [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	971	441
Stage Two [Member] | Business and government loans [member] | Gross carrying amount [member] | Investment grade [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	6,757	1,028
Stage Two [Member] | Business and government loans [member] | Gross carrying amount [member] | Sub investment grade [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	27,697	11,553
Stage Two [Member] | Business and government loans [member] | Gross carrying amount [member] | Watch list [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	8,082	5,556
Stage Two [Member] | Loan commitments and financial guarantee contracts issued [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	232	103
Commitments and financial guarantee contracts	22,292	9,349
Stage Two [Member] | Loan commitments and financial guarantee contracts issued [member] | Gross carrying amount [member] | Investment grade [member]
Disclosure of credit risk exposure [line items]
Commitments and financial guarantee contracts	1,491	884
Stage Two [Member] | Loan commitments and financial guarantee contracts issued [member] | Gross carrying amount [member] | Sub investment grade [member]
Disclosure of credit risk exposure [line items]
Commitments and financial guarantee contracts	17,614	6,435
Stage Two [Member] | Loan commitments and financial guarantee contracts issued [member] | Gross carrying amount [member] | Watch list [member]
Disclosure of credit risk exposure [line items]
Commitments and financial guarantee contracts	3,419	2,133
Stage three [member] | Residential mortgages [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	413	397
Stage three [member] | Residential mortgages [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	17	17
Stage three [member] | Residential mortgages [member] | Gross carrying amount [member] | Default and impaired [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	430	414
Stage three [member] | Consumer installment and other personal loans [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	306	332
Stage three [member] | Consumer installment and other personal loans [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	127	136
Stage three [member] | Consumer installment and other personal loans [member] | Gross carrying amount [member] | Default and impaired [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	433	468
Stage three [member] | Business and government loans [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	2,975	1,437
Stage three [member] | Business and government loans [member] | Gross carrying amount [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	575	310
Stage three [member] | Business and government loans [member] | Gross carrying amount [member] | Default and impaired [member]
Disclosure of credit risk exposure [line items]
Credit risk exposure for loans	3,550	1,747
Stage three [member] | Loan commitments and financial guarantee contracts issued [member]
Disclosure of credit risk exposure [line items]
Allowance for credit losses	12	22
Commitments and financial guarantee contracts	1,152	302
Stage three [member] | Loan commitments and financial guarantee contracts issued [member] | Gross carrying amount [member] | Default and impaired [member]
Disclosure of credit risk exposure [line items]
Commitments and financial guarantee contracts	$ 1,164	$ 324

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses - Summary of Continuity in Loss Allowance by Each Product Type (Detail) - CAD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Disclosure of credit risk exposure [line items]
Beginning balance			$ 2,094
Ending balance	$ 3,707		3,707
IFRS9 [member]
Disclosure of credit risk exposure [line items]
Ending balance	3,707	$ 2,058	3,707	$ 2,058
IFRS9 [member] | Allowance for credit losses related to loans [member]
Disclosure of credit risk exposure [line items]
Ending balance	3,251	1,802	3,251	1,802
IFRS9 [member] | Allowance for credit losses related to other credit instruments [member]
Disclosure of credit risk exposure [line items]
Ending balance	456	256	456	256
Residential mortgages [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	93	97	86	102
Net remeasurement of loss allowance	67	(3)	93	(1)
Loan originations	4	2	8	5
Derecognitions and maturities	(2)	(2)	(5)	(4)
Model changes	(4)		(8)
Total PCL	65	(3)	88
Write-offs	(3)	(6)	(9)	(13)
Recoveries of previous write-offs	2	7	6	12
Foreign exchange and other	(7)	(8)	(21)	(14)
Ending balance	150	87	150	87
Consumer installment and other personal loans [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	648	538	558	560
Net remeasurement of loss allowance	109	78	297	146
Loan originations	9	12	32	35
Derecognitions and maturities	(13)	(17)	(39)	(42)
Model changes	19		49
Total PCL	124	73	339	139
Write-offs	(81)	(80)	(248)	(233)
Recoveries of previous write-offs	22	25	64	97
Foreign exchange and other	(16)	(9)	(16)	(16)
Ending balance	697	547	697	547
Consumer installment and other personal loans [member] | IFRS9 [member] | Allowance for credit losses related to loans [member]
Disclosure of credit risk exposure [line items]
Ending balance	3,251		3,251
Consumer installment and other personal loans [member] | IFRS9 [member] | Allowance for credit losses related to other credit instruments [member]
Disclosure of credit risk exposure [line items]
Ending balance	456		456
Credit Card Loans [Member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	434	308	305	293
Net remeasurement of loss allowance	81	79	343	211
Loan originations	5	5	13	15
Derecognitions and maturities	(8)	(7)	(22)	(21)
Model changes	(11)		(11)
Total PCL	67	77	323	205
Write-offs	(80)	(91)	(257)	(250)
Recoveries of previous write-offs	19	20	66	66
Foreign exchange and other	(11)	1	(8)	1
Ending balance	429	315	429	315
Business and government loans [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	1,961	1,019	1,145	915
Net remeasurement of loss allowance	789	157	1,762	248
Loan originations	53	53	153	163
Derecognitions and maturities	(57)	(50)	(149)	(132)
Model changes	(11)		(22)
Total PCL	774	160	1,744	279
Write-offs	(300)	(52)	(516)	(123)
Recoveries of previous write-offs	37	2	60	61
Foreign exchange and other	(41)	(20)	(2)	(23)
Ending balance	2,431	1,109	2,431	1,109
Stage One [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Ending balance	1,025	536	1,025	536
Stage One [member] | IFRS9 [member] | Allowance for credit losses related to loans [member]
Disclosure of credit risk exposure [line items]
Ending balance	813	409	813	409
Stage One [member] | IFRS9 [member] | Allowance for credit losses related to other credit instruments [member]
Disclosure of credit risk exposure [line items]
Ending balance	212	127	212	127
Stage One [member] | Residential mortgages [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	29	16	15	20
Transfer to Stage 1	8	7	19	21
Transfer to Stage 2	(1)	(1)	(2)	(2)
Net remeasurement of loss allowance	27	(9)	29	(29)
Loan originations	4	2	8	5
Derecognitions and maturities		(1)	(1)	(1)
Model changes	(1)		(3)
Total PCL	37	(2)	50	(6)
Foreign exchange and other	(1)
Ending balance	65	14	65	14
Stage One [member] | Consumer installment and other personal loans [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	116	86	89	90
Transfer to Stage 1	59	44	138	131
Transfer to Stage 2	(10)	(4)	(20)	(13)
Transfer to Stage 3	(1)	(1)	(3)	(4)
Net remeasurement of loss allowance	(50)	(40)	(112)	(134)
Loan originations	9	12	32	35
Derecognitions and maturities	(4)	(4)	(12)	(12)
Model changes	11		16
Total PCL	14	7	39	3
Foreign exchange and other	(3)	(1)	(1)	(1)
Ending balance	127	92	127	92
Stage One [member] | Credit Card Loans [Member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	115	77	80	74
Transfer to Stage 1	50	28	107	78
Transfer to Stage 2	(9)	(5)	(25)	(16)
Transfer to Stage 3		(1)	(1)	(1)
Net remeasurement of loss allowance	(44)	(24)	(57)	(68)
Loan originations	5	5	13	15
Derecognitions and maturities	(1)	(1)	(3)	(3)
Model changes	(1)		(1)
Total PCL		2	33	5
Foreign exchange and other	(3)		(1)
Ending balance	112	79	112	79
Stage One [member] | Business and government loans [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	580	336	338	298
Transfer to Stage 1	45	31	109	139
Transfer to Stage 2	(65)	(16)	(118)	(41)
Transfer to Stage 3	(4)	(1)	(6)	(1)
Net remeasurement of loss allowance	145	(23)	321	(141)
Loan originations	53	53	153	163
Derecognitions and maturities	(21)	(28)	(63)	(75)
Model changes	(7)		(30)
Total PCL	146	16	366	44
Foreign exchange and other	(5)	(1)	17	9
Ending balance	721	351	721	351
Stage Two [Member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Ending balance	1,951	1,052	1,951	1,052
Stage Two [Member] | IFRS9 [member] | Allowance for credit losses related to loans [member]
Disclosure of credit risk exposure [line items]
Ending balance	1,719	946	1,719	946
Stage Two [Member] | IFRS9 [member] | Allowance for credit losses related to other credit instruments [member]
Disclosure of credit risk exposure [line items]
Ending balance	232	106	232	106
Stage Two [Member] | Residential mortgages [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	37	37	33	38
Transfer to Stage 1	(7)	(6)	(17)	(19)
Transfer to Stage 2	4	2	7	5
Transfer to Stage 3	(1)	(3)	(4)	(7)
Net remeasurement of loss allowance	30	6	47	21
Derecognitions and maturities	(2)	(1)	(4)	(3)
Model changes	(3)		(5)
Total PCL	21	(2)	24	(3)
Foreign exchange and other			1
Ending balance	58	35	58	35
Stage Two [Member] | Consumer installment and other personal loans [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	407	324	333	326
Transfer to Stage 1	(57)	(42)	(131)	(122)
Transfer to Stage 2	21	18	66	62
Transfer to Stage 3	(27)	(32)	(79)	(84)
Net remeasurement of loss allowance	103	66	247	168
Derecognitions and maturities	(9)	(13)	(27)	(30)
Model changes	8		33
Total PCL	39	(3)	109	(6)
Foreign exchange and other	(3)	(1)	1
Ending balance	443	320	443	320
Stage Two [Member] | Credit Card Loans [Member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	319	231	225	219
Transfer to Stage 1	(50)	(28)	(107)	(78)
Transfer to Stage 2	9	5	25	16
Transfer to Stage 3	(48)	(46)	(129)	(125)
Net remeasurement of loss allowance	105	79	332	221
Derecognitions and maturities	(7)	(6)	(19)	(18)
Model changes	(10)		(10)
Total PCL	(1)	4	92	16
Foreign exchange and other	(1)	1		1
Ending balance	317	236	317	236
Stage Two [Member] | Business and government loans [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	795	423	496	408
Transfer to Stage 1	(45)	(30)	(102)	(135)
Transfer to Stage 2	66	17	121	53
Transfer to Stage 3	(163)	(14)	(226)	(41)
Net remeasurement of loss allowance	510	91	883	230
Derecognitions and maturities	(36)	(22)	(86)	(57)
Model changes	(4)		8
Total PCL	328	42	598	50
Foreign exchange and other	10	(4)	39	3
Ending balance	1,133	461	1,133	461
Stage three [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Ending balance	731	470	731	470
Stage three [member] | IFRS9 [member] | Allowance for credit losses related to loans [member]
Disclosure of credit risk exposure [line items]
Ending balance	719	447	719	447
Stage three [member] | IFRS9 [member] | Allowance for credit losses related to other credit instruments [member]
Disclosure of credit risk exposure [line items]
Ending balance	12	23	12	23
Stage three [member] | Residential mortgages [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	27	44	38	44
Transfer to Stage 1	(1)	(1)	(2)	(2)
Transfer to Stage 2	(3)	(1)	(5)	(3)
Transfer to Stage 3	1	3	4	7
Net remeasurement of loss allowance	10		17	7
Total PCL	7	1	14	9
Write-offs	(3)	(6)	(9)	(13)
Recoveries of previous write-offs	2	7	6	12
Foreign exchange and other	(6)	(8)	(22)	(14)
Ending balance	27	38	27	38
Stage three [member] | Consumer installment and other personal loans [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	125	128	136	144
Transfer to Stage 1	(2)	(2)	(7)	(9)
Transfer to Stage 2	(11)	(14)	(46)	(49)
Transfer to Stage 3	28	33	82	88
Net remeasurement of loss allowance	56	52	162	112
Total PCL	71	69	191	142
Write-offs	(81)	(80)	(248)	(233)
Recoveries of previous write-offs	22	25	64	97
Foreign exchange and other	(10)	(7)	(16)	(15)
Ending balance	127	135	127	135
Stage three [member] | Credit Card Loans [Member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Transfer to Stage 3	48	47	130	126
Net remeasurement of loss allowance	20	24	68	58
Total PCL	68	71	198	184
Write-offs	(80)	(91)	(257)	(250)
Recoveries of previous write-offs	19	20	66	66
Foreign exchange and other	(7)		(7)
Stage three [member] | Business and government loans [member] | IFRS9 [member]
Disclosure of credit risk exposure [line items]
Beginning balance	586	260	311	209
Transfer to Stage 1		(1)	(7)	(4)
Transfer to Stage 2	(1)	(1)	(3)	(12)
Transfer to Stage 3	167	15	232	42
Net remeasurement of loss allowance	134	89	558	159
Total PCL	300	102	780	185
Write-offs	(300)	(52)	(516)	(123)
Recoveries of previous write-offs	37	2	60	61
Foreign exchange and other	(46)	(15)	(58)	(35)
Ending balance	$ 577	$ 297	$ 577	$ 297

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses - Summary of Continuity in Loss Allowance by Each Product Type (Parenthetical) (Detail) - CAD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Other assets [member]
Disclosure of credit risk exposure [line items]
Provision for credit losses	$ 24	$ (1)	$ 27	$ (4)

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses - Schedule of Loans and Allowance for Credit Losses by Geographic Region (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Loans, Gross amount	$ 448,579	$ 471,719	$ 427,944
Allowance for credit losses	3,251	2,776	1,850
Loans, Net amount	445,328	$ 468,943	426,094
Allowance for credit losses related to loans [member]
Disclosure of detailed information about financial instruments [line items]
Loans, Gross amount	448,579		427,944
Loans, Net amount	445,328		426,094
Allowance for credit losses related to loans [member] | Related to impaired loans [member]
Disclosure of detailed information about financial instruments [line items]
Allowance for credit losses	719		463
Allowance for credit losses related to loans [member] | Related to performing loans [member]
Disclosure of detailed information about financial instruments [line items]
Allowance for credit losses	2,532		1,387
Allowance for credit losses related to loans [member] | Canada [member]
Disclosure of detailed information about financial instruments [line items]
Loans, Gross amount	270,348		258,842
Loans, Net amount	268,668		257,895
Allowance for credit losses related to loans [member] | Canada [member] | Related to impaired loans [member]
Disclosure of detailed information about financial instruments [line items]
Allowance for credit losses	345		207
Allowance for credit losses related to loans [member] | Canada [member] | Related to performing loans [member]
Disclosure of detailed information about financial instruments [line items]
Allowance for credit losses	1,335		740
Allowance for credit losses related to loans [member] | United States [member]
Disclosure of detailed information about financial instruments [line items]
Loans, Gross amount	166,278		158,454
Loans, Net amount	164,740		157,568
Allowance for credit losses related to loans [member] | United States [member] | Related to impaired loans [member]
Disclosure of detailed information about financial instruments [line items]
Allowance for credit losses	374		256
Allowance for credit losses related to loans [member] | United States [member] | Related to performing loans [member]
Disclosure of detailed information about financial instruments [line items]
Allowance for credit losses	1,164		630
Allowance for credit losses related to loans [member] | Other countries [member]
Disclosure of detailed information about financial instruments [line items]
Loans, Gross amount	11,953		10,648
Loans, Net amount	11,920		10,631
Allowance for credit losses related to loans [member] | Other countries [member] | Related to performing loans [member]
Disclosure of detailed information about financial instruments [line items]
Allowance for credit losses	$ 33		$ 17

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses - Schedule of Loans and Allowance for Credit Losses by Geographic Region (Parenthetical) (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Other liabilities	$ 33,885	$ 38,201	$ 38,607
Allowance for credit losses on impaired loans, other credit instruments [Member] | Related to impaired loans [member]
Disclosure of detailed information about financial instruments [line items]
Other liabilities	12		22
Allowance for credit losses on performing loans, other credit instruments [member] | Related to performing loans [member]
Disclosure of detailed information about financial instruments [line items]
Other liabilities	$ 444		$ 222

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses - Schedule of impaired loans, including the related allowances (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Oct. 31, 2019
Financial assets impaired [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	$ 3,694	$ 2,166
Financial assets impaired [member] | Canada [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	1,124	707
Financial assets impaired [member] | United States [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	2,511	1,459
Financial assets impaired [member] | Other countries [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	59
Residential mortgages [member] | Financial assets impaired [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	413	397
Consumer installment and other personal [member] | Financial assets impaired [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	306	332
Business and government loans [member] | Financial assets impaired [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	2,975	1,437
Accumulated impairment [member] | Related to specific allowances [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	719	463
Accumulated impairment [member] | Related to specific allowances [member] | Canada [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	345	207
Accumulated impairment [member] | Related to specific allowances [member] | United States [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	374	256
Accumulated impairment [member] | Residential mortgages [member] | Related to specific allowances [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	17	17
Accumulated impairment [member] | Consumer installment and other personal [member] | Related to specific allowances [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	127	136
Accumulated impairment [member] | Business and government loans [member] | Related to specific allowances [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	575	310
Gross carrying amount [member] | Financial assets impaired [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	4,413	2,629
Gross carrying amount [member] | Financial assets impaired [member] | Canada [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	1,469	914
Gross carrying amount [member] | Financial assets impaired [member] | United States [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	2,885	1,715
Gross carrying amount [member] | Financial assets impaired [member] | Other countries [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	59
Gross carrying amount [member] | Residential mortgages [member] | Financial assets impaired [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	430	414
Gross carrying amount [member] | Consumer installment and other personal [member] | Financial assets impaired [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	433	468
Gross carrying amount [member] | Business and government loans [member] | Financial assets impaired [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	$ 3,550	$ 1,747

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses - Schedule of impaired loans, including the related allowances (Parenthetical) (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Other liabilities	$ 33,885	$ 38,201	$ 38,607
Accumulated impairment [member] | Allowance for credit losses related to other credit instruments [member] | Related to specific allowances [member]
Disclosure of detailed information about financial instruments [line items]
Other liabilities	$ 12		$ 22

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses - Summary of Loans that are Past Due but not Classified as Impaired (Detail) - Financial assets past due but not impaired [member] - CAD ($) $ in Millions	Jul. 31, 2020	Oct. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Total loans	$ 3,343	$ 4,007
Residential mortgages [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	961	1,287
Credit card, consumer installment and other personal loans [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	1,670	2,103
Business and government loans [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	712	617
1 - 29 days [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	2,246	2,747
1 - 29 days [member] | Residential mortgages [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	598	806
1 - 29 days [member] | Credit card, consumer installment and other personal loans [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	1,261	1,590
1 - 29 days [member] | Business and government loans [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	387	351
1 - 3 Months [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	956	1,098
1 - 3 Months [member] | Residential mortgages [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	335	465
1 - 3 Months [member] | Credit card, consumer installment and other personal loans [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	328	426
1 - 3 Months [member] | Business and government loans [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	293	207
90 days or more [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	141	162
90 days or more [member] | Residential mortgages [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	28	16
90 days or more [member] | Credit card, consumer installment and other personal loans [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	81	87
90 days or more [member] | Business and government loans [member]
Disclosure of detailed information about financial instruments [line items]
Total loans	$ 32	$ 59

Loans and Allowance for Cred_12

Loans and Allowance for Credit Losses - Summary of Loans that are Past Due but not Classified as Impaired (Parenthetical) (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Oct. 31, 2019
90 days or more [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	$ 43	$ 54

Loans and Allowance for Cred_13

Loans and Allowance for Credit Losses - Summary of Key Economic Variables Used in Base Case (Detail)	9 Months Ended	12 Months Ended
	Jul. 31, 2020	Oct. 31, 2019
Base Scenario [member] | Canada [member] | 2020 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	(6.00%)	1.70%
BBB	2.40%	2.30%
Unemployment rates	9.50%	5.70%
Housing Price Index ("HPI")	3.50%	2.00%
Base Scenario [member] | Canada [member] | 2021 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	6.00%	1.60%
BBB	2.30%	2.30%
Unemployment rates	8.00%	5.90%
Housing Price Index ("HPI")	0.00%	2.50%
Base Scenario [member] | United States [member] | 2020 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	(5.50%)	1.80%
BBB	2.50%	2.30%
Unemployment rates	8.90%	3.70%
Housing Price Index ("HPI")	1.00%	3.00%
Base Scenario [member] | United States [member] | 2021 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	5.00%	1.90%
BBB	2.40%	2.40%
Unemployment rates	7.00%	3.80%
Housing Price Index ("HPI")	1.60%	2.70%
Benign scenario [member] | Canada [member] | 2020 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	(4.60%)	2.90%
BBB	2.10%	2.00%
Unemployment rates	8.50%	5.10%
Housing Price Index ("HPI")	5.30%	3.70%
Benign scenario [member] | Canada [member] | 2021 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	8.90%	2.50%
BBB	1.90%	2.10%
Unemployment rates	6.50%	5.00%
Housing Price Index ("HPI")	5.40%	3.70%
Benign scenario [member] | United States [member] | 2020 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	(4.10%)	2.40%
BBB	2.20%	1.80%
Unemployment rates	7.50%	3.30%
Housing Price Index ("HPI")	2.40%	4.40%
Benign scenario [member] | United States [member] | 2021 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	7.80%	2.40%
BBB	1.90%	2.00%
Unemployment rates	5.40%	3.20%
Housing Price Index ("HPI")	4.60%	4.20%
Adverse scenario [member] | Canada [member] | 2020 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	(7.60%)	(2.30%)
BBB	2.80%	4.50%
Unemployment rates	10.90%	8.50%
Housing Price Index ("HPI")	0.80%	(12.30%)
Adverse scenario [member] | Canada [member] | 2021 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	3.70%	0.50%
BBB	3.10%	4.10%
Unemployment rates	10.00%	9.00%
Housing Price Index ("HPI")	(7.50%)	(4.70%)
Adverse scenario [member] | United States [member] | 2020 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	(7.10%)	(2.00%)
BBB	3.00%	4.10%
Unemployment rates	10.30%	6.10%
Housing Price Index ("HPI")	(0.40%)	(5.70%)
Adverse scenario [member] | United States [member] | 2021 forecast [member]
Disclosure of detailed information about financial instruments [line items]
Real gross domestic product	2.50%	0.60%
BBB	3.20%	3.60%
Unemployment rates	8.90%	6.80%
Housing Price Index ("HPI")	(1.90%)	(2.20%)

Deposits and Subordinated Deb_2

Deposits and Subordinated Debt - Summary of Deposits (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019
Disclosure Of Deposits [Line Items]
Interest bearing	$ 52,778		$ 34,440
Non-interest bearing	72,403		58,467
Payables after notice	223,809		180,343
Payable on a fixed date	311,610		294,893
Total	660,600	$ 653,710	568,143
Canada [member]
Disclosure Of Deposits [Line Items]
Interest bearing	39,943		27,338
Non-interest bearing	62,427		49,911
Payables after notice	107,555		90,630
Payable on a fixed date	201,878		181,835
Total	411,803		349,714
United States [member]
Disclosure Of Deposits [Line Items]
Interest bearing	11,254		6,043
Non-interest bearing	9,935		8,531
Payables after notice	114,926		88,604
Payable on a fixed date	77,713		86,368
Total	213,828		189,546
Other countries [member]
Disclosure Of Deposits [Line Items]
Interest bearing	1,581		1,059
Non-interest bearing	41		25
Payables after notice	1,328		1,109
Payable on a fixed date	32,019		26,690
Total	34,969		28,883
Banks [Member]
Disclosure Of Deposits [Line Items]
Interest bearing	3,245		1,996
Non-interest bearing	1,773		1,530
Payables after notice	1,240		1,017
Payable on a fixed date	35,641		19,273
Total	41,899		23,816
Business and governments [member]
Disclosure Of Deposits [Line Items]
Interest bearing	45,320		29,083
Non-interest bearing	41,901		33,853
Payables after notice	115,048		85,022
Payable on a fixed date	195,436		195,199
Total	397,705		343,157
Individuals [Member]
Disclosure Of Deposits [Line Items]
Interest bearing	4,213		3,361
Non-interest bearing	28,729		23,084
Payables after notice	107,521		94,304
Payable on a fixed date	80,533		80,421
Total	$ 220,996		$ 201,170

Deposits and Subordinated Deb_3

Deposits and Subordinated Debt - Summary of Deposits (Parenthetical) (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Oct. 31, 2019
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	$ 311,610	$ 294,893
Total deposits payable on a fixed date	40,757	25,438
Deposits with Bank	12,741
U.S. dollars [member]
Disclosure Of Deposits [Line Items]
Deposits liabilities	318,088	279,860
Non USD Non CAD [Member]
Disclosure Of Deposits [Line Items]
Deposits liabilities	38,861	36,680
Bank Recapitalization (Bail-In) Regime [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	24,990	16,248
Canada [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	201,878	181,835
United States [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	77,713	86,368
Other countries [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	32,019	26,690
More Than One Hundred Thousand [Member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	276,218	258,862
More Than One Hundred Thousand [Member] | Canada [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	173,167	152,499
More Than One Hundred Thousand [Member] | Canada [member] | 0 to 3 months [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	27,729	26,234
More Than One Hundred Thousand [Member] | Canada [member] | 3-6 month [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	11,351	8,400
More Than One Hundred Thousand [Member] | Canada [member] | Later than six months and not later than one year [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	41,220	31,155
More Than One Hundred Thousand [Member] | Canada [member] | After 12 months [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	92,867	86,710
More Than One Hundred Thousand [Member] | United States [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	71,037	79,682
More Than One Hundred Thousand [Member] | Other countries [member]
Disclosure Of Deposits [Line Items]
Deposits booked payable on a fixed date	$ 32,014	$ 26,681

Deposits and Subordinated Deb_4

Deposits and Subordinated Debt - Additional Information (Detail) - Subordinated debt [member] $ in Millions	Jul. 17, 2020CAD ($)
Disclosure Of Deposits [Line Items]
Notional amount	$ 1,250
Interest rate	2.077%
Maturity date	June 17, 2030

Equity - Summary of Classes of

Equity - Summary of Classes of Preferred and Common Shares Outstanding (Detail) - CAD ($) $ in Millions	9 Months Ended
	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Oct. 31, 2018
Disclosure of classes of share capital [line items]
Balance at End of Period	$ 54,587	$ 55,234	$ 51,076	$ 50,643
Class B Series 25 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	9,425,607		9,425,607
Balance at End of Period	$ 236		$ 236
Convertible into	Class B -Series 26
Class B Series 26 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	2,174,393		2,174,393
Balance at End of Period	$ 54		$ 54
Convertible into	Class B -Series 25
Class B Series 27 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	20,000,000		20,000,000
Balance at End of Period	$ 500		$ 500
Convertible into	Class B -Series 28
Class B Series 29 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	16,000,000		16,000,000
Balance at End of Period	$ 400		$ 400
Convertible into	Class B -Series 30
Class B Series 31 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	12,000,000		12,000,000
Balance at End of Period	$ 300		$ 300
Convertible into	Class B -Series 32
Class B Series 33 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	8,000,000		8,000,000
Balance at End of Period	$ 200		$ 200
Convertible into	Class B -Series 34
Class B Series 35 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	6,000,000		6,000,000
Balance at End of Period	$ 150		$ 150
Convertible into	Not convertible
Class B Series 36 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	600,000		600,000
Balance at End of Period	$ 600		$ 600
Convertible into	Class B -Series 37
Class B Series 38 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	24,000,000		24,000,000
Balance at End of Period	$ 600		$ 600
Convertible into	Class B -Series 39
Class B Series 40 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	20,000,000		20,000,000
Balance at End of Period	$ 500		$ 500
Convertible into	Class B - Series 41
Class B Series 42 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	16,000,000		16,000,000
Balance at End of Period	$ 400		$ 400
Convertible into	Class B -Series 43
Class B Series 44 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	16,000,000		16,000,000
Balance at End of Period	$ 400		$ 400
Convertible into	Class B -Series 45
Class B Series 46 [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	14,000,000		14,000,000
Balance at End of Period	$ 350		$ 350
Convertible into	Class B -Series 47
Preferred shares [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	$ 4,690		4,690
Other Equity Instrument [Member]
Disclosure of classes of share capital [line items]
Balance at End of Period	$ 658		$ 658
Common shares [member]
Disclosure of classes of share capital [line items]
Balance at End of Period	642,804,880		639,232,276
Balance at End of Period	$ 13,200	$ 13,000	$ 12,971	$ 12,958	$ 12,939	$ 12,929
Ordinary and preference shares [Member]
Disclosure of classes of share capital [line items]
Balance at End of Period	$ 18,548		$ 18,319

Equity - Summary of Classes o_2

Equity - Summary of Classes of Preferred and Common Shares Outstanding (Parenthetical) (Detail) - $ / shares	3 Months Ended	9 Months Ended	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2020	Oct. 31, 2019
Bottom of range [member]
Disclosure of classes of share capital [line items]
Common stock conversion price	$ 5	$ 5
Common shares [member]
Disclosure of classes of share capital [line items]
Number of shares	642,804,880	642,804,880	639,232,276
Stock options issued, convertible shares		6,635,228	6,108,307
Number of shares issued	0	0
Common shares [member] | Dividend reinvestment and share purchase plan [member]
Disclosure of classes of share capital [line items]
Number of shares issued	3,355,394	3,355,394
Common shares [member] | Stock Option Plan [member]
Disclosure of classes of share capital [line items]
Number of shares issued	8,614	423,737
Treasury shares [member]
Disclosure of classes of share capital [line items]
Number of shares	206,527	206,527

Equity - Additional Information

Equity - Additional Information (Detail) $ in Millions, $ in Millions	Aug. 10, 2020shares	Feb. 25, 2020shares	Jul. 31, 2020CAD ($)shares	Jul. 31, 2020CAD ($)shares	Jul. 31, 2020USD ($)
Additional Tier 1 Capital Notes (NVCC) [member]
Disclosure of classes of share capital [line items]
Note Issued Face Value			$ 658	$ 658	$ 500
Interest Rate			4.80%
Common shares [member] | Dividend reinvestment and share purchase plan [member]
Disclosure of classes of share capital [line items]
Number of shares issued			3,355,394	3,355,394
Normal course issuer bid [member] | Top of range [member] | Major ordinary share transactions [member]
Disclosure of classes of share capital [line items]
Purchase of common shares for cancellation		12,000,000
Class B Series 33 [member]
Disclosure of classes of share capital [line items]
Share conversion basis				one-for-one basis
Dividend rate reset term				5 years
Earliest redemption date				Aug. 24, 2025
Dividend rate, percent			3.054%	3.054%	3.054%
Class B Series 33 [member] | Major ordinary share transactions [member]
Disclosure of classes of share capital [line items]
Number of shares tendered	118,563
Number of shares required for conversion	1,000,000
Number of shares issued	0

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Summary of Financial Instruments Designated At Fair Value Through Profit Or Loss (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019
Securities
Amortized cost	$ 45,229	$ 41,592	$ 24,472
Loans
Consumer instalment and other personal	69,168	69,818	67,736
Credit cards	7,947	7,672	8,859
Business and government	245,983	268,695	227,609
Loans gross of allowance for loan losses	448,579	471,719	427,944
Deposits	660,600	653,710	568,143
Securitization and structured entities' liabilities	27,461	27,888	27,159
Subordinated Debt	8,513	$ 7,344	6,995
Not Carried At Fair Value [member] | At carrying value [member]
Securities
Amortized cost	45,229		24,472
Loans
Residential mortgages	125,341		123,676
Consumer instalment and other personal	68,506		67,200
Credit cards	7,617		8,623
Business and government	240,352		224,442
Loans gross of allowance for loan losses	441,816		423,941
Deposits	643,133		552,314
Securitization and structured entities' liabilities	27,461		27,159
Subordinated Debt	8,513		6,995
Not Carried At Fair Value [member] | Fair Value [Member]
Securities
Amortized cost	45,875		24,622
Loans
Residential mortgages	127,108		124,093
Consumer instalment and other personal	69,181		67,516
Credit cards	7,617		8,623
Business and government	242,295		225,145
Loans gross of allowance for loan losses	446,201		425,377
Deposits	645,402		553,444
Securitization and structured entities' liabilities	28,159		27,342
Subordinated Debt	$ 8,790		$ 7,223

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Summary of Financial Instruments Designated At Fair Value Through Profit Or Loss (Parenthetical) (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019
Fairvalue of financial instruments on balance sheet [line items]
Business and government	$ 245,983	$ 268,695	$ 227,609
Deposits	660,600	$ 653,710	568,143
Financial assets at fair value through profit or loss [member]
Fairvalue of financial instruments on balance sheet [line items]
Business and government	3,562		2,156
Financial assets at fair value through profit or loss [member] | Not Carried At Fair Value [member]
Fairvalue of financial instruments on balance sheet [line items]
Deposits	17,467		15,829
Financial assets at fair value through other comprehensive income [member]
Fairvalue of financial instruments on balance sheet [line items]
Business and government	$ 50		$ 22

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Summary of Fair Value Measurement of Assets And Liabilities (Detail) - CAD ($) $ in Millions	Jul. 31, 2020	Apr. 30, 2020	Oct. 31, 2019
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	$ 89,207	$ 83,362	$ 85,903
FVTPL Securities	14,053	13,572	13,704
FVOCI Securities	78,493	74,476	64,515
Business and Government Loans	245,983	268,695	227,609
Derivative Assets
Derivative Assets	38,796	41,150	22,144
Derivative Liabilities
Derivative Liabilities	39,859	$ 45,909	23,598
Measured at fair value [Member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	89,207		85,903
FVTPL Securities	14,053		13,704
FVOCI Securities	78,493		64,515
Business and Government Loans	3,612		2,178
Securities sold but not yet purchased	30,579		26,253
Structured note liabilities and other note liabilities	17,467		15,829
Annuity liabilities	1,232		1,043
Fair value liabilities	49,278		43,125
Derivative Assets
Derivative Assets	38,796		22,144
Derivative Liabilities
Derivative Liabilities	39,859		23,598
Measured at fair value [Member] | Canadian federal government [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	8,644		8,330
FVTPL Securities	735		517
FVOCI Securities	27,582		11,944
Measured at fair value [Member] | Canadian government provincial [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	9,023		7,527
FVTPL Securities	1,470		1,279
FVOCI Securities	4,725		6,012
Measured at fair value [Member] | U.S. federal government [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	9,210		8,763
FVTPL Securities	44		48
FVOCI Securities	18,679		15,975
Measured at fair value [Member] | US States, municipalities and agencies [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	408		674
FVOCI Securities	5,363		4,161
Measured at fair value [Member] | Other governments [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	2,891		1,585
FVTPL Securities	95		49
FVOCI Securities	7,150		7,335
Measured at fair value [Member] | NHA MBS US agency MBS and CMO [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	9,702		11,046
FVTPL Securities	3		5
FVOCI Securities	11,538		14,000
Measured at fair value [Member] | Corporate debt [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	10,459		7,718
FVTPL Securities	8,237		8,217
FVOCI Securities	3,369		5,007
Measured at fair value [Member] | Loans held for trading [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	45		103
Measured at fair value [Member] | Corporate equity [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	38,825		40,157
FVTPL Securities	3,469		3,589
FVOCI Securities	87		81
Measured at fair value [Member] | Interest rate contracts [member]
Derivative Assets
Derivative Assets	17,357		10,457
Derivative Liabilities
Derivative Liabilities	12,867		7,954
Measured at fair value [Member] | Foreign exchange contracts [member]
Derivative Assets
Derivative Assets	15,813		9,269
Derivative Liabilities
Derivative Liabilities	18,735		10,863
Measured at fair value [Member] | Commodity contracts [member]
Derivative Assets
Derivative Assets	2,012		1,146
Derivative Liabilities
Derivative Liabilities	2,850		1,680
Measured at fair value [Member] | Equity contracts [member]
Derivative Assets
Derivative Assets	3,603		1,223
Derivative Liabilities
Derivative Liabilities	5,385		2,999
Measured at fair value [Member] | Credit default swaps [member]
Derivative Assets
Derivative Assets	11		49
Derivative Liabilities
Derivative Liabilities	22		102
Valued using quoted market prices [member] | Measured at fair value [Member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	58,770		62,556
FVTPL Securities	2,626		2,456
FVOCI Securities	43,826		36,636
Securities sold but not yet purchased	25,323		22,393
Fair value liabilities	25,323		22,393
Derivative Assets
Derivative Assets	1,233		576
Derivative Liabilities
Derivative Liabilities	1,124		352
Valued using quoted market prices [member] | Measured at fair value [Member] | Canadian federal government [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	4,746		6,959
FVTPL Securities	627		410
FVOCI Securities	21,492		11,168
Valued using quoted market prices [member] | Measured at fair value [Member] | Canadian government provincial [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	2,056		3,871
FVTPL Securities	239		364
FVOCI Securities	1,944		3,798
Valued using quoted market prices [member] | Measured at fair value [Member] | U.S. federal government [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	8,000		8,001
FVTPL Securities	9
FVOCI Securities	17,046		15,068
Valued using quoted market prices [member] | Measured at fair value [Member] | US States, municipalities and agencies [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	38		48
FVOCI Securities	6		1
Valued using quoted market prices [member] | Measured at fair value [Member] | Other governments [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	1,406		888
FVOCI Securities	2,748		4,396
Valued using quoted market prices [member] | Measured at fair value [Member] | NHA MBS US agency MBS and CMO [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	5		14
Valued using quoted market prices [member] | Measured at fair value [Member] | Corporate debt [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	3,694		2,620
FVTPL Securities	97		146
FVOCI Securities	590		2,205
Valued using quoted market prices [member] | Measured at fair value [Member] | Corporate equity [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	38,825		40,155
FVTPL Securities	1,654		1,536
Valued using quoted market prices [member] | Measured at fair value [Member] | Interest rate contracts [member]
Derivative Assets
Derivative Assets	24		14
Derivative Liabilities
Derivative Liabilities	31		11
Valued using quoted market prices [member] | Measured at fair value [Member] | Foreign exchange contracts [member]
Derivative Assets
Derivative Assets	9		7
Derivative Liabilities
Derivative Liabilities	12		20
Valued using quoted market prices [member] | Measured at fair value [Member] | Commodity contracts [member]
Derivative Assets
Derivative Assets	457		329
Derivative Liabilities
Derivative Liabilities	603		218
Valued using quoted market prices [member] | Measured at fair value [Member] | Equity contracts [member]
Derivative Assets
Derivative Assets	743		226
Derivative Liabilities
Derivative Liabilities	478		103
Valued using models (with observable inputs) [member] | Measured at fair value [Member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	29,853		22,802
FVTPL Securities	9,620		9,264
FVOCI Securities	34,579		27,797
Business and Government Loans	1,409		442
Securities sold but not yet purchased	5,256		3,860
Structured note liabilities and other note liabilities	17,467		15,829
Annuity liabilities	1,232		1,043
Fair value liabilities	23,955		20,732
Derivative Assets
Derivative Assets	37,563		21,568
Derivative Liabilities
Derivative Liabilities	38,732		23,245
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Canadian federal government [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	3,898		1,371
FVTPL Securities	108		107
FVOCI Securities	6,090		776
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Canadian government provincial [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	6,967		3,656
FVTPL Securities	1,231		915
FVOCI Securities	2,781		2,214
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | U.S. federal government [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	1,210		762
FVTPL Securities	35		48
FVOCI Securities	1,633		907
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | US States, municipalities and agencies [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	370		626
FVOCI Securities	5,356		4,159
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Other governments [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	1,485		697
FVTPL Securities	95		49
FVOCI Securities	4,402		2,939
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | NHA MBS US agency MBS and CMO [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	9,113		10,494
FVTPL Securities	3		5
FVOCI Securities	11,538		14,000
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Corporate debt [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	6,765		5,091
FVTPL Securities	8,140		8,071
FVOCI Securities	2,779		2,802
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Loans held for trading [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	45		103
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Corporate equity [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities			2
FVTPL Securities	8		69
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Interest rate contracts [member]
Derivative Assets
Derivative Assets	17,333		10,443
Derivative Liabilities
Derivative Liabilities	12,836		7,943
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Foreign exchange contracts [member]
Derivative Assets
Derivative Assets	15,804		9,262
Derivative Liabilities
Derivative Liabilities	18,723		10,843
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Commodity contracts [member]
Derivative Assets
Derivative Assets	1,555		817
Derivative Liabilities
Derivative Liabilities	2,247		1,462
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Equity contracts [member]
Derivative Assets
Derivative Assets	2,860		997
Derivative Liabilities
Derivative Liabilities	4,907		2,896
Valued using models (with observable inputs) [member] | Measured at fair value [Member] | Credit default swaps [member]
Derivative Assets
Derivative Assets	11		49
Derivative Liabilities
Derivative Liabilities	19		101
Valued using models (without observable inputs) [member] | Measured at fair value [Member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	584		545
FVTPL Securities	1,807		1,984
FVOCI Securities	88		82
Business and Government Loans	2,203		1,736
Derivative Liabilities
Derivative Liabilities	3		1
Valued using models (without observable inputs) [member] | Measured at fair value [Member] | US States, municipalities and agencies [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
FVOCI Securities	1		1
Valued using models (without observable inputs) [member] | Measured at fair value [Member] | NHA MBS US agency MBS and CMO [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities	584		538
Valued using models (without observable inputs) [member] | Measured at fair value [Member] | Corporate debt [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Trading Securities			7
Valued using models (without observable inputs) [member] | Measured at fair value [Member] | Corporate equity [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
FVTPL Securities	1,807		1,984
FVOCI Securities	87		81
Valued using models (without observable inputs) [member] | Measured at fair value [Member] | Credit default swaps [member]
Derivative Liabilities
Derivative Liabilities	$ 3		$ 1

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Disclosure Of Quantitative Information Of Assets Liabilities (Detail) - Level 3 of fair value hierarchy [member] $ in Millions	9 Months Ended
	Jul. 31, 2020CAD ($)xbps
Corporate equity [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Description of nature of class of assets measured at fair value	Corporate equity
Financial assets at fairvalue	$ 1,807
Description of valuation processes used in fair value measurement, assets	Net Asset Value
Business and government loans [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Description of nature of class of liabilities measured at fair value	Business and government loans
Financial assets at fairvalue	$ 2,203
Description of valuation processes used in fair value measurement, liabilities	Discounted cash flows
NHA MBS US agency MBS and CMO [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Description of nature of class of liabilities measured at fair value	NHA MBS and U.S. agency MBS and CMO
Financial assets at fairvalue	$ 584
Description of valuation processes used in fair value measurement, liabilities	Discounted cash flows
Bottom of range [member] | Corporate equity [member] | Multiple [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Range of input values | x	5
Bottom of range [member] | Business and government loans [member] | Discount Margin [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Range of input values | bps	56
Bottom of range [member] | NHA MBS US agency MBS and CMO [member] | Prepayment Rate [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Range of input values	7.00%
Bottom of range [member] | NHA MBS US agency MBS and CMO [member] | Comparability Adjustment [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Range of input values	(5.26)
Top of range [member] | Corporate equity [member] | Multiple [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Range of input values | x	16
Top of range [member] | Business and government loans [member] | Discount Margin [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Range of input values | bps	224
Top of range [member] | NHA MBS US agency MBS and CMO [member] | Prepayment Rate [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Range of input values	86.00%
Top of range [member] | NHA MBS US agency MBS and CMO [member] | Comparability Adjustment [member]
Disclosure Of Fair Value Of Financial Instruments [Line Items]
Range of input values	5.54

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Disclosure Of Quantitative Information Of Assets Liabilities (Parenthetical) (Detail) $ in Millions	9 Months Ended
	Jul. 31, 2020CAD ($)
Impact of a 10 basis point increase or decrease in discount margin [member]
Quantitative information about level 3 fair value measurements [Line items]
Business and government loans	$ 2
Corporate equity [member]
Quantitative information about level 3 fair value measurements [Line items]
Value of shares held in banks	$ 490

Fair Value of Financial Instr_8

Fair Value of Financial Instruments - Summary of Transfers Between Level 1 and Level 2 (Detail) - CAD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Trading securities [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Transfers out of Level 1 into Level 2 of fair value hierarchy	$ 994	$ 1,734	$ 5,761	$ 5,392
Transfers out of Level 2 into Level 1 of fair value hierarchy	2,682	901	3,952	4,260
Financial assets at fair value through profit or loss [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Transfers out of Level 1 into Level 2 of fair value hierarchy	19	218	518	682
Transfers out of Level 2 into Level 1 of fair value hierarchy	241	38	302	390
Financial assets at fair value through other comprehensive income [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Transfers out of Level 1 into Level 2 of fair value hierarchy	1,768	1,834	9,032	9,723
Transfers out of Level 2 into Level 1 of fair value hierarchy	4,294	2,335	7,012	3,910
Securities sold but not yet purchased [member]
Disclosure Of Fair Value Of Financial Instruments [line items]
Transfers out of Level 1 into Level 2 of fair value hierarchy	681	6,362	4,432	9,905
Transfers out of Level 2 into Level 1 of fair value hierarchy	$ 2,067	$ 98	$ 2,982	$ 2,501

Fair Value of Financial Instr_9

Fair Value of Financial Instruments - Summary of Changes in Level 3 Instruments Carried At Fair Value (Detail) - Valued using models (without observable inputs) [member] - CAD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Trading securities [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Assets at beginning of period	$ 535	$ 222	$ 545	$ 262
Change in fair value included in earnings	(105)	(15)	(235)	(22)
Change in fair value included in other comprehensive income	(20)	(3)	10	1
Purchases	362	123	861	312
Sales	(207)	(102)	(608)	(338)
Transfers into Level 3	41	53	205	98
Transfers out of Level 3	(22)	(6)	(194)	(41)
Assets at end of period	584	272	584	272
Change in unrealized gains (losses) recorded in income for instruments still held	(74)	(6)	(159)	(13)
Trading securities [member] | NHA MBS US Agency MBS And CMO [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Assets at beginning of period	487	215	538	255
Change in fair value included in earnings	(115)	(15)	(245)	(22)
Change in fair value included in other comprehensive income	(18)	(3)	12	1
Purchases	362	97	811	280
Sales	(151)	(96)	(540)	(326)
Transfers into Level 3	41	53	202	98
Transfers out of Level 3	(22)	(5)	(194)	(40)
Assets at end of period	584	246	584	246
Change in unrealized gains (losses) recorded in income for instruments still held	(74)	(6)	(158)	(13)
Trading securities [member] | Corporate debt [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Assets at beginning of period	48	7	7	7
Change in fair value included in earnings	10		10
Change in fair value included in other comprehensive income	(2)		(2)
Purchases		26	50	32
Sales	(56)	(6)	(68)	(12)
Transfers into Level 3			3
Transfers out of Level 3		(1)		(1)
Assets at end of period		26		26
Change in unrealized gains (losses) recorded in income for instruments still held			(1)
Financial assets at fair value through profit or loss [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Assets at beginning of period	2,062	1,907	1,984	1,825
Change in fair value included in earnings	(23)	10	(27)	20
Change in fair value included in other comprehensive income	(57)	(21)	23	2
Purchases	58	77	244	324
Sales	(233)	(66)	(418)	(264)
Maturities/Settlement		(1)		(1)
Transfers into Level 3			1
Assets at end of period	1,807	1,906	1,807	1,906
Change in unrealized gains (losses) recorded in income for instruments still held	2	16	7	36
Financial assets at fair value through profit or loss [member] | Corporate equity [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Assets at beginning of period	2,062	1,907	1,984	1,825
Change in fair value included in earnings	(23)	10	(27)	20
Change in fair value included in other comprehensive income	(57)	(21)	23	2
Purchases	58	77	244	324
Sales	(233)	(66)	(418)	(264)
Maturities/Settlement		(1)		(1)
Transfers into Level 3			1
Assets at end of period	1,807	1,906	1,807	1,906
Change in unrealized gains (losses) recorded in income for instruments still held	2	16	7	36
Financial assets at fair value through other comprehensive income, category [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Assets at beginning of period	84	70	82	63
Purchases	4	10	6	17
Assets at end of period	88	80	88	80
Financial assets at fair value through other comprehensive income, category [member] | Corporate equity [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Assets at beginning of period	83	69	81	62
Purchases	4	10	6	17
Assets at end of period	87	79	87	79
Financial assets at fair value through other comprehensive income, category [member] | US States, municipalities and agencies [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Assets at beginning of period	1	1	1	1
Assets at end of period	1	1	1	1
Business and government loans [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Assets at beginning of period	2,028	2,172	1,736	1,450
Change in fair value included in earnings			(3)	7
Change in fair value included in other comprehensive income	95	(31)	183	13
Purchases	765	155	1,705	1,369
Maturities/Settlement	(685)	(132)	(1,418)	(675)
Assets at end of period	2,203	2,164	2,203	2,164
Derivatives Liabilities [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Liabilities at beginning of period	4		1	2
Transfers into Level 3		1	3	1
Transfers out of Level 3	(1)		(1)	(2)
Liabilities at end of period	3	1	3	1
Derivatives Liabilities [member] | Equity contracts [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Liabilities at beginning of period				1
Transfers out of Level 3				(1)
Derivatives Liabilities [member] | Credit default swaps [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Liabilities at beginning of period	4		1	1
Transfers into Level 3		1	3	1
Transfers out of Level 3	(1)		(1)	(1)
Liabilities at end of period	$ 3	1	$ 3	1
Fair Value Liabilities [Member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Purchases				(7)
Sales		172		179
Liabilities at end of period		172		172
Fair Value Liabilities [Member] | Securities sold but not yet purchased [member]
Disclosure of reconciliation of changes in fair value measurement assets liabilities [line items]
Purchases				(7)
Sales		172		179
Liabilities at end of period		$ 172		$ 172

Capital Management - Additional

Capital Management - Additional Information (Detail)	9 Months Ended
	Jul. 31, 2020
Disclosure of capital management [abstract]
Capital conservation buffer, percentage	2.50%
Common equity surcharge, percentage	1.00%
Domestic stability buffer, percentage	1.00%

Employee Compensation - Share-B

Employee Compensation - Share-Based Compensation - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Jul. 31, 2020CAD ($)	Jul. 31, 2019CAD ($)	Jul. 31, 2020CAD ($)	Jul. 31, 2019CAD ($)
Disclosure of Sharebased Payment [Line Items]
Number of stock options, Granted	0	0	976,087	931,047
Weighted average fair value of options granted	$ 9.46	$ 10.23	$ 9.46	$ 10.23

Employee Compensation - Share_2

Employee Compensation - Share-Based Compensation - Summary of Ranges of Values used for each Option Pricing Assumption (Detail)	9 Months Ended
	Jul. 31, 2020yr$ / shares	Jul. 31, 2019yr$ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Expected dividend yield	4.30%	5.70%
Expected share price volatility	15.40%
Risk-free rate of return		2.50%
Exercise price | $ / shares	$ 101.47	$ 89.90
Bottom of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Expected share price volatility		20.00%
Risk-free rate of return	1.90%
Expected period until exercise (in years)	6.5	6.5
Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Expected share price volatility		20.10%
Risk-free rate of return	2.00%
Expected period until exercise (in years)	7	7

Employee Compensation - Summary

Employee Compensation - Summary of Pension and Other Employee Future Benefit Expenses (Detail) - CAD ($) $ in Millions	3 Months Ended			9 Months Ended
	Jul. 31, 2020	Apr. 30, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Disclosure of defined benefit plans [line items]
Total quarter pension and other employee future benefit expenses recognized in the Consolidated Statement of Income	$ 1,964	$ 1,902	$ 1,960	$ 5,994	$ 6,042
Pension Plans [member]
Disclosure of defined benefit plans [line items]
Current service cost	62		48	187	144
Net interest (income) expense on net defined benefit (asset) liability	1		(5)	1	(14)
Past service cost (income)					(5)
Administrative expenses	1		1	3	3
Benefits expense	64		44	191	128
Canada and Quebec pension plan expense	22		23	75	70
Defined contribution expense	37		37	135	127
Total quarter pension and other employee future benefit expenses recognized in the Consolidated Statement of Income	123		104	401	325
Other employee future benefit plans [member]
Disclosure of defined benefit plans [line items]
Current service cost	2		2	8	7
Net interest (income) expense on net defined benefit (asset) liability	8		10	24	29
Benefits expense	10		12	32	36
Total quarter pension and other employee future benefit expenses recognized in the Consolidated Statement of Income	$ 10		$ 12	$ 32	$ 36

Earnings Per Share - Summary of

Earnings Per Share - Summary of Basic and Diluted Earnings Per Share (Detail) - CAD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended			9 Months Ended
	Jul. 31, 2020	Apr. 30, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Basic Earnings Per Common Share
Net income attributable to equity holders of the bank	$ 1,232	$ 689	$ 1,557	$ 3,513	$ 4,564
Dividends on preferred shares and distributions payable on other equity instruments	(73)		(59)	(195)	(159)
Net income available to common shareholders	$ 1,159		$ 1,498	$ 3,318	$ 4,405
Weighted-average number of common shares outstanding	641,300		638,900	640,129	638,803
Basic earnings per common share	$ 1.81	$ 1	$ 2.34	$ 5.18	$ 6.90
Diluted Earnings Per Common Share
Net income available to common shareholders adjusted for impact of dilutive instruments	$ 1,159		$ 1,498	$ 3,318	$ 4,405
Weighted-average number of common shares outstanding	641,300		638,900	640,129	638,803
Effect of dilutive instruments
Stock options potentially exercisable	2,400		5,734	3,473	5,697
Common shares potentially repurchased	(2,046)		(4,184)	(2,721)	(4,137)
Weighted-average number of diluted common shares outstanding	641,654		640,450	640,881	640,363
Diluted earnings per common share	$ 1.81	$ 1	$ 2.34	$ 5.18	$ 6.88

Earnings Per Share - Summary _2

Earnings Per Share - Summary of Basic and Diluted Earnings Per Share (Parenthetical) (Detail) - $ / shares	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Earnings per share [line items]
Outstanding options excluded from calculation of diluted earnings per share	4,238,334	687,059	3,124,912	908,194
Dilutive potential shares from stock options [Member]
Earnings per share [line items]
Weighted-average exercise price	$ 94.30	$ 104.14	$ 99.72	$ 102.98

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) $ in Millions	9 Months Ended
	Jul. 31, 2020CAD ($)
2011 - 2015 taxation years [member]
Disclosure of Income Tax [Line items]
Additional income tax expense and interest	$ 941

Operating Segmentation - Additi

Operating Segmentation - Additional Information (Detail)	9 Months Ended
	Jul. 31, 2020Business
Disclosure of operating segments [line items]
Number of operating groups	3

Operating Segmentation - Summar

Operating Segmentation - Summary of Average Assets, Grouped by Operating Segment (Detail) - CAD ($) $ in Millions	3 Months Ended			9 Months Ended
	Jul. 31, 2020	Apr. 30, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Disclosure of operating segments [line items]
Net interest income	$ 3,535		$ 3,217	$ 10,441	$ 9,524
Non-interest revenue	3,654		3,449	8,759	9,872
Total Revenue	7,189	$ 5,264	6,666	19,200	19,396
Provision for (recovery of) credit losses	1,054	1,118	306	2,521	619
Insurance claims, commissions and changes in policy benefit liabilities	1,189	(197)	887	1,708	2,374
Depreciation and amortization	400		301	1,211	895
Other non-interest expense	3,044		3,190	9,418	9,748
Income Before Provision for Income Taxes	1,502	827	1,982	4,342	5,760
Provision for (recovery of) income taxes	270	138	425	829	1,196
Reported net income (loss)	1,232	$ 689	1,557	3,513	4,564
Average Assets	977,764		836,963	935,517	826,104
Impaired Loans [Member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	446		243	1,183	520
Performing loans [member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	608		63	1,338	99
Canadian P&C [member]
Disclosure of operating segments [line items]
Net interest income	1,509		1,500	4,561	4,342
Non-interest revenue	453		543	1,443	1,564
Total Revenue	1,962		2,043	6,004	5,906
Provision for (recovery of) credit losses	570		204	1,219	462
Depreciation and amortization	117		87	373	250
Other non-interest expense	843		874	2,549	2,610
Income Before Provision for Income Taxes	432		878	1,863	2,584
Provision for (recovery of) income taxes	112		228	482	670
Reported net income (loss)	320		650	1,381	1,914
Average Assets	252,028		239,948	251,325	235,562
Canadian P&C [member] | Impaired Loans [Member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	257		174	607	410
Canadian P&C [member] | Performing loans [member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	313		30	612	52
US P&C [member]
Disclosure of operating segments [line items]
Net interest income	1,107		1,066	3,287	3,160
Non-interest revenue	292		298	912	858
Total Revenue	1,399		1,364	4,199	4,018
Provision for (recovery of) credit losses	332		98	680	127
Depreciation and amortization	131		111	417	338
Other non-interest expense	621		693	1,913	2,008
Income Before Provision for Income Taxes	315		462	1,189	1,545
Provision for (recovery of) income taxes	52		94	236	327
Reported net income (loss)	263		368	953	1,218
Average Assets	140,615		129,098	139,196	124,590
US P&C [member] | Impaired Loans [Member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	109		61	365	94
US P&C [member] | Performing loans [member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	223		37	315	33
BMO Wealth Management [member]
Disclosure of operating segments [line items]
Net interest income	229		237	672	699
Non-interest revenue	2,255		1,876	4,727	5,396
Total Revenue	2,484		2,113	5,399	6,095
Provision for (recovery of) credit losses	8		(2)	17
Insurance claims, commissions and changes in policy benefit liabilities	1,189		887	1,708	2,374
Depreciation and amortization	93		68	250	200
Other non-interest expense	744		817	2,387	2,463
Income Before Provision for Income Taxes	450		343	1,037	1,058
Provision for (recovery of) income taxes	109		93	261	265
Reported net income (loss)	341		250	776	793
Average Assets	46,308		41,891	45,234	40,345
BMO Wealth Management [member] | Impaired Loans [Member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	1			4	1
BMO Wealth Management [member] | Performing loans [member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	7		(2)	13	(1)
BMO capital markets [member]
Disclosure of operating segments [line items]
Net interest income	952		537	2,503	1,695
Non-interest revenue	576		670	1,445	1,885
Total Revenue	1,528		1,207	3,948	3,580
Provision for (recovery of) credit losses	137		10	595	40
Depreciation and amortization	59		35	171	107
Other non-interest expense	766		764	2,264	2,380
Income Before Provision for Income Taxes	566		398	918	1,053
Provision for (recovery of) income taxes	140		84	210	233
Reported net income (loss)	426		314	708	820
Average Assets	379,131		343,292	370,363	342,829
BMO capital markets [member] | Impaired Loans [Member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	79		7	205	20
BMO capital markets [member] | Performing loans [member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	58		3	390	20
Corporate services [member]
Disclosure of operating segments [line items]
Net interest income	(262)		(123)	(582)	(372)
Non-interest revenue	78		62	232	169
Total Revenue	(184)		(61)	(350)	(203)
Provision for (recovery of) credit losses	7		(4)	10	(10)
Other non-interest expense	70		42	305	287
Income Before Provision for Income Taxes	(261)		(99)	(665)	(480)
Provision for (recovery of) income taxes	(143)		(74)	(360)	(299)
Reported net income (loss)	(118)		(25)	(305)	(181)
Average Assets	159,682		82,734	129,399	82,778
Corporate services [member] | Impaired Loans [Member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses			1	2	(5)
Corporate services [member] | Performing loans [member]
Disclosure of operating segments [line items]
Provision for (recovery of) credit losses	$ 7		$ (5)	$ 8	$ (5)

Legal Proceedings - Disclosure

Legal Proceedings - Disclosure of Legal Proceedings Explanatory (Detail) $ in Millions	May 31, 2019CAD ($)
BMO Nesbitt Burns Inc., BMO InvestorLine Inc. and BMO Trust Company [Member]
Disclosure of contingent liabilities [line items]
Legal proceedings, class action claimed various monetary awards	$ 419

Acquisition - Additional Inform

Acquisition - Additional Information (Detail) $ in Millions, $ in Millions	Apr. 06, 2020CAD ($)	Jul. 31, 2020CAD ($)	Apr. 06, 2020USD ($)
Bottom of range [member]
Disclosure of business acquisitions by acquisition assets acquired and liabilities assumed [line items]
Amortization period	3 years
Top of range [member]
Disclosure of business acquisitions by acquisition assets acquired and liabilities assumed [line items]
Amortization period	12 years
Clearpool Group Inc [Member]
Disclosure of business acquisitions by acquisition assets acquired and liabilities assumed [line items]
Acquisition of the business	$ 196	$ 207	$ 139
Acquired intangible assets	85
Acquired goodwill	138
Contingent consideration	$ 11		$ 8

Acquisition - Summary of Fair V

Acquisition - Summary of Fair Value of Assets Acquired and Liabilities Assumed at The Date of Acquisition (Detail) - Clearpool Group Inc [Member] $ in Millions, $ in Millions	Jul. 31, 2020CAD ($)	Apr. 06, 2020CAD ($)	Apr. 06, 2020USD ($)
Disclosure of business acquisitions by acquisition assets acquired and liabilities assumed [line items]
Goodwill and intangible assets	$ 223
Other assets	44
Total assets	267
Liabilities	60
Purchase price	$ 207	$ 196	$ 139