UBS (UBS) 6-K 21 Jul 20 2020 Q2 Current report (foreign) Financial data

Document and Entity Information

Document and Entity Information	6 Months Ended
	Jun. 30, 2020
Entity Information [Line Items]
Entity registrant name	UBS Group AG
Entity central index key	0001610520
Current fiscal year end date	--12-31
Document type	6-K
Document period end date	Jun. 30, 2020
Amendment flag	false
Document fiscal year focus	2020
Document fiscal period focus	Q2

Consolidated Income Statement

Consolidated Income Statement - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Line Items]
Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		$ 2,133	$ 2,455	$ 2,749	$ 4,588	$ 5,419
Interest expense from financial instruments measured at amortized cost		(1,092)	(1,385)	(1,955)	(2,478)	(3,840)
Net interest income from financial instruments measured at fair value through profit or loss		351	261	232	612	571
Net interest income		1,392	1,330	1,026	2,722	2,149
Other net income from financial instruments measured at fair value through profit or loss		1,932	1,807	1,939	3,738	3,874
Credit loss (expense) / recovery		(272)	(268)	(12)	(540)	(33)
Fee and commission income	[1]	4,729	5,477	4,907	10,207	9,448
Fee and commission expense		(419)	(456)	(434)	(875)	(842)
Net fee and commission income		4,311	5,021	4,474	9,332	8,606
Other income		41	43	105	84	154
Total operating income		7,403	7,934	7,532	15,337	14,750
Personnel expenses		4,283	4,321	4,153	8,604	8,196
General and administrative expenses		1,063	1,133	1,175	2,196	2,362
Depreciation and impairment of property, equipment and software		458	456	427	914	854
Amortization and impairment of goodwill and intangible assets		17	16	18	32	33
Total operating expenses		5,821	5,926	5,773	11,747	11,445
Operating profit / (loss) before tax		1,582	2,008	1,759	3,591	3,305
Tax expense / (benefit)		347	410	366	757	773
Net profit / (loss)		1,236	1,598	1,393	2,833	2,532
Net profit / (loss) attributable to non-controlling interests		3	3	1	6	(1)
Net profit / (loss) attributable to shareholders		$ 1,232	$ 1,595	$ 1,392	$ 2,827	$ 2,533
Earnings per share
Basic		$ 0.34	$ 0.44	$ 0.38	$ 0.79	$ 0.69
Diluted		$ 0.33	$ 0.43	$ 0.37	$ 0.76	$ 0.67
[1]	Reflects third-party fee and commission income for the second quarter of 2020 of USD 2,809 million for Global Wealth Management (first quarter of 2020: USD 3,384 million; second quarter of 2019: USD 2,946 million), USD 313 million for Personal & Corporate Banking (first quarter of 2020: USD 354 million; second quarter of 2019: USD 327 million), USD 700 million for Asset Management (first quarter of 2020: USD 702 million; second quarter of 2019: USD 647 million), USD 872 million for the Investment Bank (first quarter of 2020: USD 1,004 million; second quarter of 2019: USD 962 million) and USD 36 million for Group Functions (first quarter of 2020: USD 33 million; second quarter of 2019: USD 25 million).

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020		Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement Of Comprehensive Income [Line Items]
Net profit / (loss)	$ 1,236	$ 1,598		$ 1,393	$ 2,833	$ 2,532
Net profit / (loss) attributable to shareholders	1,232	1,595		1,392	2,827	2,533
Net profit / (loss) attributable to non-controlling interests	3	3		1	6	(1)
Defined benefit plans
Subtotal defined benefit plans, net of tax					(347)	(171)
Own credit on financial liabilities designated at fair value
Subtotal own credit on financial liabilities designated at fair value, net of tax					62	(246)
Total comprehensive income
Total other comprehensive income	(1,026)	2,597		1,080	1,571	980
Total other comprehensive income that may be reclassified to the income statement, net of tax	345	1,515		1,006	1,860	1,399
Total other comprehensive income that will not be reclassified to the income statement, net of tax	(1,371)	1,082		74	(289)	(419)
Total comprehensive income	209	4,195		2,473	4,404	3,512
Comprehensive income attributable to shareholders
Statement Of Comprehensive Income [Line Items]
Net profit / (loss)					2,827	2,533
Foreign currency translation
Foreign currency translation movements related to net assets of foreign operations, before tax	458	(280)		302	178	145
Effective portion of changes in fair value of hedging instruments designated as net investment hedges, before tax	(197)	143		(122)	(54)	(96)
Foreign currency translation differences on foreign operations reclassified to the income statement	0	0		3	0	4
Effective portion of changes in fair value of hedging instruments designated as net investment hedges reclassified to the income statement	2	(8)		(13)	(7)	(13)
Income tax relating to foreign currency translations, including the effect of net investment hedges	(2)	0		(2)	(2)	0
Subtotal foreign currency translation, net of tax	261	(145)		168	116	40
Financial assets measured at fair value through other comprehensive income
Net unrealized gains / (losses), before tax	19	208		90	226	171
Realized gains reclassified to the income statement from equity	(15)	(9)		(2)	(24)	(3)
Realized losses reclassified to the income statement from equity	0	0		1	0	1
Income tax relating to net unrealized gains / (losses)	(3)	(51)		(24)	(54)	(41)
Subtotal financial assets measured at fair value through other comprehensive income, net of tax	1	147		65	149	128
Cash flow hedges of interest rate risk
Effective portion of changes in fair value of derivative instruments designated as cash flow hedges, before tax	291	1,953		987	2,244	1,575
Net (gains) / losses reclassified to the income statement from equity	(171)	(103)		(24)	(274)	(45)
Income tax relating to cash flow hedges	(25)	(345)		(191)	(370)	(298)
Subtotal cash flow hedges, net of tax	95	1,505		773	1,600	1,232
Cost of hedging
Change in fair value of cost of hedging, before tax	(18)	6			(12)
Amortization of initial cost of hedging to the income statement	5	2			7
Income tax relating to cost of hedging	0	0			0
Subtotal cost of hedging, net of tax	(13)	8			(4)
Defined benefit plans
Gains / (losses) on defined benefit plans, before tax	(420)	10	[1]	14	(410)	(148)
Income tax relating to defined benefit plans	(80)	143		(7)	63	(23)
Subtotal defined benefit plans, net of tax	(500)	153		8	(347)	(171)
Own credit on financial liabilities designated at fair value
Gains / (losses) from own credit on financial liabilities designated at fair value, before tax	(1,095)	1,156		72	62	(254)
Income tax relating to own credit on financial liabilities designated at fair value	223	(223)		0	0	8
Subtotal own credit on financial liabilities designated at fair value, net of tax	(872)	934		72	62	(246)
Total comprehensive income
Total other comprehensive income	(1,027)	2,602		1,086	1,575	982
Total other comprehensive income that may be reclassified to the income statement, net of tax	345	1,515		1,006	1,860	1,399
Total other comprehensive income that will not be reclassified to the income statement, net of tax	(1,372)	1,086		80	(286)	(417)
Total comprehensive income	205	4,197		2,478	4,402	3,515
Comprehensive income attributable to non-controlling interests
Statement Of Comprehensive Income [Line Items]
Net profit / (loss)					6	(1)
Foreign currency translation
Foreign currency translation movements related to net assets of foreign operations, before tax	1	(5)		(6)	(4)	(2)
Income tax relating to foreign currency translations, including the effect of net investment hedges	0	0		0	0	0
Subtotal foreign currency translation, net of tax	1	(5)		(6)	(4)	(2)
Total comprehensive income
Total other comprehensive income	1	(5)		(6)	(4)	(2)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	1	(5)		(6)	(4)	(2)
Total comprehensive income	$ 4	$ (2)		$ (5)	$ 3	$ (3)
[1]	Includes a net pre-tax OCI gain of USD 247 million related to UK defined benefit plans (driven by a decrease in the defined benefit obligation, mainly resulting from a higher discount rate), largely offset by a net pre-tax OCI loss of USD 242 million related to the Swiss pension plan (driven by an extraordinary employer contribution of USD 235 million that increased the gross plan assets, but led to an OCI loss as no net pension asset could be recognized on the balance sheet as of 31 March 2020 due to the asset ceiling). Refer to “Note 29 Pension and other post-employment benefit plans” in the “Consolidated financial statements” section of the Annual Report 2019 for more information about the effects from changes to the Swiss pension plan and the measures to mitigate them

Consolidated Statement of Com_2

Consolidated Statement of Comprehensive Income (Parenthetical) $ in Millions	3 Months Ended
	Mar. 31, 2020USD ($)
Swiss pension plan
Statement Of Comprehensive Income [Line Items]
Gains / (losses) on defined benefit plans, before tax	$ (242)
Extraordinary employer contribution	235
UK pension plan
Statement Of Comprehensive Income [Line Items]
Gains / (losses) on defined benefit plans, before tax	$ 247

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash and balances at central banks		$ 149,549	$ 139,258	$ 107,068
Loans and advances to banks		15,633	16,972	12,447
Receivables from securities financing transactions		85,271	89,648	84,245
Cash collateral receivables on derivative instruments		30,846	39,545	23,289
Loans and advances to customers		344,652	337,551	326,786
Other financial assets measured at amortized cost		27,253	23,765	22,980
Total financial assets measured at amortized cost		653,205	646,739	576,815
Financial assets at fair value held for trading		98,046	90,490	127,514
of which: assets pledged as collateral that may be sold or repledged by counterparties		38,505	31,192	41,285
Derivative financial instruments	[1],[2],[3]	152,008	212,982	121,841
Brokerage receivables		19,848	20,319	18,007
Financial assets at fair value not held for trading		94,292	82,753	83,944
Total financial assets measured at fair value through profit or loss		364,194	406,544	351,307
Financial assets measured at fair value through other comprehensive income		8,624	7,653	6,345
Investments in associates		1,054	1,042	1,051
Property, equipment and software		12,875	12,764	12,804
Goodwill and intangible assets		6,414	6,407	6,469
Deferred tax assets		9,294	9,316	9,537
Other non-financial assets		8,177	7,634	7,856
Total assets		1,063,838	1,098,099	972,183
Liabilities
Amounts due to banks		12,410	18,822	6,570
Payables from securities financing transactions		12,019	12,867	7,778
Cash collateral payables on derivative instruments		36,882	45,649	31,415
Customer deposits		474,254	465,946	448,284
Debt issued measured at amortized cost	[4]	126,744	115,432	110,497
Other financial liabilities measured at amortized cost		9,699	9,934	9,712
Total financial liabilities measured at amortized cost		672,007	668,649	614,256
Financial liabilities at fair value held for trading		34,426	32,571	30,591
Derivative financial instruments	[1],[2],[3]	152,280	206,649	120,880
Brokerage payables designated at fair value		40,248	37,652	37,233
Debt issued designated at fair value		58,864	53,299	66,809
Other financial liabilities designated at fair value		37,902	31,536	35,940
Total financial liabilities measured at fair value through profit or loss		323,721	361,707	291,452
Provisions		2,601	2,566	2,974
Other non-financial liabilities		8,302	7,059	8,794
Total liabilities		1,006,630	1,039,981	917,476
Equity
Share capital		338	338	338
Share premium		17,125	17,633	18,064
Treasury shares		(3,592)	(3,636)	(3,326)
Retained earnings		35,991	36,796	34,154
Other comprehensive income recognized directly in equity, net of tax		7,173	6,818	5,303
Equity attributable to shareholders		57,035	57,949	54,533
Equity attributable to non-controlling interests		173	169	174
Total equity		57,207	58,118	54,707
Total liabilities and equity		$ 1,063,838	$ 1,098,099	$ 972,183
[1]	Derivative financial liabilities as of 30 June 2020 include USD 35 million related to derivative loan commitments (31 March 2020: USD 43 million; 31 December 2019: USD 17 million). No notional amounts related to these commitments are included in this table, but they are disclosed in Note 17, under Loan commitments
[2]	Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS or its counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously
[3]	Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The fair value of these derivative instruments was not material for any periods presented. No notional amounts related to these instruments are included in this table, but they are disclosed in Note 17, under Forward starting transactions.
[4]	Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Total	Share capital	Share premium		Treasury shares		Retained earnings		Other comprehensive income recognized directly in equity, net of tax	[1]	of which: foreign currency translation	of which: financial assets measured at fair value through other comprehensive income	of which: cash flow hedges	of which: cost of hedging	Total equity attributable to shareholders	Non-controlling interests
Balance before the adoption of IFRIC 23 at Dec. 31, 2018	$ 53,103	$ 338	$ 20,843		$ (2,631)		$ 30,448		$ 3,930		$ 3,924	$ (103)	$ 109		$ 52,928	$ 176
Balance at Dec. 31, 2018	53,092	338	20,843		(2,631)		30,437		3,930		3,924	(103)	109		52,917	176
Issuance of share capital	0	0													0
Acquisition of treasury shares	(1,180)				(1,180)	[2]									(1,180)
Delivery of treasury shares under share-based compensation plans	59		(853)		912										59
Other disposal of treasury shares	55		(2)		57	[2]									55
Premium on shares issued and warrants exercised	29		29												29
Share-based compensation expensed in the income statement	342		342												342
Tax (expense) / benefit	13		13												13
Dividends	(2,550)		(2,544)	[3]											(2,544)	(6)
Equity classified as obligation to purchase own shares	(18)		(18)												(18)
Translation effects recognized directly in retained earnings	0						(5)		5				5		0
New consolidations / (deconsolidations) and other increases / (decreases)	(5)		(7)												(7)	3
Total comprehensive income for the period	3,512						2,116		1,399		40	128	1,232		3,515	(3)
of which: net profit / (loss)	2,532						2,533								2,533	(1)
of which: other comprehensive income (OCI) that may be reclassified to the income statement, net of tax	1,399								1,399		40	128	1,232		1,399
of which: OCI that will not be reclassified to the income statement, net of tax - defined benefit plans	(171)						(171)								(171)
of which: OCI that will not be reclassified to the income statement, net of tax - own credit	(246)						(246)								(246)
of which: OCI that will not be reclassified to the income statement, net of tax - foreign currency translation	(2)														0	(2)
Balance at Jun. 30, 2019	53,350	338	17,802		(2,843)		32,548		5,335		3,964	25	1,346		53,180	170
Balance at Dec. 31, 2019	54,707	338	18,064		(3,326)		34,154		5,303		4,028	14	1,260		54,533	174
Total comprehensive income for the period	4,195														4,197	(2)
of which: net profit / (loss)	1,598
of which: other comprehensive income (OCI) that may be reclassified to the income statement, net of tax	1,515														1,515
of which: OCI that will not be reclassified to the income statement, net of tax - defined benefit plans															153
of which: OCI that will not be reclassified to the income statement, net of tax - own credit															934
Balance at Mar. 31, 2020	58,118
Balance at Dec. 31, 2019	54,707	338	18,064		(3,326)		34,154		5,303		4,028	14	1,260		54,533	174
Issuance of share capital	0														0
Acquisition of treasury shares	(1,008)				(1,008)	[2]									(1,008)
Delivery of treasury shares under share-based compensation plans	52		(602)		655										52
Other disposal of treasury shares	79		(8)		87	[2]									79
Premium on shares issued and warrants exercised	0														0
Share-based compensation expensed in the income statement	313		313												313
Tax (expense) / benefit	13		13												13
Dividends	(1,312)		(654)	[3]			(654)	[3]							(1,308)	(4)
Translation effects recognized directly in retained earnings	0						(11)		11			0	11		0
Share of changes in retained earnings of associates and joint ventures	(40)						(40)								(40)
New consolidations / (deconsolidations) and other increases / (decreases)	0		0												0	0
Total comprehensive income for the period	4,404						2,542		1,860		116	149	1,600	$ (4)	4,402	3
of which: net profit / (loss)	2,833						2,827								2,827	6
of which: other comprehensive income (OCI) that may be reclassified to the income statement, net of tax	1,860								1,860		116	149	1,600	(4)	1,860
of which: OCI that will not be reclassified to the income statement, net of tax - defined benefit plans	(347)						(347)								(347)
of which: OCI that will not be reclassified to the income statement, net of tax - own credit	62						62								62
of which: OCI that will not be reclassified to the income statement, net of tax - foreign currency translation	(4)														0	(4)
Balance at Jun. 30, 2020	57,207	338	17,125		(3,592)		35,991		7,173		4,144	163	2,871	(4)	57,035	173
Balance at Mar. 31, 2020	58,118
Total comprehensive income for the period	209														205	4
of which: net profit / (loss)	1,236
of which: other comprehensive income (OCI) that may be reclassified to the income statement, net of tax	345														345
of which: OCI that will not be reclassified to the income statement, net of tax - defined benefit plans															(500)
of which: OCI that will not be reclassified to the income statement, net of tax - own credit															(872)
Balance at Jun. 30, 2020	$ 57,207	$ 338	$ 17,125		$ (3,592)		$ 35,991		$ 7,173		$ 4,144	$ 163	$ 2,871	$ (4)	$ 57,035	$ 173
[1]	Excludes other comprehensive income related to defined benefit plans and own credit that is recorded directly in Retained earnings
[2]	Includes treasury shares acquired and disposed of by the Investment Bank in its capacity as a market-maker with regard to UBS shares and related derivatives, and to hedge certain issued structured debt instruments. These acquisitions and disposals are reported based on the sum of the net monthly movements.
[3]	Reflects the payment of an ordinary cash dividend of USD 0.365 (2019: CHF 0.70) per dividend-bearing share. From 2020 onward, Swiss tax law effective 1 January 2020 requires Switzerland-domiciled companies with shares listed on a stock exchange pay no more than 50% of dividends from capital contribution reserves, with the remainder required to be paid from retained earnings.

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Equity (Parenthetical) $ in Millions	Dec. 31, 2018USD ($)	Jun. 30, 2020$ / shares	Jun. 30, 2019SFr / shares
Effect of adoption of IFRIC 23	$ (11)
Ordinary cash dividends paid, ordinary shares per share | (per share)		$ 0.365	SFr 0.7
Maximum percentage of dividends that may be paid from capital contribution reserves		50.00%
Retained earnings
Effect of adoption of IFRIC 23	(11)
Total equity attributable to shareholders
Effect of adoption of IFRIC 23	$ (11)

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Cash flow from / (used in) operating activities
Net profit / (loss)		$ 2,833	$ 2,532
Non-cash items included in net profit and other adjustments:
Depreciation and impairment of property, equipment and software		914	854
Amortization and impairment of intangible assets		32	33
Credit loss expense / (recovery)		540	33
Share of net profits of associates / joint ventures and impairment of associates		(29)	(25)
Deferred tax expense / (benefit)		192	394
Net loss / (gain) from investing activities		241	11
Net loss / (gain) from financing activities		(7,048)	5,998
Other net adjustments		(579)	(466)
Net change in operating assets and liabilities:
Loans and advances to banks / amounts due to banks		5,585	(1,158)
Securities financing transactions		3,167	(840)
Cash collateral on derivative instruments		(2,046)	2,396
Loans and advances to customers		(14,222)	(750)
Customer deposits		20,429	10,734
Financial assets and liabilities at fair value held for trading and derivative financial instruments		38,734	(9,009)
Brokerage receivables and payables		1,140	(1,564)
Financial assets at fair value not held for trading, other financial assets and liabilities		(7,168)	(6,721)
Provisions, other non-financial assets and liabilities		(1,531)	(375)
Income taxes paid, net of refunds		(403)	(429)
Net cash flow from / (used in) operating activities		40,781	1,649
Cash flow from / (used in) investing activities
Purchase of subsidiaries, associates and intangible assets		(1)	(5)
Disposal of subsidiaries, associates and intangible assets		14	100
Purchase of property, equipment and software		(831)	(782)
Disposal of property, equipment and software		6	8
Purchase of financial assets measured at fair value through other comprehensive income		(4,132)	(1,757)
Disposal and redemption of financial assets measured at fair value through other comprehensive income		1,944	1,160
Net (purchase) / redemption of debt securities measured at amortized cost		(4,817)	653
Net cash flow from / (used in) investing activities		(7,817)	(623)
Cash flow from / (used in) financing activities
Net short-term debt issued / (repaid)		14,912	(14,248)
Net movements in treasury shares and own equity derivative activity		(882)	(1,044)
Distributions paid on UBS shares		(1,308)	(2,544)
Repayment of lease liabilities	[1]	(273)
Issuance of long-term debt, including debt issued designated at fair value		46,059	31,471
Repayment of long-term debt, including debt issued designated at fair value		(46,137)	(25,931)
Net changes in non-controlling interests		(4)	(6)
Net cash flow from / (used in) financing activities		12,368	(12,301)
Total cash flow
Cash and cash equivalents at the beginning of the period		119,873	126,079
Net cash flow from / (used in) operating, investing and financing activities		45,332	(11,275)
Effects of exchange rate differences on cash and cash equivalents		1,563	613
Cash and cash equivalents at the end of the period	[2]	166,768	115,417
Net cash flow from / (used in) operating activities includes:
Interest received in cash		6,365	7,792
Interest paid in cash		4,200	6,039
Dividends on equity investments, investment funds and associates received in cash		$ 1,104	$ 1,243
[1]	In 2019, cash payments for the principal portion of the lease liability were classified within operating activities under Financial assets at fair value not held for trading, other financial assets and liabilities
[2]	USD 5,393 million and USD 3,161 million of cash and cash equivalents (mainly reflected in Loans and advances to banks) were restricted as of 30 June 2020 and 30 June 2019, respectively. Refer to “Note 26 Restricted and transferred financial assets” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.

Consolidated Statement ot Cash

Consolidated Statement ot Cash Flows (Parenthetical) - USD ($) $ in Millions		Jun. 30, 2020	Jun. 30, 2019
Statement Of Cash Flows [Line Items]
Restricted cash and cash equivalents		$ 5,393	$ 3,161
Cash and balances at central banks classified as cash equivalents	[1]	149,430	101,341
Loans and advances to banks classified as cash equivalents		14,428	12,108
Money market paper classified as cash equivalents		$ 2,911	$ 1,968
[1]	Includes only balances with an original maturity of three months or less.

Significant accounting policies

Significant accounting policies	3 Months Ended
	Jun. 30, 2020
Disclosure Significant Accounting Policies [Line Items]
Significant accounting policies	Note 1 Basis of accounting Basis of preparation The consolidated financial statements (the financial statements) of UBS Group AG and its subsidiaries (together, “UBS” or the “Group”) are prepared in accordance with International Financial Reporting Standards (IFRS), as issued by the International Accounting Standards B oard ( the IASB), and are presented in US dollars (USD), which is also the functional currency of UBS Group AG, UBS AG’s Head Office, UBS’s US-based operations and UBS AG London Branch . These interim financial statements are prepared in accordance with IAS 34, Interim Financial Reporting . In preparing these interim financial statements, the same accounting policies and methods of computation have been applied as in the UBS Group AG consolidated annual financial statements for the period ended 31 December 201 9, except for the changes described in this Note. These interim financial statements are unaudited and should be read in conjunction with UBS Group AG’s audited consolidated financial statements included in the Annual Report 2019. In the opinion of managem ent, all necessary adjustments were made for a fair presentation of the Group’s financial position, results of operations and cash flows. Preparation of these interim financial statements requires management to make estimates and assumptions that affect t he reported amounts of assets, liabilities, income, expenses and disclosures of contingent assets and liabilities. These estimates and assumptions are based on the best available information. Actual results in the future could differ from such estimates an d such differences may be material to the financial statements. Revisions to estimates, based on regular reviews, are recognized in the period in which they occur. For more information about areas of estimation uncertainty that are considered to require cr itical judgment, refer to “Note 1a Significant accounting policies” in the “Consolidated financial statements” section of the Annual Report 2019.

Changes in accounting policies,

Changes in accounting policies, comparability and adjustments	3 Months Ended
	Jun. 30, 2020
Changes In Accounting Policies Comparability And Adjustments [Line Items]
Disclosure of voluntary change in accounting policy	Presentation of interest income and expense from financial instruments measured at fair value through profit or loss Effective from 1 January 2020, UBS presents interest income and interest expense from financial instruments measured at fair value through profit or loss on a net basis in its Income Statement , in line with how UBS assesses and manages interest and in accordance with IFRS . This presentation change has no effect on Net interest income or on Net profit attributable to shareholders. Prior periods have been aligned with this change in presentation . Further information about net interest income from financial instruments measured at fair value through profit or loss is provided in Note 3. Segment reportin g Effective from 1 January 2020, UBS only reports total operating expenses for each business division and no longer discloses a detailed cost breakdown by financial statement line item within its Segment reporting disclosures provided in Note 2. This chang e streamlines reporting, ensures alignment with how UBS manages its cost base and has no effect on the Income Statement, or on the net profit of any business division .
Changes in accounting policies, comparability and adjustments	Adoption of hedge accounting requirements of IFRS 9, Financial Instruments Application and transition effect Effective from 1 January 2020, UBS has prospectively adopted the hedge accounting requirements of IFRS 9 with respect to all of its existing hedge accounting programs, except for fair value hedges of portfolio interest rate risk, whic h, as permitted under IFRS 9, continue to be accounted for under IAS 39, Financial Instruments: Recognition and Measurement . IFRS 9’s hedge accounting model further aligns accounting with risk management practices, amends hedge effectiveness requirements and prohibits voluntary de-designations. IFRS 9 permits the designation of certain additional hedged items, including layer components, net positions, and aggregated exposures, such as a combination of a non-derivative and derivative. IFRS 9 also introduces the concept of “cost of hedging,” under which the time value of an optio n contract, the forward element of a forward contract or the foreign currency basis spread in a cross-currency swap can be deferred in other comprehensive income and, depending on the nature of the hedged transaction, released to the income statement eithe r when the hedged item affects the income statement or over the term of the hedged item. The adoption of these requirements had no financial impact on UBS’s financial statements. However, the adoption allows UBS to designate more effective hedge accounting relationships, including fair value hedges of foreign currency risk using cross-currency swaps, and to reduce income statement volatility caused by foreign currency basis spread. Starting from 1 January 2020, UBS has been utilizing the concept of “cost of hedging” in its newly designated fair value hedge program of foreign currency debt using cross-currency swaps. The hedged risk is determined as changes in the value of the hedged items arising solely from changes in spot foreign exchange rates. The foreig n currency basis spread in cross-currency swaps is excluded from the hedge designation and accounted for through other comprehensive income as a cost of hedging. As of 30 June 2020 , the notional of hedging instruments and hedged items designated in the pro gram amounted to USD 13.7 billion, with a gain of USD 9 million deferred in other comprehensive income as a cost of hedging. Update to significant accounting policy – Hedge accounting (disclosed in “ Note 1a item 3j Hedge accounting ” in the financial statements 2019 included in the Annual Report 2019) Hedge accounting under IFRS 9 The Group applies hedge ac counting requirements of IFRS 9 for fair value hedges of interest rate risk related to debt instruments, fair value hedges of foreign exchange risk related to debt instruments, cash flow hedges of forecast transactions and hedges of net investments in foreign operations. At the time a financial instrument is designated in a hedge relationship, UBS formally documents the relationship between the hedging instrument(s) and hedged item(s), including the risk management objectives and strategy in undertaking the hedge transaction, the nature of risk being hedged and the methods that will be used to assess whether the hedge effectiveness criteria are met. As part of effectiveness testing, UBS assesses, both at the inception of the hedge and on an ongoing basis, whether there is an economic rel ationship between the hedged item and the hedging instrument , including whether the relationship is dominated by the effect of credit risk and whether the appropriate hedge ratio is being used. In the case of hedging forecast transactions, the forecast tra nsaction must be highly probable to occur. UBS discontinues hedge accounting when: (i) the hedge effectiveness criteria have ceased to be met; (ii) the derivative expires or is sold, terminated or exercised; (iii) the hedged item matures, is sold or repaid ; (iv) forecast transactions are no longer deemed to meet the highly probable criteria ; or (v) the risk management objective on the basis of which the hedge relationship was designated changes. Voluntary discontinuation of hedge accounting is not permitted . Hedge ineffectiveness represents the amount by which the changes in the fair value of the hedging instrument differ from changes in the fair value of the hedged item attributable to the hedged risk, or the amount by which changes in the present value of future cash flows of the hedging instrument exceed changes in the present value of expected cash flows of the hedged item. Such ineffectiveness is reco rded in Other net income from financial instruments measured at fair value through profit or loss . Fair value hedges of interest rate risk related to debt instruments In fair value hedges of interest rate risk, the fair value change of the hedged item attr ibutable to the hedged risk is reflected as an adjustment to the carrying value of the hedged item and recognized in the income statement along with the change in the fair value of the hedging instrument . If the hedge accounting relationship is terminated for reasons other than derecognition of the hedged item, the adjustment to the carrying value is amortized to the income statement over the remaining term to maturity of the hedged item using the effective interest rate method. Fair value hedges of foreign exchange risk related to debt instruments In fair value hedges of foreign currency risk, the fair value change of the hedge d item attributable to the hedged risk is reflected in the measurement of the hedge d item and recognized in the income statement along with the change in the fair value of the hedging instrument . The foreign currency basis spread of cross-curr ency swaps designated as hedging derivatives is excluded from the designation of fair value hedges of foreign currency risk. UBS has chosen to account for the foreign currency basis as a cost of hedging with amounts deferred in Other comprehensive income with in Equity . These amounts are released to the income statement over the term of the hedged item or upon discontinuation of the hedge relationship. Cash flow hedges of forecast transactions Fair value gains or losses associated with the effective portion of derivatives designated as cash flow hedges for cash flow repricing risk are recognized initially in Other comprehensive income within Equity. When the hedged forecast cash flows affect profit or loss, the associated gains or losses on the hedging derivatives are reclassified from Equity to the income statement and are presented in Interest income from derivative instruments designated as cash flow hedges within I nterest income from financial instruments measured at amortized cost and fair value through other comprehensive income . If a cash flow hedge of forecast transactions is no longer considered effective, or if the hedge relationship is termi nated, the cumulative gains or losses on the hedging derivatives previously reported in Other comprehensive income within Equity remain there until the committed or forecast transactions occur and affect profit or loss. If the forecast transactions are no longer expected to occur, the deferred gains or losses are immediately reclassified to the income statement. Hedges of net investments in foreign operations Hedges of net investments in foreign operations are accounted for similarly to cash flow hedges. Ga ins or losses on the hedging instrument relating to the effective portion of the hedge are recognized directly in Other comprehensive income within Equity , whil e any gains or losses relating to the ineffective and/or undesignated portion (for example, the interest element of a forward contract) are recognized in the income statement. Upon disposal or partial disposal of the foreign operation, the cumulative value of any such gains or losses recognized in Equity associated with the entity is reclassified to Other income . Hedge accounting under IAS 39 As permitted under IFRS 9, the Group continues to apply hedge accounting requirements of IAS 39 to fair value hedges of portfolio interest rate risk related to loans. As a result, the hedge accounting policy set out in the UBS Group AG consolidated financial statements included in the Annual Report 2019 continues to apply to this program.
IFRSs and interpretations to be adopted and other adjustments	Annual Improvements to IFRS Standards 2018–2020 Cycle and n arrow - s cope a mendments to IFRS 3 , Business Combinations , and I A S 37 , Provisions, Contingent Liabilities and Contingent Assets In May 2020, the IASB issued several narrow - scope amendments to a number of standards as well as the Annual Improvements to IFRS Standards 2018 – 2020 Cycle. These minor amend ments are effective from 1 January 2022. UBS is currently assessing the impact on the Group’s financial statements . Amendment to IFRS 16, Leases , (COVID-19 - Related Rent Concessions) In May 2020, the IASB issued an amendment to IFRS 16 to provide an option for lessees to account for rent concessions occurring as a direct consequence of the COVID-19 pandemic as if they were not lease modifications. The amendment is effective from 1 June 2020. UBS has not adopted th is option , given that the effects on the Grou p’s financial statements are not material.

Segment reporting

Segment reporting	3 Months Ended
	Jun. 30, 2020
Disclosure Of Operating Segments [Line Items]
Disclosure Of Entitys Reportable Segments Explanatory	Note 2 Segment reporting UBS’s businesses are organized globally into four business divisions: Global Wealth Management, Personal & Corporate Banking, Asset Management and the Investment Bank. All four business divisions are supported by Group Functions and qualify as reportable segments for the purpose of segment reporting. Together with Group Functions they reflect the management st ructure of the Group .  Refer to “Note 1a Significant accounting policies item 2” and “Note 2 Segment reporting” in the “Consolidated financial statements” s ection of the Annual Report 2019 for more information about the Group’s reporting segments USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS For the six months ended 30 June 2020 Net interest income 2,054 1,029 (9) 3 (354) 2,722 Non-interest income 6,553 886 1,048 4,914 (246) 13,155 Income 8,606 1,914 1,038 4,917 (600) 15,877 Credit loss (expense) / recovery (117) (187) 0 (200) (35) (540) Total operating income 8,489 1,727 1,038 4,718 (635) 15,337 Total operating expenses 6,391 1,155 724 3,396 80 11,747 Operating profit / (loss) before tax 2,098 572 314 1,321 (715) 3,591 Tax expense / (benefit) 757 Net profit / (loss) 2,833 As of 30 June 2020 Total assets 327,218 209,851 34,865 349,266 142,638 1,063,838 USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS For the six months ended 30 June 2019 Net interest income 1,975 994 (13) (403) (403) 2,149 Non-interest income 6,090 920 934 4,264 425 12,633 Income 8,064 1,914 921 3,860 23 14,783 Credit loss (expense) / recovery (4) 1 0 (24) (6) (33) Total operating income 8,061 1,915 921 3,836 17 14,750 Total operating expenses 6,323 1,139 693 3,202 88 11,445 Operating profit / (loss) before tax 1,737 777 228 634 (71) 3,305 Tax expense / (benefit) 773 Net profit / (loss) 2,532 As of 31 December 2019 Total assets 309,766 209,405 34,565 315,855 102,592 972,183

Net interest income

Net interest income	3 Months Ended
	Jun. 30, 2020
Disclosure Net Interest Income [Line Items]
Disclosure Net Interest Income Explanatory	Note 3 Net interest income For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income Interest income from loans and deposits 1 1,632 1,868 2,065 3,500 4,088 Interest income from securities financing transactions 2 202 367 545 569 1,044 Interest income from other financial instruments measured at amortized cost 87 89 83 176 179 Interest income from debt instruments measured at fair value through other comprehensive income 35 17 27 52 52 Interest income from derivative instruments designated as cash flow hedges 178 113 29 290 55 Total interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 2,133 2,455 2,749 4,588 5,419 Interest expense on loans and deposits 3 244 463 737 707 1,404 Interest expense on securities financing transactions 4 224 219 324 443 612 Interest expense on debt issued 596 676 863 1,272 1,761 Interest expense on lease liabilities 27 28 31 56 63 Total interest expense from financial instruments measured at amortized cost 1,092 1,385 1,955 2,478 3,840 Total net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 1,041 1,069 794 2,110 1,579 Net interest income from financial instruments measured at fair value through profit or loss Net interest income from financial instruments at fair value held for trading 242 201 325 442 759 Net interest income from brokerage balances 182 137 43 318 120 Net interest income from securities financing transactions at fair value not held for trading 5 18 33 27 51 57 Interest income from other financial instruments at fair value not held for trading 153 202 233 355 453 Interest expense on other financial instruments designated at fair value (244) (311) (396) (555) (819) Total net interest income from financial instruments measured at fair value through profit or loss 351 261 232 612 571 Total net interest income 1,392 1,330 1,026 2,722 2,149 1 Consists of interest income from cash and balances at central banks, loans and advances to banks and customers, and cash collateral receivables on derivative instruments, as well as negative interest on amounts due to banks, customer deposits, and cash collateral payables on derivative instruments. 2 Includes interest income on receivables from securities financing transactions and negative interest, including fees, on payables from securities financing transactions. 3 Consists of interest expense on amounts due to banks, cash collateral payables on derivative instruments, and customer deposits, as well as negative interest on cash and balances at central banks, loans and advances to banks, and cash collateral receivables on derivative instruments. 4 Includes interest expense on payables from securities financing transactions and negative interest, including fees, on receivables from securities financing transactions. 5 Includes interest expense on securities financing transactions designated at fair value.

Net fee and commission income

Net fee and commission income	3 Months Ended
	Jun. 30, 2020
Net fee And Commission Income [Line Items]
Disclosure Of Fee And Commission Income Expense Explanatory	Note 4 Net fee and commission income For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Fee and commission income Underwriting fees 257 200 224 456 379 of which: equity underwriting fees 123 106 118 230 166 of which: debt underwriting fees 133 93 105 227 212 M&A and corporate finance fees 117 218 296 335 413 Brokerage fees 959 1,245 826 2,204 1,654 Investment fund fees 1,197 1,295 1,196 2,492 2,373 Portfolio management and related services 1,813 2,059 1,915 3,872 3,719 Other 387 461 451 848 911 Total fee and commission income 1 4,729 5,477 4,907 10,207 9,448 of which: recurring 2,980 3,341 3,136 6,320 6,134 of which: transaction-based 1,674 2,098 1,749 3,773 3,264 of which: performance-based 75 39 23 114 50 Fee and commission expense Brokerage fees paid 63 86 88 149 168 Distribution fees paid 144 156 142 300 284 Other 212 214 203 426 390 Total fee and commission expense 419 456 434 875 842 Net fee and commission income 4,311 5,021 4,474 9,332 8,606 of which: net brokerage fees 896 1,158 738 2,055 1,486 1 Reflects third-party fee and commission income for the second quarter of 2020 of USD 2,809 million for Global Wealth Management (first quarter of 2020: USD 3,384 million; second quarter of 2019: USD 2,946 million), USD 313 million for Personal & Corporate Banking (first quarter of 2020: USD 354 million; second quarter of 2019: USD 327 million), USD 700 million for Asset Management (first quarter of 2020: USD 702 million; second quarter of 2019: USD 647 million), USD 872 million for the Investment Bank (first quarter of 2020: USD 1,004 million; second quarter of 2019: USD 962 million) and USD 36 million for Group Functions (first quarter of 2020: USD 33 million; second quarter of 2019: USD 25 million).

Other income

Other income	3 Months Ended
	Jun. 30, 2020
Other Income [Line Items]
Disclosure Of Other Operating Income Explanatory	Note 5 Other income For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Associates, joint ventures and subsidiaries Net gains / (losses) from acquisitions and disposals of subsidiaries 1 (2) 8 10 7 11 Net gains / (losses) from disposals of investments in associates 0 0 0 0 4 Share of net profits of associates and joint ventures 13 16 10 29 25 Impairments related to associates 0 0 (1) 0 (1) Total 11 25 20 36 39 Net gains / (losses) from disposals of financial assets measured at fair value through other comprehensive income 15 9 1 24 2 Income from properties 2 6 7 7 13 13 Net gains / (losses) from properties held for sale 9 0 7 9 7 Other 0 3 70 3 92 Total other income 41 43 105 84 154 1 Includes foreign exchange gains / (losses) reclassified from other comprehensive income related to the disposal or closure of foreign operations. 2 Includes rent received from third parties.

Personnel expenses

Personnel expenses	3 Months Ended
	Jun. 30, 2020
Personnel Expenses [Line Items]
Disclosure Of Employee Benefits Explanatory	Note 6 Personnel expenses For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Salaries and variable compensation 2,696 2,561 2,523 5,258 4,943 Financial advisor compensation 1 941 1,094 1,005 2,035 1,965 Contractors 91 84 96 176 192 Social security 228 211 195 439 408 Pension and other post-employment benefit plans 202 236 194 438 418 Other personnel expenses 123 135 140 258 269 Total personnel expenses 4,283 4,321 4,153 8,604 8,196 1 Financial advisor compensation consists of grid-based compensation based directly on compensable revenues generated by financial advisors and supplemental compensation calculated on the basis of financial advisor productivity, firm tenure, assets and other variables. It also includes expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements.

General and administrative expe

General and administrative expenses	3 Months Ended
	Jun. 30, 2020
General And Administrative Expenses [Line Items]
Disclosure Of General And Administrative Expense Explanatory	Note 7 General and administrative expenses For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Occupancy 101 97 91 198 188 Rent and maintenance of IT and other equipment 185 198 168 382 353 Communication and market data services 152 149 157 301 312 Administration 115 148 103 263 226 of which: UK and German bank levies 3 15 (32) 17 (17) Marketing and public relations 1 65 50 72 115 138 Travel and entertainment 31 69 100 101 190 Professional fees 163 160 193 323 370 Outsourcing of IT and other services 228 235 259 463 530 Litigation, regulatory and similar matters 2 2 6 4 8 (4) Other 23 20 28 43 60 Total general and administrative expenses 1,063 1,133 1,175 2,196 2,362 1 Includes charitable donations. 2 Reflects the net increase in / (release of) provisions for litigation, regulatory and similar matters recognized in the income statement. Refer to Note 16 for more information. Also includes recoveries from third parties (second quarter of 2020: USD 0 million; first quarter of 2020: USD 1 million; second quarter of 2019: USD 1 million).

Income taxes

Income taxes	3 Months Ended
	Jun. 30, 2020
Income Taxes [Line Items]
Disclosure Of Income Tax Explanatory	Note 8 Income taxes The Group recognized income tax expenses of USD 347 million for the second quarter of 2020, representing an effective tax rate of 21.9%, compared with USD 366 million for the second quarter of 2019. Current tax expenses were USD 343 million, compared with USD 209 million, and related to taxable profits of UBS Switzerland AG and other entities. Deferred tax expenses were USD 4 million, compared with USD 157 million. These included expenses of USD 68 million in respect of the amortization of deferred tax assets (DTAs) previously recognized in relation to tax losses carried forward and deductible temporary differences , which primarily relate to UBS Americas Inc. Deferred tax expenses were decreased by a benefit of USD 31 million in respect of additional DTA recognition that resulted from the contribution of real estate assets by UBS AG to UBS Americas Inc. and UBS Financial Services Inc. in the second quarter of 2020. The additional DTA recognition related to the elections that were made in the fourth quarter of 2018 to capitalize certain historic real estate costs. This amount repres ents one half of the expected full - year benefit and, therefore, further amounts totaling USD 31 million will be recognized in the third and fourth quarters of 2020 in accordance with the requirements of IAS 34, Interim Financial Reporting . Deferred tax exp enses were also decreased by a benefit of USD 33 million in respect of an increase in temporary difference DTAs as the expected value of future tax deductions for deferred compensation awards increased .

Earnings per share (EPS) and sh

Earnings per share (EPS) and shares outstanding	3 Months Ended
	Jun. 30, 2020
Earnings Per Share And Shares Outstanding [Line Items]
Disclosure of earnings per share and shares outstanding [text block]	Note 9 Earnings per share (EPS) and shares outstanding As of or for the quarter ended As of or year-to-date 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Basic earnings (USD million) Net profit / (loss) attributable to shareholders 1,232 1,595 1,392 2,827 2,533 Diluted earnings (USD million) Net profit / (loss) attributable to shareholders 1,232 1,595 1,392 2,827 2,533 Less: (profit) / loss on own equity derivative contracts 0 0 0 0 0 Net profit / (loss) attributable to shareholders for diluted EPS 1,232 1,595 1,392 2,827 2,533 Weighted average shares outstanding Weighted average shares outstanding for basic EPS 1 3,584,522,015 3,591,853,051 3,694,660,679 3,588,187,534 3,694,529,827 Effect of dilutive potential shares resulting from notional shares, in-the-money options and warrants outstanding 106,543,728 114,911,986 95,817,338 110,717,626 101,297,249 Weighted average shares outstanding for diluted EPS 3,691,065,743 3,706,765,037 3,790,478,017 3,698,905,160 3,795,827,076 Earnings per share (USD) Basic 0.34 0.44 0.38 0.79 0.69 Diluted 0.33 0.43 0.37 0.76 0.67 Shares outstanding and potentially dilutive instruments Shares issued 3,859,055,395 3,859,055,395 3,859,055,395 3,859,055,395 3,859,055,395 Treasury shares 271,876,346 274,964,517 199,121,101 271,876,346 199,121,101 Shares outstanding 3,587,179,049 3,584,090,878 3,659,934,294 3,587,179,049 3,659,934,294 Potentially dilutive instruments 2 27,456,453 29,801,232 27,263,830 26,911,953 27,239,110 1 The weighted average shares outstanding for basic EPS are calculated by taking the number of shares at the beginning of the period, adjusted by the number of shares acquired or issued during the period, multiplied by a time-weighted factor for the period outstanding. As a result, balances are affected by the timing of acquisitions and issuances during the period. 2 Reflects potential shares that could dilute basic earnings per share in the future, but were not dilutive for the periods presented. It mainly includes equity derivative contracts.

Expected credit loss measuremen

Expected credit loss measurement	3 Months Ended
	Jun. 30, 2020
Disclosure Of Provision Matrix [Line Items]
Disclosure Of Provision Matrix Explanatory	Note 10 Expected credit loss measurement a) E xpected credit losses in the period Total net credit loss expenses were USD 272 million during the second quarter of 2020, reflecting net expenses of USD 202 million related to stage 1 and 2 positions and net expenses of USD 70 million related to credit-impaired (stage 3) positions. Stage 1 and 2 net credit loss expenses of USD 202 million were primarily driven by a net expense of USD 127 million from an update to the forward-looking scenarios, factoring in updated macroeconomic assumptions to reflect the effects of the COVID-19 pandemic , in particular updated GDP and unemployment assumptions . This also led to exposure movements from stage 1 to stage 2 as probabilities of default increased . The remaining stage 1 and 2 expenses of USD 75 million mainly reflect the effects of expert judgement overlays for select ed exposures to Swiss large corporate s and small and medium-sized entities , as well as remeas urements within our loan book, mainly in the Investment Bank. These were partly offset by recoveries on energy-related exposures and securities financing transactions with a number of real estate investment trusts , where we had increased allowances in the first qu arter of 2020 . Stage 3 net credit loss expenses were USD 70 million. In the Investment Bank, stage 3 net expenses of USD 22 million were driven by USD 38 million of expenses recognized across various positions, partly offset by recoveries on securit ies financing transactions with a number of real estate investment trusts , where we had increased allowances in the first quarter of 2020 . In Group Functions, stage 3 expenses of USD 20 million arose from an energy-related exposure in the Non-core and Legacy Portfolio. In Global Wealth Management, stage 3 net expenses of USD 19 million primarily reflected USD 9 million on a single structured margin - lending position, with the remaining USD 10 million on a number of smaller positions across the portfolios. In Pe rsonal & Corporate Banking, s tage 3 net expenses of USD 10 million arose primarily on two newly defaulted clients in the corporate lending portfolio . b) Changes to ECL models, scenarios, scenario weights and key inputs The outlook for the global economy has deteriorated markedly since the end of 2019 as a result of the COVID-19 outbreak. C OVID -19 and related lockdown measures have significantly impacted major economies across the world. Uncertainties are still at a high level , making predictions difficult and displaying several potential triggers for further negative developments. S cenarios and scenario weights For the second quarter of 2020, the two scenarios and related macroeconomic factors that were applied in the first quarter of 2020 were reviewed in light of the economic and political conditions prevailing at 30 June 2020 through a series of extraordinary gov ernance meetings, with input from UBS risk and finance experts across the regions and business divisions. The key aspects of the narratives for the scenarios are summarized below. – The baseline scenario was updated for 30 June 2020 and takes into account a significant deterioration of GDP in relevant markets. GDP in the US and Switzerland is expected to decline by around 6. 4 % and 5.5% , respectively , in 2020 – this reflects a very significant drop in the first half of 2020 and an expected sequential rebound of about 4% and 8% , respectively , in the second half of the year. The Eurozone also experiences a very severe contraction in economic activity in 2020, with a n 8.2% dec line in GDP. In addition, t he baseline reflects the sharp increase in unemployment observed in the first half of 2020, with unemployment expected to remain at around 14% in the US and to rise to just below 4% in Switzerland by the end of 2020. Housing prices are assumed to be largely flat in Switzerland but to decrease in the US, by around 4% over the two years 2020 and 2021 in cumulative terms. Overall, economic improvements are expected to take place in 2021, with GDP expected to increase by around 4% in both the US and Switzerland. – The global crisis scenario ( also known as the severe downside scenario) was updated during the second quarter of 2020 to account for updated market data and the impact of the COVID-19 outbreak . The scenario assumptions are considered to be consistent with assumptions for COVID-19 - related disruption but to a significantly more adverse degree than what is considered under the baseline scenario , with a full - year GDP contraction expected to continue into 2021 and only a moderate recovery starting from the end of 2021. Relative to their values at the end of the first quarter of 2020 and considering the period until the end of the first quarter of 2021, GDP is assumed to decline by more than 11% in both the US and Switzerland and unemployment to remain elevated, with a peak above 17% and 6% in the US and Switzerland, respectively. Housing prices also decline significantly, by almost 14% and 20% in the US and Switzerland , respectively . – Given the evolving pandemic, management assessed in the first quarter of 2020 whether an interim review of the upside (asset price inflation) and mild downside (monetary-tightening) scenarios, both of which were applied at the end of 2019, would be warranted, as these scenarios became less probable in the specific circumstances. This assessment was reviewed during the second qu arter of 2020 and , consistent with the first quarter, management agreed that the upside and the mild downside narratives should remain in place, as they may become relevant again once there is more clarity on COVID-19 ; however, their probability weights should be temporarily set to zero given ( i ) there are too many uncertainties and lack of supportable information on precedent cases that could be used for modeling narratives and economic shock factors, and (ii) the probability weight estimation would have b een speculative. This assessment will be reviewed in the third quarter of 2020 . Baseline Key parameters 2020 2021 Real GDP growth (annual % change, annual average) United States (6.4) 4.5 Eurozone (8.2) 6.2 Switzerland (5.5) 4.4 Unemployment rate (annual %, level, 4Q average) United States 14.1 7.8 Eurozone 9.8 6.6 Switzerland 3.9 3.4 Real estate (annual % change, 4Q average) United States (2.8) (1.6) Eurozone (10.2) 8.6 Swiss Single-Family Homes (0.2) 0.5 As a consequence of the exceptional circumstances and prevailing uncertainties at the end of the second quarter of 2020, UBS decided to keep the weight allocation consistent with the decision made in the first quarter of 2020, with a 70% weighting assigned to the baseline and a 30% weighting assigned to the global crisis scenario. Ov erall, these weights still reflect the current sentiment regarding the boundaries of economic outcomes, with a bias toward the updated baseline scenario, but give sufficient credence to the global crisis scenario, thereby accounting for the prospect that t he pandemic may not be contained effectively. E c onomic scenarios and weights applied ECL scenario Assigned weights in % 30.6.20 31.3.20 31. 12 . 19 Upside 0.0 0.0 7.5 Baseline 70.0 70.0 42.5 Mild downside 0.0 0.0 35.0 Global crisis 30.0 30.0 15.0 Sensitivity to different scenario weight combinations and ”pro forma all-stage-2” measurement E xpected credit loss (E CL ) is sensitive to changing scenario weights, in particular if narratives and parameters are selected that are not close to the baseline s cenario, highlighting the non-linearity of credit losses. UBS reported USD 636 million of ECL allowances and provisions for stage 1 or 2 positions at the end of the second quarter of 2020. If UBS had applied a 100% weight to the baseline scenario or 100% w eight to the global crisis scenario, ECL allowances and provisions would have been approximately USD 0.5 billion and USD 1. 2 b illion , respectively. A s a way of compar ing IFRS 9 to its US GAAP equivalent standard, i f all stage 1 and 2 positions across the p ortfolio had been measured for lifetime ECL irrespective of whether there was a significant increase in credit risk ( SICR ) status , with a 70% weight applied to the baseline and 30% to the global crisis scenario , ECL allowances and provisions for positions not subject to credit-impairment would have been approximately USD 1. 5 billion . c) ECL-relevant balance sheet and off-balance sheet positions including ECL allowances and provisions The tables set out below and on the following pages provide information about financial instruments and certain non-financial instruments that are subject to ECL. For amortized-cost i nstruments, the carrying amount represents the maximum exposure to credit risk, taking into account the allowance for credit losses. Financial assets measured at fair value through other comprehensive income (FVOCI) are also subject to ECL; however, unlike amortized-cost instruments, the allowance for credit losses for FVOCI instruments does not reduce the carrying value of these financial assets. Rather, the carrying value of financial assets measured at FVOCI represents the maximum exposure to credit risk . In addition to on-balance sheet financial assets, certain off-balance sheet and other credit lines are also subject to ECL. The maximum exposure to credit risk for off-balance sheet financial instruments is calculated based on the maximum contractual amo unts. USD million 30.6.20 Carrying amount 1,2 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 149,549 149,549 0 0 0 0 0 0 Loans and advances to banks 15,633 15,534 99 0 (6) (4) (1) (1) Receivables from securities financing transactions 85,271 85,271 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 30,846 30,846 0 0 (1) (1) 0 0 Loans and advances to customers 344,652 318,977 23,673 2,002 (1,089) (134) (236) (719) of which: Private clients with mortgages 137,563 128,527 8,076 960 (157) (25) (93) (39) of which: Real estate financing 40,653 34,083 6,559 11 (55) (10) (42) (4) of which: Large corporate clients 14,376 11,148 2,962 266 (308) (34) (58) (217) of which: SME clients 13,518 7,845 5,177 496 (319) (21) (29) (269) of which: Lombard 116,482 116,292 0 191 (71) (11) 0 (60) of which: Credit cards 1,396 1,065 304 26 (35) (9) (11) (15) of which: Commodity trade finance 3,194 3,155 30 9 (83) (5) 0 (78) Other financial assets measured at amortized cost 27,253 26,107 404 741 (151) (40) (10) (100) of which: Loans to financial advisors 2,673 2,090 201 382 (116) (34) (7) (74) Total financial assets measured at amortized cost 653,205 626,286 24,176 2,743 (1,249) (181) (247) (821) Financial assets measured at fair value through other comprehensive income 8,624 8,624 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 661,829 634,910 24,176 2,743 (1,249) (181) (247) (821) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 16,313 14,768 1,369 176 (47) (11) (4) (32) of which: Large corporate clients 3,494 2,640 733 121 (8) (3) (3) (3) of which: SME clients 1,293 725 514 54 (25) (1) (1) (24) of which: Financial intermediaries and hedge funds 6,964 6,910 54 0 (6) (6) 0 0 of which: Lombard 602 602 0 0 (1) 0 0 (1) of which: Commodity trade finance 1,601 1,583 18 0 (1) (1) 0 0 Irrevocable loan commitments 39,651 34,494 5,044 114 (121) (57) (64) 0 of which: Large corporate clients 23,167 18,284 4,838 45 (109) (50) (59) 0 Forward starting reverse repurchase and securities borrowing agreements 2,210 2,210 0 0 0 0 0 0 Committed unconditionally revocable credit lines 37,822 32,892 4,870 60 (65) (34) (32) 0 of which: Real estate financing 5,666 5,019 647 0 (25) (4) (21) 0 of which: Large corporate clients 4,356 3,482 856 18 (9) (4) (5) 0 of which: SME clients 4,980 2,962 1,984 34 (17) (14) (4) 0 of which: Lombard 9,410 9,410 0 0 (1) (1) 0 0 of which: Credit cards 8,159 7,726 425 8 (10) (7) (2) 0 Irrevocable committed prolongation of existing loans 4,265 4,240 25 1 (7) (7) 0 0 Total off-balance sheet financial instruments and other credit lines 100,262 88,604 11,307 351 (240) (108) (100) (32) Total allowances and provisions (1,489) (289) (346) (853) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. 2 The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs. USD million 31.3.20 Carrying amount 1 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 139,258 139,258 0 0 0 0 0 0 Loans and advances to banks 16,972 16,894 78 0 (6) (4) (1) (1) Receivables from securities financing transactions 89,648 88,394 449 804 (34) (2) (15) (16) Cash collateral receivables on derivative instruments 39,545 39,545 0 0 0 0 0 0 Loans and advances to customers 337,551 320,740 14,896 1,914 (936) (101) (164) (671) of which: Private clients with mortgages 134,759 126,633 7,168 957 (111) (17) (55) (39) of which: Real estate financing 39,097 33,876 5,205 16 (49) (6) (39) (4) of which: Large corporate clients 15,343 14,328 849 166 (191) (21) (35) (134) of which: SME clients 11,943 10,453 1,036 455 (358) (18) (20) (320) of which: Lombard 114,401 114,144 0 258 (56) (10) 0 (46) of which: Credit cards 1,317 985 308 23 (34) (7) (14) (14) of which: Commodity trade finance 2,801 2,778 13 10 (82) (5) 0 (77) Other financial assets measured at amortized cost 23,765 22,820 410 536 (143) (31) (15) (97) of which: Loans to financial advisors 2,699 2,198 303 198 (112) (25) (13) (73) Total financial assets measured at amortized cost 646,739 627,651 15,833 3,255 (1,120) (139) (195) (786) Financial assets measured at fair value through other comprehensive income 7,653 7,653 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 654,392 635,305 15,833 3,255 (1,120) (139) (195) (786) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,830 17,387 361 83 (76) (8) (1) (66) of which: Large corporate clients 3,742 3,471 244 26 (33) (1) 0 (32) of which: SME clients 1,308 1,185 67 56 (28) 0 0 (27) of which: Financial intermediaries and hedge funds 7,965 7,949 16 0 (5) (5) 0 0 of which: Lombard 603 603 0 0 (7) 0 0 (7) of which: Commodity trade finance 1,967 1,951 16 0 (1) (1) 0 0 Irrevocable loan commitments 28,334 27,701 550 84 (46) (34) (13) 0 of which: Large corporate clients 18,224 17,712 453 59 (33) (26) (7) 0 Forward starting reverse repurchase and securities borrowing agreements 5,123 5,123 0 0 0 0 0 0 Committed unconditionally revocable credit lines 34,487 33,509 942 35 (36) (20) (16) 0 of which: Real estate financing 4,989 4,679 310 0 (16) (3) (12) 0 of which: Large corporate clients 3,784 3,697 70 17 (2) (1) 0 0 of which: SME clients 4,644 4,492 133 18 (10) (9) (1) 0 of which: Lombard 7,649 7,649 0 0 0 (1) 0 0 of which: Credit cards 8,295 7,923 371 0 (5) (4) (2) 0 Irrevocable committed prolongation of existing loans 4,040 4,038 0 2 (4) (4) 0 0 Total off-balance sheet financial instruments and other credit lines 89,814 87,757 1,852 204 (162) (66) (29) (66) Total allowances and provisions (1,282) (205) (225) (852) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,447 12,367 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 326,786 309,499 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 22,980 21,953 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 576,815 558,420 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 583,159 564,765 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 85,728 83,626 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. The table below provides information about the ECL gross exposure and the ECL coverage ratio for our core loan portfolios: Loans and advances to customers, Other financial assets measured at amortized cost and relevant Off-balance sheet exposures. Cash and balances at cen tral banks, Loans and advances to banks, Receivables from securities financing transactions, Cash collateral receivables on derivative instruments, and Financial assets measured at fair value through other comprehensive income are not included in the table below due to their lower sensitivity to ECL. ECL coverage ratios are calculated by taking ECL allowances and provisions divided by the gross carrying amount of the exposures. ECL coverage ratios for core loan portfolios 30.6.20 Gross carrying amount (USD million) 1 ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 345,741 319,111 23,909 2,721 32 4 99 2,643 of which: Private clients with mortgages 137,720 128,552 8,169 1,000 11 2 113 394 of which: Real estate financing 40,708 34,093 6,601 15 14 3 63 2,541 of which: Large corporate clients 14,684 11,182 3,020 483 210 30 191 4,488 of which: SME clients 13,837 7,866 5,206 765 231 27 55 3,520 of which: Lombard 116,554 116,303 0 251 6 1 0 2,403 of which: Credit cards 1,430 1,074 315 41 242 81 354 3,569 of which: Commodity trade finance 3,278 3,160 30 87 254 15 8 8,973 Other financial assets measured at amortized cost 27,404 26,148 414 842 55 15 241 1,194 of which: Loans to financial advisors 2,789 2,124 208 456 415 161 347 1,627 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 16,313 14,768 1,369 176 29 7 27 1,831 Irrevocable loan commitments 39,651 34,494 5,044 114 31 16 128 0 Committed unconditionally revocable credit lines 37,822 32,892 4,870 60 17 10 65 0 Irrevocable committed prolongation of existing loans 4,265 4,240 25 1 16 16 15 0 1 The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs. 31.3.20 Gross carrying amount (USD million) ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 338,486 320,841 15,060 2,585 28 3 109 2,596 of which: Private clients with mortgages 134,870 126,650 7,224 996 8 1 77 390 of which: Real estate financing 39,146 33,881 5,245 20 12 2 75 2,047 of which: Large corporate clients 15,534 14,349 885 300 123 15 401 4,476 of which: SME clients 12,301 10,470 1,055 775 291 17 188 4,129 of which: Lombard 114,457 114,154 0 303 5 1 0 1,508 of which: Credit cards 1,351 993 322 37 254 72 420 3,708 of which: Commodity trade finance 2,882 2,783 13 87 283 18 1 8,818 Other financial assets measured at amortized cost 23,908 22,850 425 633 60 13 360 1,531 of which: Loans to financial advisors 2,811 2,224 317 271 397 114 418 2,702 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,830 17,387 361 83 42 5 30 8,045 Irrevocable loan commitments 28,334 27,701 550 84 16 12 228 0 Committed unconditionally revocable credit lines 34,487 33,509 942 35 11 6 168 0 Irrevocable committed prolongation of existing loans 4,040 4,038 0 2 10 10 0 0 31.12.19 Gross carrying amount (USD million) ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 327,550 309,581 15,661 2,308 23 3 79 2,420 of which: Private clients with mortgages 132,756 124,077 7,679 1,000 8 1 72 406 of which: Real estate financing 38,524 32,937 5,567 21 11 2 62 1,765 of which: Large corporate clients 9,819 9,199 429 192 119 16 100 5,088 of which: SME clients 12,089 9,834 1,464 791 251 18 104 3,420 of which: Lombard 112,915 112,799 0 116 2 0 0 1,566 of which: Credit cards 1,696 1,322 339 35 205 60 404 3,718 of which: Commodity trade finance 2,925 2,831 8 87 278 17 3 8,844 Other financial assets measured at amortized cost 23,123 21,988 463 672 62 16 274 1,420 of which: Loans to financial advisors 2,987 2,370 344 272 366 122 305 2,570 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 23 4 30 4,032 Irrevocable loan commitments 27,547 27,078 419 50 13 11 120 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 10 5 143 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 8 8 0 0

Fair value measurement

Fair value measurement	3 Months Ended
	Jun. 30, 2020
Disclosure Of Fair Value Measurement [Line Items]
Disclosure Of Fair Value Measurement Explanatory	Note 11 Fair value measurement This Note provides fair value measurement information for both financial and non-financial instruments and should be read in conjunction with “Note 24 Fair value measurement” in the “Consolidated financial statements” section of the Annual Report 2019, whi ch provides more information about valuation principles, valuation governance, fair value hierarchy classification, valuation adjustments, valuation techniques and inputs, sensitivity of fair value measurements, and methods applied to calculate fair values for financial instruments not measured at fair value. All financial and non-financial assets and liabilities measured or disclosed at fair value are categorized into one of three fair value hierarchy levels. In certain cases, the inputs used to measure fa ir value may fall within different levels of the fair value hierarchy. For disclosure purposes, the level in the hierarchy within which the instrument is classified in its entirety is based on the lowest level input that is significant to the position’s fa ir value measurement: – Level 1 : quoted prices (unadjusted) in active markets for identical assets and liabilities; – Level 2 : valuation techniques for which all significant inputs are, or are based on, observable market data ; or – Level 3 : valuation techniques for which significant inputs are not based on observable market data . a) Fair value hierarchy The fair value hierarchy classification of financial and non-financial assets and liabilities measured at fair value is summarized in the table below. Determination of fair values from quoted market prices or valuation techniques 1 30.6.20 31.3.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial assets measured at fair value on a recurring basis Financial assets at fair value held for trading 82,057 13,279 2,710 98,046 73,693 14,779 2,018 90,490 113,634 12,068 1,812 127,514 of which: Equity instruments 64,174 710 76 64,960 54,966 535 185 55,686 96,161 400 226 96,787 Government bills / bonds 11,057 2,272 10 13,339 11,017 2,826 9 13,852 9,630 1,770 64 11,464 Investment fund units 6,282 1,744 27 8,053 7,077 1,556 21 8,654 7,088 1,729 50 8,867 Corporate and municipal bonds 537 7,296 779 8,612 618 8,230 498 9,346 755 6,617 542 7,914 Loans 0 980 1,600 2,580 0 1,205 1,120 2,325 0 1,180 791 1,971 Asset-backed securities 7 277 218 501 16 428 184 628 0 372 140 512 Derivative financial instruments 868 149,599 1,541 152,008 1,193 209,344 2,445 212,982 356 120,222 1,264 121,841 of which: Foreign exchange contracts 472 53,316 7 53,795 635 94,070 26 94,730 240 52,227 8 52,474 Interest rate contracts 25 55,147 330 55,502 20 55,398 418 55,836 6 42,288 263 42,558 Equity / index contracts 0 36,195 795 36,991 4 53,989 1,301 55,294 7 22,220 597 22,825 Credit derivative contracts 0 1,540 405 1,945 0 1,574 669 2,243 0 1,612 394 2,007 Commodity contracts 0 3,302 1 3,304 0 3,909 6 3,915 0 1,820 0 1,821 Brokerage receivables 0 19,848 0 19,848 0 20,319 0 20,319 0 18,007 0 18,007 Financial assets at fair value not held for trading 49,389 41,168 3,735 94,292 39,666 39,388 3,699 82,753 40,608 39,373 3,963 83,944 of which: Financial assets for unit-linked investment contracts 26,387 0 5 26,392 22,826 0 0 22,826 27,568 118 0 27,686 Corporate and municipal bonds 578 20,737 0 21,316 655 19,753 0 20,408 653 18,732 0 19,385 Government bills / bonds 22,175 4,540 0 26,714 15,954 3,853 0 19,808 12,089 3,700 0 15,790 Loans 0 8,317 1,024 9,340 0 8,390 1,081 9,470 0 10,206 1,231 11,438 Securities financing transactions 0 7,163 126 7,289 0 6,909 147 7,056 0 6,148 147 6,294 Auction rate securities 0 0 1,393 1,393 0 0 1,393 1,393 0 0 1,536 1,536 Investment fund units 188 396 103 688 138 395 107 641 194 448 98 740 Equity instruments 61 0 545 606 93 3 454 549 103 4 452 559 Other 0 13 540 553 0 84 518 602 0 16 499 515 Financial assets measured at fair value through other comprehensive income on a recurring basis Financial assets measured at fair value through other comprehensive income 1,551 7,074 0 8,624 1,651 6,002 0 7,653 1,906 4,439 0 6,345 of which: Asset-backed securities 0 6,634 0 6,634 0 5,507 0 5,507 0 3,955 0 3,955 Government bills / bonds 1,515 98 0 1,612 1,613 92 0 1,705 1,859 16 0 1,875 Corporate and municipal bonds 36 341 0 378 38 404 0 441 47 468 0 515 Non-financial assets measured at fair value on a recurring basis Precious metals and other physical commodities 4,890 0 0 4,890 4,050 0 0 4,050 4,597 0 0 4,597 Non-financial assets measured at fair value on a non-recurring basis Other non-financial assets 2 0 0 130 130 0 0 202 202 0 0 199 199 Total assets measured at fair value 138,755 230,968 8,116 377,839 120,253 289,832 8,364 418,449 161,101 194,110 7,237 362,448 Determination of fair values from quoted market prices or valuation techniques (continued) 1 30.6.20 31.3.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial liabilities measured at fair value on a recurring basis Financial liabilities at fair value held for trading 28,216 6,093 117 34,426 26,965 5,463 143 32,571 25,791 4,726 75 30,591 of which: Equity instruments 23,464 306 76 23,846 22,289 282 26 22,598 22,526 149 59 22,734 Corporate and municipal bonds 38 4,558 39 4,635 22 3,921 74 4,018 40 3,606 16 3,661 Government bills / bonds 4,052 770 0 4,822 3,880 710 0 4,590 2,820 646 0 3,466 Investment fund units 662 431 2 1,096 774 532 43 1,349 404 294 0 698 Derivative financial instruments 871 148,116 3,293 152,280 1,246 201,770 3,633 206,649 385 118,498 1,996 120,880 of which: Foreign exchange contracts 447 54,385 67 54,899 636 92,515 65 93,217 248 53,705 60 54,013 Interest rate contracts 7 49,048 838 49,894 6 49,776 892 50,674 7 36,434 130 36,571 Equity / index contracts 0 39,622 1,445 41,067 4 53,968 1,557 55,528 3 24,171 1,293 25,468 Credit derivative contracts 0 1,781 917 2,698 0 1,875 1,065 2,940 0 2,448 512 2,960 Commodity contracts 0 3,128 10 3,138 0 3,437 0 3,438 0 1,707 0 1,707 Financial liabilities designated at fair value on a recurring basis Brokerage payables designated at fair value 0 40,248 0 40,248 0 37,652 0 37,652 0 37,233 0 37,233 Debt issued designated at fair value 0 49,123 9,741 58,864 0 46,013 7,286 53,299 0 56,943 9,866 66,809 Other financial liabilities designated at fair value 0 36,757 1,145 37,902 0 30,309 1,227 31,536 0 35,119 822 35,940 of which: Financial liabilities related to unit-linked investment contracts 0 26,573 0 26,573 0 23,150 0 23,150 0 28,145 0 28,145 Securities financing transactions 0 8,371 0 8,371 0 5,992 0 5,992 0 5,742 0 5,742 Over-the-counter debt instruments 0 1,796 1,057 2,852 0 1,159 1,138 2,297 0 1,231 791 2,022 Total liabilities measured at fair value 29,087 280,337 14,296 323,721 28,211 321,207 12,289 361,707 26,176 252,518 12,759 291,452 1 Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented. 2 Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at fair value less costs to sell as a result of meeting the held-for-sale criteria. b) Valuation adjustments D eferred d ay-1 profit or loss reserves The table below summarizes the changes in deferred day-1 profit or loss reserves during the relevant period. Deferred day-1 profit or loss is generally released into Other net income from financial instruments measured at fair value through profit or loss when pricing of equivalent products or the underlying parameters become observable or when the transaction is closed out. Deferred day-1 profit or loss reserves For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Reserve balance at the beginning of the period 194 146 161 146 255 Profit / (loss) deferred on new transactions 121 118 58 239 90 (Profit) / loss recognized in the income statement (72) (69) (60) (141) (187) Foreign currency translation 0 (1) 0 (1) (1) Reserve balance at the end of the period 243 194 158 243 158 Own credit The valuation of financial liabilities designated at fair value requires consideration of the own credit component of fair value. Own credit risk is reflected in the valuation of UBS’s fair value option liabilities where this component is considered releva nt for valuation purposes by UBS’s counterparties and other market participants. However, own credit risk is not reflected in the valuation of UBS’s liabilities that are fully collateralized or for other obligations for which it is established market pract ice to not include an own credit component. The description of UBS ’ s methodology to estimate own credit and the related accounting principles is included in “Note 2 4 Fair value measurement” in the “Consolidated financial statements” section of the Annual R eport 201 9 . In the second quarter of 2020, other comprehensive income related to own credit on financial liabilities designated at fair value was negative USD 1,095 million, primarily due to a significant tightening of UBS ’ s credit spreads , which have largely returned to the levels observed prior to the COVID-19 pandemic . Own credit adjustments on financial liabilities designated at fair value Included in Other comprehensive income For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Recognized during the period: Realized gain / (loss) 8 1 6 9 6 Unrealized gain / (loss) (1,103) 1,156 66 53 (260) Total gain / (loss), before tax (1,095) 1,156 72 62 (254) As of USD million 30.6.20 31.3.20 30.6.19 Recognized on the balance sheet as of the end of the period: Unrealized life-to-date gain / (loss) (31) 1,069 60 Credit, funding, debit and other valuation adjustments A description of UBS ’ s methodology for estimat ing credit valuation adjustment s (CVA s ), funding valuation adjustments (FVA s ), debit valuation adjustments (DVA s ) and other valuation adjustments is included in “Note 2 4 Fair value measurement” in the “Consolidated financial statements” section of the Annual Report 201 9 . In the second quarter of 2020, CVA s and FVA s de creased due to the reversal of the significant w idening of credit and funding spreads observed in the fir st quarter of 2020 as a result of the economic effec t s of the COVID-19 pandemic. Other valuation adjustments for liquidity and model uncertainty also decreased , primarily due to smaller bid– offer spreads as markets stabilized during the second quarter of 2020 . Valuation adjustments on financial instruments As of Life-to-date gain / (loss), USD million 30.6.20 31.3.20 31.12.19 Credit valuation adjustments 1 (78) (92) (48) Funding valuation adjustments 2 (141) (378) (93) Debit valuation adjustments 1 2 1 Other valuation adjustments (715) (879) (566) of which: liquidity (385) (536) (300) of which: model uncertainty (330) (343) (266) 1 Amounts do not include reserves against defaulted counterparties. 2 Includes FVAs on structured financing transactions of USD 44 million as of 30 June 2020, USD 194 million as of 31 March 2020 and USD 43 million as of 31 December 2019. c) Transfers between Level 1 and Level The amounts disclosed in this section reflect transfers between Level 1 and Level 2 for instruments that were held for the entire reporting period. Assets and liabilities transferred from Level 2 to Level 1 during th e first six months of 2020, or from Level 1 to Level 2 during the first six months of 2020, were not material. d) Level 3 instruments: valuation techniques and inputs The table below presents significant Level 3 assets and liabilities together with the valuation techniques used to measure fair value, the significant inputs used in the valu ation technique that are considered unobservable and a range of values for those unobservable inputs. The range of values represents the highest- and lowest-level input s used in the valuation techniques. Therefore, the range does not reflect the level of u ncertainty regarding a particular input, but rather the different underlying characteristics of the relevant assets and liabilities. The ranges will therefore vary from period to period and parameter to parameter , based on characteristics of the instrument s held at each balance sheet date. Further more , the ranges and weighted averages of unobservable inputs may differ across other financial institutions due to the diversity of the products in each firm’s inventory. The significant unobservable inputs disclo sed in the table below are consistent with those included in “Note 2 4 Fair value measurement” in the “Consolidated financial statements” section of the Annual Report 201 9 . A description of the potential effect that a change in each unobservable input in isolation may have on a fair value measurement, including information to facilitate an understanding of factors that give rise to the input ranges shown, is also provided in “Note 2 4 Fair value measurement” in the “Consolidated financial statements” sectio n of the Annual Report 201 9 . Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 30.6.20 31.12.19 USD billion 30.6.20 31.12.19 30.6.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 0.8 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 0 143 101 0 143 101 points Traded loans, loans designated at fair value, loan commitments and guarantees 3.1 2.4 0.1 0.0 Relative value to market comparable Loan price equivalent 0 100 99 0 101 99 points Discounted expected cash flows Credit spread 250 1,000 225 530 basis points Market comparable and securitization model Discount margin 1 19 3 0 14 2 % Auction rate securities 1.4 1.5 Relative value to market comparable Bond price equivalent 79 91 80 79 98 88 points Investment fund units 3 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 3 0.6 0.7 0.1 0.1 Relative value to market comparable Price Debt issued designated at fair value 4 9.7 9.9 Other financial liabilities designated at fair value 1.1 0.8 Discounted expected cash flows Funding spread 44 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.3 0.3 0.8 0.1 Option model Volatility of interest rates 33 80 15 63 basis points Credit derivative contracts 0.4 0.4 0.9 0.5 Discounted expected cash flows Credit spreads (2) 558 1 700 basis points Bond price equivalent 0 113 0 100 points Equity / index contracts 0.8 0.6 1.4 1.3 Option model Equity dividend yields 0 14 0 14 % Volatility of equity stocks, equity and other indices 4 125 4 105 % Equity-to-FX correlation (45) 61 (45) 71 % Equity-to-equity correlation (17) 99 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts as this would not be meaningful. 3 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 4 Valuation techniques, significant unobservable inputs and the respective input ranges for Debt issued designated at fair value are the same as the equivalent derivative instruments presented elsewhere in this table. e) Level 3 instruments: sensitivity to changes in unobservable input assumptions The table below summarizes those financial assets and liabilities classified as Level 3 for which a change in one or more of the unobservable inputs to reflect reasonably possible alternative assumptions would change fair value significantly, and the estimated effect thereof. The table shown presents the favo rable and unfavorable effects for each class of financial assets and liabilities for which the potential change in fair value is considered significant. The sensitivity of fair value measurements for debt issued designated at fair value and over-the-counte r debt instruments designated at fair value is reported with the equivalent derivative or structured financing instrument within the table below . The sensitivity data shown below presents an estimation of valuation uncertainty based on reasonably possible alternative values for Level 3 inputs at the balance sheet date and does not represent the estimated effect of stress scenarios. Typically, these financial assets and liabilities are sensitive to a combination of inputs from Levels 1–3. Although well-defi ned interdependencies may exist between Levels 1–2 and Level 3 parameters (e.g., between interest rates, which are generally Level 1 or Level 2, and prepayments, which are generally Level 3), these have not been incorporated in the table. Furthermore, dire ct interrelationships between the Level 3 parameters are not a significant element of the valuation uncertainty. Sensitivity of fair value measurements to changes in unobservable input assumptions 1 30.6.20 31.3.20 31.12.19 USD million Favorable changes Unfavorable changes Favorable changes Unfavorable changes Favorable changes Unfavorable changes Traded loans, loans designated at fair value, loan commitments and guarantees 71 (83) 165 (209) 46 (21) Securities financing transactions 26 (26) 35 (33) 11 (11) Auction rate securities 105 (105) 105 (105) 87 (87) Asset-backed securities 45 (45) 42 (51) 35 (40) Equity instruments 160 (92) 150 (82) 140 (80) Interest rate derivative contracts, net 12 (23) 16 (20) 8 (17) Credit derivative contracts, net 6 2 (11) 2 34 (38) 31 (35) Foreign exchange derivative contracts, net 14 (8) 15 (13) 12 (8) Equity / index derivative contracts, net 351 (352) 362 (429) 183 (197) Other 35 (35) 48 (50) 47 (51) Total 824 (780) 972 (1,028) 600 (547) 1 Sensitivity of issued and over-the-counter debt instruments is reported with the equivalent derivative or securities financing instrument. 2 Includes refinements applied in estimating valuation uncertainty, resulting from a move to use issuer specific proxy credit default swap curves rather than generic curves. f) Level 3 instruments: movements during the period Significant changes in Level 3 instruments The table on the following pages presents additional information about significant Level 3 assets and liabilities measured at fair value on a recurring basis. Level 3 assets and liabilities may be hedged with instruments classified as Level 1 or Level 2 in the fair value hierarchy and, as a result, realized and unrealized gai ns and losses included in the table may not comprise the effect of related hedging activity. Furthermore, the realized and unrealized gains and losses presented within the table are not limited solely to those arising from Level 3 inputs, as valuations are generally derived from both observable and unobservable parameters. Movements of Level 3 instruments 1 Total gains / losses included in comprehensive income Total gains / losses included in comprehensive income USD billion Balance as of 31 December 2018 Net gains / losses included in income 2 of which: related to Level 3 instruments held at the end of the reporting period Purchases Sales Issuances Settlements Transfers into Level 3 Transfers out of Level 3 Foreign currency translation Balance as of 30 June 2019 Balance as of 31 December 2019 3 Net gains / losses included in income 2 of which: related to Level 3 instruments held at the end of the reporting period Purchases Sales Issuances Settlements Transfers into Level 3 Transfers out of Level 3 Foreign currency translation Balance as of 30 June 2020 3 Financial assets at fair value held for trading 2.0 (0.1) 0.0 0.3 (1.2) 0.8 0.0 0.2 (0.3) 0.0 1.6 1.8 (0.1) 0.0 0.3 (1.0) 1.4 0.0 0.3 0.0 0.0 2.7 of which: Investment fund units 0.4 0.0 0.0 0.0 (0.2) 0.0 0.0 0.1 (0.2) 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Corporate and municipal bonds 0.7 0.0 0.0 0.1 (0.2) 0.0 0.0 0.0 (0.1) 0.0 0.5 0.5 0.0 0.0 0.2 (0.2) 0.0 0.0 0.2 0.0 0.0 0.8 Loans 0.7 (0.1) 0.0 0.1 (0.7) 0.8 0.0 0.0 0.0 0.0 0.7 0.8 (0.1) 0.0 0.0 (0.6) 1.4 0.0 0.0 0.0 0.0 1.6 Other 0.2 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.3 0.4 0.0 0.0 0.0 (0.2) 0.0 0.0 0.1 0.0 0.0 0.3 Derivative financial instruments – assets 1.4 (0.2) (0.1) 0.0 0.0 0.3 (0.2) 0.2 (0.1) 0.0 1.5 1.3 0.3 0.4 0.0 0.0 0.5 (0.5) 0.0 (0.1) 0.0 1.5 of which: Interest rate contracts 0.4 (0.1) (0.1) 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.6 0.3 0.2 0.2 0.0 0.0 0.0 (0.2) 0.0 0.0 0.0 0.3 Equity / index contracts 0.5 (0.1) 0.0 0.0 0.0 0.1 0.0 0.1 (0.1) 0.0 0.4 0.6 0.0 0.1 0.0 0.0 0.5 (0.2) 0.0 (0.1) 0.0 0.8 Credit derivative contracts 0.5 0.0 0.0 0.0 0.0 0.1 (0.1) 0.0 0.0 0.0 0.5 0.4 0.1 0.1 0.0 0.0 0.0 (0.2) 0.0 0.0 0.0 0.4 Other 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Financial assets at fair value not held for trading 4.4 0.3 0.3 0.3 (0.4) 0.0 0.0 0.2 (0.9) 0.0 3.9 4.0 (0.1) (0.1) 0.5 (0.6) 0.0 0.0 0.1 0.0 0.0 3.7 of which: Loans 1.8 0.2 0.2 0.1 (0.1) 0.0 0.0 0.2 (0.9) 0.0 1.3 1.2 0.0 0.0 0.4 (0.5) 0.0 0.0 0.0 0.0 0.0 1.0 Auction rate securities 1.7 0.0 0.0 0.0 (0.1) 0.0 0.0 0.0 0.0 0.0 1.6 1.5 (0.1) (0.1) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.4 Equity instruments 0.5 0.1 0.1 0.0 (0.2) 0.0 0.0 0.0 0.0 0.0 0.5 0.5 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.5 Other 0.5 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.7 0.0 0.0 0.1 (0.1) 0.0 0.0 0.0 0.0 0.0 0.8 Derivative financial instruments – liabilities 2.2 0.0 (0.1) 0.0 0.0 0.2 (0.4) 0.1 (0.2) 0.0 1.9 2.0 1.2 1.1 0.0 0.0 0.5 (0.8) 0.6 (0.3) 0.0 3.3 of which: Interest rate contracts 0.2 (0.1) (0.1) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.1 0.7 0.7 0.0 0.0 0.0 (0.3) 0.3 0.0 0.0 0.8 Equity / index contracts 1.4 0.0 (0.1) 0.0 0.0 0.1 (0.3) 0.0 (0.2) 0.0 1.0 1.3 0.2 0.2 0.0 0.0 0.5 (0.4) 0.0 (0.2) 0.0 1.4 Credit derivative contracts 0.5 0.0 0.0 0.0 0.0 0.1 (0.1) 0.1 0.0 0.0 0.6 0.5 0.3 0.3 0.0 0.0 0.1 (0.1) 0.3 (0.1) 0.0 0.9 Other 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 Debt issued designated at fair value 11.0 0.4 0.4 0.0 0.0 3.9 (2.2) 0.3 (2.1) 0.0 11.4 9.9 0.2 0.3 0.0 0.0 3.9 (3.5) 0.4 (1.0) 0.0 9.7 Other financial liabilities designated at fair value 1.0 0.1 0.1 0.0 0.0 0.2 (0.7) 0.0 0.0 0.0 0.7 0.8 0.0 0.0 0.0 0.0 0.6 (0.3) 0.0 0.0 0.0 1.1 1 Effective 2020, UBS has enhanced its disclosure of Level 3 movements by excluding from the table the impacts of instruments purchased during the period and sold prior to the end of the period. Prior-period comparatives have been restated accordingly. 2 Net gains / losses included in comprehensive income are comprised of Net interest income, Other net income from financial instruments measured at fair value through profit or loss and Other income. 3 Total Level 3 assets as of 30 June 2020 were USD 8.1 billion (31 December 2019: USD 7.2 billion). Total Level 3 liabilities as of 30 June 2020 were USD 14.3 billion (31 December 2019: USD 12.8 billion). Assets and liabilities transferred into or out of Level 3 are presented as if those assets or liabilities had been transferred at the beginning of the yea r. Assets transferred into and out of Level 3 in the first six months of 2020 totaled USD 0 . 4 billion and USD 0 . 2 billion, respectively. Transfers into Level 3 mainly consisted of corporate and municipal bonds, reflecting decreased observability of the relevant valuation inputs. Liabilities transferred into and out of Level 3 in the first six months of 2020 totaled USD 1 . 0 billion and USD 1 . 3 billion, respectively. Transfers into Level 3 mainly consisted of debt issued designated at fair value , primarily credit -linked and equity-linked issued debt instruments, as well as credit and interest rate derivative contracts due to decreased observability of the relevant valuation inputs. Transfers out of Level 3 mainly consisted of debt issued designated at fair value, primarily equity-linked issued debt instruments, due to increased observability of the embedded derivative inputs . g) Financial instruments not measured at fair value The table below reflects the estimated fair values of financial instruments not measured at fair value. Financial instruments not measured at fair value 30.6.20 31.3.20 31.12.19 USD billion Carrying amount Fair value Carrying amount Fair value Carrying amount Fair value Assets Cash and balances at central banks 149.5 149.5 139.3 139.3 107.1 107.1 Loans and advances to banks 15.6 15.6 17.0 17.0 12.4 12.4 Receivables from securities financing transactions 85.3 85.3 89.6 89.7 84.2 84.2 Cash collateral receivables on derivative instruments 30.8 30.8 39.5 39.5 23.3 23.3 Loans and advances to customers 344.7 344.7 337.6 339.4 326.8 329.1 Other financial assets measured at amortized cost 27.3 27.8 23.8 24.5 23.0 23.2 Liabilities Amounts due to banks 12.4 12.4 18.8 18.8 6.6 6.6 Payables from securities financing transactions 12.0 12.0 12.9 12.9 7.8 7.8 Cash collateral payables on derivative instruments 36.9 36.9 45.6 45.6 31.4 31.4 Customer deposits 474.3 474.4 465.9 466.1 448.3 448.4 Debt issued measured at amortized cost 126.7 127.8 115.4 113.0 110.5 113.6 Other financial liabilities measured at amortized cost 1 5.8 5.8 6.1 6.1 5.8 5.7 1 Excludes lease liabilities. The fair values included in the table above have been calculated for disclosure purposes only. The fair value valuation techniques and assumptions relate only to the fair value of UBS’s financial instruments not measured at fair value. Other institutions m ay use different methods and assumptions for their fair value estimation, and therefore such fair value disclosures cannot necessarily be compared from one financial institution to another.

Derivative instruments

Derivative instruments	3 Months Ended
	Jun. 30, 2020
Derivative [Line Items]
Disclosure Of Derivative Financial Instruments Explanatory	Note 12 Derivative instruments a ) Derivative instruments As of 30.6.20, USD billion Derivative financial assets Notional values related to derivative financial assets 3 Derivative financial liabilities Notional values related to derivative financial liabilities 3 Other notional values 4 Derivative financial instruments 1,2 Interest rate contracts 55.5 910 49.9 887 11,797 Credit derivative contracts 1.9 66 2.7 68 0 Foreign exchange contracts 53.8 2,971 54.9 2,818 2 Equity / index contracts 37.0 376 41.1 474 105 Commodity contracts 3.3 66 3.1 58 11 Unsettled purchases of non-derivative financial instruments 5 0.3 32 0.2 12 Unsettled sales of non-derivative financial instruments 5 0.2 31 0.4 18 Total derivative financial instruments, based on IFRS netting 6 152.0 4,451 152.3 4,334 11,914 Further netting potential not recognized on the balance sheet 7 (138.1) (134.3) of which: netting of recognized financial liabilities / assets (112.3) (112.3) of which: netting with collateral received / pledged (25.8) (21.9) Total derivative financial instruments, after consideration of further netting potential 13.9 18.0 As of 31.3.20, USD billion Derivative financial instruments 1,2 Interest rate contracts 55.8 971 50.7 924 12,095 Credit derivative contracts 2.2 81 2.9 68 0 Foreign exchange contracts 94.7 3,413 93.2 3,221 2 Equity / index contracts 55.3 422 55.5 487 111 Commodity contracts 3.9 73 3.4 70 11 Unsettled purchases of non-derivative financial instruments 5 0.4 38 0.4 16 Unsettled sales of non-derivative financial instruments 5 0.5 39 0.5 22 Total derivative financial instruments, based on IFRS netting 6 213.0 5,037 206.6 4,807 12,219 Further netting potential not recognized on the balance sheet 7 (193.2) (186.6) of which: netting of recognized financial liabilities / assets (160.7) (160.7) of which: netting with collateral received / pledged (32.5) (25.9) Total derivative financial instruments, after consideration of further netting potential 19.8 20.1 As of 31.12.19, USD billion Derivative financial instruments 1,2 Interest rate contracts 42.6 1,007 36.6 961 11,999 Credit derivative contracts 2.0 70 3.0 70 0 Foreign exchange contracts 52.5 3,173 54.0 2,994 1 Equity / index contracts 22.8 420 25.5 534 122 Commodity contracts 1.8 56 1.7 60 13 Unsettled purchases of non-derivative financial instruments 5 0.1 17 0.1 7 Unsettled sales of non-derivative financial instruments 5 0.1 15 0.1 10 Total derivative financial instruments, based on IFRS netting 6 121.8 4,759 120.9 4,635 12,135 Further netting potential not recognized on the balance sheet 7 (110.7) (106.1) of which: netting of recognized financial liabilities / assets (89.3) (89.3) of which: netting with collateral received / pledged (21.4) (16.8) Total derivative financial instruments, after consideration of further netting potential 11.1 14.8 1 Derivative financial liabilities as of 30 June 2020 include USD 35 million related to derivative loan commitments (31 March 2020: USD 43 million; 31 December 2019: USD 17 million). No notional amounts related to these commitments are included in this table, but they are disclosed in Note 17, under Loan commitments. 2 Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The fair value of these derivative instruments was not material for any periods presented. No notional amounts related to these instruments are included in this table, but they are disclosed in Note 17, under Forward starting transactions. 3 In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional values of the netted derivative financial instruments are still presented on a gross basis. 4 Other notional values relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for any periods presented. 5 Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments. 6 Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. 7 Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information. Derivative financial assets decreased by USD 61 billion and derivative financial liabilities decreased by USD 54 billion compared with the first quarter of 2020, mainly reflecting roll - offs and market-driven movements in foreign exchange and equity / index contracts in our Derivatives & Solutions and Financing businesses in the Investment Bank. b) Cash collateral on derivative instruments USD billion Receivables 30.6.20 Payables 30.6.20 Receivables 31.3.20 Payables 31.3.20 Receivables 31.12.19 Payables 31.12.19 Cash collateral on derivative instruments, based on IFRS netting 1 30.8 36.9 39.5 45.6 23.3 31.4 Further netting potential not recognized on the balance sheet 2 (18.0) (20.1) (21.7) (24.2) (14.4) (18.1) of which: netting of recognized financial liabilities / assets (16.7) (18.3) (19.6) (21.8) (13.3) (16.5) of which: netting with collateral received / pledged (1.3) (1.8) (2.1) (2.4) (1.1) (1.7) Cash collateral on derivative instruments, after consideration of further netting potential 12.8 16.8 17.9 21.5 8.9 13.3 1 Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS or its counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. 2 Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.

Other assets and liabilities

Other assets and liabilities	3 Months Ended
	Jun. 30, 2020
Other Assets And Other Liabilities [Line Items]
Disclosure Of Other Assets And Other Liabilities Explanatory	Note 13 Other assets and liabilities a) Other financial assets measured at amortized cost USD million 30.6.20 31.3.20 31.12.19 Debt securities 19,062 14,118 14,141 of which: government bills / bonds 9,812 8,458 8,492 Loans to financial advisors 1 2,673 2,699 2,877 Fee- and commission-related receivables 1,650 2,094 1,521 Finance lease receivables 1,409 1,386 1,444 Settlement and clearing accounts 317 893 587 Accrued interest income 624 624 742 Other 1,518 1,951 1,669 Total other financial assets measured at amortized cost 27,253 23,765 22,980 1 Related to financial advisors in the US and Canada. b) Other non-financial assets USD million 30.6.20 31.3.20 31.12.19 Precious metals and other physical commodities 4,890 4,050 4,597 Bail deposit 1 1,300 1,273 1,293 Prepaid expenses 980 1,069 927 VAT and other tax receivables 374 384 493 Properties and other non-current assets held for sale 242 202 199 Other 390 657 346 Total other non-financial assets 8,177 7,634 7,856 1 Refer to item 1 in Note 16b for more information. c) Other financial liabilities measured at amortized cost USD million 30.6.20 31.3.20 31.12.19 Other accrued expenses 1,607 1,835 1,928 Accrued interest expenses 1,155 1,065 1,562 Settlement and clearing accounts 1,818 1,844 1,379 Lease liabilities 3,850 3,830 3,943 Other 1,268 1,360 900 Total other financial liabilities measured at amortized cost 9,699 9,934 9,712 d) Other financial liabilities designated at fair value USD million 30.6.20 31.3.20 31.12.19 Financial liabilities related to unit-linked investment contracts 26,573 23,150 28,145 Securities financing transactions 8,371 5,992 5,742 Over-the-counter debt instruments 2,852 2,297 2,022 Other 105 96 31 Total other financial liabilities designated at fair value 37,902 31,536 35,940 of which: life-to-date own credit (gain) / loss (64) (217) (4) e) Other non-financial liabilities USD million 30.6.20 31.3.20 31.12.19 Compensation-related liabilities 5,799 4,514 6,812 of which: Deferred Contingent Capital Plan 1,561 1,464 1,855 of which: financial advisor compensation plans 1,267 1,189 1,463 of which: other compensation plans 1,575 648 2,310 of which: net defined benefit pension and post-employment liabilities 771 629 633 of which: other compensation-related liabilities 1 624 585 552 Deferred tax liabilities 675 800 311 Current tax liabilities 875 705 852 VAT and other tax payables 518 575 475 Deferred income 249 219 141 Other 186 245 202 Total other non-financial liabilities 8,302 7,059 8,794 1 Includes liabilities for payroll taxes and untaken vacation.

Debt issued designated at fair

Debt issued designated at fair value	3 Months Ended
	Jun. 30, 2020
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Financial Instruments Designated At Fair Value Through Profit Or Loss Explanatory	Note 14 Debt issued designated at fair value USD million 30.6.20 31.3.20 31.12.19 Issued debt instruments Equity-linked 1 35,657 32,927 41,722 Rates-linked 13,694 12,898 16,318 Credit-linked 1,866 1,682 1,916 Fixed-rate 4,436 3,797 4,636 Commodity-linked 1,335 1,249 1,567 Other 1,876 746 649 of which: debt that contributes to total loss-absorbing capacity 1,220 259 217 Total debt issued designated at fair value 58,864 53,299 66,809 of which: issued by UBS AG with original maturity greater than one year 2 41,403 37,364 51,031 of which: life-to-date own credit (gain) / loss 95 (852) 92 1 Includes investment fund unit-linked instruments issued. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. 100% of the balance as of 30 June 2020 was unsecured (31 March 2020: 100% of the balance was unsecured; 31 December 2019: more than 99% of the balance was unsecured).

Debt issued measured at amortiz

Debt issued measured at amortized cost	3 Months Ended
	Jun. 30, 2020
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Debt Securities Explanatory	Note 15 Debt issued measured at amortized cost USD million 30.6.20 31.3.20 31.12.19 Certificates of deposit 16,401 9,246 5,190 Commercial paper 16,156 15,453 14,413 Other short-term debt 3,877 2,468 2,235 Short-term debt 1 36,434 27,167 21,837 Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC) 31,258 33,895 30,105 Senior unsecured debt other than TLAC 26,519 22,282 25,569 of which: issued by UBS AG with original maturity greater than one year 2 21,729 20,576 22,349 Covered bonds 2,605 2,570 2,633 Subordinated debt 21,130 20,917 21,775 of which: high-trigger loss-absorbing additional tier 1 capital instruments 11,041 10,902 11,931 of which: low-trigger loss-absorbing additional tier 1 capital instruments 2,491 2,464 2,414 of which: low-trigger loss-absorbing tier 2 capital instruments 7,063 7,017 6,892 of which: non-Basel III-compliant tier 2 capital instruments 534 534 540 Debt issued through the Swiss central mortgage institutions 8,795 8,597 8,574 Other long-term debt 3 3 4 Long-term debt 3 90,310 88,265 88,660 Total debt issued measured at amortized cost 4 126,744 115,432 110,497 1 Debt with an original contractual maturity of less than one year. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. As of 30 June 2020, 100% of the balance was unsecured (31 March 2020: 100% of the balance was unsecured; 31 December 2019: 100% of the balance was unsecured). 3 Debt with an original contractual maturity greater than or equal to one year. The classification of debt issued into short-term and long-term does not consider any early redemption features. 4 Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.

Provisions

Provisions	3 Months Ended
	Jun. 30, 2020
Disclosure Of Other Provisions [Line Items]
Disclosure Of Provisions Explanatory	Note 16 Provisions and contingent liabilities a) Provisions The table below presents an overview of total provisions. USD million 30.6.20 31.3.20 31.12.19 Provisions other than provisions for expected credit losses 2,361 2,404 2,861 Provisions for expected credit losses 240 162 114 Total provisions 2,601 2,566 2,974 The following table presents additional information for provisions other than provisions for expected credit losses. USD million Litigation, regulatory and similar matters 1 Restructuring Other 3 Total Balance as of 31 December 2019 2,475 106 280 2,861 Balance as of 31 March 2020 1,998 142 264 2,404 Increase in provisions recognized in the income statement 20 20 8 49 Release of provisions recognized in the income statement (18) (8) (1) (28) Provisions used in conformity with designated purpose (33) (45) (7) (85) Foreign currency translation / unwind of discount 14 1 5 20 Balance as of 30 June 2020 1,980 111 2 269 2,361 1 Comprises provisions for losses resulting from legal, liability and compliance risks. 2 Primarily consists of personnel-related restructuring provisions of USD 51 million as of 30 June 2020 (31 March 2020: USD 78 million; 31 December 2019: USD 40 million) and provisions for onerous contracts of USD 55 million as of 30 June 2020 (31 March 2020: USD 59 million; 31 December 2019: USD 61 million). 3 Mainly includes provisions related to real estate, employee benefits and operational risks. Restructuring provisions primarily relate to severance payments and onerous contracts. Severance-related provisions are used within a short time period, usually within six months, but potential changes in amount may be triggered when natural staff attrition reduces the number of people affected by a restructuring event and therefore the estimated costs. Onerous contract s for property are recognized when UBS is committed to pay for non-lease components, such as utilities, service charges, taxes and maintenance , when a property is vacated or not fully recovered from sub-tenants. Information about provisions and contingent liabilities in respect of litigation, regulatory and similar matters, as a class, is included in Note 16 b . There are no material contingent liabilities associated with the other classes of provisions.

Litigation, regulatory and simi

Litigation, regulatory and similar matters	3 Months Ended
	Jun. 30, 2020
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Disclosure Of Contingent Liabilities Explanatory	b) Litigation, regulatory and similar matters The Group operates in a legal and regulatory environment that exposes it to significant litigation and similar risks arising from d isputes and regulatory proceedings. As a result, UBS (which for purposes of this Note may refer to UBS Group AG and/ or one or more of its subsidiaries, as applicable) is involved in various disputes and legal proceedings, including litigation, arbitration, and regulatory and criminal investigations. Such matters are subject to many uncertainties, and the outcome and the timing of resolution are often difficult to predict, particularly in the earlier stages of a case. There are also situations where the Grou p may enter into a settlement agreement. This may occur in order to avoid the expense, management distraction or reputational implications of continuing to contest liability, even for those matters for which the Group believes it should be exonerated. The uncertainties inherent in all such matters affect the amount and timing of any potential outflows for both matters with respect to which provisions have been established and other contingent liabilities. The Group makes provisions for such matters brought against it when, in the opinion of management after seeking legal advice, it is more likely than not that the Group has a present legal or constructive obligation as a result of past events, it is probable that an outflow of resources will be required, and the amount can be reliably estimated. Where these factors are otherwise satisfied, a provision may be established for claims that have not yet been asserted against the Group, but are nevertheless expected to be, based on the Group’s experience with simil ar asserted claims. If any of those conditions is not met, such matters result in contingent liabilities. If the amount of an obligation cannot be reliably estimated, a liability exists that is not recognized even if an outflow of resources is probable. Ac cordingly, no provision is established even if the potential outflow of resources with respect to such matters could be significant. Developments relating to a matter that occur after the relevant reporting period, but prior to the issuance of financial st atements, which affect management’s assessment of the provision for such matter (because, for example, the developments provide evidence of conditions that existed at the end of the reporting period), are adjusting events after the reporting period under I AS 10 and must be recognized in the financial statements for the reporting period. Specific litigation, regulatory and other matters are described below, including all such matters that management considers to be material and others that management believe s to be of significance due to potential financial, reputational and other effects. The amount of damages claimed, the size of a transaction or other information is provided where available and appropriate in order to assist users in considering the magnit ude of potential exposures. In the case of certain matters below, we state that we have established a provision, and for the other matters, we make no such statement. When we make this statement and we expect disclosure of the amount of a provision to prej udice seriously our position with other parties in the matter because it would reveal what UBS believes to be the probable and reliably estimable outflow, we do not disclose that amount. In some cases we are subject to confidentiality obligations that prec lude such disclosure. With respect to the matters for which we do not state whether we have established a provision, either: (a) we have not established a provision, in which case the matter is treated as a contingent liability under the applicable account ing standard; or (b) we have established a provision but expect disclosure of that fact to prejudice seriously our position with other parties in the matter because it would reveal the fact that UBS believes an outflow of resources to be probable and relia bly estimable. With respect to certain litigation, regulatory and similar matters for which we have established provisions, we are able to estimate the expected timing of outflows. However, the aggregate amount of the expected outflows for those matters fo r which we are able to estimate expected timing is immaterial relative to our current and expected levels of liquidity over the relevant time periods. The aggregate amount provisioned for litigation, regulatory and similar matters as a class is disclosed in the “Provisions” table in N ote 16 a above. It is not practicable to provide an aggregate estimate of liability for our litigation, regulatory and similar matters as a class of contingent liabilities. Doing so would require UBS to provide speculative legal assessments as to claims and proceedings that involve unique fact patterns or novel legal theories, that have not yet been initiated or are at early stages of adjudication, or as to which alleged damages have not been quantified by the claimants. Although UBS therefore cannot provide a numerical estimate of the future losses that could arise from litigation, regulatory and similar matters, UBS b elieves that the aggregate amount of possible future losses from this class that are more than remote substantially exceeds the level of current provisions. Litigation, regulatory and similar matters may also result in non-monetary penalties and consequen ces. For example, the non-prosecution agreement UBS entered into with the US Department of Justice (DOJ), Criminal Division, Fraud Section in connection with submissions of benchmark interest rates, including, among others, the British Bankers’ Association London Interbank Offered Rate (LIBOR), was terminated by the DOJ based on its determination that UBS had committed a US crime in relation to foreign exchange matters. As a consequence, UBS AG pleaded guilty to one count of wire fraud for conduct in the LI BOR matter, paid a fine and was subject to probation , which ended in January 2020. A guilty plea to, or conviction of, a crime could have material consequences for UBS. Resolution of regulatory proceedings may require UBS to obtain waivers of regulatory d isqualifications to maintain certain operations, may entitle regulatory authorities to limit, suspend or terminate licenses and regulatory authorizations, and may permit financial market utilities to limit, suspend or terminate UBS’s participation in such utilities. Failure to obtain such waivers, or any limitation, suspension or termination of licenses, authorizations or participations, could have material consequences for UBS. The risk of loss associated with litigation, regulatory and similar matters is a component of operational risk for purposes of determining capital requirements. Information concerning our capital requirements and the calculation of operational risk for this purpose is included in the “Capital management” section of this report. Provisions for litigation, regulatory and similar matters by business division and in Group Functions 1 USD million Global Wealth Manage- ment Personal & Corporate Banking Asset Manage- ment Investment Bank Group Functions UBS Balance as of 31 December 2019 782 113 0 255 1,325 2,475 Balance as of 31 March 2020 747 112 0 205 934 1,998 Increase in provisions recognized in the income statement 20 0 0 1 0 20 Release of provisions recognized in the income statement (12) (6) 0 0 0 (18) Provisions used in conformity with designated purpose (33) 0 0 (1) 0 (33) Foreign currency translation / unwind of discount 9 2 0 2 0 14 Balance as of 30 June 2020 732 108 0 207 934 1,980 1 Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions. 1. Inquiries regarding cross-border wealth management businesses Tax and regulatory authorities in a number of countries have made inquiries, served requests for information or examined employees l ocated in their respective jurisdictions relating to the cross-border wealth management services provided by UBS and other financial institutions. It is possible that the implementation of automatic tax information exchange and other measures relating to c ross-border provision of financial services could give rise to further inquiries in the future. UBS has received disclosure orders from the Swiss Federal Tax Administration (FTA) to transfer information based on requests for international administrative as sistance in tax matters. The requests concern a number of UBS account numbers pertaining to current and former clients and are based on data from 2006 and 2008. UBS has taken steps to inform affected clients about the administrative assistance proceedings and their procedural rights, including the right to appeal. The requests are based on data received from the German authorities, who seized certain data related to UBS clients booked in Switzerland during their investigations and have apparently shared thi s data with other European countries. UBS expects additional countries to file similar requests. The Swiss Federal Administrative Court ruled in 2016 that, in the administrative assistance proceedings related to a French bulk request, UBS has the right to appeal all final FTA client data disclosure orders. On 30 July 2018, the Swiss Federal Administrative Court granted UBS’s appeal by holding the French administrative assistance request inadmissible. The FTA filed a final appeal with the Swiss Federal Supre me Court. O n 26 July 2019 , t he Supreme Court reversed the decision of the Federal Administrative Court. In December 2019, the court released its written decision. The decision requires the FTA to obtain confirmation from the French authorities that transmitted data will be used only for the purposes stated in their request before transmitting any data. The stated purpose of the original request was to obtain information relating to taxes owed by account holders. Accordingly, any information transferred to the French authorities must not be passed to criminal authorities or used in connection with the ongoing case against UBS discussed in this item. In February 2020, the FTA ordered that UBS would not be granted party status in the French administrativ e assistance proceedings. UBS appealed this decision to the Federal Administrative Court. On 15 July, the Federal Admi nistrative Court upheld the FTA’ s decision, holding that UBS does not have party status in these proceedings. UBS has ten days to appeal t his decision to the Swiss Supreme Court . Since 2013, UBS (France) S.A., UBS AG and certain former employees have been under investigation in France for alleged complicity in unlawful solicitation of clients on French territory, regarding the laundering of proceeds of tax fraud, and banking and financial solicitation by unauthorized persons. In connection with this investigation, the investigating judges ordered UBS AG to provide bail (“ caution ”) of EUR 1.1 billion and UBS (France) S.A. to post bail of EUR 40 million, which was reduced on appeal to EUR 10 million. A trial in the court of first instance took place from 8 October 2018 until 15 November 2018. On 20 February 2019, the court announced a verdict finding UBS AG guilty of unlawful solicitation of cl ients on French territory and aggravated laundering of the proceeds of tax fraud, and UBS ( France ) S.A. guilty of aiding and abetting unlawful solicitation and laundering the proceeds of tax fraud. The court imposed fines aggregating EUR 3.7 billion on UBS AG and UBS ( France ) S.A. and awarded EUR 800 million of civil damages to the French state. UBS has appealed the decision. Under French law, the judgment is suspended while the appeal is pending. The trial originally scheduled for 2 June 2020 has been rescheduled to 8-24 March 2021. The Court of Appeal will retry the case de novo as to both the law and the facts, and the fines and penalties can be greater than or less than those imposed by the court of first instance. A subsequent appeal to the Cour de Cass ation, France’s highest court, is possible with respect to questions of law. UBS believes that based on both the law and the facts the judgment of the court of first instance should be reversed. UBS believes it followed its obligations under Swiss and Fren ch law as well as the European Savings Tax Directive. Even assuming liability, which it contests, UBS believes the penalties and damage amounts awarded greatly exceed the amounts that could be supported by the law and the facts. In particular, UBS believes the court incorrectly based the penalty on the total regularized assets rather than on any unpaid taxes on those assets for which a fraud has been characterized and further incorrectly awarded damages based on costs that were not proven by the civil party . Notwithstanding that UBS believes it should be acquitted, our balance sheet at 30 June 2020 reflected provisions with respect to this matter in an amount of EUR 450 million ( USD 50 6 million at 30 June 2020 ). The wide range of possible outcomes in this ca se contributes to a high degree of estimation uncertainty. The provision reflected on our balance sheet at 30 June 2020 reflects our best estimate of possible financial implications, although it is reasonably possible that actual penalties and civil damage s could exceed the provision amount . In 2016, UBS was notified by the Belgian investigating judge that it is under formal investigation (“ inculpé ”) regarding the laundering of proceeds of tax fraud, of banking and financial solicitation by unauthorized persons, and of serious tax fraud. In 2018, tax authorities and a prosecutor’s office in Italy asserted that UBS is potentially liable for ta xes and penalties as a result of its activities in Italy from 2012 to 2017. In June 2019, UBS entered into a settlement agreement with the Italian tax authorities under which it paid EUR 101 million to resolve the claims asserted by the authority related t o UBS AG’s potential permanent establishment in Italy. In October 2019, the Judge of Preliminary Investigations of the Milan Court approved an agreement with the Milan prosecutor under Article 63 of Italian Administrative Law 231 under which UBS AG, UBS Sw itzerland AG and UBS Monaco have paid an aggregate of EUR 10.3 million to resolve claims premised on the alleged inadequacy of historical internal controls. No admission of wrongdoing was required in connection with this resolution. Our balance sheet at 30 June 2020 reflected provisions with respect to matters described in this item 1 in an amount that UBS believes to be appropriate under the applicable accounting standard. As in the case of other matters for which we have established provisions, the future outflow of resources in respect of such matters cannot be determined with certainty based on currently available information and accordingly may ultimately prove to be substantially greater (or may be less) than the provision that we have recognized. 2. C laims related to sales of residential mortgage-backed securities and mortgages From 2002 through 2007, prior to the crisis in the US residential loan market, UBS was a substantial issuer and underwriter of US residential mortgage-backed securities (RMBS) a nd was a purchaser and seller of US residential mortgages. Since 2014, the US Attorney’s Office for the Eastern District of New York has sought information from UBS pursuant to the Financial Institutions Reform, Recovery and Enforcement Act of 1989 (FIRRE A), related to UBS’s RMBS business from 2005 through 2007. On 8 November 2018, the DOJ filed a civil complaint in the District Court for the Eastern District of New York. The complaint seeks unspecified civil monetary penalties under FIRREA related to UBS’ s issuance, underwriting and sale of 40 RMBS transactions in 2006 and 2007. UBS moved to dismiss the civil complaint on 6 February 2019. On 10 December 2019, the district court denied UBS’s motion to dismiss. Our balance sheet at 30 June 2020 reflected a provision with respect to matters described in this item 2 in an amount that UBS believes to be appropriate under the applicable accounting standard. As in the case of other matters for which we have established provisions, the future outflow of resources in respect of this matter cannot be determined with certainty based on currently available information and accordingly may ultimately prove to be substantially greater (or may be less) than the provision that we have recognized. 3. Madoff In relation to th e Bernard L. Madoff Investment Securities LLC (BMIS) investment fraud, UBS AG, UBS (Luxembourg) S.A. (now UBS Europe SE, Luxembourg branch) and certain other UBS subsidiaries have been subject to inquiries by a number of regulators, including the Swiss Fin ancial Market Supervisory Authority (FINMA) and the Luxembourg Commission de Surveillance du Secteur Financier. Those inquiries concerned two third-party funds established under Luxembourg law, substantially all assets of which were with BMIS, as well as c ertain funds established in offshore jurisdictions with either direct or indirect exposure to BMIS. These funds faced severe losses, and the Luxembourg funds are in liquidation. The documentation establishing both funds identifies UBS entities in various r oles, including custodian, administrator, manager, distributor and promoter, and indicates that UBS employees serve as board members. In 2009 and 2010, the liquidators of the two Luxembourg funds filed claims against UBS entities, non-UBS entities and cert ain individuals, including current and former UBS employees, seeking amounts totaling approximately EUR 2.1 billion, which includes amounts that the funds may be held liable to pay the trustee for the liquidation of BMIS (BMIS Trustee). A large number of a lleged beneficiaries have filed claims against UBS entities (and non-UBS entities) for purported losses relating to the Madoff fraud. The majority of these cases have been filed in Luxembourg, where decisions that the claims in eight test cases were inadmi ssible have been affirmed by the Luxembourg Court of Appeal, and the Luxembourg Supreme Court has dismissed a further appeal in one of the test cases. In the US, the BMIS Trustee filed claims against UBS entities, among others, in relation to the two Luxem bourg funds and one of the offshore funds. The total amount claimed against all defendants in these actions was not less than USD 2 billion. In 2014, the US Supreme Court rejected the BMIS Trustee’s motion for leave to appeal decisions dismissing all claim s except those for the recovery of approximately USD 125 million of payments alleged to be fraudulent conveyances and preference payments. In 2016, the bankruptcy court dismissed these claims against the UBS entities. In February 2019, the Court of Appeals reversed the dismissal of the BMIS Trustee’s remaining claims , and the US Supreme Court subsequently denied a petition seeking review of the Court of Appeals’ decision. The case has been remanded to the Bankruptcy Court for further proceedings. 4. Puerto Rico Declines since 2013 in the market prices of Puerto Rico municipal bonds and of closed-end funds (funds) that are sole-managed and co-managed by UBS Trust Company of Puerto Rico and distributed by UBS Financial Services Incorporated of Puerto Rico (UBS PR) have led to multiple regulatory inquiries , as well as customer complaints and arbitrations with aggregat e claimed damages of USD 3.4 billion, of which claims with aggregate claimed damages of USD 2. 6 billion have been resolved through settlements, arbitration or withdrawal of the claim. The claims have been filed by clients in Puerto Rico who own the funds or Puerto Rico municipal bonds and/or who used their UBS account assets as collateral for UBS non-purpose loans; customer complaint and arbitration allegations include fraud, misrepresentation and unsuitability of the funds and of the loans. A shareholder derivative action was filed in 2014 against various UBS entities and current and certain former directors of the funds, alleging hundreds of millions of US dollars in losses in the funds. In 2015, defendants’ motion to dismiss was denied and a request for permission to appeal that ruling was denied by the Puerto Rico Supreme Court. In 2014, a federal class action complaint also was filed against various UBS entities, certain members of UBS PR senior management and the co-manager of certain of the funds, seeking damages for investor losses in the funds during the period from May 2008 through May 2014. Following denial of the plaintiffs’ motion for class certification, the case was dismissed in October 2018. In 2014 and 2015, UBS entered into se ttlements with the Office of the Commissioner of Financial Institutions for the Commonwealth of Puerto Rico, the US Securities and Exchange Commission (SEC) and the Financial Industry Regulatory Authority in relation to their examinations of UBS’s operatio ns. In 2011, a purported derivative action was filed on behalf of the Employee Retirement System of the Commonwealth of Puerto Rico (System) against over 40 defendants, including UBS PR, which was named in connection with its underwriting and consulting s ervices. Plaintiffs alleged that defendants violated their purported fiduciary duties and contractual obligations in connection with the issuance and underwriting of USD 3 billion of bonds by the System in 2008 and sought damages of over USD 800 million. I n 2016, the court granted the System’s request to join the action as a plaintiff, but ordered that plaintiffs must file an amended complaint. In 2017, the court denied defendants’ motion to dismiss the amended complaint. Beginning in 2015, certain agencie s and public corporations of the Commonwealth of Puerto Rico (Commonwealth) defaulted on certain interest payments on Puerto Rico bonds. In 2016, US federal legislation created an oversight board with power to oversee Puerto Rico’s finances and to restruct ure its debt. The oversight board has imposed a stay on the exercise of certain creditors’ rights. In 2017, the oversight board placed certain of the bonds into a bankruptcy-like proceeding under the supervision of a Federal District Judge. These events, f urther defaults or any further legislative action to create a legal means of restructuring Commonwealth obligations or to impose additional oversight on the Commonwealth’s finances, or any restructuring of the Commonwealth’s obligations, may increase the n umber of claims against UBS concerning Puerto Rico securities, as well as potential damages sought. In May 2019 , the oversight board filed complaints in Puerto Rico federal district court bringing claims against financial, legal and accounting firms that h ad participated in Puerto Rico municipal b ond offerings, including UBS, seeking a return of underwriting and swap fees paid in c onnection with those offerings. UBS estimates that it received approximately USD 125 million in fees in the relevant offerings. In August 2019 and February 2020, three US insurance companies that insured issues of Puerto Rico municipal bonds sued UBS and seven other underwriters of Puert o Rico municipal bonds. The actions collectively seek recovery of an aggregate of USD 955 millio n in damages from the defendants. The plaintiffs in these cases claim that defendants failed to reasonably investigate financial statements in the offering materials for the insured Puerto Rico bonds issued between 2002 and 2007, which plaintiffs argue the y relied upon in agreeing to insure the bonds notwithstanding that they had no contractual relationship with the underwriters. Our balance sheet at 30 June 2020 reflected provisions with respect to matters described in this item 4 in amounts that UBS belie ves to be appropriate under the applicable accounting standard. As in the case of other matters for which we have established provisions, the future outflow of resources in respect of such matters cannot be determined with certainty based on currently avai lable information and accordingly may ultimately prove to be substantially greater (or may be less) than the provisions that we have recognized. 5. Foreign exchange, LIBOR and benchmark rates, and other trading practices Foreign exchange-related regulatory matters: Beginning in 2013, numerous authorities commenced investigations concerning possible manipulation of foreign exchange markets and precious metals prices. As a result of these investigations, UBS entered into resolutions with the UK Financial Conduct Authority (FCA), the US Commodity Futures Trading Commission (CFTC), FINMA, the Board of Governors of the Federal Reserve Sy stem (Federal Reserve Board) and the Connecticut Department of Banking, the DOJ’s Criminal Division and the European Commission. UBS has ongoing obligations under the Cease and Desist Order of the Federal Reserve Board and the Office of the Comptroller of the Currency (as successor to the Connecticut Department of Banking), and to cooperate with relevant authorities and to undertake certain remediation measures. UBS has also been granted conditional immunity by the Antitrust Division of the DOJ and by autho rities in other jurisdictions in connection with potential competition law violations relating to foreign exchange and precious metals businesses. Investigations relating to foreign exchange matters by certain authorities remain ongoing no twithstanding the se resolutions . Foreign exchange-related civil litigation: Putative class actions have been filed since 2013 in US federal courts and in other jurisdictions against UBS and other banks on behalf of putative classes of persons who engaged in foreign currency transactions with any of the defendant banks. UBS has resolved US federal court class actions relating to foreign currency transactions with the defendant banks and persons who transacted in foreign exchange futures contracts and o ptions on such f utures under a settlement agreement that provides for UBS to pay an aggregate of USD 141 million and provide cooperation to the settlement classes. Certain class members have excluded themselves from that settlement and have filed individual actions in US and English courts against UBS and other banks, alleging violations of US and European competition laws and unjust enrichment. In 2015, a putative class action was filed in federal court against UBS and numerous other banks on behalf of persons and busines ses in the US who directly purchased foreign currency from the defendants and alleged co-conspirators for their own end use. In March 2017, the court granted UBS’s (and the other banks’) motions to dismiss the complaint. The plaintiffs filed an amended com plaint in August 2017. In March 2018, the court denied the defendants’ motions to dismiss the amended complaint. In 2017, two putative class actions were filed in federal court in New York against UBS and numerous other banks on behalf of persons and enti ties who had indirectly purchased foreign exchange instruments from a defendant or co-conspirator in the US, and a consolidated complaint was filed in June 2017. In March 2018, the court dismissed the consolidated complaint. In October 2018, the court gran ted plaintiffs’ motion seeking leave to file an amended complaint. UBS and 11 other banks have reached an agreement with the plaintiffs to settle the class action for a total of USD 10 million. The settlement is subject to court approval. LIBOR and other b enchmark-related regulatory matters: Numerous government agencies, including the SEC, the CFTC, the DOJ, the FCA, the UK Serious Fraud Office, the Monetary Authority of Singapore, the Hong Kong Monetary Authority, FINMA, various state attorneys general in the US and competition authorities in various jurisdictions , have conducted investigations regarding potential improper attempts by UBS, among others, to manipulate LIBOR and other benchmark rates at certain times. UBS reached settlements or otherwise conc luded investigations relating to benchmark interest rates with the investigating authorities. UBS has ongoing obligations to cooperate with the authorities with whom we have reached resolutions and to undertake certain remediation measures with respect to benchmark interest rate submissions. UBS has been granted conditional leniency or conditional immunity from authorities in certain jurisdictions, including the Antitrust Division of the DOJ and the Swiss Competition Commission (WEKO), in connection with po tential antitrust or competition law violations related to certain rates. However, UBS has not reached a final settlement with WEKO, as the Secretariat of WEKO has asserted that UBS does not qualify for full immunity. LIBOR and other benchmark-related civi l litigation: A number of putative class actions and other actions are pending in the federal courts in New York against UBS and numerous other banks on behalf of parties who transacted in certain interest rate benchmark-based derivatives. Also pending in the US and in other jurisdictions are a number of other actions asserting losses related to various products whose interest rates were linked to LIBOR and other benchmarks, including adjustable rate mortgages, preferred and debt securities, bonds pledged a s collateral, loans, depository accounts, investments and other interest-bearing instruments. The complaints allege manipulation, through various means, of certain benchmark interest rates, including USD LIBOR, Euroyen TIBOR, Yen LIBOR, EURIBOR, CHF LIBOR, GBP LIBOR, SGD SIBOR and SOR and Australian BBSW, and seek unspecified compensatory and other damages under varying legal theories. USD LIBOR class and individual actions in the US: In 2013 and 2015, the district court in the USD LIBOR actions dismissed, in whole or in part, certain plaintiffs’ antitrust claims, federal racketeering claims, CEA claims, and state common law claims. Although the Second Circuit vacated the district court’s judgment dismissing antitrust claims, the district court again dismissed antitrust claims against UBS in 2016. Certain plaintiffs have appealed that decision to the Second Circuit. Separately, in 2018, the Second Circuit reversed in part the district court’s 2015 decision dismissing certain individual plaintiffs’ claims and certain of these actions are now proceeding. UBS entered into an agreement in 2016 with representatives of a class of bondholders to settle their USD LIBOR class action. The agreement has received preliminary court approval and remains subject to final approval. In 2018, the district court denied plaintiffs’ motions for class certification in the USD class actions for claims pending against UBS, and plaintiffs sought permission to appeal that ruling to the Second Circuit. In July 2018, the Second Circuit denied the petition to appeal of the class of USD lenders and in November 2018 denied the petition of the USD exchange class. In December 2019, UBS entered into an agreement with representatives of the class of USD lenders to settle their USD LIBOR class action. The agreement has received final court approval . In January 2019, a putative class action was filed in the District Court for the Southern District of New York against UBS and numerous other banks on behalf of US residents who, since 1 February 2014, directly transacted with a defendant bank in USD LIBOR instruments. The complaint asserts antitrust claims. The defendants moved to dismiss the complaint in August 2019. On 26 March 2020 the court granted defendants’ motion to dismiss the complaint in its entirety. Plaintiffs have appealed the dismissal. Other benchmark class actions in the US: In 2014, the court in one of the Euroyen TIBOR lawsuits dismissed certain of the plaintiffs’ claims, including a federal antitrust claim, for lack of standing. In 2015, this court dismissed the plaintiffs’ federal racketeering claims on the same basis and affirmed its previous dismissal of the plainti ffs’ antitrust claims against UBS. In 2017, this court also dismissed the other Yen LIBOR / Euroyen TIBOR action in its entirety on standing grounds, as did the court in the CHF LIBOR action. Also in 2017, the court in the EURIBOR lawsuit dismissed the cas e as to UBS and certain other foreign defendants for lack of personal jurisd

Guarantees, commitments and for

Guarantees, commitments and forward starting transactions	3 Months Ended
	Jun. 30, 2020
Maximum Exposure To Credit Risk [Line Items]
Disclosure Of Credit Risk Exposure Explanatory	USD million 30.6.20 Carrying amount 1,2 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 149,549 149,549 0 0 0 0 0 0 Loans and advances to banks 15,633 15,534 99 0 (6) (4) (1) (1) Receivables from securities financing transactions 85,271 85,271 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 30,846 30,846 0 0 (1) (1) 0 0 Loans and advances to customers 344,652 318,977 23,673 2,002 (1,089) (134) (236) (719) of which: Private clients with mortgages 137,563 128,527 8,076 960 (157) (25) (93) (39) of which: Real estate financing 40,653 34,083 6,559 11 (55) (10) (42) (4) of which: Large corporate clients 14,376 11,148 2,962 266 (308) (34) (58) (217) of which: SME clients 13,518 7,845 5,177 496 (319) (21) (29) (269) of which: Lombard 116,482 116,292 0 191 (71) (11) 0 (60) of which: Credit cards 1,396 1,065 304 26 (35) (9) (11) (15) of which: Commodity trade finance 3,194 3,155 30 9 (83) (5) 0 (78) Other financial assets measured at amortized cost 27,253 26,107 404 741 (151) (40) (10) (100) of which: Loans to financial advisors 2,673 2,090 201 382 (116) (34) (7) (74) Total financial assets measured at amortized cost 653,205 626,286 24,176 2,743 (1,249) (181) (247) (821) Financial assets measured at fair value through other comprehensive income 8,624 8,624 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 661,829 634,910 24,176 2,743 (1,249) (181) (247) (821) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 16,313 14,768 1,369 176 (47) (11) (4) (32) of which: Large corporate clients 3,494 2,640 733 121 (8) (3) (3) (3) of which: SME clients 1,293 725 514 54 (25) (1) (1) (24) of which: Financial intermediaries and hedge funds 6,964 6,910 54 0 (6) (6) 0 0 of which: Lombard 602 602 0 0 (1) 0 0 (1) of which: Commodity trade finance 1,601 1,583 18 0 (1) (1) 0 0 Irrevocable loan commitments 39,651 34,494 5,044 114 (121) (57) (64) 0 of which: Large corporate clients 23,167 18,284 4,838 45 (109) (50) (59) 0 Forward starting reverse repurchase and securities borrowing agreements 2,210 2,210 0 0 0 0 0 0 Committed unconditionally revocable credit lines 37,822 32,892 4,870 60 (65) (34) (32) 0 of which: Real estate financing 5,666 5,019 647 0 (25) (4) (21) 0 of which: Large corporate clients 4,356 3,482 856 18 (9) (4) (5) 0 of which: SME clients 4,980 2,962 1,984 34 (17) (14) (4) 0 of which: Lombard 9,410 9,410 0 0 (1) (1) 0 0 of which: Credit cards 8,159 7,726 425 8 (10) (7) (2) 0 Irrevocable committed prolongation of existing loans 4,265 4,240 25 1 (7) (7) 0 0 Total off-balance sheet financial instruments and other credit lines 100,262 88,604 11,307 351 (240) (108) (100) (32) Total allowances and provisions (1,489) (289) (346) (853) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. 2 The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs. USD million 31.3.20 Carrying amount 1 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 139,258 139,258 0 0 0 0 0 0 Loans and advances to banks 16,972 16,894 78 0 (6) (4) (1) (1) Receivables from securities financing transactions 89,648 88,394 449 804 (34) (2) (15) (16) Cash collateral receivables on derivative instruments 39,545 39,545 0 0 0 0 0 0 Loans and advances to customers 337,551 320,740 14,896 1,914 (936) (101) (164) (671) of which: Private clients with mortgages 134,759 126,633 7,168 957 (111) (17) (55) (39) of which: Real estate financing 39,097 33,876 5,205 16 (49) (6) (39) (4) of which: Large corporate clients 15,343 14,328 849 166 (191) (21) (35) (134) of which: SME clients 11,943 10,453 1,036 455 (358) (18) (20) (320) of which: Lombard 114,401 114,144 0 258 (56) (10) 0 (46) of which: Credit cards 1,317 985 308 23 (34) (7) (14) (14) of which: Commodity trade finance 2,801 2,778 13 10 (82) (5) 0 (77) Other financial assets measured at amortized cost 23,765 22,820 410 536 (143) (31) (15) (97) of which: Loans to financial advisors 2,699 2,198 303 198 (112) (25) (13) (73) Total financial assets measured at amortized cost 646,739 627,651 15,833 3,255 (1,120) (139) (195) (786) Financial assets measured at fair value through other comprehensive income 7,653 7,653 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 654,392 635,305 15,833 3,255 (1,120) (139) (195) (786) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,830 17,387 361 83 (76) (8) (1) (66) of which: Large corporate clients 3,742 3,471 244 26 (33) (1) 0 (32) of which: SME clients 1,308 1,185 67 56 (28) 0 0 (27) of which: Financial intermediaries and hedge funds 7,965 7,949 16 0 (5) (5) 0 0 of which: Lombard 603 603 0 0 (7) 0 0 (7) of which: Commodity trade finance 1,967 1,951 16 0 (1) (1) 0 0 Irrevocable loan commitments 28,334 27,701 550 84 (46) (34) (13) 0 of which: Large corporate clients 18,224 17,712 453 59 (33) (26) (7) 0 Forward starting reverse repurchase and securities borrowing agreements 5,123 5,123 0 0 0 0 0 0 Committed unconditionally revocable credit lines 34,487 33,509 942 35 (36) (20) (16) 0 of which: Real estate financing 4,989 4,679 310 0 (16) (3) (12) 0 of which: Large corporate clients 3,784 3,697 70 17 (2) (1) 0 0 of which: SME clients 4,644 4,492 133 18 (10) (9) (1) 0 of which: Lombard 7,649 7,649 0 0 0 (1) 0 0 of which: Credit cards 8,295 7,923 371 0 (5) (4) (2) 0 Irrevocable committed prolongation of existing loans 4,040 4,038 0 2 (4) (4) 0 0 Total off-balance sheet financial instruments and other credit lines 89,814 87,757 1,852 204 (162) (66) (29) (66) Total allowances and provisions (1,282) (205) (225) (852) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,447 12,367 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 326,786 309,499 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 22,980 21,953 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 576,815 558,420 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 583,159 564,765 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 85,728 83,626 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. ECL coverage ratios for core loan portfolios 30.6.20 Gross carrying amount (USD million) 1 ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 345,741 319,111 23,909 2,721 32 4 99 2,643 of which: Private clients with mortgages 137,720 128,552 8,169 1,000 11 2 113 394 of which: Real estate financing 40,708 34,093 6,601 15 14 3 63 2,541 of which: Large corporate clients 14,684 11,182 3,020 483 210 30 191 4,488 of which: SME clients 13,837 7,866 5,206 765 231 27 55 3,520 of which: Lombard 116,554 116,303 0 251 6 1 0 2,403 of which: Credit cards 1,430 1,074 315 41 242 81 354 3,569 of which: Commodity trade finance 3,278 3,160 30 87 254 15 8 8,973 Other financial assets measured at amortized cost 27,404 26,148 414 842 55 15 241 1,194 of which: Loans to financial advisors 2,789 2,124 208 456 415 161 347 1,627 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 16,313 14,768 1,369 176 29 7 27 1,831 Irrevocable loan commitments 39,651 34,494 5,044 114 31 16 128 0 Committed unconditionally revocable credit lines 37,822 32,892 4,870 60 17 10 65 0 Irrevocable committed prolongation of existing loans 4,265 4,240 25 1 16 16 15 0 1 The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs. 31.3.20 Gross carrying amount (USD million) ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 338,486 320,841 15,060 2,585 28 3 109 2,596 of which: Private clients with mortgages 134,870 126,650 7,224 996 8 1 77 390 of which: Real estate financing 39,146 33,881 5,245 20 12 2 75 2,047 of which: Large corporate clients 15,534 14,349 885 300 123 15 401 4,476 of which: SME clients 12,301 10,470 1,055 775 291 17 188 4,129 of which: Lombard 114,457 114,154 0 303 5 1 0 1,508 of which: Credit cards 1,351 993 322 37 254 72 420 3,708 of which: Commodity trade finance 2,882 2,783 13 87 283 18 1 8,818 Other financial assets measured at amortized cost 23,908 22,850 425 633 60 13 360 1,531 of which: Loans to financial advisors 2,811 2,224 317 271 397 114 418 2,702 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,830 17,387 361 83 42 5 30 8,045 Irrevocable loan commitments 28,334 27,701 550 84 16 12 228 0 Committed unconditionally revocable credit lines 34,487 33,509 942 35 11 6 168 0 Irrevocable committed prolongation of existing loans 4,040 4,038 0 2 10 10 0 0 31.12.19 Gross carrying amount (USD million) ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 327,550 309,581 15,661 2,308 23 3 79 2,420 of which: Private clients with mortgages 132,756 124,077 7,679 1,000 8 1 72 406 of which: Real estate financing 38,524 32,937 5,567 21 11 2 62 1,765 of which: Large corporate clients 9,819 9,199 429 192 119 16 100 5,088 of which: SME clients 12,089 9,834 1,464 791 251 18 104 3,420 of which: Lombard 112,915 112,799 0 116 2 0 0 1,566 of which: Credit cards 1,696 1,322 339 35 205 60 404 3,718 of which: Commodity trade finance 2,925 2,831 8 87 278 17 3 8,844 Other financial assets measured at amortized cost 23,123 21,988 463 672 62 16 274 1,420 of which: Loans to financial advisors 2,987 2,370 344 272 366 122 305 2,570 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 23 4 30 4,032 Irrevocable loan commitments 27,547 27,078 419 50 13 11 120 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 10 5 143 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 8 8 0 0
Total off-balance sheet financial instruments and other credit lines
Maximum Exposure To Credit Risk [Line Items]
Disclosure Of Credit Risk Exposure Explanatory	Note 17 Guarantees, commitments and forward starting transactions The table below presents the maximum irrevocable amount of guarantees, commitments and forward starting transactions. Gross Total gross Sub-participations Net As of 30.6.20, USD million Measured at fair value Not measured at fair value Total guarantees 963 16,313 17,275 (2,627) 14,648 Loan commitments 7,390 39,651 47,042 (782) 46,259 Forward starting transactions 1 Reverse repurchase agreements 37,327 2,206 39,533 Securities borrowing agreements 4 4 Repurchase agreements 43,367 2,172 45,539 As of 31.3.20, USD million Total guarantees 969 17,830 18,800 (2,634) 16,166 Loan commitments 13,514 28,334 41,848 (817) 41,031 Forward starting transactions 1 Reverse repurchase agreements 41,161 5,113 46,275 Securities borrowing agreements 9 9 Repurchase agreements 31,293 1,221 32,515 As of 31.12.19, USD million Total guarantees 986 18,142 19,128 (2,646) 16,482 Loan commitments 6,308 27,547 33,856 (787) 33,069 Forward starting transactions 1 Reverse repurchase agreements 20,284 1,657 21,941 Repurchase agreements 7,740 408 8,148 1 Cash to be paid in the future by either UBS or the counterparty.

Currency translation rates

Currency translation rates	3 Months Ended
	Jun. 30, 2020
Foreign Exchange Rates [Line Items]
Disclosure Of Effect Of Changes In Foreign Exchange Rates Explanatory	Note 18 Currency translation rates The following table shows the rates of the main currencies used to translate the financial information of UBS’s operations with a functional currency other than the US dollar into US dollars. Closing exchange rate Average rate 1 As of For the quarter ended Year-to-date 30.6.20 31.3.20 31.12.19 30.6.19 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 1 CHF 1.06 1.04 1.03 1.02 1.04 1.04 1.00 1.04 1.00 1 EUR 1.12 1.10 1.12 1.14 1.11 1.10 1.13 1.11 1.13 1 GBP 1.24 1.24 1.32 1.27 1.24 1.28 1.28 1.26 1.30 100 JPY 0.93 0.93 0.92 0.93 0.93 0.93 0.92 0.93 0.91 1 Monthly income statement items of operations with a functional currency other than the US dollar are translated with month-end rates into US dollars. Disclosed average rates for a quarter represent an average of three month-end rates, weighted according to the income and expense volumes of all operations of the Group with the same functional currency for each month. Weighted average rates for individual business divisions may deviate from the weighted average rates for the Group.

Significant accounting polici_2

Significant accounting policies (Policies)	3 Months Ended
	Jun. 30, 2020
Disclosure Significant Accounting Policies [Line Items]
Disclosure Of Basis Of Preparation Of Financial Statements Explanatory	Basis of preparation The consolidated financial statements (the financial statements) of UBS Group AG and its subsidiaries (together, “UBS” or the “Group”) are prepared in accordance with International Financial Reporting Standards (IFRS), as issued by the International Accounting Standards B oard ( the IASB), and are presented in US dollars (USD), which is also the functional currency of UBS Group AG, UBS AG’s Head Office, UBS’s US-based operations and UBS AG London Branch . These interim financial statements are prepared in accordance with IAS 34, Interim Financial Reporting . In preparing these interim financial statements, the same accounting policies and methods of computation have been applied as in the UBS Group AG consolidated annual financial statements for the period ended 31 December 201 9, except for the changes described in this Note. These interim financial statements are unaudited and should be read in conjunction with UBS Group AG’s audited consolidated financial statements included in the Annual Report 2019. In the opinion of managem ent, all necessary adjustments were made for a fair presentation of the Group’s financial position, results of operations and cash flows. Preparation of these interim financial statements requires management to make estimates and assumptions that affect t he reported amounts of assets, liabilities, income, expenses and disclosures of contingent assets and liabilities. These estimates and assumptions are based on the best available information. Actual results in the future could differ from such estimates an d such differences may be material to the financial statements. Revisions to estimates, based on regular reviews, are recognized in the period in which they occur. For more information about areas of estimation uncertainty that are considered to require cr itical judgment, refer to “Note 1a Significant accounting policies” in the “Consolidated financial statements” section of the Annual Report 2019.
Disclosure Of Changes In Accounting Policies Accounting Estimates And Errors Explanatory	Adoption of hedge accounting requirements of IFRS 9, Financial Instruments Application and transition effect Effective from 1 January 2020, UBS has prospectively adopted the hedge accounting requirements of IFRS 9 with respect to all of its existing hedge accounting programs, except for fair value hedges of portfolio interest rate risk, whic h, as permitted under IFRS 9, continue to be accounted for under IAS 39, Financial Instruments: Recognition and Measurement . IFRS 9’s hedge accounting model further aligns accounting with risk management practices, amends hedge effectiveness requirements and prohibits voluntary de-designations. IFRS 9 permits the designation of certain additional hedged items, including layer components, net positions, and aggregated exposures, such as a combination of a non-derivative and derivative. IFRS 9 also introduces the concept of “cost of hedging,” under which the time value of an optio n contract, the forward element of a forward contract or the foreign currency basis spread in a cross-currency swap can be deferred in other comprehensive income and, depending on the nature of the hedged transaction, released to the income statement eithe r when the hedged item affects the income statement or over the term of the hedged item. The adoption of these requirements had no financial impact on UBS’s financial statements. However, the adoption allows UBS to designate more effective hedge accounting relationships, including fair value hedges of foreign currency risk using cross-currency swaps, and to reduce income statement volatility caused by foreign currency basis spread. Starting from 1 January 2020, UBS has been utilizing the concept of “cost of hedging” in its newly designated fair value hedge program of foreign currency debt using cross-currency swaps. The hedged risk is determined as changes in the value of the hedged items arising solely from changes in spot foreign exchange rates. The foreig n currency basis spread in cross-currency swaps is excluded from the hedge designation and accounted for through other comprehensive income as a cost of hedging. As of 30 June 2020 , the notional of hedging instruments and hedged items designated in the pro gram amounted to USD 13.7 billion, with a gain of USD 9 million deferred in other comprehensive income as a cost of hedging. Update to significant accounting policy – Hedge accounting (disclosed in “ Note 1a item 3j Hedge accounting ” in the financial statements 2019 included in the Annual Report 2019) Hedge accounting under IFRS 9 The Group applies hedge ac counting requirements of IFRS 9 for fair value hedges of interest rate risk related to debt instruments, fair value hedges of foreign exchange risk related to debt instruments, cash flow hedges of forecast transactions and hedges of net investments in foreign operations. At the time a financial instrument is designated in a hedge relationship, UBS formally documents the relationship between the hedging instrument(s) and hedged item(s), including the risk management objectives and strategy in undertaking the hedge transaction, the nature of risk being hedged and the methods that will be used to assess whether the hedge effectiveness criteria are met. As part of effectiveness testing, UBS assesses, both at the inception of the hedge and on an ongoing basis, whether there is an economic rel ationship between the hedged item and the hedging instrument , including whether the relationship is dominated by the effect of credit risk and whether the appropriate hedge ratio is being used. In the case of hedging forecast transactions, the forecast tra nsaction must be highly probable to occur. UBS discontinues hedge accounting when: (i) the hedge effectiveness criteria have ceased to be met; (ii) the derivative expires or is sold, terminated or exercised; (iii) the hedged item matures, is sold or repaid ; (iv) forecast transactions are no longer deemed to meet the highly probable criteria ; or (v) the risk management objective on the basis of which the hedge relationship was designated changes. Voluntary discontinuation of hedge accounting is not permitted . Hedge ineffectiveness represents the amount by which the changes in the fair value of the hedging instrument differ from changes in the fair value of the hedged item attributable to the hedged risk, or the amount by which changes in the present value of future cash flows of the hedging instrument exceed changes in the present value of expected cash flows of the hedged item. Such ineffectiveness is reco rded in Other net income from financial instruments measured at fair value through profit or loss . Fair value hedges of interest rate risk related to debt instruments In fair value hedges of interest rate risk, the fair value change of the hedged item attr ibutable to the hedged risk is reflected as an adjustment to the carrying value of the hedged item and recognized in the income statement along with the change in the fair value of the hedging instrument . If the hedge accounting relationship is terminated for reasons other than derecognition of the hedged item, the adjustment to the carrying value is amortized to the income statement over the remaining term to maturity of the hedged item using the effective interest rate method. Fair value hedges of foreign exchange risk related to debt instruments In fair value hedges of foreign currency risk, the fair value change of the hedge d item attributable to the hedged risk is reflected in the measurement of the hedge d item and recognized in the income statement along with the change in the fair value of the hedging instrument . The foreign currency basis spread of cross-curr ency swaps designated as hedging derivatives is excluded from the designation of fair value hedges of foreign currency risk. UBS has chosen to account for the foreign currency basis as a cost of hedging with amounts deferred in Other comprehensive income with in Equity . These amounts are released to the income statement over the term of the hedged item or upon discontinuation of the hedge relationship. Cash flow hedges of forecast transactions Fair value gains or losses associated with the effective portion of derivatives designated as cash flow hedges for cash flow repricing risk are recognized initially in Other comprehensive income within Equity. When the hedged forecast cash flows affect profit or loss, the associated gains or losses on the hedging derivatives are reclassified from Equity to the income statement and are presented in Interest income from derivative instruments designated as cash flow hedges within I nterest income from financial instruments measured at amortized cost and fair value through other comprehensive income . If a cash flow hedge of forecast transactions is no longer considered effective, or if the hedge relationship is termi nated, the cumulative gains or losses on the hedging derivatives previously reported in Other comprehensive income within Equity remain there until the committed or forecast transactions occur and affect profit or loss. If the forecast transactions are no longer expected to occur, the deferred gains or losses are immediately reclassified to the income statement. Hedges of net investments in foreign operations Hedges of net investments in foreign operations are accounted for similarly to cash flow hedges. Ga ins or losses on the hedging instrument relating to the effective portion of the hedge are recognized directly in Other comprehensive income within Equity , whil e any gains or losses relating to the ineffective and/or undesignated portion (for example, the interest element of a forward contract) are recognized in the income statement. Upon disposal or partial disposal of the foreign operation, the cumulative value of any such gains or losses recognized in Equity associated with the entity is reclassified to Other income . Hedge accounting under IAS 39 As permitted under IFRS 9, the Group continues to apply hedge accounting requirements of IAS 39 to fair value hedges of portfolio interest rate risk related to loans. As a result, the hedge accounting policy set out in the UBS Group AG consolidated financial statements included in the Annual Report 2019 continues to apply to this program.

Segment reporting (Tables)

Segment reporting (Tables)	3 Months Ended
	Jun. 30, 2020
Disclosure Of Operating Segments [Line Items]
Disclosure Of Operating Segments Explanatory	USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS For the six months ended 30 June 2020 Net interest income 2,054 1,029 (9) 3 (354) 2,722 Non-interest income 6,553 886 1,048 4,914 (246) 13,155 Income 8,606 1,914 1,038 4,917 (600) 15,877 Credit loss (expense) / recovery (117) (187) 0 (200) (35) (540) Total operating income 8,489 1,727 1,038 4,718 (635) 15,337 Total operating expenses 6,391 1,155 724 3,396 80 11,747 Operating profit / (loss) before tax 2,098 572 314 1,321 (715) 3,591 Tax expense / (benefit) 757 Net profit / (loss) 2,833 As of 30 June 2020 Total assets 327,218 209,851 34,865 349,266 142,638 1,063,838 USD million Global Wealth Management Personal & Corporate Banking Asset Management Investment Bank Group Functions UBS For the six months ended 30 June 2019 Net interest income 1,975 994 (13) (403) (403) 2,149 Non-interest income 6,090 920 934 4,264 425 12,633 Income 8,064 1,914 921 3,860 23 14,783 Credit loss (expense) / recovery (4) 1 0 (24) (6) (33) Total operating income 8,061 1,915 921 3,836 17 14,750 Total operating expenses 6,323 1,139 693 3,202 88 11,445 Operating profit / (loss) before tax 1,737 777 228 634 (71) 3,305 Tax expense / (benefit) 773 Net profit / (loss) 2,532 As of 31 December 2019 Total assets 309,766 209,405 34,565 315,855 102,592 972,183

Net interest income (Tables)

Net interest income (Tables)	3 Months Ended
	Jun. 30, 2020
Disclosure Net Interest Income [Line Items]
Disclosure Net Interest Income Explanatory	Note 3 Net interest income For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income Interest income from loans and deposits 1 1,632 1,868 2,065 3,500 4,088 Interest income from securities financing transactions 2 202 367 545 569 1,044 Interest income from other financial instruments measured at amortized cost 87 89 83 176 179 Interest income from debt instruments measured at fair value through other comprehensive income 35 17 27 52 52 Interest income from derivative instruments designated as cash flow hedges 178 113 29 290 55 Total interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 2,133 2,455 2,749 4,588 5,419 Interest expense on loans and deposits 3 244 463 737 707 1,404 Interest expense on securities financing transactions 4 224 219 324 443 612 Interest expense on debt issued 596 676 863 1,272 1,761 Interest expense on lease liabilities 27 28 31 56 63 Total interest expense from financial instruments measured at amortized cost 1,092 1,385 1,955 2,478 3,840 Total net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income 1,041 1,069 794 2,110 1,579 Net interest income from financial instruments measured at fair value through profit or loss Net interest income from financial instruments at fair value held for trading 242 201 325 442 759 Net interest income from brokerage balances 182 137 43 318 120 Net interest income from securities financing transactions at fair value not held for trading 5 18 33 27 51 57 Interest income from other financial instruments at fair value not held for trading 153 202 233 355 453 Interest expense on other financial instruments designated at fair value (244) (311) (396) (555) (819) Total net interest income from financial instruments measured at fair value through profit or loss 351 261 232 612 571 Total net interest income 1,392 1,330 1,026 2,722 2,149 1 Consists of interest income from cash and balances at central banks, loans and advances to banks and customers, and cash collateral receivables on derivative instruments, as well as negative interest on amounts due to banks, customer deposits, and cash collateral payables on derivative instruments. 2 Includes interest income on receivables from securities financing transactions and negative interest, including fees, on payables from securities financing transactions. 3 Consists of interest expense on amounts due to banks, cash collateral payables on derivative instruments, and customer deposits, as well as negative interest on cash and balances at central banks, loans and advances to banks, and cash collateral receivables on derivative instruments. 4 Includes interest expense on payables from securities financing transactions and negative interest, including fees, on receivables from securities financing transactions. 5 Includes interest expense on securities financing transactions designated at fair value.

Net fee and commission income (

Net fee and commission income (Tables)	3 Months Ended
	Jun. 30, 2020
Net fee And Commission Income [Line Items]
Disclosure Of Fee And Commission Income Expense Explanatory	Note 4 Net fee and commission income For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Fee and commission income Underwriting fees 257 200 224 456 379 of which: equity underwriting fees 123 106 118 230 166 of which: debt underwriting fees 133 93 105 227 212 M&A and corporate finance fees 117 218 296 335 413 Brokerage fees 959 1,245 826 2,204 1,654 Investment fund fees 1,197 1,295 1,196 2,492 2,373 Portfolio management and related services 1,813 2,059 1,915 3,872 3,719 Other 387 461 451 848 911 Total fee and commission income 1 4,729 5,477 4,907 10,207 9,448 of which: recurring 2,980 3,341 3,136 6,320 6,134 of which: transaction-based 1,674 2,098 1,749 3,773 3,264 of which: performance-based 75 39 23 114 50 Fee and commission expense Brokerage fees paid 63 86 88 149 168 Distribution fees paid 144 156 142 300 284 Other 212 214 203 426 390 Total fee and commission expense 419 456 434 875 842 Net fee and commission income 4,311 5,021 4,474 9,332 8,606 of which: net brokerage fees 896 1,158 738 2,055 1,486 1 Reflects third-party fee and commission income for the second quarter of 2020 of USD 2,809 million for Global Wealth Management (first quarter of 2020: USD 3,384 million; second quarter of 2019: USD 2,946 million), USD 313 million for Personal & Corporate Banking (first quarter of 2020: USD 354 million; second quarter of 2019: USD 327 million), USD 700 million for Asset Management (first quarter of 2020: USD 702 million; second quarter of 2019: USD 647 million), USD 872 million for the Investment Bank (first quarter of 2020: USD 1,004 million; second quarter of 2019: USD 962 million) and USD 36 million for Group Functions (first quarter of 2020: USD 33 million; second quarter of 2019: USD 25 million).

Other income (Tables)

Other income (Tables)	3 Months Ended
	Jun. 30, 2020
Other Income [Line Items]
Disclosure Of Other Operating Income Explanatory	Note 5 Other income For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Associates, joint ventures and subsidiaries Net gains / (losses) from acquisitions and disposals of subsidiaries 1 (2) 8 10 7 11 Net gains / (losses) from disposals of investments in associates 0 0 0 0 4 Share of net profits of associates and joint ventures 13 16 10 29 25 Impairments related to associates 0 0 (1) 0 (1) Total 11 25 20 36 39 Net gains / (losses) from disposals of financial assets measured at fair value through other comprehensive income 15 9 1 24 2 Income from properties 2 6 7 7 13 13 Net gains / (losses) from properties held for sale 9 0 7 9 7 Other 0 3 70 3 92 Total other income 41 43 105 84 154 1 Includes foreign exchange gains / (losses) reclassified from other comprehensive income related to the disposal or closure of foreign operations. 2 Includes rent received from third parties.

Personnel expenses (Tables)

Personnel expenses (Tables)	3 Months Ended
	Jun. 30, 2020
Personnel Expenses [Line Items]
Disclosure Of Employee Benefits Explanatory	Note 6 Personnel expenses For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Salaries and variable compensation 2,696 2,561 2,523 5,258 4,943 Financial advisor compensation 1 941 1,094 1,005 2,035 1,965 Contractors 91 84 96 176 192 Social security 228 211 195 439 408 Pension and other post-employment benefit plans 202 236 194 438 418 Other personnel expenses 123 135 140 258 269 Total personnel expenses 4,283 4,321 4,153 8,604 8,196 1 Financial advisor compensation consists of grid-based compensation based directly on compensable revenues generated by financial advisors and supplemental compensation calculated on the basis of financial advisor productivity, firm tenure, assets and other variables. It also includes expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements.

General and administrative ex_2

General and administrative expenses (Tables)	3 Months Ended
	Jun. 30, 2020
General And Administrative Expenses [Line Items]
Disclosure Of General And Administrative Expense Explanatory	Note 7 General and administrative expenses For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Occupancy 101 97 91 198 188 Rent and maintenance of IT and other equipment 185 198 168 382 353 Communication and market data services 152 149 157 301 312 Administration 115 148 103 263 226 of which: UK and German bank levies 3 15 (32) 17 (17) Marketing and public relations 1 65 50 72 115 138 Travel and entertainment 31 69 100 101 190 Professional fees 163 160 193 323 370 Outsourcing of IT and other services 228 235 259 463 530 Litigation, regulatory and similar matters 2 2 6 4 8 (4) Other 23 20 28 43 60 Total general and administrative expenses 1,063 1,133 1,175 2,196 2,362 1 Includes charitable donations. 2 Reflects the net increase in / (release of) provisions for litigation, regulatory and similar matters recognized in the income statement. Refer to Note 16 for more information. Also includes recoveries from third parties (second quarter of 2020: USD 0 million; first quarter of 2020: USD 1 million; second quarter of 2019: USD 1 million).

Earnings per share (EPS) and _2

Earnings per share (EPS) and shares outstanding (Tables)	3 Months Ended
	Jun. 30, 2020
Earnings Per Share And Shares Outstanding [Line Items]
Disclosure Of Earnings Per Share Explanatory	As of or for the quarter ended As of or year-to-date 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Basic earnings (USD million) Net profit / (loss) attributable to shareholders 1,232 1,595 1,392 2,827 2,533 Diluted earnings (USD million) Net profit / (loss) attributable to shareholders 1,232 1,595 1,392 2,827 2,533 Less: (profit) / loss on own equity derivative contracts 0 0 0 0 0 Net profit / (loss) attributable to shareholders for diluted EPS 1,232 1,595 1,392 2,827 2,533 Weighted average shares outstanding Weighted average shares outstanding for basic EPS 1 3,584,522,015 3,591,853,051 3,694,660,679 3,588,187,534 3,694,529,827 Effect of dilutive potential shares resulting from notional shares, in-the-money options and warrants outstanding 106,543,728 114,911,986 95,817,338 110,717,626 101,297,249 Weighted average shares outstanding for diluted EPS 3,691,065,743 3,706,765,037 3,790,478,017 3,698,905,160 3,795,827,076 Earnings per share (USD) Basic 0.34 0.44 0.38 0.79 0.69 Diluted 0.33 0.43 0.37 0.76 0.67 Shares outstanding and potentially dilutive instruments Shares issued 3,859,055,395 3,859,055,395 3,859,055,395 3,859,055,395 3,859,055,395 Treasury shares 271,876,346 274,964,517 199,121,101 271,876,346 199,121,101 Shares outstanding 3,587,179,049 3,584,090,878 3,659,934,294 3,587,179,049 3,659,934,294 Potentially dilutive instruments 2 27,456,453 29,801,232 27,263,830 26,911,953 27,239,110 1 The weighted average shares outstanding for basic EPS are calculated by taking the number of shares at the beginning of the period, adjusted by the number of shares acquired or issued during the period, multiplied by a time-weighted factor for the period outstanding. As a result, balances are affected by the timing of acquisitions and issuances during the period. 2 Reflects potential shares that could dilute basic earnings per share in the future, but were not dilutive for the periods presented. It mainly includes equity derivative contracts.

Expected credit loss measurem_2

Expected credit loss measurement (Tables)	3 Months Ended
	Jun. 30, 2020
Disclosure Of Financial Assets [Line Item]
Disclosure Of Key Macro Economic Variables Explanatory	Baseline Key parameters 2020 2021 Real GDP growth (annual % change, annual average) United States (6.4) 4.5 Eurozone (8.2) 6.2 Switzerland (5.5) 4.4 Unemployment rate (annual %, level, 4Q average) United States 14.1 7.8 Eurozone 9.8 6.6 Switzerland 3.9 3.4 Real estate (annual % change, 4Q average) United States (2.8) (1.6) Eurozone (10.2) 8.6 Swiss Single-Family Homes (0.2) 0.5
Disclosure Of Credit Risk Exposure Explanatory	USD million 30.6.20 Carrying amount 1,2 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 149,549 149,549 0 0 0 0 0 0 Loans and advances to banks 15,633 15,534 99 0 (6) (4) (1) (1) Receivables from securities financing transactions 85,271 85,271 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 30,846 30,846 0 0 (1) (1) 0 0 Loans and advances to customers 344,652 318,977 23,673 2,002 (1,089) (134) (236) (719) of which: Private clients with mortgages 137,563 128,527 8,076 960 (157) (25) (93) (39) of which: Real estate financing 40,653 34,083 6,559 11 (55) (10) (42) (4) of which: Large corporate clients 14,376 11,148 2,962 266 (308) (34) (58) (217) of which: SME clients 13,518 7,845 5,177 496 (319) (21) (29) (269) of which: Lombard 116,482 116,292 0 191 (71) (11) 0 (60) of which: Credit cards 1,396 1,065 304 26 (35) (9) (11) (15) of which: Commodity trade finance 3,194 3,155 30 9 (83) (5) 0 (78) Other financial assets measured at amortized cost 27,253 26,107 404 741 (151) (40) (10) (100) of which: Loans to financial advisors 2,673 2,090 201 382 (116) (34) (7) (74) Total financial assets measured at amortized cost 653,205 626,286 24,176 2,743 (1,249) (181) (247) (821) Financial assets measured at fair value through other comprehensive income 8,624 8,624 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 661,829 634,910 24,176 2,743 (1,249) (181) (247) (821) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 16,313 14,768 1,369 176 (47) (11) (4) (32) of which: Large corporate clients 3,494 2,640 733 121 (8) (3) (3) (3) of which: SME clients 1,293 725 514 54 (25) (1) (1) (24) of which: Financial intermediaries and hedge funds 6,964 6,910 54 0 (6) (6) 0 0 of which: Lombard 602 602 0 0 (1) 0 0 (1) of which: Commodity trade finance 1,601 1,583 18 0 (1) (1) 0 0 Irrevocable loan commitments 39,651 34,494 5,044 114 (121) (57) (64) 0 of which: Large corporate clients 23,167 18,284 4,838 45 (109) (50) (59) 0 Forward starting reverse repurchase and securities borrowing agreements 2,210 2,210 0 0 0 0 0 0 Committed unconditionally revocable credit lines 37,822 32,892 4,870 60 (65) (34) (32) 0 of which: Real estate financing 5,666 5,019 647 0 (25) (4) (21) 0 of which: Large corporate clients 4,356 3,482 856 18 (9) (4) (5) 0 of which: SME clients 4,980 2,962 1,984 34 (17) (14) (4) 0 of which: Lombard 9,410 9,410 0 0 (1) (1) 0 0 of which: Credit cards 8,159 7,726 425 8 (10) (7) (2) 0 Irrevocable committed prolongation of existing loans 4,265 4,240 25 1 (7) (7) 0 0 Total off-balance sheet financial instruments and other credit lines 100,262 88,604 11,307 351 (240) (108) (100) (32) Total allowances and provisions (1,489) (289) (346) (853) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. 2 The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs. USD million 31.3.20 Carrying amount 1 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 139,258 139,258 0 0 0 0 0 0 Loans and advances to banks 16,972 16,894 78 0 (6) (4) (1) (1) Receivables from securities financing transactions 89,648 88,394 449 804 (34) (2) (15) (16) Cash collateral receivables on derivative instruments 39,545 39,545 0 0 0 0 0 0 Loans and advances to customers 337,551 320,740 14,896 1,914 (936) (101) (164) (671) of which: Private clients with mortgages 134,759 126,633 7,168 957 (111) (17) (55) (39) of which: Real estate financing 39,097 33,876 5,205 16 (49) (6) (39) (4) of which: Large corporate clients 15,343 14,328 849 166 (191) (21) (35) (134) of which: SME clients 11,943 10,453 1,036 455 (358) (18) (20) (320) of which: Lombard 114,401 114,144 0 258 (56) (10) 0 (46) of which: Credit cards 1,317 985 308 23 (34) (7) (14) (14) of which: Commodity trade finance 2,801 2,778 13 10 (82) (5) 0 (77) Other financial assets measured at amortized cost 23,765 22,820 410 536 (143) (31) (15) (97) of which: Loans to financial advisors 2,699 2,198 303 198 (112) (25) (13) (73) Total financial assets measured at amortized cost 646,739 627,651 15,833 3,255 (1,120) (139) (195) (786) Financial assets measured at fair value through other comprehensive income 7,653 7,653 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 654,392 635,305 15,833 3,255 (1,120) (139) (195) (786) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,830 17,387 361 83 (76) (8) (1) (66) of which: Large corporate clients 3,742 3,471 244 26 (33) (1) 0 (32) of which: SME clients 1,308 1,185 67 56 (28) 0 0 (27) of which: Financial intermediaries and hedge funds 7,965 7,949 16 0 (5) (5) 0 0 of which: Lombard 603 603 0 0 (7) 0 0 (7) of which: Commodity trade finance 1,967 1,951 16 0 (1) (1) 0 0 Irrevocable loan commitments 28,334 27,701 550 84 (46) (34) (13) 0 of which: Large corporate clients 18,224 17,712 453 59 (33) (26) (7) 0 Forward starting reverse repurchase and securities borrowing agreements 5,123 5,123 0 0 0 0 0 0 Committed unconditionally revocable credit lines 34,487 33,509 942 35 (36) (20) (16) 0 of which: Real estate financing 4,989 4,679 310 0 (16) (3) (12) 0 of which: Large corporate clients 3,784 3,697 70 17 (2) (1) 0 0 of which: SME clients 4,644 4,492 133 18 (10) (9) (1) 0 of which: Lombard 7,649 7,649 0 0 0 (1) 0 0 of which: Credit cards 8,295 7,923 371 0 (5) (4) (2) 0 Irrevocable committed prolongation of existing loans 4,040 4,038 0 2 (4) (4) 0 0 Total off-balance sheet financial instruments and other credit lines 89,814 87,757 1,852 204 (162) (66) (29) (66) Total allowances and provisions (1,282) (205) (225) (852) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,447 12,367 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 326,786 309,499 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 22,980 21,953 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 576,815 558,420 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 583,159 564,765 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 85,728 83,626 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. ECL coverage ratios for core loan portfolios 30.6.20 Gross carrying amount (USD million) 1 ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 345,741 319,111 23,909 2,721 32 4 99 2,643 of which: Private clients with mortgages 137,720 128,552 8,169 1,000 11 2 113 394 of which: Real estate financing 40,708 34,093 6,601 15 14 3 63 2,541 of which: Large corporate clients 14,684 11,182 3,020 483 210 30 191 4,488 of which: SME clients 13,837 7,866 5,206 765 231 27 55 3,520 of which: Lombard 116,554 116,303 0 251 6 1 0 2,403 of which: Credit cards 1,430 1,074 315 41 242 81 354 3,569 of which: Commodity trade finance 3,278 3,160 30 87 254 15 8 8,973 Other financial assets measured at amortized cost 27,404 26,148 414 842 55 15 241 1,194 of which: Loans to financial advisors 2,789 2,124 208 456 415 161 347 1,627 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 16,313 14,768 1,369 176 29 7 27 1,831 Irrevocable loan commitments 39,651 34,494 5,044 114 31 16 128 0 Committed unconditionally revocable credit lines 37,822 32,892 4,870 60 17 10 65 0 Irrevocable committed prolongation of existing loans 4,265 4,240 25 1 16 16 15 0 1 The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs. 31.3.20 Gross carrying amount (USD million) ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 338,486 320,841 15,060 2,585 28 3 109 2,596 of which: Private clients with mortgages 134,870 126,650 7,224 996 8 1 77 390 of which: Real estate financing 39,146 33,881 5,245 20 12 2 75 2,047 of which: Large corporate clients 15,534 14,349 885 300 123 15 401 4,476 of which: SME clients 12,301 10,470 1,055 775 291 17 188 4,129 of which: Lombard 114,457 114,154 0 303 5 1 0 1,508 of which: Credit cards 1,351 993 322 37 254 72 420 3,708 of which: Commodity trade finance 2,882 2,783 13 87 283 18 1 8,818 Other financial assets measured at amortized cost 23,908 22,850 425 633 60 13 360 1,531 of which: Loans to financial advisors 2,811 2,224 317 271 397 114 418 2,702 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,830 17,387 361 83 42 5 30 8,045 Irrevocable loan commitments 28,334 27,701 550 84 16 12 228 0 Committed unconditionally revocable credit lines 34,487 33,509 942 35 11 6 168 0 Irrevocable committed prolongation of existing loans 4,040 4,038 0 2 10 10 0 0 31.12.19 Gross carrying amount (USD million) ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 327,550 309,581 15,661 2,308 23 3 79 2,420 of which: Private clients with mortgages 132,756 124,077 7,679 1,000 8 1 72 406 of which: Real estate financing 38,524 32,937 5,567 21 11 2 62 1,765 of which: Large corporate clients 9,819 9,199 429 192 119 16 100 5,088 of which: SME clients 12,089 9,834 1,464 791 251 18 104 3,420 of which: Lombard 112,915 112,799 0 116 2 0 0 1,566 of which: Credit cards 1,696 1,322 339 35 205 60 404 3,718 of which: Commodity trade finance 2,925 2,831 8 87 278 17 3 8,844 Other financial assets measured at amortized cost 23,123 21,988 463 672 62 16 274 1,420 of which: Loans to financial advisors 2,987 2,370 344 272 366 122 305 2,570 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 23 4 30 4,032 Irrevocable loan commitments 27,547 27,078 419 50 13 11 120 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 10 5 143 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 8 8 0 0
Disclosure Of Provision Matrix Explanatory	Note 10 Expected credit loss measurement a) E xpected credit losses in the period Total net credit loss expenses were USD 272 million during the second quarter of 2020, reflecting net expenses of USD 202 million related to stage 1 and 2 positions and net expenses of USD 70 million related to credit-impaired (stage 3) positions. Stage 1 and 2 net credit loss expenses of USD 202 million were primarily driven by a net expense of USD 127 million from an update to the forward-looking scenarios, factoring in updated macroeconomic assumptions to reflect the effects of the COVID-19 pandemic , in particular updated GDP and unemployment assumptions . This also led to exposure movements from stage 1 to stage 2 as probabilities of default increased . The remaining stage 1 and 2 expenses of USD 75 million mainly reflect the effects of expert judgement overlays for select ed exposures to Swiss large corporate s and small and medium-sized entities , as well as remeas urements within our loan book, mainly in the Investment Bank. These were partly offset by recoveries on energy-related exposures and securities financing transactions with a number of real estate investment trusts , where we had increased allowances in the first qu arter of 2020 . Stage 3 net credit loss expenses were USD 70 million. In the Investment Bank, stage 3 net expenses of USD 22 million were driven by USD 38 million of expenses recognized across various positions, partly offset by recoveries on securit ies financing transactions with a number of real estate investment trusts , where we had increased allowances in the first quarter of 2020 . In Group Functions, stage 3 expenses of USD 20 million arose from an energy-related exposure in the Non-core and Legacy Portfolio. In Global Wealth Management, stage 3 net expenses of USD 19 million primarily reflected USD 9 million on a single structured margin - lending position, with the remaining USD 10 million on a number of smaller positions across the portfolios. In Pe rsonal & Corporate Banking, s tage 3 net expenses of USD 10 million arose primarily on two newly defaulted clients in the corporate lending portfolio . b) Changes to ECL models, scenarios, scenario weights and key inputs The outlook for the global economy has deteriorated markedly since the end of 2019 as a result of the COVID-19 outbreak. C OVID -19 and related lockdown measures have significantly impacted major economies across the world. Uncertainties are still at a high level , making predictions difficult and displaying several potential triggers for further negative developments. S cenarios and scenario weights For the second quarter of 2020, the two scenarios and related macroeconomic factors that were applied in the first quarter of 2020 were reviewed in light of the economic and political conditions prevailing at 30 June 2020 through a series of extraordinary gov ernance meetings, with input from UBS risk and finance experts across the regions and business divisions. The key aspects of the narratives for the scenarios are summarized below. – The baseline scenario was updated for 30 June 2020 and takes into account a significant deterioration of GDP in relevant markets. GDP in the US and Switzerland is expected to decline by around 6. 4 % and 5.5% , respectively , in 2020 – this reflects a very significant drop in the first half of 2020 and an expected sequential rebound of about 4% and 8% , respectively , in the second half of the year. The Eurozone also experiences a very severe contraction in economic activity in 2020, with a n 8.2% dec line in GDP. In addition, t he baseline reflects the sharp increase in unemployment observed in the first half of 2020, with unemployment expected to remain at around 14% in the US and to rise to just below 4% in Switzerland by the end of 2020. Housing prices are assumed to be largely flat in Switzerland but to decrease in the US, by around 4% over the two years 2020 and 2021 in cumulative terms. Overall, economic improvements are expected to take place in 2021, with GDP expected to increase by around 4% in both the US and Switzerland. – The global crisis scenario ( also known as the severe downside scenario) was updated during the second quarter of 2020 to account for updated market data and the impact of the COVID-19 outbreak . The scenario assumptions are considered to be consistent with assumptions for COVID-19 - related disruption but to a significantly more adverse degree than what is considered under the baseline scenario , with a full - year GDP contraction expected to continue into 2021 and only a moderate recovery starting from the end of 2021. Relative to their values at the end of the first quarter of 2020 and considering the period until the end of the first quarter of 2021, GDP is assumed to decline by more than 11% in both the US and Switzerland and unemployment to remain elevated, with a peak above 17% and 6% in the US and Switzerland, respectively. Housing prices also decline significantly, by almost 14% and 20% in the US and Switzerland , respectively . – Given the evolving pandemic, management assessed in the first quarter of 2020 whether an interim review of the upside (asset price inflation) and mild downside (monetary-tightening) scenarios, both of which were applied at the end of 2019, would be warranted, as these scenarios became less probable in the specific circumstances. This assessment was reviewed during the second qu arter of 2020 and , consistent with the first quarter, management agreed that the upside and the mild downside narratives should remain in place, as they may become relevant again once there is more clarity on COVID-19 ; however, their probability weights should be temporarily set to zero given ( i ) there are too many uncertainties and lack of supportable information on precedent cases that could be used for modeling narratives and economic shock factors, and (ii) the probability weight estimation would have b een speculative. This assessment will be reviewed in the third quarter of 2020 . Baseline Key parameters 2020 2021 Real GDP growth (annual % change, annual average) United States (6.4) 4.5 Eurozone (8.2) 6.2 Switzerland (5.5) 4.4 Unemployment rate (annual %, level, 4Q average) United States 14.1 7.8 Eurozone 9.8 6.6 Switzerland 3.9 3.4 Real estate (annual % change, 4Q average) United States (2.8) (1.6) Eurozone (10.2) 8.6 Swiss Single-Family Homes (0.2) 0.5 As a consequence of the exceptional circumstances and prevailing uncertainties at the end of the second quarter of 2020, UBS decided to keep the weight allocation consistent with the decision made in the first quarter of 2020, with a 70% weighting assigned to the baseline and a 30% weighting assigned to the global crisis scenario. Ov erall, these weights still reflect the current sentiment regarding the boundaries of economic outcomes, with a bias toward the updated baseline scenario, but give sufficient credence to the global crisis scenario, thereby accounting for the prospect that t he pandemic may not be contained effectively. E c onomic scenarios and weights applied ECL scenario Assigned weights in % 30.6.20 31.3.20 31. 12 . 19 Upside 0.0 0.0 7.5 Baseline 70.0 70.0 42.5 Mild downside 0.0 0.0 35.0 Global crisis 30.0 30.0 15.0 Sensitivity to different scenario weight combinations and ”pro forma all-stage-2” measurement E xpected credit loss (E CL ) is sensitive to changing scenario weights, in particular if narratives and parameters are selected that are not close to the baseline s cenario, highlighting the non-linearity of credit losses. UBS reported USD 636 million of ECL allowances and provisions for stage 1 or 2 positions at the end of the second quarter of 2020. If UBS had applied a 100% weight to the baseline scenario or 100% w eight to the global crisis scenario, ECL allowances and provisions would have been approximately USD 0.5 billion and USD 1. 2 b illion , respectively. A s a way of compar ing IFRS 9 to its US GAAP equivalent standard, i f all stage 1 and 2 positions across the p ortfolio had been measured for lifetime ECL irrespective of whether there was a significant increase in credit risk ( SICR ) status , with a 70% weight applied to the baseline and 30% to the global crisis scenario , ECL allowances and provisions for positions not subject to credit-impairment would have been approximately USD 1. 5 billion . c) ECL-relevant balance sheet and off-balance sheet positions including ECL allowances and provisions The tables set out below and on the following pages provide information about financial instruments and certain non-financial instruments that are subject to ECL. For amortized-cost i nstruments, the carrying amount represents the maximum exposure to credit risk, taking into account the allowance for credit losses. Financial assets measured at fair value through other comprehensive income (FVOCI) are also subject to ECL; however, unlike amortized-cost instruments, the allowance for credit losses for FVOCI instruments does not reduce the carrying value of these financial assets. Rather, the carrying value of financial assets measured at FVOCI represents the maximum exposure to credit risk . In addition to on-balance sheet financial assets, certain off-balance sheet and other credit lines are also subject to ECL. The maximum exposure to credit risk for off-balance sheet financial instruments is calculated based on the maximum contractual amo unts. USD million 30.6.20 Carrying amount 1,2 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 149,549 149,549 0 0 0 0 0 0 Loans and advances to banks 15,633 15,534 99 0 (6) (4) (1) (1) Receivables from securities financing transactions 85,271 85,271 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 30,846 30,846 0 0 (1) (1) 0 0 Loans and advances to customers 344,652 318,977 23,673 2,002 (1,089) (134) (236) (719) of which: Private clients with mortgages 137,563 128,527 8,076 960 (157) (25) (93) (39) of which: Real estate financing 40,653 34,083 6,559 11 (55) (10) (42) (4) of which: Large corporate clients 14,376 11,148 2,962 266 (308) (34) (58) (217) of which: SME clients 13,518 7,845 5,177 496 (319) (21) (29) (269) of which: Lombard 116,482 116,292 0 191 (71) (11) 0 (60) of which: Credit cards 1,396 1,065 304 26 (35) (9) (11) (15) of which: Commodity trade finance 3,194 3,155 30 9 (83) (5) 0 (78) Other financial assets measured at amortized cost 27,253 26,107 404 741 (151) (40) (10) (100) of which: Loans to financial advisors 2,673 2,090 201 382 (116) (34) (7) (74) Total financial assets measured at amortized cost 653,205 626,286 24,176 2,743 (1,249) (181) (247) (821) Financial assets measured at fair value through other comprehensive income 8,624 8,624 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 661,829 634,910 24,176 2,743 (1,249) (181) (247) (821) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 16,313 14,768 1,369 176 (47) (11) (4) (32) of which: Large corporate clients 3,494 2,640 733 121 (8) (3) (3) (3) of which: SME clients 1,293 725 514 54 (25) (1) (1) (24) of which: Financial intermediaries and hedge funds 6,964 6,910 54 0 (6) (6) 0 0 of which: Lombard 602 602 0 0 (1) 0 0 (1) of which: Commodity trade finance 1,601 1,583 18 0 (1) (1) 0 0 Irrevocable loan commitments 39,651 34,494 5,044 114 (121) (57) (64) 0 of which: Large corporate clients 23,167 18,284 4,838 45 (109) (50) (59) 0 Forward starting reverse repurchase and securities borrowing agreements 2,210 2,210 0 0 0 0 0 0 Committed unconditionally revocable credit lines 37,822 32,892 4,870 60 (65) (34) (32) 0 of which: Real estate financing 5,666 5,019 647 0 (25) (4) (21) 0 of which: Large corporate clients 4,356 3,482 856 18 (9) (4) (5) 0 of which: SME clients 4,980 2,962 1,984 34 (17) (14) (4) 0 of which: Lombard 9,410 9,410 0 0 (1) (1) 0 0 of which: Credit cards 8,159 7,726 425 8 (10) (7) (2) 0 Irrevocable committed prolongation of existing loans 4,265 4,240 25 1 (7) (7) 0 0 Total off-balance sheet financial instruments and other credit lines 100,262 88,604 11,307 351 (240) (108) (100) (32) Total allowances and provisions (1,489) (289) (346) (853) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. 2 The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs. USD million 31.3.20 Carrying amount 1 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 139,258 139,258 0 0 0 0 0 0 Loans and advances to banks 16,972 16,894 78 0 (6) (4) (1) (1) Receivables from securities financing transactions 89,648 88,394 449 804 (34) (2) (15) (16) Cash collateral receivables on derivative instruments 39,545 39,545 0 0 0 0 0 0 Loans and advances to customers 337,551 320,740 14,896 1,914 (936) (101) (164) (671) of which: Private clients with mortgages 134,759 126,633 7,168 957 (111) (17) (55) (39) of which: Real estate financing 39,097 33,876 5,205 16 (49) (6) (39) (4) of which: Large corporate clients 15,343 14,328 849 166 (191) (21) (35) (134) of which: SME clients 11,943 10,453 1,036 455 (358) (18) (20) (320) of which: Lombard 114,401 114,144 0 258 (56) (10) 0 (46) of which: Credit cards 1,317 985 308 23 (34) (7) (14) (14) of which: Commodity trade finance 2,801 2,778 13 10 (82) (5) 0 (77) Other financial assets measured at amortized cost 23,765 22,820 410 536 (143) (31) (15) (97) of which: Loans to financial advisors 2,699 2,198 303 198 (112) (25) (13) (73) Total financial assets measured at amortized cost 646,739 627,651 15,833 3,255 (1,120) (139) (195) (786) Financial assets measured at fair value through other comprehensive income 7,653 7,653 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 654,392 635,305 15,833 3,255 (1,120) (139) (195) (786) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,830 17,387 361 83 (76) (8) (1) (66) of which: Large corporate clients 3,742 3,471 244 26 (33) (1) 0 (32) of which: SME clients 1,308 1,185 67 56 (28) 0 0 (27) of which: Financial intermediaries and hedge funds 7,965 7,949 16 0 (5) (5) 0 0 of which: Lombard 603 603 0 0 (7) 0 0 (7) of which: Commodity trade finance 1,967 1,951 16 0 (1) (1) 0 0 Irrevocable loan commitments 28,334 27,701 550 84 (46) (34) (13) 0 of which: Large corporate clients 18,224 17,712 453 59 (33) (26) (7) 0 Forward starting reverse repurchase and securities borrowing agreements 5,123 5,123 0 0 0 0 0 0 Committed unconditionally revocable credit lines 34,487 33,509 942 35 (36) (20) (16) 0 of which: Real estate financing 4,989 4,679 310 0 (16) (3) (12) 0 of which: Large corporate clients 3,784 3,697 70 17 (2) (1) 0 0 of which: SME clients 4,644 4,492 133 18 (10) (9) (1) 0 of which: Lombard 7,649 7,649 0 0 0 (1) 0 0 of which: Credit cards 8,295 7,923 371 0 (5) (4) (2) 0 Irrevocable committed prolongation of existing loans 4,040 4,038 0 2 (4) (4) 0 0 Total off-balance sheet financial instruments and other credit lines 89,814 87,757 1,852 204 (162) (66) (29) (66) Total allowances and provisions (1,282) (205) (225) (852) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,447 12,367 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 326,786 309,499 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 22,980 21,953 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 576,815 558,420 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 583,159 564,765 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 85,728 83,626 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. The table below provides information about the ECL gross exposure and the ECL coverage ratio for our core loan portfolios: Loans and advances to customers, Other financial assets measured at amortized cost and relevant Off-balance sheet exposures. Cash and balances at cen tral banks, Loans and advances to banks, Receivables from securities financing transactions, Cash collateral receivables on derivative instruments, and Financial assets measured at fair value through other comprehensive income are not included in the table below due to their lower sensitivity to ECL. ECL coverage ratios are calculated by taking ECL allowances and provisions divided by the gross carrying amount of the exposures. ECL coverage ratios for core loan portfolios 30.6.20 Gross carrying amount (USD million) 1 ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 345,741 319,111 23,909 2,721 32 4 99 2,643 of which: Private clients with mortgages 137,720 128,552 8,169 1,000 11 2 113 394 of which: Real estate financing 40,708 34,093 6,601 15 14 3 63 2,541 of which: Large corporate clients 14,684 11,182 3,020 483 210 30 191 4,488 of which: SME clients 13,837 7,866 5,206 765 231 27 55 3,520 of which: Lombard 116,554 116,303 0 251 6 1 0 2,403 of which: Credit cards 1,430 1,074 315 41 242 81 354 3,569 of which: Commodity trade finance 3,278 3,160 30 87 254 15 8 8,973 Other financial assets measured at amortized cost 27,404 26,148 414 842 55 15 241 1,194 of which: Loans to financial advisors 2,789 2,124 208 456 415 161 347 1,627 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 16,313 14,768 1,369 176 29 7 27 1,831 Irrevocable loan commitments 39,651 34,494 5,044 114 31 16 128 0 Committed unconditionally revocable credit lines 37,822 32,892 4,870 60 17 10 65 0 Irrevocable committed prolongation of existing loans 4,265 4,240 25 1 16 16 15 0 1 The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs. 31.3.20 Gross carrying amount (USD million) ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 338,486 320,841 15,060 2,585 28 3 109 2,596 of which: Private clients with mortgages 134,870 126,650 7,224 996 8 1 77 390 of which: Real estate financing 39,146 33,881 5,245 20 12 2 75 2,047 of which: Large corporate clients 15,534 14,349 885 300 123 15 401 4,476 of which: SME clients 12,301 10,470 1,055 775 291 17 188 4,129 of which: Lombard 114,457 114,154 0 303 5 1 0 1,508 of which: Credit cards 1,351 993 322 37 254 72 420 3,708 of which: Commodity trade finance 2,882 2,783 13 87 283 18 1 8,818 Other financial assets measured at amortized cost 23,908 22,850 425 633 60 13 360 1,531 of which: Loans to financial advisors 2,811 2,224 317 271 397 114 418 2,702 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,830 17,387 361 83 42 5 30 8,045 Irrevocable loan commitments 28,334 27,701 550 84 16 12 228 0 Committed unconditionally revocable credit lines 34,487 33,509 942 35 11 6 168 0 Irrevocable committed prolongation of existing loans 4,040 4,038 0 2 10 10 0 0 31.12.19 Gross carrying amount (USD million) ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 327,550 309,581 15,661 2,308 23 3 79 2,420 of which: Private clients with mortgages 132,756 124,077 7,679 1,000 8 1 72 406 of which: Real estate financing 38,524 32,937 5,567 21 11 2 62 1,765 of which: Large corporate clients 9,819 9,199 429 192 119 16 100 5,088 of which: SME clients 12,089 9,834 1,464 791 251 18 104 3,420 of which: Lombard 112,915 112,799 0 116 2 0 0 1,566 of which: Credit cards 1,696 1,322 339 35 205 60 404 3,718 of which: Commodity trade finance 2,925 2,831 8 87 278 17 3 8,844 Other financial assets measured at amortized cost 23,123 21,988 463 672 62 16 274 1,420 of which: Loans to financial advisors 2,987 2,370 344 272 366 122 305 2,570 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 23 4 30 4,032 Irrevocable loan commitments 27,547 27,078 419 50 13 11 120 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 10 5 143 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 8 8 0 0

Fair value measurement (Tables)

Fair value measurement (Tables)	3 Months Ended
	Jun. 30, 2020
Fair ValueMeasurement [Line Items]
Disclosure Of Fair Value Measurement Of Assets Explanatory	Determination of fair values from quoted market prices or valuation techniques 1 30.6.20 31.3.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial assets measured at fair value on a recurring basis Financial assets at fair value held for trading 82,057 13,279 2,710 98,046 73,693 14,779 2,018 90,490 113,634 12,068 1,812 127,514 of which: Equity instruments 64,174 710 76 64,960 54,966 535 185 55,686 96,161 400 226 96,787 Government bills / bonds 11,057 2,272 10 13,339 11,017 2,826 9 13,852 9,630 1,770 64 11,464 Investment fund units 6,282 1,744 27 8,053 7,077 1,556 21 8,654 7,088 1,729 50 8,867 Corporate and municipal bonds 537 7,296 779 8,612 618 8,230 498 9,346 755 6,617 542 7,914 Loans 0 980 1,600 2,580 0 1,205 1,120 2,325 0 1,180 791 1,971 Asset-backed securities 7 277 218 501 16 428 184 628 0 372 140 512 Derivative financial instruments 868 149,599 1,541 152,008 1,193 209,344 2,445 212,982 356 120,222 1,264 121,841 of which: Foreign exchange contracts 472 53,316 7 53,795 635 94,070 26 94,730 240 52,227 8 52,474 Interest rate contracts 25 55,147 330 55,502 20 55,398 418 55,836 6 42,288 263 42,558 Equity / index contracts 0 36,195 795 36,991 4 53,989 1,301 55,294 7 22,220 597 22,825 Credit derivative contracts 0 1,540 405 1,945 0 1,574 669 2,243 0 1,612 394 2,007 Commodity contracts 0 3,302 1 3,304 0 3,909 6 3,915 0 1,820 0 1,821 Brokerage receivables 0 19,848 0 19,848 0 20,319 0 20,319 0 18,007 0 18,007 Financial assets at fair value not held for trading 49,389 41,168 3,735 94,292 39,666 39,388 3,699 82,753 40,608 39,373 3,963 83,944 of which: Financial assets for unit-linked investment contracts 26,387 0 5 26,392 22,826 0 0 22,826 27,568 118 0 27,686 Corporate and municipal bonds 578 20,737 0 21,316 655 19,753 0 20,408 653 18,732 0 19,385 Government bills / bonds 22,175 4,540 0 26,714 15,954 3,853 0 19,808 12,089 3,700 0 15,790 Loans 0 8,317 1,024 9,340 0 8,390 1,081 9,470 0 10,206 1,231 11,438 Securities financing transactions 0 7,163 126 7,289 0 6,909 147 7,056 0 6,148 147 6,294 Auction rate securities 0 0 1,393 1,393 0 0 1,393 1,393 0 0 1,536 1,536 Investment fund units 188 396 103 688 138 395 107 641 194 448 98 740 Equity instruments 61 0 545 606 93 3 454 549 103 4 452 559 Other 0 13 540 553 0 84 518 602 0 16 499 515 Financial assets measured at fair value through other comprehensive income on a recurring basis Financial assets measured at fair value through other comprehensive income 1,551 7,074 0 8,624 1,651 6,002 0 7,653 1,906 4,439 0 6,345 of which: Asset-backed securities 0 6,634 0 6,634 0 5,507 0 5,507 0 3,955 0 3,955 Government bills / bonds 1,515 98 0 1,612 1,613 92 0 1,705 1,859 16 0 1,875 Corporate and municipal bonds 36 341 0 378 38 404 0 441 47 468 0 515 Non-financial assets measured at fair value on a recurring basis Precious metals and other physical commodities 4,890 0 0 4,890 4,050 0 0 4,050 4,597 0 0 4,597 Non-financial assets measured at fair value on a non-recurring basis Other non-financial assets 2 0 0 130 130 0 0 202 202 0 0 199 199 Total assets measured at fair value 138,755 230,968 8,116 377,839 120,253 289,832 8,364 418,449 161,101 194,110 7,237 362,448 Determination of fair values from quoted market prices or valuation techniques (continued) 1 30.6.20 31.3.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial liabilities measured at fair value on a recurring basis Financial liabilities at fair value held for trading 28,216 6,093 117 34,426 26,965 5,463 143 32,571 25,791 4,726 75 30,591 of which: Equity instruments 23,464 306 76 23,846 22,289 282 26 22,598 22,526 149 59 22,734 Corporate and municipal bonds 38 4,558 39 4,635 22 3,921 74 4,018 40 3,606 16 3,661 Government bills / bonds 4,052 770 0 4,822 3,880 710 0 4,590 2,820 646 0 3,466 Investment fund units 662 431 2 1,096 774 532 43 1,349 404 294 0 698 Derivative financial instruments 871 148,116 3,293 152,280 1,246 201,770 3,633 206,649 385 118,498 1,996 120,880 of which: Foreign exchange contracts 447 54,385 67 54,899 636 92,515 65 93,217 248 53,705 60 54,013 Interest rate contracts 7 49,048 838 49,894 6 49,776 892 50,674 7 36,434 130 36,571 Equity / index contracts 0 39,622 1,445 41,067 4 53,968 1,557 55,528 3 24,171 1,293 25,468 Credit derivative contracts 0 1,781 917 2,698 0 1,875 1,065 2,940 0 2,448 512 2,960 Commodity contracts 0 3,128 10 3,138 0 3,437 0 3,438 0 1,707 0 1,707 Financial liabilities designated at fair value on a recurring basis Brokerage payables designated at fair value 0 40,248 0 40,248 0 37,652 0 37,652 0 37,233 0 37,233 Debt issued designated at fair value 0 49,123 9,741 58,864 0 46,013 7,286 53,299 0 56,943 9,866 66,809 Other financial liabilities designated at fair value 0 36,757 1,145 37,902 0 30,309 1,227 31,536 0 35,119 822 35,940 of which: Financial liabilities related to unit-linked investment contracts 0 26,573 0 26,573 0 23,150 0 23,150 0 28,145 0 28,145 Securities financing transactions 0 8,371 0 8,371 0 5,992 0 5,992 0 5,742 0 5,742 Over-the-counter debt instruments 0 1,796 1,057 2,852 0 1,159 1,138 2,297 0 1,231 791 2,022 Total liabilities measured at fair value 29,087 280,337 14,296 323,721 28,211 321,207 12,289 361,707 26,176 252,518 12,759 291,452 1 Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented. 2 Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at fair value less costs to sell as a result of meeting the held-for-sale criteria.
Disclosure Of Fair Value Measurement Of Liabilities Explanatory	Determination of fair values from quoted market prices or valuation techniques 1 30.6.20 31.3.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial assets measured at fair value on a recurring basis Financial assets at fair value held for trading 82,057 13,279 2,710 98,046 73,693 14,779 2,018 90,490 113,634 12,068 1,812 127,514 of which: Equity instruments 64,174 710 76 64,960 54,966 535 185 55,686 96,161 400 226 96,787 Government bills / bonds 11,057 2,272 10 13,339 11,017 2,826 9 13,852 9,630 1,770 64 11,464 Investment fund units 6,282 1,744 27 8,053 7,077 1,556 21 8,654 7,088 1,729 50 8,867 Corporate and municipal bonds 537 7,296 779 8,612 618 8,230 498 9,346 755 6,617 542 7,914 Loans 0 980 1,600 2,580 0 1,205 1,120 2,325 0 1,180 791 1,971 Asset-backed securities 7 277 218 501 16 428 184 628 0 372 140 512 Derivative financial instruments 868 149,599 1,541 152,008 1,193 209,344 2,445 212,982 356 120,222 1,264 121,841 of which: Foreign exchange contracts 472 53,316 7 53,795 635 94,070 26 94,730 240 52,227 8 52,474 Interest rate contracts 25 55,147 330 55,502 20 55,398 418 55,836 6 42,288 263 42,558 Equity / index contracts 0 36,195 795 36,991 4 53,989 1,301 55,294 7 22,220 597 22,825 Credit derivative contracts 0 1,540 405 1,945 0 1,574 669 2,243 0 1,612 394 2,007 Commodity contracts 0 3,302 1 3,304 0 3,909 6 3,915 0 1,820 0 1,821 Brokerage receivables 0 19,848 0 19,848 0 20,319 0 20,319 0 18,007 0 18,007 Financial assets at fair value not held for trading 49,389 41,168 3,735 94,292 39,666 39,388 3,699 82,753 40,608 39,373 3,963 83,944 of which: Financial assets for unit-linked investment contracts 26,387 0 5 26,392 22,826 0 0 22,826 27,568 118 0 27,686 Corporate and municipal bonds 578 20,737 0 21,316 655 19,753 0 20,408 653 18,732 0 19,385 Government bills / bonds 22,175 4,540 0 26,714 15,954 3,853 0 19,808 12,089 3,700 0 15,790 Loans 0 8,317 1,024 9,340 0 8,390 1,081 9,470 0 10,206 1,231 11,438 Securities financing transactions 0 7,163 126 7,289 0 6,909 147 7,056 0 6,148 147 6,294 Auction rate securities 0 0 1,393 1,393 0 0 1,393 1,393 0 0 1,536 1,536 Investment fund units 188 396 103 688 138 395 107 641 194 448 98 740 Equity instruments 61 0 545 606 93 3 454 549 103 4 452 559 Other 0 13 540 553 0 84 518 602 0 16 499 515 Financial assets measured at fair value through other comprehensive income on a recurring basis Financial assets measured at fair value through other comprehensive income 1,551 7,074 0 8,624 1,651 6,002 0 7,653 1,906 4,439 0 6,345 of which: Asset-backed securities 0 6,634 0 6,634 0 5,507 0 5,507 0 3,955 0 3,955 Government bills / bonds 1,515 98 0 1,612 1,613 92 0 1,705 1,859 16 0 1,875 Corporate and municipal bonds 36 341 0 378 38 404 0 441 47 468 0 515 Non-financial assets measured at fair value on a recurring basis Precious metals and other physical commodities 4,890 0 0 4,890 4,050 0 0 4,050 4,597 0 0 4,597 Non-financial assets measured at fair value on a non-recurring basis Other non-financial assets 2 0 0 130 130 0 0 202 202 0 0 199 199 Total assets measured at fair value 138,755 230,968 8,116 377,839 120,253 289,832 8,364 418,449 161,101 194,110 7,237 362,448 Determination of fair values from quoted market prices or valuation techniques (continued) 1 30.6.20 31.3.20 31.12.19 USD million Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial liabilities measured at fair value on a recurring basis Financial liabilities at fair value held for trading 28,216 6,093 117 34,426 26,965 5,463 143 32,571 25,791 4,726 75 30,591 of which: Equity instruments 23,464 306 76 23,846 22,289 282 26 22,598 22,526 149 59 22,734 Corporate and municipal bonds 38 4,558 39 4,635 22 3,921 74 4,018 40 3,606 16 3,661 Government bills / bonds 4,052 770 0 4,822 3,880 710 0 4,590 2,820 646 0 3,466 Investment fund units 662 431 2 1,096 774 532 43 1,349 404 294 0 698 Derivative financial instruments 871 148,116 3,293 152,280 1,246 201,770 3,633 206,649 385 118,498 1,996 120,880 of which: Foreign exchange contracts 447 54,385 67 54,899 636 92,515 65 93,217 248 53,705 60 54,013 Interest rate contracts 7 49,048 838 49,894 6 49,776 892 50,674 7 36,434 130 36,571 Equity / index contracts 0 39,622 1,445 41,067 4 53,968 1,557 55,528 3 24,171 1,293 25,468 Credit derivative contracts 0 1,781 917 2,698 0 1,875 1,065 2,940 0 2,448 512 2,960 Commodity contracts 0 3,128 10 3,138 0 3,437 0 3,438 0 1,707 0 1,707 Financial liabilities designated at fair value on a recurring basis Brokerage payables designated at fair value 0 40,248 0 40,248 0 37,652 0 37,652 0 37,233 0 37,233 Debt issued designated at fair value 0 49,123 9,741 58,864 0 46,013 7,286 53,299 0 56,943 9,866 66,809 Other financial liabilities designated at fair value 0 36,757 1,145 37,902 0 30,309 1,227 31,536 0 35,119 822 35,940 of which: Financial liabilities related to unit-linked investment contracts 0 26,573 0 26,573 0 23,150 0 23,150 0 28,145 0 28,145 Securities financing transactions 0 8,371 0 8,371 0 5,992 0 5,992 0 5,742 0 5,742 Over-the-counter debt instruments 0 1,796 1,057 2,852 0 1,159 1,138 2,297 0 1,231 791 2,022 Total liabilities measured at fair value 29,087 280,337 14,296 323,721 28,211 321,207 12,289 361,707 26,176 252,518 12,759 291,452 1 Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented. 2 Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at fair value less costs to sell as a result of meeting the held-for-sale criteria.
Disclosure Of Deferred Day-One Profit Or Loss Explanatory	Deferred day-1 profit or loss reserves For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Reserve balance at the beginning of the period 194 146 161 146 255 Profit / (loss) deferred on new transactions 121 118 58 239 90 (Profit) / loss recognized in the income statement (72) (69) (60) (141) (187) Foreign currency translation 0 (1) 0 (1) (1) Reserve balance at the end of the period 243 194 158 243 158
Own credit adjustments on financial liabilities designated at fair value	Own credit adjustments on financial liabilities designated at fair value Included in Other comprehensive income For the quarter ended Year-to-date USD million 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 Recognized during the period: Realized gain / (loss) 8 1 6 9 6 Unrealized gain / (loss) (1,103) 1,156 66 53 (260) Total gain / (loss), before tax (1,095) 1,156 72 62 (254) As of USD million 30.6.20 31.3.20 30.6.19 Recognized on the balance sheet as of the end of the period: Unrealized life-to-date gain / (loss) (31) 1,069 60
Valuation adjustments on financial instruments	Valuation adjustments on financial instruments As of Life-to-date gain / (loss), USD million 30.6.20 31.3.20 31.12.19 Credit valuation adjustments 1 (78) (92) (48) Funding valuation adjustments 2 (141) (378) (93) Debit valuation adjustments 1 2 1 Other valuation adjustments (715) (879) (566) of which: liquidity (385) (536) (300) of which: model uncertainty (330) (343) (266) 1 Amounts do not include reserves against defaulted counterparties. 2 Includes FVAs on structured financing transactions of USD 44 million as of 30 June 2020, USD 194 million as of 31 March 2020 and USD 43 million as of 31 December 2019.
Not measured at fair value
Fair ValueMeasurement [Line Items]
Disclosure Of Fair Value Measurement Of Assets Explanatory	Financial instruments not measured at fair value 30.6.20 31.3.20 31.12.19 USD billion Carrying amount Fair value Carrying amount Fair value Carrying amount Fair value Assets Cash and balances at central banks 149.5 149.5 139.3 139.3 107.1 107.1 Loans and advances to banks 15.6 15.6 17.0 17.0 12.4 12.4 Receivables from securities financing transactions 85.3 85.3 89.6 89.7 84.2 84.2 Cash collateral receivables on derivative instruments 30.8 30.8 39.5 39.5 23.3 23.3 Loans and advances to customers 344.7 344.7 337.6 339.4 326.8 329.1 Other financial assets measured at amortized cost 27.3 27.8 23.8 24.5 23.0 23.2 Liabilities Amounts due to banks 12.4 12.4 18.8 18.8 6.6 6.6 Payables from securities financing transactions 12.0 12.0 12.9 12.9 7.8 7.8 Cash collateral payables on derivative instruments 36.9 36.9 45.6 45.6 31.4 31.4 Customer deposits 474.3 474.4 465.9 466.1 448.3 448.4 Debt issued measured at amortized cost 126.7 127.8 115.4 113.0 110.5 113.6 Other financial liabilities measured at amortized cost 1 5.8 5.8 6.1 6.1 5.8 5.7 1 Excludes lease liabilities.
Disclosure Of Fair Value Measurement Of Liabilities Explanatory	Financial instruments not measured at fair value 30.6.20 31.3.20 31.12.19 USD billion Carrying amount Fair value Carrying amount Fair value Carrying amount Fair value Assets Cash and balances at central banks 149.5 149.5 139.3 139.3 107.1 107.1 Loans and advances to banks 15.6 15.6 17.0 17.0 12.4 12.4 Receivables from securities financing transactions 85.3 85.3 89.6 89.7 84.2 84.2 Cash collateral receivables on derivative instruments 30.8 30.8 39.5 39.5 23.3 23.3 Loans and advances to customers 344.7 344.7 337.6 339.4 326.8 329.1 Other financial assets measured at amortized cost 27.3 27.8 23.8 24.5 23.0 23.2 Liabilities Amounts due to banks 12.4 12.4 18.8 18.8 6.6 6.6 Payables from securities financing transactions 12.0 12.0 12.9 12.9 7.8 7.8 Cash collateral payables on derivative instruments 36.9 36.9 45.6 45.6 31.4 31.4 Customer deposits 474.3 474.4 465.9 466.1 448.3 448.4 Debt issued measured at amortized cost 126.7 127.8 115.4 113.0 110.5 113.6 Other financial liabilities measured at amortized cost 1 5.8 5.8 6.1 6.1 5.8 5.7 1 Excludes lease liabilities.
Level 3
Fair ValueMeasurement [Line Items]
Disclosure Of Fair Value Measurement Of Assets Explanatory	Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 30.6.20 31.12.19 USD billion 30.6.20 31.12.19 30.6.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 0.8 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 0 143 101 0 143 101 points Traded loans, loans designated at fair value, loan commitments and guarantees 3.1 2.4 0.1 0.0 Relative value to market comparable Loan price equivalent 0 100 99 0 101 99 points Discounted expected cash flows Credit spread 250 1,000 225 530 basis points Market comparable and securitization model Discount margin 1 19 3 0 14 2 % Auction rate securities 1.4 1.5 Relative value to market comparable Bond price equivalent 79 91 80 79 98 88 points Investment fund units 3 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 3 0.6 0.7 0.1 0.1 Relative value to market comparable Price Debt issued designated at fair value 4 9.7 9.9 Other financial liabilities designated at fair value 1.1 0.8 Discounted expected cash flows Funding spread 44 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.3 0.3 0.8 0.1 Option model Volatility of interest rates 33 80 15 63 basis points Credit derivative contracts 0.4 0.4 0.9 0.5 Discounted expected cash flows Credit spreads (2) 558 1 700 basis points Bond price equivalent 0 113 0 100 points Equity / index contracts 0.8 0.6 1.4 1.3 Option model Equity dividend yields 0 14 0 14 % Volatility of equity stocks, equity and other indices 4 125 4 105 % Equity-to-FX correlation (45) 61 (45) 71 % Equity-to-equity correlation (17) 99 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts as this would not be meaningful. 3 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 4 Valuation techniques, significant unobservable inputs and the respective input ranges for Debt issued designated at fair value are the same as the equivalent derivative instruments presented elsewhere in this table.
Disclosure Of Fair Value Measurement Of Liabilities Explanatory	Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 30.6.20 31.12.19 USD billion 30.6.20 31.12.19 30.6.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 0.8 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 0 143 101 0 143 101 points Traded loans, loans designated at fair value, loan commitments and guarantees 3.1 2.4 0.1 0.0 Relative value to market comparable Loan price equivalent 0 100 99 0 101 99 points Discounted expected cash flows Credit spread 250 1,000 225 530 basis points Market comparable and securitization model Discount margin 1 19 3 0 14 2 % Auction rate securities 1.4 1.5 Relative value to market comparable Bond price equivalent 79 91 80 79 98 88 points Investment fund units 3 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 3 0.6 0.7 0.1 0.1 Relative value to market comparable Price Debt issued designated at fair value 4 9.7 9.9 Other financial liabilities designated at fair value 1.1 0.8 Discounted expected cash flows Funding spread 44 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.3 0.3 0.8 0.1 Option model Volatility of interest rates 33 80 15 63 basis points Credit derivative contracts 0.4 0.4 0.9 0.5 Discounted expected cash flows Credit spreads (2) 558 1 700 basis points Bond price equivalent 0 113 0 100 points Equity / index contracts 0.8 0.6 1.4 1.3 Option model Equity dividend yields 0 14 0 14 % Volatility of equity stocks, equity and other indices 4 125 4 105 % Equity-to-FX correlation (45) 61 (45) 71 % Equity-to-equity correlation (17) 99 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts as this would not be meaningful. 3 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 4 Valuation techniques, significant unobservable inputs and the respective input ranges for Debt issued designated at fair value are the same as the equivalent derivative instruments presented elsewhere in this table.
Disclosure of significant unobservable inputs used in fair value measurement of assets [text block]	Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 30.6.20 31.12.19 USD billion 30.6.20 31.12.19 30.6.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 0.8 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 0 143 101 0 143 101 points Traded loans, loans designated at fair value, loan commitments and guarantees 3.1 2.4 0.1 0.0 Relative value to market comparable Loan price equivalent 0 100 99 0 101 99 points Discounted expected cash flows Credit spread 250 1,000 225 530 basis points Market comparable and securitization model Discount margin 1 19 3 0 14 2 % Auction rate securities 1.4 1.5 Relative value to market comparable Bond price equivalent 79 91 80 79 98 88 points Investment fund units 3 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 3 0.6 0.7 0.1 0.1 Relative value to market comparable Price Debt issued designated at fair value 4 9.7 9.9 Other financial liabilities designated at fair value 1.1 0.8 Discounted expected cash flows Funding spread 44 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.3 0.3 0.8 0.1 Option model Volatility of interest rates 33 80 15 63 basis points Credit derivative contracts 0.4 0.4 0.9 0.5 Discounted expected cash flows Credit spreads (2) 558 1 700 basis points Bond price equivalent 0 113 0 100 points Equity / index contracts 0.8 0.6 1.4 1.3 Option model Equity dividend yields 0 14 0 14 % Volatility of equity stocks, equity and other indices 4 125 4 105 % Equity-to-FX correlation (45) 61 (45) 71 % Equity-to-equity correlation (17) 99 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts as this would not be meaningful. 3 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 4 Valuation techniques, significant unobservable inputs and the respective input ranges for Debt issued designated at fair value are the same as the equivalent derivative instruments presented elsewhere in this table.
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [text block]	Valuation techniques and inputs used in the fair value measurement of Level 3 assets and liabilities Fair value Significant unobservable input(s) 1 Range of inputs Assets Liabilities Valuation technique(s) 30.6.20 31.12.19 USD billion 30.6.20 31.12.19 30.6.20 31.12.19 low high weighted average 2 low high weighted average 2 unit 1 Financial assets and liabilities at fair value held for trading and Financial assets at fair value not held for trading Corporate and municipal bonds 0.8 0.5 0.0 0.0 Relative value to market comparable Bond price equivalent 0 143 101 0 143 101 points Traded loans, loans designated at fair value, loan commitments and guarantees 3.1 2.4 0.1 0.0 Relative value to market comparable Loan price equivalent 0 100 99 0 101 99 points Discounted expected cash flows Credit spread 250 1,000 225 530 basis points Market comparable and securitization model Discount margin 1 19 3 0 14 2 % Auction rate securities 1.4 1.5 Relative value to market comparable Bond price equivalent 79 91 80 79 98 88 points Investment fund units 3 0.1 0.1 0.0 0.0 Relative value to market comparable Net asset value Equity instruments 3 0.6 0.7 0.1 0.1 Relative value to market comparable Price Debt issued designated at fair value 4 9.7 9.9 Other financial liabilities designated at fair value 1.1 0.8 Discounted expected cash flows Funding spread 44 175 44 175 basis points Derivative financial instruments Interest rate contracts 0.3 0.3 0.8 0.1 Option model Volatility of interest rates 33 80 15 63 basis points Credit derivative contracts 0.4 0.4 0.9 0.5 Discounted expected cash flows Credit spreads (2) 558 1 700 basis points Bond price equivalent 0 113 0 100 points Equity / index contracts 0.8 0.6 1.4 1.3 Option model Equity dividend yields 0 14 0 14 % Volatility of equity stocks, equity and other indices 4 125 4 105 % Equity-to-FX correlation (45) 61 (45) 71 % Equity-to-equity correlation (17) 99 (17) 98 % 1 The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par). 2 Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts as this would not be meaningful. 3 The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments. 4 Valuation techniques, significant unobservable inputs and the respective input ranges for Debt issued designated at fair value are the same as the equivalent derivative instruments presented elsewhere in this table.
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, assets [text block]	Sensitivity of fair value measurements to changes in unobservable input assumptions 1 30.6.20 31.3.20 31.12.19 USD million Favorable changes Unfavorable changes Favorable changes Unfavorable changes Favorable changes Unfavorable changes Traded loans, loans designated at fair value, loan commitments and guarantees 71 (83) 165 (209) 46 (21) Securities financing transactions 26 (26) 35 (33) 11 (11) Auction rate securities 105 (105) 105 (105) 87 (87) Asset-backed securities 45 (45) 42 (51) 35 (40) Equity instruments 160 (92) 150 (82) 140 (80) Interest rate derivative contracts, net 12 (23) 16 (20) 8 (17) Credit derivative contracts, net 6 2 (11) 2 34 (38) 31 (35) Foreign exchange derivative contracts, net 14 (8) 15 (13) 12 (8) Equity / index derivative contracts, net 351 (352) 362 (429) 183 (197) Other 35 (35) 48 (50) 47 (51) Total 824 (780) 972 (1,028) 600 (547) 1 Sensitivity of issued and over-the-counter debt instruments is reported with the equivalent derivative or securities financing instrument. 2 Includes refinements applied in estimating valuation uncertainty, resulting from a move to use issuer specific proxy credit default swap curves rather than generic curves.
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs, liabilities [text block]	Sensitivity of fair value measurements to changes in unobservable input assumptions 1 30.6.20 31.3.20 31.12.19 USD million Favorable changes Unfavorable changes Favorable changes Unfavorable changes Favorable changes Unfavorable changes Traded loans, loans designated at fair value, loan commitments and guarantees 71 (83) 165 (209) 46 (21) Securities financing transactions 26 (26) 35 (33) 11 (11) Auction rate securities 105 (105) 105 (105) 87 (87) Asset-backed securities 45 (45) 42 (51) 35 (40) Equity instruments 160 (92) 150 (82) 140 (80) Interest rate derivative contracts, net 12 (23) 16 (20) 8 (17) Credit derivative contracts, net 6 2 (11) 2 34 (38) 31 (35) Foreign exchange derivative contracts, net 14 (8) 15 (13) 12 (8) Equity / index derivative contracts, net 351 (352) 362 (429) 183 (197) Other 35 (35) 48 (50) 47 (51) Total 824 (780) 972 (1,028) 600 (547) 1 Sensitivity of issued and over-the-counter debt instruments is reported with the equivalent derivative or securities financing instrument. 2 Includes refinements applied in estimating valuation uncertainty, resulting from a move to use issuer specific proxy credit default swap curves rather than generic curves.
Disclosure Of Fair Value Of Financial Instruments Explanatory	Movements of Level 3 instruments 1 Total gains / losses included in comprehensive income Total gains / losses included in comprehensive income USD billion Balance as of 31 December 2018 Net gains / losses included in income 2 of which: related to Level 3 instruments held at the end of the reporting period Purchases Sales Issuances Settlements Transfers into Level 3 Transfers out of Level 3 Foreign currency translation Balance as of 30 June 2019 Balance as of 31 December 2019 3 Net gains / losses included in income 2 of which: related to Level 3 instruments held at the end of the reporting period Purchases Sales Issuances Settlements Transfers into Level 3 Transfers out of Level 3 Foreign currency translation Balance as of 30 June 2020 3 Financial assets at fair value held for trading 2.0 (0.1) 0.0 0.3 (1.2) 0.8 0.0 0.2 (0.3) 0.0 1.6 1.8 (0.1) 0.0 0.3 (1.0) 1.4 0.0 0.3 0.0 0.0 2.7 of which: Investment fund units 0.4 0.0 0.0 0.0 (0.2) 0.0 0.0 0.1 (0.2) 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Corporate and municipal bonds 0.7 0.0 0.0 0.1 (0.2) 0.0 0.0 0.0 (0.1) 0.0 0.5 0.5 0.0 0.0 0.2 (0.2) 0.0 0.0 0.2 0.0 0.0 0.8 Loans 0.7 (0.1) 0.0 0.1 (0.7) 0.8 0.0 0.0 0.0 0.0 0.7 0.8 (0.1) 0.0 0.0 (0.6) 1.4 0.0 0.0 0.0 0.0 1.6 Other 0.2 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.3 0.4 0.0 0.0 0.0 (0.2) 0.0 0.0 0.1 0.0 0.0 0.3 Derivative financial instruments – assets 1.4 (0.2) (0.1) 0.0 0.0 0.3 (0.2) 0.2 (0.1) 0.0 1.5 1.3 0.3 0.4 0.0 0.0 0.5 (0.5) 0.0 (0.1) 0.0 1.5 of which: Interest rate contracts 0.4 (0.1) (0.1) 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.6 0.3 0.2 0.2 0.0 0.0 0.0 (0.2) 0.0 0.0 0.0 0.3 Equity / index contracts 0.5 (0.1) 0.0 0.0 0.0 0.1 0.0 0.1 (0.1) 0.0 0.4 0.6 0.0 0.1 0.0 0.0 0.5 (0.2) 0.0 (0.1) 0.0 0.8 Credit derivative contracts 0.5 0.0 0.0 0.0 0.0 0.1 (0.1) 0.0 0.0 0.0 0.5 0.4 0.1 0.1 0.0 0.0 0.0 (0.2) 0.0 0.0 0.0 0.4 Other 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Financial assets at fair value not held for trading 4.4 0.3 0.3 0.3 (0.4) 0.0 0.0 0.2 (0.9) 0.0 3.9 4.0 (0.1) (0.1) 0.5 (0.6) 0.0 0.0 0.1 0.0 0.0 3.7 of which: Loans 1.8 0.2 0.2 0.1 (0.1) 0.0 0.0 0.2 (0.9) 0.0 1.3 1.2 0.0 0.0 0.4 (0.5) 0.0 0.0 0.0 0.0 0.0 1.0 Auction rate securities 1.7 0.0 0.0 0.0 (0.1) 0.0 0.0 0.0 0.0 0.0 1.6 1.5 (0.1) (0.1) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.4 Equity instruments 0.5 0.1 0.1 0.0 (0.2) 0.0 0.0 0.0 0.0 0.0 0.5 0.5 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.5 Other 0.5 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.7 0.0 0.0 0.1 (0.1) 0.0 0.0 0.0 0.0 0.0 0.8 Derivative financial instruments – liabilities 2.2 0.0 (0.1) 0.0 0.0 0.2 (0.4) 0.1 (0.2) 0.0 1.9 2.0 1.2 1.1 0.0 0.0 0.5 (0.8) 0.6 (0.3) 0.0 3.3 of which: Interest rate contracts 0.2 (0.1) (0.1) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.1 0.7 0.7 0.0 0.0 0.0 (0.3) 0.3 0.0 0.0 0.8 Equity / index contracts 1.4 0.0 (0.1) 0.0 0.0 0.1 (0.3) 0.0 (0.2) 0.0 1.0 1.3 0.2 0.2 0.0 0.0 0.5 (0.4) 0.0 (0.2) 0.0 1.4 Credit derivative contracts 0.5 0.0 0.0 0.0 0.0 0.1 (0.1) 0.1 0.0 0.0 0.6 0.5 0.3 0.3 0.0 0.0 0.1 (0.1) 0.3 (0.1) 0.0 0.9 Other 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 Debt issued designated at fair value 11.0 0.4 0.4 0.0 0.0 3.9 (2.2) 0.3 (2.1) 0.0 11.4 9.9 0.2 0.3 0.0 0.0 3.9 (3.5) 0.4 (1.0) 0.0 9.7 Other financial liabilities designated at fair value 1.0 0.1 0.1 0.0 0.0 0.2 (0.7) 0.0 0.0 0.0 0.7 0.8 0.0 0.0 0.0 0.0 0.6 (0.3) 0.0 0.0 0.0 1.1 1 Effective 2020, UBS has enhanced its disclosure of Level 3 movements by excluding from the table the impacts of instruments purchased during the period and sold prior to the end of the period. Prior-period comparatives have been restated accordingly. 2 Net gains / losses included in comprehensive income are comprised of Net interest income, Other net income from financial instruments measured at fair value through profit or loss and Other income. 3 Total Level 3 assets as of 30 June 2020 were USD 8.1 billion (31 December 2019: USD 7.2 billion). Total Level 3 liabilities as of 30 June 2020 were USD 14.3 billion (31 December 2019: USD 12.8 billion).

Derivative instruments (Tables)

Derivative instruments (Tables)	3 Months Ended
	Jun. 30, 2020
Derivative financial instruments
Derivative [Line Items]
Disclosure Of Financial Assets Explanatory	As of 30.6.20, USD billion Derivative financial assets Notional values related to derivative financial assets 3 Derivative financial liabilities Notional values related to derivative financial liabilities 3 Other notional values 4 Derivative financial instruments 1,2 Interest rate contracts 55.5 910 49.9 887 11,797 Credit derivative contracts 1.9 66 2.7 68 0 Foreign exchange contracts 53.8 2,971 54.9 2,818 2 Equity / index contracts 37.0 376 41.1 474 105 Commodity contracts 3.3 66 3.1 58 11 Unsettled purchases of non-derivative financial instruments 5 0.3 32 0.2 12 Unsettled sales of non-derivative financial instruments 5 0.2 31 0.4 18 Total derivative financial instruments, based on IFRS netting 6 152.0 4,451 152.3 4,334 11,914 Further netting potential not recognized on the balance sheet 7 (138.1) (134.3) of which: netting of recognized financial liabilities / assets (112.3) (112.3) of which: netting with collateral received / pledged (25.8) (21.9) Total derivative financial instruments, after consideration of further netting potential 13.9 18.0 As of 31.3.20, USD billion Derivative financial instruments 1,2 Interest rate contracts 55.8 971 50.7 924 12,095 Credit derivative contracts 2.2 81 2.9 68 0 Foreign exchange contracts 94.7 3,413 93.2 3,221 2 Equity / index contracts 55.3 422 55.5 487 111 Commodity contracts 3.9 73 3.4 70 11 Unsettled purchases of non-derivative financial instruments 5 0.4 38 0.4 16 Unsettled sales of non-derivative financial instruments 5 0.5 39 0.5 22 Total derivative financial instruments, based on IFRS netting 6 213.0 5,037 206.6 4,807 12,219 Further netting potential not recognized on the balance sheet 7 (193.2) (186.6) of which: netting of recognized financial liabilities / assets (160.7) (160.7) of which: netting with collateral received / pledged (32.5) (25.9) Total derivative financial instruments, after consideration of further netting potential 19.8 20.1 As of 31.12.19, USD billion Derivative financial instruments 1,2 Interest rate contracts 42.6 1,007 36.6 961 11,999 Credit derivative contracts 2.0 70 3.0 70 0 Foreign exchange contracts 52.5 3,173 54.0 2,994 1 Equity / index contracts 22.8 420 25.5 534 122 Commodity contracts 1.8 56 1.7 60 13 Unsettled purchases of non-derivative financial instruments 5 0.1 17 0.1 7 Unsettled sales of non-derivative financial instruments 5 0.1 15 0.1 10 Total derivative financial instruments, based on IFRS netting 6 121.8 4,759 120.9 4,635 12,135 Further netting potential not recognized on the balance sheet 7 (110.7) (106.1) of which: netting of recognized financial liabilities / assets (89.3) (89.3) of which: netting with collateral received / pledged (21.4) (16.8) Total derivative financial instruments, after consideration of further netting potential 11.1 14.8 1 Derivative financial liabilities as of 30 June 2020 include USD 35 million related to derivative loan commitments (31 March 2020: USD 43 million; 31 December 2019: USD 17 million). No notional amounts related to these commitments are included in this table, but they are disclosed in Note 17, under Loan commitments. 2 Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The fair value of these derivative instruments was not material for any periods presented. No notional amounts related to these instruments are included in this table, but they are disclosed in Note 17, under Forward starting transactions. 3 In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional values of the netted derivative financial instruments are still presented on a gross basis. 4 Other notional values relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for any periods presented. 5 Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments. 6 Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. 7 Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.
Disclosure Of Financial Liabilities Explanatory	As of 30.6.20, USD billion Derivative financial assets Notional values related to derivative financial assets 3 Derivative financial liabilities Notional values related to derivative financial liabilities 3 Other notional values 4 Derivative financial instruments 1,2 Interest rate contracts 55.5 910 49.9 887 11,797 Credit derivative contracts 1.9 66 2.7 68 0 Foreign exchange contracts 53.8 2,971 54.9 2,818 2 Equity / index contracts 37.0 376 41.1 474 105 Commodity contracts 3.3 66 3.1 58 11 Unsettled purchases of non-derivative financial instruments 5 0.3 32 0.2 12 Unsettled sales of non-derivative financial instruments 5 0.2 31 0.4 18 Total derivative financial instruments, based on IFRS netting 6 152.0 4,451 152.3 4,334 11,914 Further netting potential not recognized on the balance sheet 7 (138.1) (134.3) of which: netting of recognized financial liabilities / assets (112.3) (112.3) of which: netting with collateral received / pledged (25.8) (21.9) Total derivative financial instruments, after consideration of further netting potential 13.9 18.0 As of 31.3.20, USD billion Derivative financial instruments 1,2 Interest rate contracts 55.8 971 50.7 924 12,095 Credit derivative contracts 2.2 81 2.9 68 0 Foreign exchange contracts 94.7 3,413 93.2 3,221 2 Equity / index contracts 55.3 422 55.5 487 111 Commodity contracts 3.9 73 3.4 70 11 Unsettled purchases of non-derivative financial instruments 5 0.4 38 0.4 16 Unsettled sales of non-derivative financial instruments 5 0.5 39 0.5 22 Total derivative financial instruments, based on IFRS netting 6 213.0 5,037 206.6 4,807 12,219 Further netting potential not recognized on the balance sheet 7 (193.2) (186.6) of which: netting of recognized financial liabilities / assets (160.7) (160.7) of which: netting with collateral received / pledged (32.5) (25.9) Total derivative financial instruments, after consideration of further netting potential 19.8 20.1 As of 31.12.19, USD billion Derivative financial instruments 1,2 Interest rate contracts 42.6 1,007 36.6 961 11,999 Credit derivative contracts 2.0 70 3.0 70 0 Foreign exchange contracts 52.5 3,173 54.0 2,994 1 Equity / index contracts 22.8 420 25.5 534 122 Commodity contracts 1.8 56 1.7 60 13 Unsettled purchases of non-derivative financial instruments 5 0.1 17 0.1 7 Unsettled sales of non-derivative financial instruments 5 0.1 15 0.1 10 Total derivative financial instruments, based on IFRS netting 6 121.8 4,759 120.9 4,635 12,135 Further netting potential not recognized on the balance sheet 7 (110.7) (106.1) of which: netting of recognized financial liabilities / assets (89.3) (89.3) of which: netting with collateral received / pledged (21.4) (16.8) Total derivative financial instruments, after consideration of further netting potential 11.1 14.8 1 Derivative financial liabilities as of 30 June 2020 include USD 35 million related to derivative loan commitments (31 March 2020: USD 43 million; 31 December 2019: USD 17 million). No notional amounts related to these commitments are included in this table, but they are disclosed in Note 17, under Loan commitments. 2 Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The fair value of these derivative instruments was not material for any periods presented. No notional amounts related to these instruments are included in this table, but they are disclosed in Note 17, under Forward starting transactions. 3 In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional values of the netted derivative financial instruments are still presented on a gross basis. 4 Other notional values relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for any periods presented. 5 Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments. 6 Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. 7 Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.
Disclosure Of Offsetting Of Financial Assets Explanatory	As of 30.6.20, USD billion Derivative financial assets Notional values related to derivative financial assets 3 Derivative financial liabilities Notional values related to derivative financial liabilities 3 Other notional values 4 Derivative financial instruments 1,2 Interest rate contracts 55.5 910 49.9 887 11,797 Credit derivative contracts 1.9 66 2.7 68 0 Foreign exchange contracts 53.8 2,971 54.9 2,818 2 Equity / index contracts 37.0 376 41.1 474 105 Commodity contracts 3.3 66 3.1 58 11 Unsettled purchases of non-derivative financial instruments 5 0.3 32 0.2 12 Unsettled sales of non-derivative financial instruments 5 0.2 31 0.4 18 Total derivative financial instruments, based on IFRS netting 6 152.0 4,451 152.3 4,334 11,914 Further netting potential not recognized on the balance sheet 7 (138.1) (134.3) of which: netting of recognized financial liabilities / assets (112.3) (112.3) of which: netting with collateral received / pledged (25.8) (21.9) Total derivative financial instruments, after consideration of further netting potential 13.9 18.0 As of 31.3.20, USD billion Derivative financial instruments 1,2 Interest rate contracts 55.8 971 50.7 924 12,095 Credit derivative contracts 2.2 81 2.9 68 0 Foreign exchange contracts 94.7 3,413 93.2 3,221 2 Equity / index contracts 55.3 422 55.5 487 111 Commodity contracts 3.9 73 3.4 70 11 Unsettled purchases of non-derivative financial instruments 5 0.4 38 0.4 16 Unsettled sales of non-derivative financial instruments 5 0.5 39 0.5 22 Total derivative financial instruments, based on IFRS netting 6 213.0 5,037 206.6 4,807 12,219 Further netting potential not recognized on the balance sheet 7 (193.2) (186.6) of which: netting of recognized financial liabilities / assets (160.7) (160.7) of which: netting with collateral received / pledged (32.5) (25.9) Total derivative financial instruments, after consideration of further netting potential 19.8 20.1 As of 31.12.19, USD billion Derivative financial instruments 1,2 Interest rate contracts 42.6 1,007 36.6 961 11,999 Credit derivative contracts 2.0 70 3.0 70 0 Foreign exchange contracts 52.5 3,173 54.0 2,994 1 Equity / index contracts 22.8 420 25.5 534 122 Commodity contracts 1.8 56 1.7 60 13 Unsettled purchases of non-derivative financial instruments 5 0.1 17 0.1 7 Unsettled sales of non-derivative financial instruments 5 0.1 15 0.1 10 Total derivative financial instruments, based on IFRS netting 6 121.8 4,759 120.9 4,635 12,135 Further netting potential not recognized on the balance sheet 7 (110.7) (106.1) of which: netting of recognized financial liabilities / assets (89.3) (89.3) of which: netting with collateral received / pledged (21.4) (16.8) Total derivative financial instruments, after consideration of further netting potential 11.1 14.8 1 Derivative financial liabilities as of 30 June 2020 include USD 35 million related to derivative loan commitments (31 March 2020: USD 43 million; 31 December 2019: USD 17 million). No notional amounts related to these commitments are included in this table, but they are disclosed in Note 17, under Loan commitments. 2 Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The fair value of these derivative instruments was not material for any periods presented. No notional amounts related to these instruments are included in this table, but they are disclosed in Note 17, under Forward starting transactions. 3 In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional values of the netted derivative financial instruments are still presented on a gross basis. 4 Other notional values relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for any periods presented. 5 Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments. 6 Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. 7 Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.
Disclosure Of Offsetting Of Financial Liabilities Explanatory	As of 30.6.20, USD billion Derivative financial assets Notional values related to derivative financial assets 3 Derivative financial liabilities Notional values related to derivative financial liabilities 3 Other notional values 4 Derivative financial instruments 1,2 Interest rate contracts 55.5 910 49.9 887 11,797 Credit derivative contracts 1.9 66 2.7 68 0 Foreign exchange contracts 53.8 2,971 54.9 2,818 2 Equity / index contracts 37.0 376 41.1 474 105 Commodity contracts 3.3 66 3.1 58 11 Unsettled purchases of non-derivative financial instruments 5 0.3 32 0.2 12 Unsettled sales of non-derivative financial instruments 5 0.2 31 0.4 18 Total derivative financial instruments, based on IFRS netting 6 152.0 4,451 152.3 4,334 11,914 Further netting potential not recognized on the balance sheet 7 (138.1) (134.3) of which: netting of recognized financial liabilities / assets (112.3) (112.3) of which: netting with collateral received / pledged (25.8) (21.9) Total derivative financial instruments, after consideration of further netting potential 13.9 18.0 As of 31.3.20, USD billion Derivative financial instruments 1,2 Interest rate contracts 55.8 971 50.7 924 12,095 Credit derivative contracts 2.2 81 2.9 68 0 Foreign exchange contracts 94.7 3,413 93.2 3,221 2 Equity / index contracts 55.3 422 55.5 487 111 Commodity contracts 3.9 73 3.4 70 11 Unsettled purchases of non-derivative financial instruments 5 0.4 38 0.4 16 Unsettled sales of non-derivative financial instruments 5 0.5 39 0.5 22 Total derivative financial instruments, based on IFRS netting 6 213.0 5,037 206.6 4,807 12,219 Further netting potential not recognized on the balance sheet 7 (193.2) (186.6) of which: netting of recognized financial liabilities / assets (160.7) (160.7) of which: netting with collateral received / pledged (32.5) (25.9) Total derivative financial instruments, after consideration of further netting potential 19.8 20.1 As of 31.12.19, USD billion Derivative financial instruments 1,2 Interest rate contracts 42.6 1,007 36.6 961 11,999 Credit derivative contracts 2.0 70 3.0 70 0 Foreign exchange contracts 52.5 3,173 54.0 2,994 1 Equity / index contracts 22.8 420 25.5 534 122 Commodity contracts 1.8 56 1.7 60 13 Unsettled purchases of non-derivative financial instruments 5 0.1 17 0.1 7 Unsettled sales of non-derivative financial instruments 5 0.1 15 0.1 10 Total derivative financial instruments, based on IFRS netting 6 121.8 4,759 120.9 4,635 12,135 Further netting potential not recognized on the balance sheet 7 (110.7) (106.1) of which: netting of recognized financial liabilities / assets (89.3) (89.3) of which: netting with collateral received / pledged (21.4) (16.8) Total derivative financial instruments, after consideration of further netting potential 11.1 14.8 1 Derivative financial liabilities as of 30 June 2020 include USD 35 million related to derivative loan commitments (31 March 2020: USD 43 million; 31 December 2019: USD 17 million). No notional amounts related to these commitments are included in this table, but they are disclosed in Note 17, under Loan commitments. 2 Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The fair value of these derivative instruments was not material for any periods presented. No notional amounts related to these instruments are included in this table, but they are disclosed in Note 17, under Forward starting transactions. 3 In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional values of the netted derivative financial instruments are still presented on a gross basis. 4 Other notional values relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for any periods presented. 5 Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments. 6 Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of the entity and all of the counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. 7 Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.
Cash collateral receivables on derivative instruments
Derivative [Line Items]
Disclosure Of Offsetting Of Financial Assets Explanatory	USD billion Receivables 30.6.20 Payables 30.6.20 Receivables 31.3.20 Payables 31.3.20 Receivables 31.12.19 Payables 31.12.19 Cash collateral on derivative instruments, based on IFRS netting 1 30.8 36.9 39.5 45.6 23.3 31.4 Further netting potential not recognized on the balance sheet 2 (18.0) (20.1) (21.7) (24.2) (14.4) (18.1) of which: netting of recognized financial liabilities / assets (16.7) (18.3) (19.6) (21.8) (13.3) (16.5) of which: netting with collateral received / pledged (1.3) (1.8) (2.1) (2.4) (1.1) (1.7) Cash collateral on derivative instruments, after consideration of further netting potential 12.8 16.8 17.9 21.5 8.9 13.3 1 Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS or its counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. 2 Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.
Disclosure Of Offsetting Of Financial Liabilities Explanatory	USD billion Receivables 30.6.20 Payables 30.6.20 Receivables 31.3.20 Payables 31.3.20 Receivables 31.12.19 Payables 31.12.19 Cash collateral on derivative instruments, based on IFRS netting 1 30.8 36.9 39.5 45.6 23.3 31.4 Further netting potential not recognized on the balance sheet 2 (18.0) (20.1) (21.7) (24.2) (14.4) (18.1) of which: netting of recognized financial liabilities / assets (16.7) (18.3) (19.6) (21.8) (13.3) (16.5) of which: netting with collateral received / pledged (1.3) (1.8) (2.1) (2.4) (1.1) (1.7) Cash collateral on derivative instruments, after consideration of further netting potential 12.8 16.8 17.9 21.5 8.9 13.3 1 Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS or its counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. 2 Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.
Cash collateral payables on derivative instruments
Derivative [Line Items]
Disclosure Of Offsetting Of Financial Assets Explanatory	USD billion Receivables 30.6.20 Payables 30.6.20 Receivables 31.3.20 Payables 31.3.20 Receivables 31.12.19 Payables 31.12.19 Cash collateral on derivative instruments, based on IFRS netting 1 30.8 36.9 39.5 45.6 23.3 31.4 Further netting potential not recognized on the balance sheet 2 (18.0) (20.1) (21.7) (24.2) (14.4) (18.1) of which: netting of recognized financial liabilities / assets (16.7) (18.3) (19.6) (21.8) (13.3) (16.5) of which: netting with collateral received / pledged (1.3) (1.8) (2.1) (2.4) (1.1) (1.7) Cash collateral on derivative instruments, after consideration of further netting potential 12.8 16.8 17.9 21.5 8.9 13.3 1 Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS or its counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. 2 Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.
Disclosure Of Offsetting Of Financial Liabilities Explanatory	USD billion Receivables 30.6.20 Payables 30.6.20 Receivables 31.3.20 Payables 31.3.20 Receivables 31.12.19 Payables 31.12.19 Cash collateral on derivative instruments, based on IFRS netting 1 30.8 36.9 39.5 45.6 23.3 31.4 Further netting potential not recognized on the balance sheet 2 (18.0) (20.1) (21.7) (24.2) (14.4) (18.1) of which: netting of recognized financial liabilities / assets (16.7) (18.3) (19.6) (21.8) (13.3) (16.5) of which: netting with collateral received / pledged (1.3) (1.8) (2.1) (2.4) (1.1) (1.7) Cash collateral on derivative instruments, after consideration of further netting potential 12.8 16.8 17.9 21.5 8.9 13.3 1 Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS or its counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. 2 Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.

Other assets and liabilities (T

Other assets and liabilities (Tables)	3 Months Ended
	Jun. 30, 2020
Other financial assets measured at amortized cost
Other Assets And Other Liabilities [Line Items]
Disclosure Of Other Assets Explanatory	USD million 30.6.20 31.3.20 31.12.19 Debt securities 19,062 14,118 14,141 of which: government bills / bonds 9,812 8,458 8,492 Loans to financial advisors 1 2,673 2,699 2,877 Fee- and commission-related receivables 1,650 2,094 1,521 Finance lease receivables 1,409 1,386 1,444 Settlement and clearing accounts 317 893 587 Accrued interest income 624 624 742 Other 1,518 1,951 1,669 Total other financial assets measured at amortized cost 27,253 23,765 22,980 1 Related to financial advisors in the US and Canada.
Other non-financial assets
Other Assets And Other Liabilities [Line Items]
Disclosure Of Other Assets Explanatory	USD million 30.6.20 31.3.20 31.12.19 Precious metals and other physical commodities 4,890 4,050 4,597 Bail deposit 1 1,300 1,273 1,293 Prepaid expenses 980 1,069 927 VAT and other tax receivables 374 384 493 Properties and other non-current assets held for sale 242 202 199 Other 390 657 346 Total other non-financial assets 8,177 7,634 7,856 1 Refer to item 1 in Note 16b for more information.
Other financial liabilities measured at amortized cost
Other Assets And Other Liabilities [Line Items]
Disclosure Of Other Liabilities Explanatory	USD million 30.6.20 31.3.20 31.12.19 Other accrued expenses 1,607 1,835 1,928 Accrued interest expenses 1,155 1,065 1,562 Settlement and clearing accounts 1,818 1,844 1,379 Lease liabilities 3,850 3,830 3,943 Other 1,268 1,360 900 Total other financial liabilities measured at amortized cost 9,699 9,934 9,712
Other financial liabilities designated at fair value
Other Assets And Other Liabilities [Line Items]
Disclosure Of Other Liabilities Explanatory	USD million 30.6.20 31.3.20 31.12.19 Financial liabilities related to unit-linked investment contracts 26,573 23,150 28,145 Securities financing transactions 8,371 5,992 5,742 Over-the-counter debt instruments 2,852 2,297 2,022 Other 105 96 31 Total other financial liabilities designated at fair value 37,902 31,536 35,940 of which: life-to-date own credit (gain) / loss (64) (217) (4)
Other non-financial liabilities
Other Assets And Other Liabilities [Line Items]
Disclosure Of Other Liabilities Explanatory	USD million 30.6.20 31.3.20 31.12.19 Compensation-related liabilities 5,799 4,514 6,812 of which: Deferred Contingent Capital Plan 1,561 1,464 1,855 of which: financial advisor compensation plans 1,267 1,189 1,463 of which: other compensation plans 1,575 648 2,310 of which: net defined benefit pension and post-employment liabilities 771 629 633 of which: other compensation-related liabilities 1 624 585 552 Deferred tax liabilities 675 800 311 Current tax liabilities 875 705 852 VAT and other tax payables 518 575 475 Deferred income 249 219 141 Other 186 245 202 Total other non-financial liabilities 8,302 7,059 8,794 1 Includes liabilities for payroll taxes and untaken vacation.

Debt issued designated at fai_2

Debt issued designated at fair value (Table)	3 Months Ended
	Jun. 30, 2020
Debt issued designated at fair value
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Designated Financial Liabilities At Fair Value Through Profit Or Loss	USD million 30.6.20 31.3.20 31.12.19 Issued debt instruments Equity-linked 1 35,657 32,927 41,722 Rates-linked 13,694 12,898 16,318 Credit-linked 1,866 1,682 1,916 Fixed-rate 4,436 3,797 4,636 Commodity-linked 1,335 1,249 1,567 Other 1,876 746 649 of which: debt that contributes to total loss-absorbing capacity 1,220 259 217 Total debt issued designated at fair value 58,864 53,299 66,809 of which: issued by UBS AG with original maturity greater than one year 2 41,403 37,364 51,031 of which: life-to-date own credit (gain) / loss 95 (852) 92 1 Includes investment fund unit-linked instruments issued. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. 100% of the balance as of 30 June 2020 was unsecured (31 March 2020: 100% of the balance was unsecured; 31 December 2019: more than 99% of the balance was unsecured).

Debt issued measured at amort_2

Debt issued measured at amortized cost (Tables)	3 Months Ended
	Jun. 30, 2020
Notes And Debentures Issued [Member]
Disclosure Of Financial Liabilities [Line Items]
Disclosure Of Detailed Information About Borrowings Explanatory	USD million 30.6.20 31.3.20 31.12.19 Certificates of deposit 16,401 9,246 5,190 Commercial paper 16,156 15,453 14,413 Other short-term debt 3,877 2,468 2,235 Short-term debt 1 36,434 27,167 21,837 Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC) 31,258 33,895 30,105 Senior unsecured debt other than TLAC 26,519 22,282 25,569 of which: issued by UBS AG with original maturity greater than one year 2 21,729 20,576 22,349 Covered bonds 2,605 2,570 2,633 Subordinated debt 21,130 20,917 21,775 of which: high-trigger loss-absorbing additional tier 1 capital instruments 11,041 10,902 11,931 of which: low-trigger loss-absorbing additional tier 1 capital instruments 2,491 2,464 2,414 of which: low-trigger loss-absorbing tier 2 capital instruments 7,063 7,017 6,892 of which: non-Basel III-compliant tier 2 capital instruments 534 534 540 Debt issued through the Swiss central mortgage institutions 8,795 8,597 8,574 Other long-term debt 3 3 4 Long-term debt 3 90,310 88,265 88,660 Total debt issued measured at amortized cost 4 126,744 115,432 110,497 1 Debt with an original contractual maturity of less than one year. 2 Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. As of 30 June 2020, 100% of the balance was unsecured (31 March 2020: 100% of the balance was unsecured; 31 December 2019: 100% of the balance was unsecured). 3 Debt with an original contractual maturity greater than or equal to one year. The classification of debt issued into short-term and long-term does not consider any early redemption features. 4 Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.

Provisions and contingent liabi

Provisions and contingent liabilities (Tables)	3 Months Ended
	Jun. 30, 2020
Disclosure Of Other Provisions [Line Items]
Disclosure Of Provisions Breakdown Explanatory	USD million 30.6.20 31.3.20 31.12.19 Provisions other than provisions for expected credit losses 2,361 2,404 2,861 Provisions for expected credit losses 240 162 114 Total provisions 2,601 2,566 2,974
Disclosure Of Other Provisions Explanatory	USD million Litigation, regulatory and similar matters 1 Restructuring Other 3 Total Balance as of 31 December 2019 2,475 106 280 2,861 Balance as of 31 March 2020 1,998 142 264 2,404 Increase in provisions recognized in the income statement 20 20 8 49 Release of provisions recognized in the income statement (18) (8) (1) (28) Provisions used in conformity with designated purpose (33) (45) (7) (85) Foreign currency translation / unwind of discount 14 1 5 20 Balance as of 30 June 2020 1,980 111 2 269 2,361 1 Comprises provisions for losses resulting from legal, liability and compliance risks. 2 Primarily consists of personnel-related restructuring provisions of USD 51 million as of 30 June 2020 (31 March 2020: USD 78 million; 31 December 2019: USD 40 million) and provisions for onerous contracts of USD 55 million as of 30 June 2020 (31 March 2020: USD 59 million; 31 December 2019: USD 61 million). 3 Mainly includes provisions related to real estate, employee benefits and operational risks.

Litigation, regulatory and si_2

Litigation, regulatory and similar matters (Tables)	3 Months Ended
	Jun. 30, 2020
Notes Litigation Regulatory And Similar Matters [Line Items]
Disclosure of provisions for litigation, regulatory and similar matters [text block]	Provisions for litigation, regulatory and similar matters by business division and in Group Functions 1 USD million Global Wealth Manage- ment Personal & Corporate Banking Asset Manage- ment Investment Bank Group Functions UBS Balance as of 31 December 2019 782 113 0 255 1,325 2,475 Balance as of 31 March 2020 747 112 0 205 934 1,998 Increase in provisions recognized in the income statement 20 0 0 1 0 20 Release of provisions recognized in the income statement (12) (6) 0 0 0 (18) Provisions used in conformity with designated purpose (33) 0 0 (1) 0 (33) Foreign currency translation / unwind of discount 9 2 0 2 0 14 Balance as of 30 June 2020 732 108 0 207 934 1,980 1 Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions.

Guarantees, commitments and f_2

Guarantees, commitments and forward starting transactions (Tables)	3 Months Ended
	Jun. 30, 2020
Maximum Exposure To Credit Risk [Line Items]
Disclosure Of Credit Risk Exposure Explanatory	USD million 30.6.20 Carrying amount 1,2 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 149,549 149,549 0 0 0 0 0 0 Loans and advances to banks 15,633 15,534 99 0 (6) (4) (1) (1) Receivables from securities financing transactions 85,271 85,271 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 30,846 30,846 0 0 (1) (1) 0 0 Loans and advances to customers 344,652 318,977 23,673 2,002 (1,089) (134) (236) (719) of which: Private clients with mortgages 137,563 128,527 8,076 960 (157) (25) (93) (39) of which: Real estate financing 40,653 34,083 6,559 11 (55) (10) (42) (4) of which: Large corporate clients 14,376 11,148 2,962 266 (308) (34) (58) (217) of which: SME clients 13,518 7,845 5,177 496 (319) (21) (29) (269) of which: Lombard 116,482 116,292 0 191 (71) (11) 0 (60) of which: Credit cards 1,396 1,065 304 26 (35) (9) (11) (15) of which: Commodity trade finance 3,194 3,155 30 9 (83) (5) 0 (78) Other financial assets measured at amortized cost 27,253 26,107 404 741 (151) (40) (10) (100) of which: Loans to financial advisors 2,673 2,090 201 382 (116) (34) (7) (74) Total financial assets measured at amortized cost 653,205 626,286 24,176 2,743 (1,249) (181) (247) (821) Financial assets measured at fair value through other comprehensive income 8,624 8,624 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 661,829 634,910 24,176 2,743 (1,249) (181) (247) (821) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 16,313 14,768 1,369 176 (47) (11) (4) (32) of which: Large corporate clients 3,494 2,640 733 121 (8) (3) (3) (3) of which: SME clients 1,293 725 514 54 (25) (1) (1) (24) of which: Financial intermediaries and hedge funds 6,964 6,910 54 0 (6) (6) 0 0 of which: Lombard 602 602 0 0 (1) 0 0 (1) of which: Commodity trade finance 1,601 1,583 18 0 (1) (1) 0 0 Irrevocable loan commitments 39,651 34,494 5,044 114 (121) (57) (64) 0 of which: Large corporate clients 23,167 18,284 4,838 45 (109) (50) (59) 0 Forward starting reverse repurchase and securities borrowing agreements 2,210 2,210 0 0 0 0 0 0 Committed unconditionally revocable credit lines 37,822 32,892 4,870 60 (65) (34) (32) 0 of which: Real estate financing 5,666 5,019 647 0 (25) (4) (21) 0 of which: Large corporate clients 4,356 3,482 856 18 (9) (4) (5) 0 of which: SME clients 4,980 2,962 1,984 34 (17) (14) (4) 0 of which: Lombard 9,410 9,410 0 0 (1) (1) 0 0 of which: Credit cards 8,159 7,726 425 8 (10) (7) (2) 0 Irrevocable committed prolongation of existing loans 4,265 4,240 25 1 (7) (7) 0 0 Total off-balance sheet financial instruments and other credit lines 100,262 88,604 11,307 351 (240) (108) (100) (32) Total allowances and provisions (1,489) (289) (346) (853) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. 2 The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs. USD million 31.3.20 Carrying amount 1 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 139,258 139,258 0 0 0 0 0 0 Loans and advances to banks 16,972 16,894 78 0 (6) (4) (1) (1) Receivables from securities financing transactions 89,648 88,394 449 804 (34) (2) (15) (16) Cash collateral receivables on derivative instruments 39,545 39,545 0 0 0 0 0 0 Loans and advances to customers 337,551 320,740 14,896 1,914 (936) (101) (164) (671) of which: Private clients with mortgages 134,759 126,633 7,168 957 (111) (17) (55) (39) of which: Real estate financing 39,097 33,876 5,205 16 (49) (6) (39) (4) of which: Large corporate clients 15,343 14,328 849 166 (191) (21) (35) (134) of which: SME clients 11,943 10,453 1,036 455 (358) (18) (20) (320) of which: Lombard 114,401 114,144 0 258 (56) (10) 0 (46) of which: Credit cards 1,317 985 308 23 (34) (7) (14) (14) of which: Commodity trade finance 2,801 2,778 13 10 (82) (5) 0 (77) Other financial assets measured at amortized cost 23,765 22,820 410 536 (143) (31) (15) (97) of which: Loans to financial advisors 2,699 2,198 303 198 (112) (25) (13) (73) Total financial assets measured at amortized cost 646,739 627,651 15,833 3,255 (1,120) (139) (195) (786) Financial assets measured at fair value through other comprehensive income 7,653 7,653 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 654,392 635,305 15,833 3,255 (1,120) (139) (195) (786) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,830 17,387 361 83 (76) (8) (1) (66) of which: Large corporate clients 3,742 3,471 244 26 (33) (1) 0 (32) of which: SME clients 1,308 1,185 67 56 (28) 0 0 (27) of which: Financial intermediaries and hedge funds 7,965 7,949 16 0 (5) (5) 0 0 of which: Lombard 603 603 0 0 (7) 0 0 (7) of which: Commodity trade finance 1,967 1,951 16 0 (1) (1) 0 0 Irrevocable loan commitments 28,334 27,701 550 84 (46) (34) (13) 0 of which: Large corporate clients 18,224 17,712 453 59 (33) (26) (7) 0 Forward starting reverse repurchase and securities borrowing agreements 5,123 5,123 0 0 0 0 0 0 Committed unconditionally revocable credit lines 34,487 33,509 942 35 (36) (20) (16) 0 of which: Real estate financing 4,989 4,679 310 0 (16) (3) (12) 0 of which: Large corporate clients 3,784 3,697 70 17 (2) (1) 0 0 of which: SME clients 4,644 4,492 133 18 (10) (9) (1) 0 of which: Lombard 7,649 7,649 0 0 0 (1) 0 0 of which: Credit cards 8,295 7,923 371 0 (5) (4) (2) 0 Irrevocable committed prolongation of existing loans 4,040 4,038 0 2 (4) (4) 0 0 Total off-balance sheet financial instruments and other credit lines 89,814 87,757 1,852 204 (162) (66) (29) (66) Total allowances and provisions (1,282) (205) (225) (852) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. USD million 31.12.19 Carrying amount 1 ECL allowance Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Cash and balances at central banks 107,068 107,068 0 0 0 0 0 0 Loans and advances to banks 12,447 12,367 80 0 (6) (4) (1) (1) Receivables from securities financing transactions 84,245 84,245 0 0 (2) (2) 0 0 Cash collateral receivables on derivative instruments 23,289 23,289 0 0 0 0 0 0 Loans and advances to customers 326,786 309,499 15,538 1,749 (764) (82) (123) (559) of which: Private clients with mortgages 132,646 124,063 7,624 959 (110) (15) (55) (41) of which: Real estate financing 38,481 32,932 5,532 17 (43) (5) (34) (4) of which: Large corporate clients 9,703 9,184 424 94 (117) (15) (4) (98) of which: SME clients 11,786 9,817 1,449 521 (303) (17) (15) (271) of which: Lombard 112,893 112,796 0 98 (22) (4) 0 (18) of which: Credit cards 1,661 1,314 325 22 (35) (8) (14) (13) of which: Commodity trade finance 2,844 2,826 8 10 (81) (5) 0 (77) Other financial assets measured at amortized cost 22,980 21,953 451 576 (143) (35) (13) (95) of which: Loans to financial advisors 2,877 2,341 334 202 (109) (29) (11) (70) Total financial assets measured at amortized cost 576,815 558,420 16,069 2,326 (915) (124) (137) (655) Financial assets measured at fair value through other comprehensive income 6,345 6,345 0 0 0 0 0 0 Total on-balance sheet financial assets in scope of ECL requirements 583,159 564,765 16,069 2,326 (915) (124) (137) (655) Total exposure ECL provision Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 (42) (8) (1) (33) of which: Large corporate clients 3,687 3,461 203 24 (10) (1) 0 (9) of which: SME clients 1,180 1,055 67 58 (24) 0 0 (23) of which: Financial intermediaries and hedge funds 7,966 7,950 16 0 (5) (4) 0 0 of which: Lombard 622 622 0 0 (1) 0 0 (1) of which: Commodity trade finance 2,334 2,320 13 0 (1) (1) 0 0 Irrevocable loan commitments 27,547 27,078 419 50 (35) (30) (5) 0 of which: Large corporate clients 18,735 18,349 359 27 (27) (24) (3) 0 Forward starting reverse repurchase and securities borrowing agreements 1,657 1,657 0 0 0 0 0 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 (34) (17) (17) 0 of which: Real estate financing 5,242 4,934 307 0 (16) (3) (13) 0 of which: Large corporate clients 4,274 4,188 69 17 (1) (1) 0 0 of which: SME clients 4,787 4,589 171 27 (9) (8) (1) 0 of which: Lombard 7,976 7,975 0 1 0 0 0 0 of which: Credit cards 7,890 7,535 355 0 (6) (4) (2) 0 of which: Commodity trade finance 344 344 0 0 0 0 0 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 (3) (3) 0 0 Total off-balance sheet financial instruments and other credit lines 85,728 83,626 1,920 182 (114) (58) (23) (33) Total allowances and provisions (1,029) (181) (160) (688) 1 The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances. ECL coverage ratios for core loan portfolios 30.6.20 Gross carrying amount (USD million) 1 ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 345,741 319,111 23,909 2,721 32 4 99 2,643 of which: Private clients with mortgages 137,720 128,552 8,169 1,000 11 2 113 394 of which: Real estate financing 40,708 34,093 6,601 15 14 3 63 2,541 of which: Large corporate clients 14,684 11,182 3,020 483 210 30 191 4,488 of which: SME clients 13,837 7,866 5,206 765 231 27 55 3,520 of which: Lombard 116,554 116,303 0 251 6 1 0 2,403 of which: Credit cards 1,430 1,074 315 41 242 81 354 3,569 of which: Commodity trade finance 3,278 3,160 30 87 254 15 8 8,973 Other financial assets measured at amortized cost 27,404 26,148 414 842 55 15 241 1,194 of which: Loans to financial advisors 2,789 2,124 208 456 415 161 347 1,627 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 16,313 14,768 1,369 176 29 7 27 1,831 Irrevocable loan commitments 39,651 34,494 5,044 114 31 16 128 0 Committed unconditionally revocable credit lines 37,822 32,892 4,870 60 17 10 65 0 Irrevocable committed prolongation of existing loans 4,265 4,240 25 1 16 16 15 0 1 The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs. 31.3.20 Gross carrying amount (USD million) ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 338,486 320,841 15,060 2,585 28 3 109 2,596 of which: Private clients with mortgages 134,870 126,650 7,224 996 8 1 77 390 of which: Real estate financing 39,146 33,881 5,245 20 12 2 75 2,047 of which: Large corporate clients 15,534 14,349 885 300 123 15 401 4,476 of which: SME clients 12,301 10,470 1,055 775 291 17 188 4,129 of which: Lombard 114,457 114,154 0 303 5 1 0 1,508 of which: Credit cards 1,351 993 322 37 254 72 420 3,708 of which: Commodity trade finance 2,882 2,783 13 87 283 18 1 8,818 Other financial assets measured at amortized cost 23,908 22,850 425 633 60 13 360 1,531 of which: Loans to financial advisors 2,811 2,224 317 271 397 114 418 2,702 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 17,830 17,387 361 83 42 5 30 8,045 Irrevocable loan commitments 28,334 27,701 550 84 16 12 228 0 Committed unconditionally revocable credit lines 34,487 33,509 942 35 11 6 168 0 Irrevocable committed prolongation of existing loans 4,040 4,038 0 2 10 10 0 0 31.12.19 Gross carrying amount (USD million) ECL coverage (bps) Financial instruments measured at amortized cost Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Loans and advances to customers 327,550 309,581 15,661 2,308 23 3 79 2,420 of which: Private clients with mortgages 132,756 124,077 7,679 1,000 8 1 72 406 of which: Real estate financing 38,524 32,937 5,567 21 11 2 62 1,765 of which: Large corporate clients 9,819 9,199 429 192 119 16 100 5,088 of which: SME clients 12,089 9,834 1,464 791 251 18 104 3,420 of which: Lombard 112,915 112,799 0 116 2 0 0 1,566 of which: Credit cards 1,696 1,322 339 35 205 60 404 3,718 of which: Commodity trade finance 2,925 2,831 8 87 278 17 3 8,844 Other financial assets measured at amortized cost 23,123 21,988 463 672 62 16 274 1,420 of which: Loans to financial advisors 2,987 2,370 344 272 366 122 305 2,570 Gross exposure (USD million) ECL coverage (bps) Off-balance sheet (in scope of ECL) Total Stage 1 Stage 2 Stage 3 Total Stage 1 Stage 2 Stage 3 Guarantees 18,142 17,757 304 82 23 4 30 4,032 Irrevocable loan commitments 27,547 27,078 419 50 13 11 120 0 Committed unconditionally revocable credit lines 35,092 33,848 1,197 46 10 5 143 0 Irrevocable committed prolongation of existing loans 3,289 3,285 0 4 8 8 0 0
Total off-balance sheet financial instruments and other credit lines
Maximum Exposure To Credit Risk [Line Items]
Disclosure Of Credit Risk Exposure Explanatory	Note 17 Guarantees, commitments and forward starting transactions The table below presents the maximum irrevocable amount of guarantees, commitments and forward starting transactions. Gross Total gross Sub-participations Net As of 30.6.20, USD million Measured at fair value Not measured at fair value Total guarantees 963 16,313 17,275 (2,627) 14,648 Loan commitments 7,390 39,651 47,042 (782) 46,259 Forward starting transactions 1 Reverse repurchase agreements 37,327 2,206 39,533 Securities borrowing agreements 4 4 Repurchase agreements 43,367 2,172 45,539 As of 31.3.20, USD million Total guarantees 969 17,830 18,800 (2,634) 16,166 Loan commitments 13,514 28,334 41,848 (817) 41,031 Forward starting transactions 1 Reverse repurchase agreements 41,161 5,113 46,275 Securities borrowing agreements 9 9 Repurchase agreements 31,293 1,221 32,515 As of 31.12.19, USD million Total guarantees 986 18,142 19,128 (2,646) 16,482 Loan commitments 6,308 27,547 33,856 (787) 33,069 Forward starting transactions 1 Reverse repurchase agreements 20,284 1,657 21,941 Repurchase agreements 7,740 408 8,148 1 Cash to be paid in the future by either UBS or the counterparty.

Currency translation rates (Tab

Currency translation rates (Tables)	3 Months Ended
	Jun. 30, 2020
Foreign Exchange Rates [Line Items]
Disclosure of foreign exchange rates [text block]	Closing exchange rate Average rate 1 As of For the quarter ended Year-to-date 30.6.20 31.3.20 31.12.19 30.6.19 30.6.20 31.3.20 30.6.19 30.6.20 30.6.19 1 CHF 1.06 1.04 1.03 1.02 1.04 1.04 1.00 1.04 1.00 1 EUR 1.12 1.10 1.12 1.14 1.11 1.10 1.13 1.11 1.13 1 GBP 1.24 1.24 1.32 1.27 1.24 1.28 1.28 1.26 1.30 100 JPY 0.93 0.93 0.92 0.93 0.93 0.93 0.92 0.93 0.91 1 Monthly income statement items of operations with a functional currency other than the US dollar are translated with month-end rates into US dollars. Disclosed average rates for a quarter represent an average of three month-end rates, weighted according to the income and expense volumes of all operations of the Group with the same functional currency for each month. Weighted average rates for individual business divisions may deviate from the weighted average rates for the Group.

Adoption of hedge accounting re

Adoption of hedge accounting requirements of IFRS 9, Financial Instruments (Narrative) (Detail) $ in Millions	3 Months Ended
	Jun. 30, 2020USD ($)
Disclosure Of Adoption Of Hedge Accounting Requirements Of IFRS 9 [Line Items]
Notional amount of hedging instruments and hedged items designated in fair value hedge program of foreign currency risk of issued debt hedged by cross currency basis swaps	$ 13,700
Comprehensive income attributable to shareholders
Disclosure Of Adoption Of Hedge Accounting Requirements Of IFRS 9 [Line Items]
Cost of hedging, net of tax	$ 9

Segment reporting (Narrative) (

Segment reporting (Narrative) (Detail)	3 Months Ended
	Jun. 30, 2020
Disclosure Of Operating Segments [Line Items]
Number of business divisions	4

Segment reporting (Detail)

Segment reporting (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Disclosure Of Operating Segments [Line Items]
Net interest income	$ 1,392	$ 1,330	$ 1,026	$ 2,722	$ 2,149
Non-interest income				13,155	12,633
Income				15,877	14,783
Credit loss (expense) / recovery	(272)	(268)	(12)	(540)	(33)
Total operating income	7,403	7,934	7,532	15,337	14,750
Total operating expenses	5,821	5,926	5,773	11,747	11,445
Operating profit / (loss) before tax	1,582	2,008	1,759	3,591	3,305
Tax expense / (benefit)	347	410	366	757	773
Net profit / (loss)	1,236	1,598	$ 1,393	2,833	2,532
Additional information
Total assets	1,063,838	$ 1,098,099		1,063,838		$ 972,183
Global Wealth Management
Disclosure Of Operating Segments [Line Items]
Net interest income				2,054	1,975
Non-interest income				6,553	6,090
Income				8,606	8,064
Credit loss (expense) / recovery				(117)	(4)
Total operating income				8,489	8,061
Total operating expenses				6,391	6,323
Operating profit / (loss) before tax				2,098	1,737
Additional information
Total assets	327,218			327,218		309,766
Personal & Corporate Banking
Disclosure Of Operating Segments [Line Items]
Net interest income				1,029	994
Non-interest income				886	920
Income				1,914	1,914
Credit loss (expense) / recovery				(187)	1
Total operating income				1,727	1,915
Total operating expenses				1,155	1,139
Operating profit / (loss) before tax				572	777
Additional information
Total assets	209,851			209,851		209,405
Asset Management
Disclosure Of Operating Segments [Line Items]
Net interest income				(9)	(13)
Non-interest income				1,048	934
Income				1,038	921
Credit loss (expense) / recovery				0	0
Total operating income				1,038	921
Total operating expenses				724	693
Operating profit / (loss) before tax				314	228
Additional information
Total assets	34,865			34,865		34,565
Investment Bank
Disclosure Of Operating Segments [Line Items]
Net interest income				3	(403)
Non-interest income				4,914	4,264
Income				4,917	3,860
Credit loss (expense) / recovery				(200)	(24)
Total operating income				4,718	3,836
Total operating expenses				3,396	3,202
Operating profit / (loss) before tax				1,321	634
Additional information
Total assets	349,266			349,266		315,855
Group Functions
Disclosure Of Operating Segments [Line Items]
Net interest income				(354)	(403)
Non-interest income				(246)	425
Income				(600)	23
Credit loss (expense) / recovery				(35)	(6)
Total operating income				(635)	17
Total operating expenses				80	88
Operating profit / (loss) before tax				(715)	$ (71)
Additional information
Total assets	$ 142,638			$ 142,638		$ 102,592

Net interest income (Detail)

Net interest income (Detail) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income
Interest income from loans and deposits	[1]	$ 1,632	$ 1,868	$ 2,065	$ 3,500	$ 4,088
Interest income from securities financing transactions	[2]	202	367	545	569	1,044
Interest income from other financial instruments measured at amortized cost		87	89	83	176	179
Interest income from debt instruments measured at fair value through other comprehensive income		35	17	27	52	52
Interest income from derivative instruments designated as cash flow hedges		178	113	29	290	55
Total interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		2,133	2,455	2,749	4,588	5,419
Interest expense on loans and deposits	[3]	244	463	737	707	1,404
Interest expense on securities financing transactions	[4]	224	219	324	443	612
Interest expense on debt issued		596	676	863	1,272	1,761
Interest expense on lease liabilities		27	28	31	56	63
Total interest expense from financial instruments measured at amortized cost		1,092	1,385	1,955	2,478	3,840
Total net interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		1,041	1,069	794	2,110	1,579
Net Interest income from financial instruments measured at fair value through profit or loss
Net interest income from financial instruments at fair value held for trading		242	201	325	442	759
Net interest income from brokerage balances		182	137	43	318	120
Net interest income from securities financing transactions at fair value not held for trading	[5]	18	33	27	51	57
Interest income from other financial instruments at fair value not held for trading		153	202	233	355	453
Interest expense on other financial instruments designated at fair value		(244)	(311)	(396)	(555)	(819)
Total net interest income from financial instruments measured at fair value through profit or loss		351	261	232	612	571
Net interest income		$ 1,392	$ 1,330	$ 1,026	$ 2,722	$ 2,149
[1]	Consists of interest income from cash and balances at central banks, loans and advances to banks and customers, and cash collateral receivables on derivative instruments, as well as negative interest on amounts due to banks, customer deposits, and cash collateral payables on derivative instruments
[2]	Includes interest income on receivables from securities financing transactions and negative interest, including fees, on payables from securities financing transactions.
[3]	Consists of interest expense on amounts due to banks, cash collateral payables on derivative instruments, and customer deposits, as well as negative interest on cash and balances at central banks, loans and advances to banks, and cash collateral receivables on derivative instruments.
[4]	Includes interest expense on payables from securities financing transactions and negative interest, including fees, on receivables from securities financing transactions.
[5]	Includes interest expense on securities financing transactions designated at fair value.

Net fee and commission income_2

Net fee and commission income (Detail) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net fee And Commission Income [Line Items]
Underwriting Fees		$ 257	$ 200	$ 224	$ 456	$ 379
of which: equity underwriting fees		123	106	118	230	166
of which: debt underwriting fees		133	93	105	227	212
M&A and corporate finance fees		117	218	296	335	413
Brokerage fees		959	1,245	826	2,204	1,654
Investment fund fees		1,197	1,295	1,196	2,492	2,373
Portfolio management and related services		1,813	2,059	1,915	3,872	3,719
Other		387	461	451	848	911
Total fee and commission income	[1]	4,729	5,477	4,907	10,207	9,448
Brokerage fees paid		63	86	88	149	168
Distribution fees paid		144	156	142	300	284
Other		212	214	203	426	390
Total fee and commission expense		419	456	434	875	842
Net fee and commission income		4,311	5,021	4,474	9,332	8,606
of which: net brokerage fees		896	1,158	738	2,055	1,486
Global Wealth Management
Net fee And Commission Income [Line Items]
Total fee and commission income		2,809	3,384	2,946
Personal & Corporate Banking
Net fee And Commission Income [Line Items]
Total fee and commission income		313	354	327
Asset Management
Net fee And Commission Income [Line Items]
Total fee and commission income		700	702	647
Investment Bank
Net fee And Commission Income [Line Items]
Total fee and commission income		872	1,004	962
Group Functions
Net fee And Commission Income [Line Items]
Total fee and commission income		36	33	25
of which: recurring
Net fee And Commission Income [Line Items]
Total fee and commission income		2,980	3,341	3,136	6,320	6,134
of which: transaction-based
Net fee And Commission Income [Line Items]
Total fee and commission income		1,674	2,098	1,749	3,773	3,264
of which: performance-based
Net fee And Commission Income [Line Items]
Total fee and commission income		$ 75	$ 39	$ 23	$ 114	$ 50
[1]	Reflects third-party fee and commission income for the second quarter of 2020 of USD 2,809 million for Global Wealth Management (first quarter of 2020: USD 3,384 million; second quarter of 2019: USD 2,946 million), USD 313 million for Personal & Corporate Banking (first quarter of 2020: USD 354 million; second quarter of 2019: USD 327 million), USD 700 million for Asset Management (first quarter of 2020: USD 702 million; second quarter of 2019: USD 647 million), USD 872 million for the Investment Bank (first quarter of 2020: USD 1,004 million; second quarter of 2019: USD 962 million) and USD 36 million for Group Functions (first quarter of 2020: USD 33 million; second quarter of 2019: USD 25 million).

Other income (Detail)

Other income (Detail) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Associates, joint ventures and subsidiaries
Net gains / (losses) from acquisitions and disposals of subsidiaries	[1]	$ (2)	$ 8	$ 10	$ 7	$ 11
Net gains / (losses) from disposals of investments in associates		0	0	0	0	4
Share of net profits of associates and joint ventures		13	16	10	29	25
Impairments related to associates		0	0	(1)	0	(1)
Total		11	25	20	36	39
Net gains / (losses) from disposals of financial assets measured at fair value through other comprehensive income		15	9	1	24	2
Income from properties	[2]	6	7	7	13	13
Net gains / (losses) from properties held for sale		9	0	7	9	7
Other		0	3	70	3	92
Total other income		$ 41	$ 43	$ 105	$ 84	$ 154
[1]	Includes foreign exchange gains / (losses) reclassified from other comprehensive income related to the disposal or closure of foreign operations
[2]	Includes rent received from third parties.

Personnel expenses (Detail)

Personnel expenses (Detail) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Personnel Expenses [Line Items]
Salaries and variable compensation		$ 2,696	$ 2,561	$ 2,523	$ 5,258	$ 4,943
Financial advisor compensation	[1]	941	1,094	1,005	2,035	1,965
Contractors		91	84	96	176	192
Social security		228	211	195	439	408
Pension and other post-employment benefit plans		202	236	194	438	418
Other personnel expenses		123	135	140	258	269
Total personnel expenses		$ 4,283	$ 4,321	$ 4,153	$ 8,604	$ 8,196
[1]	Financial advisor compensation consists of grid-based compensation based directly on compensable revenues generated by financial advisors and supplemental compensation calculated on the basis of financial advisor productivity, firm tenure, assets and other variables. It also includes expenses related to compensation commitments with financial advisors entered into at the time of recruitment that are subject to vesting requirements.

General and administrative ex_3

General and administrative expenses (Detail) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
General And Administrative Expenses [Line Items]
Occupancy		$ 101	$ 97	$ 91	$ 198	$ 188
Rent and maintenance of IT and other equipment		185	198	168	382	353
Communication and market data services		152	149	157	301	312
Administration		115	148	103	263	226
of which: UK and German bank levies		3	15	(32)	17	(17)
Marketing and public relations	[1]	65	50	72	115	138
Travel and entertainment		31	69	100	101	190
Professional fees		163	160	193	323	370
Outsourcing of IT and other services		228	235	259	463	530
Litigation, regulatory and similar matters	[2]	2	6	4	8	(4)
Other		23	20	28	43	60
Total general and administrative expenses		1,063	1,133	1,175	$ 2,196	$ 2,362
Recoveries from third parties		$ 0	$ 1	$ 1
[1]	Includes charitable donations
[2]	Reflects the net increase in / (release of) provisions for litigation, regulatory and similar matters recognized in the income statement. Refer to Note 16 for more information. Also includes recoveries from third parties (second quarter of 2020: USD 0 million; first quarter of 2020: USD 1 million; second quarter of 2019: USD 1 million).

Income taxes (Narrative) (Detai

Income taxes (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disclosure Income Taxes [Line Items]
Net tax expense	$ 347	$ 410	$ 366	$ 757	$ 773
Effective tax rate	21.90%
Current tax expense / (benefit)	$ 343		209
Deferred tax expense / (benefit)	4		$ 157
Deferred tax expense / (benefit) of changes in previously recognized tax losses carried forward and deductible temporary differences	68
Deferred tax expense / (benefit) resulting from the contribution of certain real estate assets from UBS AG to UBS Americas Inc.	(31)
Expected future deferred tax expense / (benefit) resulting from the contribution of certain real estate assets from UBS AG to UBS Americas Inc. for the remainder of the year	(31)
Deferred tax expense / (benefit) resulting from the decrease or increase in the expected value of future tax deductions for deferred compensation awards	$ (33)

Earnings per share (EPS) and _3

Earnings per share (EPS) and shares outstanding (Detail) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Basic earnings
Net profit / (loss) attributable to shareholders		$ 1,232	$ 1,595	$ 1,392	$ 2,827	$ 2,533
Diluted earnings
Net profit / (loss) attributable to shareholders		1,232	1,595	1,392	2,827	2,533
Less: (profit) / loss on own equity derivative contracts		0	0	0	0	0
Net profit / (loss) attributable to shareholders for diluted EPS		$ 1,232	$ 1,595	$ 1,392	$ 2,827	$ 2,533
Weighted average shares outstanding
Weighted average shares outstanding for basic EPS	[1]	3,584,522,015	3,591,853,051	3,694,660,679	3,588,187,534	3,694,529,827
Effect of dilutive potential shares resulting from notional shares, in-the-money options and warrants outstanding		106,543,728	114,911,986	95,817,338	110,717,626	101,297,249
Weighted average shares outstanding for diluted EPS		3,691,065,743	3,706,765,037	3,790,478,017	3,698,905,160	3,795,827,076
Earnings per share
Basic		$ 0.34	$ 0.44	$ 0.38	$ 0.79	$ 0.69
Diluted		$ 0.33	$ 0.43	$ 0.37	$ 0.76	$ 0.67
Shares outstanding and potentially dilutive instruments
Shares issued		3,859,055,395	3,859,055,395	3,859,055,395	3,859,055,395	3,859,055,395
Treasury shares		271,876,346	274,964,517	199,121,101	271,876,346	199,121,101
Shares outstanding		3,587,179,049	3,584,090,878	3,659,934,294	3,587,179,049	3,659,934,294
Potentially dilutive instruments	[2]	27,456,453	29,801,232	27,263,830	26,911,953	27,239,110
[1]	The weighted average shares outstanding for basic EPS are calculated by taking the number of shares at the beginning of the period, adjusted by the number of shares acquired or issued during the period, multiplied by a time-weighted factor for the period outstanding. As a result, balances are affected by the timing of acquisitions and issuances during the period
[2]	Reflects potential shares that could dilute basic earnings per share in the future, but were not dilutive for the periods presented. It mainly includes equity derivative contracts.

Expected credit loss measurem_3

Expected credit loss measurement - ECL for the period (Narrative) (Detail 1) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	$ 272	$ 268	$ 12	$ 540	$ 33
Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)				187	(1)
Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)				117	4
Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)				200	24
Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)				$ 35	$ 6
Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	202
Positions that are not credit impaired | Update of the forward-looking scenarios
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	127
Positions that are not credit impaired | Effects of expert judgement overlays for Swiss large corporates, small and medium-sized entities, and remeasurements within the loan book
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	75
Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	70
Credit-impaired positions | Personal & Corporate Banking
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	10
Credit-impaired positions | Global Wealth Management
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	19
Credit-impaired positions | Global Wealth Management | Single structured margin-lending position
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	9
Credit-impaired positions | Global Wealth Management | Various positions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	10
Credit-impaired positions | Investment Bank
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	22
Credit-impaired positions | Investment Bank | Real estate investment trusts
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	(16)
Credit-impaired positions | Investment Bank | Various positions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	38
Credit-impaired positions | Group Functions
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	20
Credit-impaired positions | Group Functions | Energy-related exposures
Disclosure Of Provision Matrix [Line Items]
Credit loss expense / (recovery)	$ 20

Expected credit loss measurem_4

Expected credit loss measurement - ECL for the period (Narrative) (Detail 2) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	$ (1,489)	$ (1,282)	$ (1,029)
Upside ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	0.00%	0.00%	7.50%
Baseline ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	70.00%	70.00%	42.50%
Mild downside ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	0.00%	0.00%	35.00%
Global crisis ECL scenario
Disclosure Of Provision Matrix [Line Items]
Assigned weights	30.00%	30.00%	15.00%
Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	$ 636
Positions that are not credit impaired | 100% weight applied to baseline scenario
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	500
Positions that are not credit impaired | 100% weight applied to severe downside scenario
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	1,200
Positions that are not credit impaired | All stage 1 and 2 positions measured for lifetime ECLs with a 70% weight applied to the baseline and 30% to the severe downside scenario
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	$ 1,500

Expected credit loss measurem_5

Expected credit loss measurement - ECL selection of key macro-economic variables (Detail)	3 Months Ended
	Jun. 30, 2020
In the second half of 2020 | Real GDP growth (annual % change, annual average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	4.00%
In the second half of 2020 | Real GDP growth (annual % change, annual average) | Switzerland
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	8.00%
Over two years 2020 and 2021 in cumulative terms | Real estate (annual % change, 4Q average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(4.00%)
Baseline ECL scenario | 2020 | Real GDP growth (annual % change, annual average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(6.40%)
Baseline ECL scenario | 2020 | Real GDP growth (annual % change, annual average) | Eurozone
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(8.20%)
Baseline ECL scenario | 2020 | Real GDP growth (annual % change, annual average) | Switzerland
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(5.50%)
Baseline ECL scenario | 2020 | Unemployment rate (annual %, level, 4Q average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	14.10%
Baseline ECL scenario | 2020 | Unemployment rate (annual %, level, 4Q average) | Eurozone
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	9.80%
Baseline ECL scenario | 2020 | Unemployment rate (annual %, level, 4Q average) | Switzerland
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.90%
Baseline ECL scenario | 2020 | Real estate (annual % change, 4Q average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(2.80%)
Baseline ECL scenario | 2020 | Real estate (annual % change, 4Q average) | Eurozone
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(10.20%)
Baseline ECL scenario | 2020 | Real estate (annual % change, 4Q average) | Switzerland | Single Family Homes
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(0.20%)
Baseline ECL scenario | 2021 | Real GDP growth (annual % change, annual average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	4.50%
Baseline ECL scenario | 2021 | Real GDP growth (annual % change, annual average) | Eurozone
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	6.20%
Baseline ECL scenario | 2021 | Real GDP growth (annual % change, annual average) | Switzerland
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	4.40%
Baseline ECL scenario | 2021 | Unemployment rate (annual %, level, 4Q average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	7.80%
Baseline ECL scenario | 2021 | Unemployment rate (annual %, level, 4Q average) | Eurozone
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	6.60%
Baseline ECL scenario | 2021 | Unemployment rate (annual %, level, 4Q average) | Switzerland
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	3.40%
Baseline ECL scenario | 2021 | Real estate (annual % change, 4Q average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(1.60%)
Baseline ECL scenario | 2021 | Real estate (annual % change, 4Q average) | Eurozone
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	8.60%
Baseline ECL scenario | 2021 | Real estate (annual % change, 4Q average) | Switzerland | Single Family Homes
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	0.50%
Global crisis ECL scenario | 2020 | Real GDP growth (annual % change, annual average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(11.00%)
Global crisis ECL scenario | 2020 | Real GDP growth (annual % change, annual average) | Switzerland
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(11.00%)
Global crisis ECL scenario | 2020 | Unemployment rate (annual %, level, 4Q average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	17.00%
Global crisis ECL scenario | 2020 | Unemployment rate (annual %, level, 4Q average) | Switzerland
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	6.00%
Global crisis ECL scenario | 2020 | Real estate (annual % change, 4Q average) | United States
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(14.00%)
Global crisis ECL scenario | 2020 | Real estate (annual % change, 4Q average) | Switzerland | Single Family Homes
Disclosure of Key Macro Economic Variables Used For Expected Credit Loss Model [Line Items]
Economic forecast	(20.00%)

Expected credit loss measurem_6

Expected credit loss measurement - On-balance sheet financial assets subject to ECL (Detail) - USD ($) $ in Millions		Jun. 30, 2020		Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		$ (1,489)		$ (1,282)	$ (1,029)
Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	661,829	[2]	654,392	583,159
Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	653,205	[2]	646,739	576,815
Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	149,549	[2]	139,258	107,068
Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	15,633	[2]	16,972	12,447
Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	85,271	[2]	89,648	84,245
Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	30,846	[2]	39,545	23,289
Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	344,652	[2]	337,551	326,786
Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	137,563	[2]	134,759	132,646
Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	40,653	[2]	39,097	38,481
Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	14,376	[2]	15,343	9,703
Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	13,518	[2]	11,943	11,786
Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	116,482	[2]	114,401	112,893
Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,396	[2]	1,317	1,661
Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,194	[2]	2,801	2,844
Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	27,253	[2]	23,765	22,980
Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,673	[2]	2,699	2,877
Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,624	[2]	7,653	6,345
Positions that are not credit impaired
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		636
Twelve-month expected credit losses | Positions that are not credit impaired
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(289)		(205)	(181)
Twelve-month expected credit losses | Positions that are not credit impaired | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	634,910	[2]	635,305	564,765
Twelve-month expected credit losses | Positions that are not credit impaired | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	626,286	[2]	627,651	558,420
Twelve-month expected credit losses | Positions that are not credit impaired | Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	149,549	[2]	139,258	107,068
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	15,534	[2]	16,894	12,367
Twelve-month expected credit losses | Positions that are not credit impaired | Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	85,271	[2]	88,394	84,245
Twelve-month expected credit losses | Positions that are not credit impaired | Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	30,846	[2]	39,545	23,289
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	318,977	[2]	320,740	309,499
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	128,527	[2]	126,633	124,063
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	34,083	[2]	33,876	32,932
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	11,148	[2]	14,328	9,184
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	7,845	[2]	10,453	9,817
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	116,292	[2]	114,144	112,796
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,065	[2]	985	1,314
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,155	[2]	2,778	2,826
Twelve-month expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	26,107	[2]	22,820	21,953
Twelve-month expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,090	[2]	2,198	2,341
Twelve-month expected credit losses | Positions that are not credit impaired | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,624	[2]	7,653	6,345
Lifetime expected credit losses | Positions that are not credit impaired
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(346)		(225)	(160)
Lifetime expected credit losses | Positions that are not credit impaired | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	24,176	[2]	15,833	16,069
Lifetime expected credit losses | Positions that are not credit impaired | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	24,176	[2]	15,833	16,069
Lifetime expected credit losses | Positions that are not credit impaired | Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	99	[2]	78	80
Lifetime expected credit losses | Positions that are not credit impaired | Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	449	0
Lifetime expected credit losses | Positions that are not credit impaired | Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	23,673	[2]	14,896	15,538
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,076	[2]	7,168	7,624
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	6,559	[2]	5,205	5,532
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,962	[2]	849	424
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	5,177	[2]	1,036	1,449
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	304	[2]	308	325
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	30	[2]	13	8
Lifetime expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	404	[2]	410	451
Lifetime expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	201	[2]	303	334
Lifetime expected credit losses | Positions that are not credit impaired | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Lifetime expected credit losses | Credit-impaired positions
Disclosure Of Credit Risk Exposure [Line Items]
Total ECL allowances and provisions		(853)		(852)	(688)
Lifetime expected credit losses | Credit-impaired positions | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,743	[2]	3,255	2,326
Lifetime expected credit losses | Credit-impaired positions | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,743	[2]	3,255	2,326
Lifetime expected credit losses | Credit-impaired positions | Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Lifetime expected credit losses | Credit-impaired positions | Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	804	0
Lifetime expected credit losses | Credit-impaired positions | Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,002	[2]	1,914	1,749
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	960	[2]	957	959
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	11	[2]	16	17
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	266	[2]	166	94
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	496	[2]	455	521
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	191	[2]	258	98
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	26	[2]	23	22
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	9	[2]	10	10
Lifetime expected credit losses | Credit-impaired positions | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	741	[2]	536	576
Lifetime expected credit losses | Credit-impaired positions | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	382	[2]	198	202
Lifetime expected credit losses | Credit-impaired positions | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Gross carrying amount | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		345,741	[2]	338,486	327,550
Gross carrying amount | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		137,720	[2]	134,870	132,756
Gross carrying amount | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		40,708	[2]	39,146	38,524
Gross carrying amount | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		14,684	[2]	15,534	9,819
Gross carrying amount | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		13,837	[2]	12,301	12,089
Gross carrying amount | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		116,554	[2]	114,457	112,915
Gross carrying amount | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		1,430	[2]	1,351	1,696
Gross carrying amount | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		3,278	[2]	2,882	2,925
Gross carrying amount | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		27,404	[2]	23,908	23,123
Gross carrying amount | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,789	[2]	2,811	2,987
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		319,111	[2]	320,841	309,581
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		128,552	[2]	126,650	124,077
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		34,093	[2]	33,881	32,937
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		11,182	[2]	14,349	9,199
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		7,866	[2]	10,470	9,834
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		116,303	[2]	114,154	112,799
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		1,074	[2]	993	1,322
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		3,160	[2]	2,783	2,831
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		26,148	[2]	22,850	21,988
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,124	[2]	2,224	2,370
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		23,909	[2]	15,060	15,661
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		8,169	[2]	7,224	7,679
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		6,601	[2]	5,245	5,567
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		3,020	[2]	885	429
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		5,206	[2]	1,055	1,464
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0	[2]	0	0
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		315	[2]	322	339
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		30	[2]	13	8
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		414	[2]	425	463
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		208	[2]	317	344
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		2,721	[2]	2,585	2,308
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		1,000	[2]	996	1,000
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		15	[2]	20	21
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		483	[2]	300	192
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		765	[2]	775	791
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		251	[2]	303	116
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		41	[2]	37	35
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		87	[2]	87	87
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		842	[2]	633	672
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		456	[2]	271	272
Allowance for expected credit loss | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,249)		(1,120)	(915)
Allowance for expected credit loss | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,249)		(1,120)	(915)
Allowance for expected credit loss | Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(6)		(6)	(6)
Allowance for expected credit loss | Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(2)		(34)	(2)
Allowance for expected credit loss | Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1)		0	0
Allowance for expected credit loss | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,089)		(936)	(764)
Allowance for expected credit loss | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(157)		(111)	(110)
Allowance for expected credit loss | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(55)		(49)	(43)
Allowance for expected credit loss | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(308)		(191)	(117)
Allowance for expected credit loss | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(319)		(358)	(303)
Allowance for expected credit loss | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(71)		(56)	(22)
Allowance for expected credit loss | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(35)		(34)	(35)
Allowance for expected credit loss | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(83)		(82)	(81)
Allowance for expected credit loss | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(151)		(143)	(143)
Allowance for expected credit loss | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(116)		(112)	(109)
Allowance for expected credit loss | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(181)		(139)	(124)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(181)		(139)	(124)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(4)		(4)	(4)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(2)		(2)	(2)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1)		0	0
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(134)		(101)	(82)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(25)		(17)	(15)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(10)		(6)	(5)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(34)		(21)	(15)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(21)		(18)	(17)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)		(10)	(4)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(9)		(7)	(8)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)		(5)	(5)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(40)		(31)	(35)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(34)		(25)	(29)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(247)		(195)	(137)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(247)		(195)	(137)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1)		(1)	(1)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		(15)	0
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(236)		(164)	(123)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(93)		(55)	(55)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(42)		(39)	(34)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(58)		(35)	(4)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(29)		(20)	(15)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)		(14)	(14)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(10)		(15)	(13)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(7)		(13)	(11)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(821)		(786)	(655)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(821)		(786)	(655)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Cash and balances at central banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to banks
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1)		(1)	(1)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Receivables from securities financing transactions
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		(16)	0
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Cash collateral receivables on derivative instruments
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(719)		(671)	(559)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(39)		(39)	(41)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(4)		(4)	(4)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(217)		(134)	(98)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(269)		(320)	(271)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(60)		(46)	(18)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(15)		(14)	(13)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(78)		(77)	(77)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(100)		(97)	(95)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(74)		(73)	(70)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 0		$ 0	$ 0
[1]	The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances
[2]	The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs.

Expected credit loss measurem_7

Expected credit loss measurement - Off-balance sheet financial assets subject to ECL (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Provision Matrix [Line Items]
Total exposure	$ 100,262	$ 89,814	$ 85,728
Provisions for expected credit losses	(240)	(162)	(114)
Total ECL allowances and provisions	(1,489)	(1,282)	(1,029)
Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	16,313	17,830	18,142
Provisions for expected credit losses	(47)	(76)	(42)
Guarantees | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,494	3,742	3,687
Provisions for expected credit losses	(8)	(33)	(10)
Guarantees | SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,293	1,308	1,180
Provisions for expected credit losses	(25)	(28)	(24)
Guarantees | Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	6,964	7,965	7,966
Provisions for expected credit losses	(6)	(5)	(5)
Guarantees | Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	602	603	622
Provisions for expected credit losses	(1)	(7)	(1)
Guarantees | Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,601	1,967	2,334
Provisions for expected credit losses	(1)	(1)	(1)
Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	39,651	28,334	27,547
Provisions for expected credit losses	(121)	(46)	(35)
Irrevocable loan commitments | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	23,167	18,224	18,735
Provisions for expected credit losses	(109)	(33)	(27)
Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,210	5,123	1,657
Provisions for expected credit losses	0	0	0
Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	37,822	34,487	35,092
Provisions for expected credit losses	(65)	(36)	(34)
Committed unconditionally revocable credit lines | Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	5,666	4,989	5,242
Provisions for expected credit losses	(25)	(16)	(16)
Committed unconditionally revocable credit lines | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,356	3,784	4,274
Provisions for expected credit losses	(9)	(2)	(1)
Committed unconditionally revocable credit lines | SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,980	4,644	4,787
Provisions for expected credit losses	(17)	(10)	(9)
Committed unconditionally revocable credit lines | Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	9,410	7,649	7,976
Provisions for expected credit losses	(1)	0	0
Committed unconditionally revocable credit lines | Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	8,159	8,295	7,890
Provisions for expected credit losses	(10)	(5)	(6)
Committed unconditionally revocable credit lines | Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure			344
Provisions for expected credit losses			0
Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,265	4,040	3,289
Provisions for expected credit losses	(7)	(4)	(3)
Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total ECL allowances and provisions	636
Twelve-month expected credit losses | Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure	88,604	87,757	83,626
Provisions for expected credit losses	(108)	(66)	(58)
Total ECL allowances and provisions	(289)	(205)	(181)
Twelve-month expected credit losses | Positions that are not credit impaired | Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	14,768	17,387	17,757
Provisions for expected credit losses	(11)	(8)	(8)
Twelve-month expected credit losses | Positions that are not credit impaired | Guarantees | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,640	3,471	3,461
Provisions for expected credit losses	(3)	(1)	(1)
Twelve-month expected credit losses | Positions that are not credit impaired | Guarantees | SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	725	1,185	1,055
Provisions for expected credit losses	(1)	0	0
Twelve-month expected credit losses | Positions that are not credit impaired | Guarantees | Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	6,910	7,949	7,950
Provisions for expected credit losses	(6)	(5)	(4)
Twelve-month expected credit losses | Positions that are not credit impaired | Guarantees | Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	602	603	622
Provisions for expected credit losses	0	0	0
Twelve-month expected credit losses | Positions that are not credit impaired | Guarantees | Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,583	1,951	2,320
Provisions for expected credit losses	(1)	(1)	(1)
Twelve-month expected credit losses | Positions that are not credit impaired | Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	34,494	27,701	27,078
Provisions for expected credit losses	(57)	(34)	(30)
Twelve-month expected credit losses | Positions that are not credit impaired | Irrevocable loan commitments | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	18,284	17,712	18,349
Provisions for expected credit losses	(50)	(26)	(24)
Twelve-month expected credit losses | Positions that are not credit impaired | Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,210	5,123	1,657
Provisions for expected credit losses	0	0	0
Twelve-month expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	32,892	33,509	33,848
Provisions for expected credit losses	(34)	(20)	(17)
Twelve-month expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	5,019	4,679	4,934
Provisions for expected credit losses	(4)	(3)	(3)
Twelve-month expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	3,482	3,697	4,188
Provisions for expected credit losses	(4)	(1)	(1)
Twelve-month expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	2,962	4,492	4,589
Provisions for expected credit losses	(14)	(9)	(8)
Twelve-month expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	9,410	7,649	7,975
Provisions for expected credit losses	(1)	(1)	0
Twelve-month expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	7,726	7,923	7,535
Provisions for expected credit losses	(7)	(4)	(4)
Twelve-month expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure			344
Provisions for expected credit losses			0
Twelve-month expected credit losses | Positions that are not credit impaired | Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,240	4,038	3,285
Provisions for expected credit losses	(7)	(4)	(3)
Lifetime expected credit losses | Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure	11,307	1,852	1,920
Provisions for expected credit losses	(100)	(29)	(23)
Total ECL allowances and provisions	(346)	(225)	(160)
Lifetime expected credit losses | Positions that are not credit impaired | Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,369	361	304
Provisions for expected credit losses	(4)	(1)	(1)
Lifetime expected credit losses | Positions that are not credit impaired | Guarantees | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	733	244	203
Provisions for expected credit losses	(3)	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Guarantees | SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	514	67	67
Provisions for expected credit losses	(1)	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Guarantees | Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	54	16	16
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Guarantees | Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0	0
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Guarantees | Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	18	16	13
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	5,044	550	419
Provisions for expected credit losses	(64)	(13)	(5)
Lifetime expected credit losses | Positions that are not credit impaired | Irrevocable loan commitments | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,838	453	359
Provisions for expected credit losses	(59)	(7)	(3)
Lifetime expected credit losses | Positions that are not credit impaired | Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0	0
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	4,870	942	1,197
Provisions for expected credit losses	(32)	(16)	(17)
Lifetime expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	647	310	307
Provisions for expected credit losses	(21)	(12)	(13)
Lifetime expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	856	70	69
Provisions for expected credit losses	(5)	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	1,984	133	171
Provisions for expected credit losses	(4)	(1)	(1)
Lifetime expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0	0
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	425	371	355
Provisions for expected credit losses	(2)	(2)	(2)
Lifetime expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines | Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure			0
Provisions for expected credit losses			0
Lifetime expected credit losses | Positions that are not credit impaired | Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	25	0	0
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Total exposure	351	204	182
Provisions for expected credit losses	(32)	(66)	(33)
Total ECL allowances and provisions	(853)	(852)	(688)
Lifetime expected credit losses | Credit-impaired positions | Guarantees
Disclosure Of Provision Matrix [Line Items]
Total exposure	176	83	82
Provisions for expected credit losses	(32)	(66)	(33)
Lifetime expected credit losses | Credit-impaired positions | Guarantees | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	121	26	24
Provisions for expected credit losses	(3)	(32)	(9)
Lifetime expected credit losses | Credit-impaired positions | Guarantees | SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	54	56	58
Provisions for expected credit losses	(24)	(27)	(23)
Lifetime expected credit losses | Credit-impaired positions | Guarantees | Financial intermediaries and hedge funds
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0	0
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Guarantees | Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0	0
Provisions for expected credit losses	(1)	(7)	(1)
Lifetime expected credit losses | Credit-impaired positions | Guarantees | Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0	0
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
Total exposure	114	84	50
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Irrevocable loan commitments | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	45	59	27
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0	0
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
Total exposure	60	35	46
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Committed unconditionally revocable credit lines | Real estate financing
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0	0
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Committed unconditionally revocable credit lines | Large corporate clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	18	17	17
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Committed unconditionally revocable credit lines | SME clients
Disclosure Of Provision Matrix [Line Items]
Total exposure	34	18	27
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Committed unconditionally revocable credit lines | Lombard
Disclosure Of Provision Matrix [Line Items]
Total exposure	0	0	1
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Committed unconditionally revocable credit lines | Credit cards
Disclosure Of Provision Matrix [Line Items]
Total exposure	8	0	0
Provisions for expected credit losses	0	0	0
Lifetime expected credit losses | Credit-impaired positions | Committed unconditionally revocable credit lines | Commodity trade finance
Disclosure Of Provision Matrix [Line Items]
Total exposure			0
Provisions for expected credit losses			0
Lifetime expected credit losses | Credit-impaired positions | Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
Total exposure	1	2	4
Provisions for expected credit losses	$ 0	$ 0	$ 0

Expected credit loss measurem_8

Expected credit loss measurement - Coverage ratios (Detail 1) - USD ($) $ in Millions		Jun. 30, 2020		Mar. 31, 2020	Dec. 31, 2019
Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	$ 661,829	[2]	$ 654,392	$ 583,159
Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	653,205	[2]	646,739	576,815
Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	344,652	[2]	337,551	326,786
Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	137,563	[2]	134,759	132,646
Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	40,653	[2]	39,097	38,481
Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	14,376	[2]	15,343	9,703
Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	13,518	[2]	11,943	11,786
Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	116,482	[2]	114,401	112,893
Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,396	[2]	1,317	1,661
Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,194	[2]	2,801	2,844
Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	27,253	[2]	23,765	22,980
Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,673	[2]	2,699	2,877
Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,624	[2]	7,653	6,345
Twelve-month expected credit losses | Positions that are not credit impaired | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	634,910	[2]	635,305	564,765
Twelve-month expected credit losses | Positions that are not credit impaired | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	626,286	[2]	627,651	558,420
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	318,977	[2]	320,740	309,499
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	128,527	[2]	126,633	124,063
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	34,083	[2]	33,876	32,932
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	11,148	[2]	14,328	9,184
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	7,845	[2]	10,453	9,817
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	116,292	[2]	114,144	112,796
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	1,065	[2]	985	1,314
Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	3,155	[2]	2,778	2,826
Twelve-month expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	26,107	[2]	22,820	21,953
Twelve-month expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,090	[2]	2,198	2,341
Twelve-month expected credit losses | Positions that are not credit impaired | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,624	[2]	7,653	6,345
Lifetime expected credit losses | Positions that are not credit impaired | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	24,176	[2]	15,833	16,069
Lifetime expected credit losses | Positions that are not credit impaired | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	24,176	[2]	15,833	16,069
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	23,673	[2]	14,896	15,538
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	8,076	[2]	7,168	7,624
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	6,559	[2]	5,205	5,532
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,962	[2]	849	424
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	5,177	[2]	1,036	1,449
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	304	[2]	308	325
Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	30	[2]	13	8
Lifetime expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	404	[2]	410	451
Lifetime expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	201	[2]	303	334
Lifetime expected credit losses | Positions that are not credit impaired | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Lifetime expected credit losses | Credit-impaired positions | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,743	[2]	3,255	2,326
Lifetime expected credit losses | Credit-impaired positions | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,743	[2]	3,255	2,326
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	2,002	[2]	1,914	1,749
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	960	[2]	957	959
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	11	[2]	16	17
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	266	[2]	166	94
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	496	[2]	455	521
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	191	[2]	258	98
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	26	[2]	23	22
Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	9	[2]	10	10
Lifetime expected credit losses | Credit-impaired positions | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	741	[2]	536	576
Lifetime expected credit losses | Credit-impaired positions | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	382	[2]	198	202
Lifetime expected credit losses | Credit-impaired positions | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	[1]	0	[2]	0	0
Gross carrying amount | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 345,741	[2]	$ 338,486	$ 327,550
ECL coverage		0.32%		0.28%	0.23%
Gross carrying amount | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 137,720	[2]	$ 134,870	$ 132,756
ECL coverage		0.11%		0.08%	0.08%
Gross carrying amount | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 40,708	[2]	$ 39,146	$ 38,524
ECL coverage		0.14%		0.12%	0.11%
Gross carrying amount | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 14,684	[2]	$ 15,534	$ 9,819
ECL coverage		2.10%		1.23%	1.19%
Gross carrying amount | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 13,837	[2]	$ 12,301	$ 12,089
ECL coverage		2.31%		2.91%	2.51%
Gross carrying amount | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 116,554	[2]	$ 114,457	$ 112,915
ECL coverage		0.06%		0.05%	0.02%
Gross carrying amount | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 1,430	[2]	$ 1,351	$ 1,696
ECL coverage		2.42%		2.54%	2.05%
Gross carrying amount | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 3,278	[2]	$ 2,882	$ 2,925
ECL coverage		2.54%		2.83%	2.78%
Gross carrying amount | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 27,404	[2]	$ 23,908	$ 23,123
ECL coverage		0.55%		0.60%	0.62%
Gross carrying amount | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,789	[2]	$ 2,811	$ 2,987
ECL coverage		4.15%		3.97%	3.66%
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 319,111	[2]	$ 320,841	$ 309,581
ECL coverage		0.04%		0.03%	0.03%
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 128,552	[2]	$ 126,650	$ 124,077
ECL coverage		0.02%		0.01%	0.01%
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 34,093	[2]	$ 33,881	$ 32,937
ECL coverage		0.03%		0.02%	0.02%
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 11,182	[2]	$ 14,349	$ 9,199
ECL coverage		0.30%		0.15%	0.16%
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 7,866	[2]	$ 10,470	$ 9,834
ECL coverage		0.27%		0.17%	0.18%
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 116,303	[2]	$ 114,154	$ 112,799
ECL coverage		0.01%		0.01%	0.00%
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 1,074	[2]	$ 993	$ 1,322
ECL coverage		0.81%		0.72%	0.60%
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 3,160	[2]	$ 2,783	$ 2,831
ECL coverage		0.15%		0.18%	0.17%
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 26,148	[2]	$ 22,850	$ 21,988
ECL coverage		0.15%		0.13%	0.16%
Gross carrying amount | Twelve-month expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,124	[2]	$ 2,224	$ 2,370
ECL coverage		1.61%		1.14%	1.22%
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 23,909	[2]	$ 15,060	$ 15,661
ECL coverage		0.99%		1.09%	0.79%
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 8,169	[2]	$ 7,224	$ 7,679
ECL coverage		1.13%		0.77%	0.72%
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 6,601	[2]	$ 5,245	$ 5,567
ECL coverage		0.63%		0.75%	0.62%
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 3,020	[2]	$ 885	$ 429
ECL coverage		1.91%		4.01%	1.00%
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 5,206	[2]	$ 1,055	$ 1,464
ECL coverage		0.55%		1.88%	1.04%
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 0	[2]	$ 0	$ 0
ECL coverage		0.00%		0.00%	0.00%
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 315	[2]	$ 322	$ 339
ECL coverage		3.54%		4.20%	4.04%
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 30	[2]	$ 13	$ 8
ECL coverage		0.08%		0.01%	0.03%
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 414	[2]	$ 425	$ 463
ECL coverage		2.41%		3.60%	2.74%
Gross carrying amount | Lifetime expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 208	[2]	$ 317	$ 344
ECL coverage		3.47%		4.18%	3.05%
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 2,721	[2]	$ 2,585	$ 2,308
ECL coverage		26.43%		25.96%	24.20%
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 1,000	[2]	$ 996	$ 1,000
ECL coverage		3.94%		3.90%	4.06%
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 15	[2]	$ 20	$ 21
ECL coverage		25.41%		20.47%	17.65%
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 483	[2]	$ 300	$ 192
ECL coverage		44.88%		44.76%	50.88%
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 765	[2]	$ 775	$ 791
ECL coverage		35.20%		41.29%	34.20%
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 251	[2]	$ 303	$ 116
ECL coverage		24.03%		15.08%	15.66%
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 41	[2]	$ 37	$ 35
ECL coverage		35.69%		37.08%	37.18%
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 87	[2]	$ 87	$ 87
ECL coverage		89.73%		88.18%	88.44%
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 842	[2]	$ 633	$ 672
ECL coverage		11.94%		15.31%	14.20%
Gross carrying amount | Lifetime expected credit losses | Credit-impaired positions | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 456	[2]	$ 271	$ 272
ECL coverage		16.27%		27.02%	25.70%
Allowance for expected credit loss | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ (1,249)		$ (1,120)	$ (915)
Allowance for expected credit loss | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,249)		(1,120)	(915)
Allowance for expected credit loss | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(1,089)		(936)	(764)
Allowance for expected credit loss | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(157)		(111)	(110)
Allowance for expected credit loss | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(55)		(49)	(43)
Allowance for expected credit loss | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(308)		(191)	(117)
Allowance for expected credit loss | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(319)		(358)	(303)
Allowance for expected credit loss | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(71)		(56)	(22)
Allowance for expected credit loss | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(35)		(34)	(35)
Allowance for expected credit loss | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(83)		(82)	(81)
Allowance for expected credit loss | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(151)		(143)	(143)
Allowance for expected credit loss | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(116)		(112)	(109)
Allowance for expected credit loss | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(181)		(139)	(124)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(181)		(139)	(124)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(134)		(101)	(82)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(25)		(17)	(15)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(10)		(6)	(5)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(34)		(21)	(15)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(21)		(18)	(17)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)		(10)	(4)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(9)		(7)	(8)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(5)		(5)	(5)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(40)		(31)	(35)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(34)		(25)	(29)
Allowance for expected credit loss | Twelve-month expected credit losses | Positions that are not credit impaired | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(247)		(195)	(137)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(247)		(195)	(137)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(236)		(164)	(123)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(93)		(55)	(55)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(42)		(39)	(34)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(58)		(35)	(4)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(29)		(20)	(15)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(11)		(14)	(14)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(10)		(15)	(13)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(7)		(13)	(11)
Allowance for expected credit loss | Lifetime expected credit losses | Positions that are not credit impaired | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		0		0	0
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Total on-balance sheet financial assets in scope of ECL requirements
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(821)		(786)	(655)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Total financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(821)		(786)	(655)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(719)		(671)	(559)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Private clients with mortgages
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(39)		(39)	(41)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Real estate financing
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(4)		(4)	(4)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Large corporate clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(217)		(134)	(98)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | SME clients
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(269)		(320)	(271)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Lombard
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(60)		(46)	(18)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Credit cards
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(15)		(14)	(13)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans and advances to customers | Commodity trade finance
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(78)		(77)	(77)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Other financial assets measured at amortized cost
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(100)		(97)	(95)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Loans to financial advisors
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		(74)		(73)	(70)
Allowance for expected credit loss | Lifetime expected credit losses | Credit-impaired positions | Financial assets measured at fair value through other comprehensive income
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets		$ 0		$ 0	$ 0
[1]	The carrying amount of financial assets measured at amortized cost represents the total gross exposure net of the respective ECL allowances
[2]	The presentation of ECL exposures by stage includes best estimates to account for the effect of management overlays on model outputs.

Expected credit loss measurem_9

Expected credit loss measurement - Coverage ratios (Detail 2) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Provision Matrix [Line Items]
Total exposure	$ 100,262	$ 89,814	$ 85,728
Guarantees
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.29%	0.42%	0.23%
Total exposure	$ 16,313	$ 17,830	$ 18,142
Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.31%	0.16%	0.13%
Total exposure	$ 39,651	$ 28,334	$ 27,547
Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	$ 2,210	$ 5,123	$ 1,657
Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.17%	0.11%	0.10%
Total exposure	$ 37,822	$ 34,487	$ 35,092
Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.16%	0.10%	0.08%
Total exposure	$ 4,265	$ 4,040	$ 3,289
Twelve-month expected credit losses | Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure	$ 88,604	$ 87,757	$ 83,626
Twelve-month expected credit losses | Positions that are not credit impaired | Guarantees
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.07%	0.05%	0.04%
Total exposure	$ 14,768	$ 17,387	$ 17,757
Twelve-month expected credit losses | Positions that are not credit impaired | Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.16%	0.12%	0.11%
Total exposure	$ 34,494	$ 27,701	$ 27,078
Twelve-month expected credit losses | Positions that are not credit impaired | Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	$ 2,210	$ 5,123	$ 1,657
Twelve-month expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.10%	0.06%	0.05%
Total exposure	$ 32,892	$ 33,509	$ 33,848
Twelve-month expected credit losses | Positions that are not credit impaired | Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.16%	0.10%	0.08%
Total exposure	$ 4,240	$ 4,038	$ 3,285
Lifetime expected credit losses | Positions that are not credit impaired
Disclosure Of Provision Matrix [Line Items]
Total exposure	$ 11,307	$ 1,852	$ 1,920
Lifetime expected credit losses | Positions that are not credit impaired | Guarantees
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.27%	0.30%	0.30%
Total exposure	$ 1,369	$ 361	$ 304
Lifetime expected credit losses | Positions that are not credit impaired | Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage	1.28%	2.28%	1.20%
Total exposure	$ 5,044	$ 550	$ 419
Lifetime expected credit losses | Positions that are not credit impaired | Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	$ 0	$ 0	$ 0
Lifetime expected credit losses | Positions that are not credit impaired | Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.65%	1.68%	1.43%
Total exposure	$ 4,870	$ 942	$ 1,197
Lifetime expected credit losses | Positions that are not credit impaired | Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.15%	0.00%	0.00%
Total exposure	$ 25	$ 0	$ 0
Lifetime expected credit losses | Credit-impaired positions
Disclosure Of Provision Matrix [Line Items]
Total exposure	$ 351	$ 204	$ 182
Lifetime expected credit losses | Credit-impaired positions | Guarantees
Disclosure Of Provision Matrix [Line Items]
ECL coverage	18.31%	80.45%	40.32%
Total exposure	$ 176	$ 83	$ 82
Lifetime expected credit losses | Credit-impaired positions | Irrevocable loan commitments
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.00%	0.00%	0.00%
Total exposure	$ 114	$ 84	$ 50
Lifetime expected credit losses | Credit-impaired positions | Forward starting reverse repurchase and securities borrowing agreements
Disclosure Of Provision Matrix [Line Items]
Total exposure	$ 0	$ 0	$ 0
Lifetime expected credit losses | Credit-impaired positions | Committed unconditionally revocable credit lines
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.00%	0.00%	0.00%
Total exposure	$ 60	$ 35	$ 46
Lifetime expected credit losses | Credit-impaired positions | Irrevocable committed prolongation of existing loans
Disclosure Of Provision Matrix [Line Items]
ECL coverage	0.00%	0.00%	0.00%
Total exposure	$ 1	$ 2	$ 4

FVM - Fair value hierarchy - As

FVM - Fair value hierarchy - Assets (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	$ 377,839	$ 418,449	$ 362,448
Measured at fair value on a recurring basis | Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	98,046	90,490	127,514
Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	64,960	55,686	96,787
Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	13,339	13,852	11,464
Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,053	8,654	8,867
Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,612	9,346	7,914
Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,580	2,325	1,971
Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	501	628	512
Measured at fair value on a recurring basis | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	152,008	212,982	121,841
Measured at fair value on a recurring basis | Derivative financial instruments | Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	55,502	55,836	42,558
Measured at fair value on a recurring basis | Derivative financial instruments | Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	53,795	94,730	52,474
Measured at fair value on a recurring basis | Derivative financial instruments | Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	36,991	55,294	22,825
Measured at fair value on a recurring basis | Derivative financial instruments | Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,945	2,243	2,007
Measured at fair value on a recurring basis | Derivative financial instruments | Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	3,304	3,915	1,821
Measured at fair value on a recurring basis | Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	19,848	20,319	18,007
Measured at fair value on a recurring basis | Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	94,292	82,753	83,944
Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	26,392	22,826	27,686
Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	606	549	559
Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	26,714	19,808	15,790
Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	688	641	740
Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	21,316	20,408	19,385
Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	9,340	9,470	11,438
Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7,289	7,056	6,294
Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,393	1,393	1,536
Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	553	602	515
Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,624	7,653	6,345
Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,612	1,705	1,875
Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	378	441	515
Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,634	5,507	3,955
Measured at fair value on a recurring basis | Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	4,890	4,050	4,597
Measured at fair value on a non-recurring basis | Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	130	202	199
Level 1
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	138,755	120,253	161,101
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	82,057	73,693	113,634
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	64,174	54,966	96,161
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	11,057	11,017	9,630
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,282	7,077	7,088
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	537	618	755
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7	16	0
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	868	1,193	356
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments | Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	25	20	6
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments | Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	472	635	240
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments | Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	4	7
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments | Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments | Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	49,389	39,666	40,608
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	26,387	22,826	27,568
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	61	93	103
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	22,175	15,954	12,089
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	188	138	194
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	578	655	653
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,551	1,651	1,906
Level 1 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,515	1,613	1,859
Level 1 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	36	38	47
Level 1 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	4,890	4,050	4,597
Level 1 | Measured at fair value on a non-recurring basis | Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	0	0	0
Level 2
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	230,968	289,832	194,110
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	13,279	14,779	12,068
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	710	535	400
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,272	2,826	1,770
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,744	1,556	1,729
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7,296	8,230	6,617
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	980	1,205	1,180
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	277	428	372
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	149,599	209,344	120,222
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments | Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	55,147	55,398	42,288
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments | Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	53,316	94,070	52,227
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments | Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	36,195	53,989	22,220
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments | Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,540	1,574	1,612
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments | Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	3,302	3,909	1,820
Level 2 | Measured at fair value on a recurring basis | Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	19,848	20,319	18,007
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	41,168	39,388	39,373
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	118
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	3	4
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	4,540	3,853	3,700
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	396	395	448
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	20,737	19,753	18,732
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,317	8,390	10,206
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7,163	6,909	6,148
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 2 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	13	84	16
Level 2 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7,074	6,002	4,439
Level 2 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	98	92	16
Level 2 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	341	404	468
Level 2 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	6,634	5,507	3,955
Level 2 | Measured at fair value on a recurring basis | Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 2 | Measured at fair value on a non-recurring basis | Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	0	0	0
Level 3
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	8,116	8,364	7,237
Level 3 | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[3]	600		700
Level 3 | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[3]	100		100
Level 3 | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value		800		500
Level 3 | Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value		1,400		1,500
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	2,710	2,018	1,812
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	76	185	226
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	10	9	64
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	27	21	50
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	779	498	542
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,600	1,120	791
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value held for trading | Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	218	184	140
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,541	2,445	1,264
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments | Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	330	418	263
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments | Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	7	26	8
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments | Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	795	1,301	597
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments | Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	405	669	394
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments | Commodity contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1	6	0
Level 3 | Measured at fair value on a recurring basis | Brokerage receivables
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	3,735	3,699	3,963
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Financial assets for unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	5	0	0
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	545	454	452
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	103	107	98
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,024	1,081	1,231
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Securities financing transactions
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	126	147	147
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	1,393	1,393	1,536
Level 3 | Measured at fair value on a recurring basis | Financial assets at fair value not held for trading | Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	540	518	499
Level 3 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Government bills / bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Financial assets measured at fair value through other comprehensive income | Asset-backed securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Non-financial assets - Precious metals and other physical commodities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Financial assets measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a non-recurring basis | Other non-financial assets
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Other non-financial assets measured at fair value	[1],[2]	$ 130	$ 202	$ 199
[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	Other non-financial assets primarily consist of properties and other non-current assets held for sale, which are measured at fair value less costs to sell as a result of meeting the held-for-sale criteria.
[3]	The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments.

FVM - Fair value hierarchy - Li

FVM - Fair value hierarchy - Liabilities (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	$ 323,721	$ 361,707	$ 291,452
Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	34,426	32,571	30,591
Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	23,846	22,598	22,734
Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	4,635	4,018	3,661
Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	4,822	4,590	3,466
Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	1,096	1,349	698
Measured at fair value on a recurring basis | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	152,280	206,649	120,880
Measured at fair value on a recurring basis | Derivative financial instruments | Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	54,899	93,217	54,013
Measured at fair value on a recurring basis | Derivative financial instruments | Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	49,894	50,674	36,571
Measured at fair value on a recurring basis | Derivative financial instruments | Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	41,067	55,528	25,468
Measured at fair value on a recurring basis | Derivative financial instruments | Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	2,698	2,940	2,960
Measured at fair value on a recurring basis | Derivative financial instruments | Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	3,138	3,438	1,707
Measured at fair value on a recurring basis | Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	40,248	37,652	37,233
Measured at fair value on a recurring basis | Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	58,864	53,299	66,809
Measured at fair value on a recurring basis | Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	37,902	31,536	35,940
Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	26,573	23,150	28,145
Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	8,371	5,992	5,742
Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	2,852	2,297	2,022
Level 1
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	29,087	28,211	26,176
Level 1 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	28,216	26,965	25,791
Level 1 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	23,464	22,289	22,526
Level 1 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	38	22	40
Level 1 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	4,052	3,880	2,820
Level 1 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	662	774	404
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	871	1,246	385
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments | Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	447	636	248
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments | Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	7	6	7
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments | Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	4	3
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments | Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Derivative financial instruments | Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 1 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 2
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	280,337	321,207	252,518
Level 2 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	6,093	5,463	4,726
Level 2 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	306	282	149
Level 2 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	4,558	3,921	3,606
Level 2 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	770	710	646
Level 2 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	431	532	294
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	148,116	201,770	118,498
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments | Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	54,385	92,515	53,705
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments | Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	49,048	49,776	36,434
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments | Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	39,622	53,968	24,171
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments | Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	1,781	1,875	2,448
Level 2 | Measured at fair value on a recurring basis | Derivative financial instruments | Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	3,128	3,437	1,707
Level 2 | Measured at fair value on a recurring basis | Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	40,248	37,652	37,233
Level 2 | Measured at fair value on a recurring basis | Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	49,123	46,013	56,943
Level 2 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	36,757	30,309	35,119
Level 2 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	26,573	23,150	28,145
Level 2 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	8,371	5,992	5,742
Level 2 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	1,796	1,159	1,231
Level 3
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	14,296	12,289	12,759
Level 3 | Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[2]	100		100
Level 3 | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value		0		0
Level 3 | Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[2]	0		0
Level 3 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	117	143	75
Level 3 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	76	26	59
Level 3 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	39	74	16
Level 3 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Government bills / bonds
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Financial liabilities at fair value held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	2	43	0
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	3,293	3,633	1,996
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments | Foreign exchange contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	67	65	60
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments | Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	838	892	130
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments | Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	1,445	1,557	1,293
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments | Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	917	1,065	512
Level 3 | Measured at fair value on a recurring basis | Derivative financial instruments | Commodity contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	10	0	0
Level 3 | Measured at fair value on a recurring basis | Brokerage payables designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	9,741	7,286	9,866
Level 3 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	1,145	1,227	822
Level 3 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Financial liabilities related to unit-linked investment contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Securities financing transactions
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	0	0	0
Level 3 | Measured at fair value on a recurring basis | Other financial liabilities designated at fair value | Over-the-counter debt instruments
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Financial liabilities measured at fair value	[1]	$ 1,057	$ 1,138	$ 791
[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments.

FVM - Valuation adjustments_ De

FVM - Valuation adjustments: Deferred day-1 P&L (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Deferred Day-1 Profit Or Loss [Line Items]
Reserve balance at the beginning of the period	$ 194	$ 146	$ 161	$ 146	$ 255
Profit / (loss) deferred on new transactions	121	118	58	239	90
(Profit) / loss recognized in the income statement	(72)	(69)	(60)	(141)	(187)
Foreign currency translation	0	(1)	0	(1)	(1)
Reserve balance at the end of the period	$ 243	$ 194	$ 158	$ 243	$ 158

FVM - Transfers between Level 1

FVM - Transfers between Level 1 and Level 2 (Narrative) (Detail)	6 Months Ended
	Jun. 30, 2020
Disclosure Of Fair Value Measurement [Line Items]
Statement that there were no transfers between Level 1 and Level 2 of fair value hierarchy, assets	Assets and liabilities transferred from Level 2 to Level 1 during the first six months of 2020, or from Level 1 to Level 2 during the first six months of 2020, were not material.
Statement that there were no transfers between Level 1 and Level 2 of fair value hierarchy, liabilities	Assets and liabilities transferred from Level 2 to Level 1 during the first six months of 2020, or from Level 1 to Level 2 during the first six months of 2020, were not material.

FVM - Valuation adjustments_ Ow

FVM - Valuation adjustments: Own credit adjustments on financial liabilities designated at fair value (Detail) - Included in Other comprehensive income - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Recognized during the period
Realized gain / (loss)	$ 8	$ 1	$ 6	$ 9	$ 6
Unrealized gain / (loss)	(1,103)	1,156	66	53	(260)
Total gain / (loss), before tax	(1,095)	1,156	72	62	(254)
Recognized on the balance sheet as of the end of the period
Unrealized life-to-date gain / (loss)	$ (31)	$ 1,069	$ 60	$ (31)	$ 60

FVM - Valuation adjustments_ Va

FVM - Valuation adjustments: Valuation adjustments on financial instruments (Detail) - USD ($) $ in Millions		3 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Valuation Adjustments On Financial Instruments [Line Items]
Credit valuation adjustments	[1]	$ (78)	$ (92)	$ (48)
Funding valuation adjustments	[2]	(141)	(378)	(93)
Debit valuation adjustments		1	2	1
Other valuation adjustments		(715)	(879)	(566)
of which: liquidity		(385)	(536)	(300)
of which: model uncertainty		(330)	(343)	(266)
Funding valuation adjustments on structured financing transactions		$ 44	$ 194	$ 43
[1]	Amounts do not include reserves against defaulted counterparties
[2]	Includes FVAs on structured financing transactions of USD 44 million as of 30 June 2020, USD 194 million as of 31 March 2020 and USD 43 million as of 31 December 2019.

FVM - Level 3 instruments_ Valu

FVM - Level 3 instruments: Valuation techniques and inputs (Detail) $ in Millions		3 Months Ended
		Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)	Mar. 31, 2020USD ($)
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[1]	$ 377,839	$ 362,448	$ 418,449
Financial liabilities measured at fair value	[1]	323,721	291,452	361,707
Level 3
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[1]	8,116	7,237	8,364
Financial liabilities measured at fair value	[1]	14,296	12,759	$ 12,289
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		800	500
Financial liabilities measured at fair value		$ 0	$ 0
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds | Relative value to market comparable | Bond price equivalent (% of par) | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0	0
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds | Relative value to market comparable | Bond price equivalent (% of par) | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1.43	1.43
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Corporate and municipal bonds | Relative value to market comparable | Bond price equivalent (% of par) | weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	1.01	1.01
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 3,100	$ 2,400
Financial liabilities measured at fair value		$ 100	$ 0
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees | Relative value to market comparable | Loan price equivalent (% of par) | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0	0
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees | Relative value to market comparable | Loan price equivalent (% of par) | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1	1.01
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees | Relative value to market comparable | Loan price equivalent (% of par) | weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	0.99	0.99
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees | Discounted expected cash flows | Credit spread | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.025	0.0225
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees | Discounted expected cash flows | Credit spread | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.1	0.053
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees | Market comparable and securitization model | Discount margin | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.01	0
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees | Market comparable and securitization model | Discount margin | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.19	0.14
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Traded loans, loans mandatorily at fair value, loan commitments and guarantees | Market comparable and securitization model | Discount margin | weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	0.03	0.02
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 1,400	$ 1,500
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities | Relative value to market comparable | Bond price equivalent (% of par) | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.79	0.79
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities | Relative value to market comparable | Bond price equivalent (% of par) | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.91	0.98
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Auction rate securities | Relative value to market comparable | Bond price equivalent (% of par) | weighted average
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2],[3]	0.8	0.88
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Investment fund units
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[4]	$ 100	$ 100
Financial liabilities measured at fair value	[4]	0	0
Level 3 | Financial assets and liabilities at fair value held for trading, Financial assets at fair value not held for trading: Equity instruments
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value	[4]	600	700
Financial liabilities measured at fair value	[4]	100	100
Level 3 | Debt issued designated at fair value
Disclosure Of Fair Value Measurement [Line Items]
Financial liabilities measured at fair value	[5]	9,700	9,900
Level 3 | Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement [Line Items]
Financial liabilities measured at fair value		$ 1,100	$ 800
Level 3 | Other financial liabilities designated at fair value | Discounted expected cash flows | Funding spread | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0044	0.0044
Level 3 | Other financial liabilities designated at fair value | Discounted expected cash flows | Funding spread | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0175	0.0175
Level 3 | Derivative financial instruments: Interest rate contracts
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 300	$ 300
Financial liabilities measured at fair value		$ 800	$ 100
Level 3 | Derivative financial instruments: Interest rate contracts | Option model | Volatility of interest rates | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0033	0.0015
Level 3 | Derivative financial instruments: Interest rate contracts | Option model | Volatility of interest rates | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.008	0.0063
Level 3 | Derivative financial instruments: Credit derivative contracts
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 400	$ 400
Financial liabilities measured at fair value		$ 900	$ 500
Level 3 | Derivative financial instruments: Credit derivative contracts | Discounted expected cash flows | Bond price equivalent (% of par) | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0	0
Level 3 | Derivative financial instruments: Credit derivative contracts | Discounted expected cash flows | Bond price equivalent (% of par) | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1.13	1
Level 3 | Derivative financial instruments: Credit derivative contracts | Discounted expected cash flows | Credit spread | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	(0.0002)	0.0001
Level 3 | Derivative financial instruments: Credit derivative contracts | Discounted expected cash flows | Credit spread | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.0558	0.07
Level 3 | Derivative financial instruments: Equity / index contracts
Disclosure Of Fair Value Measurement [Line Items]
Financial assets measured at fair value		$ 800	$ 600
Financial liabilities measured at fair value		$ 1,400	$ 1,300
Level 3 | Derivative financial instruments: Equity / index contracts | Option model | Equity dividend yields | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0	0
Level 3 | Derivative financial instruments: Equity / index contracts | Option model | Equity dividend yields | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.14	0.14
Level 3 | Derivative financial instruments: Equity / index contracts | Option model | Volatility of equity stocks, equity and other indices | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.04	0.04
Level 3 | Derivative financial instruments: Equity / index contracts | Option model | Volatility of equity stocks, equity and other indices | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	1.25	1.05
Level 3 | Derivative financial instruments: Equity / index contracts | Option model | Equity-to-FX correlation | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	(0.45)	(0.45)
Level 3 | Derivative financial instruments: Equity / index contracts | Option model | Equity-to-FX correlation | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.61	0.71
Level 3 | Derivative financial instruments: Equity / index contracts | Option model | Equity-to-equity correlation | low
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	(0.17)	(0.17)
Level 3 | Derivative financial instruments: Equity / index contracts | Option model | Equity-to-equity correlation | high
Disclosure Of Fair Value Measurement [Line Items]
Significant unobservable input(s)	[2]	0.99	0.98
[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	The ranges of significant unobservable inputs are represented in points, percentages and basis points. Points are a percentage of par (e.g., 100 points would be 100% of par)
[3]	Weighted averages are provided for non-derivative financial instruments and were calculated by weighting inputs based on the fair values of the respective instruments. Weighted averages are not provided for inputs related to derivative contracts as this would not be meaningful.
[4]	The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments.
[5]	Valuation techniques, significant unobservable inputs and the respective input ranges for Debt issued designated at fair value are the same as the equivalent derivative instruments presented elsewhere in this table.

FVM - Level 3 instruments_ Sens

FVM - Level 3 instruments: Sensitivity to changes in unobservable input assumptions (Detail) - USD ($) $ in Millions		3 Months Ended
		Jun. 30, 2020		Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	$ 824		$ 972	$ 600
Unfavorable changes	[1]	(780)		(1,028)	(547)
Traded loans, loans designated at fair value, loan commitments and guarantees
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	71		165	46
Unfavorable changes	[1]	(83)		(209)	(21)
Securities financing transactions
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	26		35	11
Unfavorable changes	[1]	(26)		(33)	(11)
Auction rate securities
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	105		105	87
Unfavorable changes	[1]	(105)		(105)	(87)
Asset-backed securities
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	45		42	35
Unfavorable changes	[1]	(45)		(51)	(40)
Equity instruments
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	160		150	140
Unfavorable changes	[1]	(92)		(82)	(80)
Interest rate derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	12		16	8
Unfavorable changes	[1]	(23)		(20)	(17)
Credit derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	6	[2]	34	31
Unfavorable changes	[1]	(11)	[2]	(38)	(35)
Foreign exchange derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	14		15	12
Unfavorable changes	[1]	(8)		(13)	(8)
Equity / index derivative contracts, net
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	351		362	183
Unfavorable changes	[1]	(352)		(429)	(197)
Other
Disclosure Of Sensitivity Analysis Of Fair Value Measurement To Changes In Unobservable Inputs Assets And Liabilities [Line Items]
Favorable changes	[1]	35		48	47
Unfavorable changes	[1]	$ (35)		$ (50)	$ (51)
[1]	Sensitivity of issued and over-the-counter debt instruments is reported with the equivalent derivative or securities financing instrument
[2]	Includes refinements applied in estimating valuation uncertainty, resulting from a move to use issuer specific proxy credit default swap curves rather than generic curves.

FVM - Movements of level 3 inst

FVM - Movements of level 3 instruments - Assets (Detail) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2020		Jun. 30, 2019
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[1]	$ 362,448
Transfers into Level 3		400
Transfers out of Level 3		(200)
Balance at the end of period	[1]	377,839
Level 3
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[1]	7,237
Balance at the end of period	[1]	8,116
Level 3 | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[2]	100
Balance at the end of period	[2]	100
Level 3 | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period		500
Balance at the end of period		800
Level 3 | Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period		1,500
Balance at the end of period		1,400
Level 3 | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[2]	700
Balance at the end of period	[2]	600
Level 3 | Financial assets at fair value held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	1,800	[4]	$ 2,000
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	(100)		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	0		0
Purchases	[3]	300		300
Sales	[3]	(1,000)		(1,200)
Issuances	[3]	1,400		800
Settlements	[3]	0		0
Transfers into Level 3	[3]	300		200
Transfers out of Level 3	[3]	0		(300)
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	2,700	[4]	1,600
Level 3 | Financial assets at fair value held for trading | Investment fund units
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	0	[4]	400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	0		0
Purchases	[3]	0		0
Sales	[3]	0		(200)
Issuances	[3]	0		0
Settlements	[3]	0		0
Transfers into Level 3	[3]	0		100
Transfers out of Level 3	[3]	0		(200)
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	0	[4]	200
Level 3 | Financial assets at fair value held for trading | Corporate and municipal bonds
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	500	[4]	700
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	0		0
Purchases	[3]	200		100
Sales	[3]	(200)		(200)
Issuances	[3]	0		0
Settlements	[3]	0		0
Transfers into Level 3	[3]	200		0
Transfers out of Level 3	[3]	0		(100)
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	800	[4]	500
Level 3 | Financial assets at fair value held for trading | Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	800	[4]	700
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	(100)		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	0		0
Purchases	[3]	0		100
Sales	[3]	(600)		(700)
Issuances	[3]	1,400		800
Settlements	[3]	0		0
Transfers into Level 3	[3]	0		0
Transfers out of Level 3	[3]	0		0
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	1,600	[4]	700
Level 3 | Financial assets at fair value held for trading | Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	400	[4]	200
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	0		0
Purchases	[3]	0		100
Sales	[3]	(200)		0
Issuances	[3]	0		0
Settlements	[3]	0		0
Transfers into Level 3	[3]	100		100
Transfers out of Level 3	[3]	0		0
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	300	[4]	300
Level 3 | Financial assets at fair value not held for trading
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	4,000	[4]	4,400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	(100)		300
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	(100)		300
Purchases	[3]	500		300
Sales	[3]	(600)		(400)
Issuances	[3]	0		0
Settlements	[3]	0		0
Transfers into Level 3	[3]	100		200
Transfers out of Level 3	[3]	0		(900)
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	3,700	[4]	3,900
Level 3 | Financial assets at fair value not held for trading | Loans
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	1,200	[4]	1,800
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	0		200
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	0		200
Purchases	[3]	400		100
Sales	[3]	(500)		(100)
Issuances	[3]	0		0
Settlements	[3]	0		0
Transfers into Level 3	[3]	0		200
Transfers out of Level 3	[3]	0		(900)
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	1,000	[4]	1,300
Level 3 | Financial assets at fair value not held for trading | Auction rate securities
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	1,500	[4]	1,700
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	(100)		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	(100)		0
Purchases	[3]	0		0
Sales	[3]	0		(100)
Issuances	[3]	0		0
Settlements	[3]	0		0
Transfers into Level 3	[3]	0		0
Transfers out of Level 3	[3]	0		0
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	1,400	[4]	1,600
Level 3 | Financial assets at fair value not held for trading | Equity instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	500	[4]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	0		100
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	0		100
Purchases	[3]	100		0
Sales	[3]	0		(200)
Issuances	[3]	0		0
Settlements	[3]	0		0
Transfers into Level 3	[3]	100		0
Transfers out of Level 3	[3]	0		0
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	500	[4]	500
Level 3 | Financial assets at fair value not held for trading | Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	700	[4]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	0		0
Purchases	[3]	100		100
Sales	[3]	(100)		0
Issuances	[3]	0		0
Settlements	[3]	0		0
Transfers into Level 3	[3]	0		0
Transfers out of Level 3	[3]	0		0
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	800	[4]	600
Level 3 | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	1,300	[4]	1,400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	300		(200)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	400		(100)
Purchases	[3]	0		0
Sales	[3]	0		0
Issuances	[3]	500		300
Settlements	[3]	(500)		(200)
Transfers into Level 3	[3]	0		200
Transfers out of Level 3	[3]	(100)		(100)
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	1,500	[4]	1,500
Level 3 | Derivative financial instruments | Interest rate contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	300	[4]	400
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	200		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	200		(100)
Purchases	[3]	0		0
Sales	[3]	0		0
Issuances	[3]	0		100
Settlements	[3]	(200)		0
Transfers into Level 3	[3]	0		100
Transfers out of Level 3	[3]	0		0
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	300	[4]	600
Level 3 | Derivative financial instruments | Equity / index contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	600	[4]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	0		(100)
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	100		0
Purchases	[3]	0		0
Sales	[3]	0		0
Issuances	[3]	500		100
Settlements	[3]	(200)		0
Transfers into Level 3	[3]	0		100
Transfers out of Level 3	[3]	(100)		(100)
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	800	[4]	400
Level 3 | Derivative financial instruments | Credit derivative contracts
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	400	[4]	500
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	100		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	100		0
Purchases	[3]	0		0
Sales	[3]	0		0
Issuances	[3]	0		100
Settlements	[3]	(200)		(100)
Transfers into Level 3	[3]	0		0
Transfers out of Level 3	[3]	0		0
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	400	[4]	500
Level 3 | Derivative financial instruments | Other
Disclosure Of Fair Value Measurement Of Assets [Line Items]
Balance at the beginning of the period	[3]	0	[4]	0
Total gains / (losses) included in comprehensive income - Net gains / (losses) included in income	[3],[5]	0		0
Total gains / (losses) included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[3]	0		0
Purchases	[3]	0		0
Sales	[3]	0		0
Issuances	[3]	0		0
Settlements	[3]	0		0
Transfers into Level 3	[3]	0		0
Transfers out of Level 3	[3]	0		0
Foreign currency translation	[3]	0		0
Balance at the end of period	[3]	$ 0	[4]	$ 0
[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	The range of inputs is not disclosed as there is a dispersion of values given the diverse nature of the investments.
[3]	Effective 2020, UBS has enhanced its disclosure of Level 3 movements by excluding from the table the impacts of instruments purchased during the period and sold prior to the end of the period. Prior-period comparatives have been restated accordingly
[4]	Total Level 3 assets as of 30 June 2020 were USD 8.1 billion (31 December 2019: USD 7.2 billion). Total Level 3 liabilities as of 30 June 2020 were USD 14.3 billion (31 December 2019: USD 12.8 billion).
[5]	Net gains / losses included in comprehensive income are comprised of Net interest income, Other net income from financial instruments measured at fair value through profit or loss and Other income.

FVM - Movements of level 3 in_2

FVM - Movements of level 3 instruments - Liabilities (Detail) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2020		Jun. 30, 2019
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[1]	$ 291,452
Transfers into Level 3		1,000
Transfers out of Level 3		(1,300)
Balance at the end of period	[1]	323,721
Level 3
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[1]	12,759
Balance at the end of period	[1]	14,296
Level 3 | Derivative financial liabilities
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	2,000	[3]	$ 2,200
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	1,200		0
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	1,100		(100)
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	500		200
Settlements	[2]	(800)		(400)
Transfers into Level 3	[2]	600		100
Transfers out of Level 3	[2]	(300)		(200)
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	3,300	[3]	1,900
Level 3 | Derivative financial liabilities | Interest rate contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	100	[3]	200
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	700		(100)
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	700		(100)
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	0		0
Settlements	[2]	(300)		0
Transfers into Level 3	[2]	300		0
Transfers out of Level 3	[2]	0		0
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	800	[3]	200
Level 3 | Derivative financial liabilities | Equity / index contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	1,300	[3]	1,400
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	200		0
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	200		(100)
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	500		100
Settlements	[2]	(400)		(300)
Transfers into Level 3	[2]	0		0
Transfers out of Level 3	[2]	(200)		(200)
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	1,400	[3]	1,000
Level 3 | Derivative financial liabilities | Credit derivative contracts
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	500	[3]	500
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	300		0
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	300		0
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	100		100
Settlements	[2]	(100)		(100)
Transfers into Level 3	[2]	300		100
Transfers out of Level 3	[2]	(100)		0
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	900	[3]	600
Level 3 | Derivative financial liabilities | Other
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	100	[3]	100
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	0		0
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	0		0
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	0		0
Settlements	[2]	0		0
Transfers into Level 3	[2]	0		0
Transfers out of Level 3	[2]	0		0
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	100	[3]	100
Level 3 | Debt issued designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	9,900	[3]	11,000
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	200		400
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	300		400
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	3,900		3,900
Settlements	[2]	(3,500)		(2,200)
Transfers into Level 3	[2]	400		300
Transfers out of Level 3	[2]	(1,000)		(2,100)
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	9,700	[3]	11,400
Level 3 | Other financial liabilities designated at fair value
Disclosure Of Fair Value Measurement Of Liabilities [Line Items]
Balance at the beginning of the period	[2]	800	[3]	1,000
Total gains / losses included in comprehensive income - Net gains / losses included in income	[2],[4]	0		100
Total gains / losses included in comprehensive income - of which: related to Level 3 instruments held at the end of the reporting period	[2]	0		100
Purchases	[2]	0		0
Sales	[2]	0		0
Issuances	[2]	600		200
Settlements	[2]	(300)		(700)
Transfers into Level 3	[2]	0		0
Transfers out of Level 3	[2]	0		0
Foreign currency translation	[2]	0		0
Balance at the end of period	[2]	$ 1,100	[3]	$ 700
[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[2]	Effective 2020, UBS has enhanced its disclosure of Level 3 movements by excluding from the table the impacts of instruments purchased during the period and sold prior to the end of the period. Prior-period comparatives have been restated accordingly
[3]	Total Level 3 assets as of 30 June 2020 were USD 8.1 billion (31 December 2019: USD 7.2 billion). Total Level 3 liabilities as of 30 June 2020 were USD 14.3 billion (31 December 2019: USD 12.8 billion).
[4]	Net gains / losses included in comprehensive income are comprised of Net interest income, Other net income from financial instruments measured at fair value through profit or loss and Other income.

FVM - Movements of level 3 in_3

FVM - Movements of level 3 instruments (Narrative) (Detail) $ in Billions	6 Months Ended
	Jun. 30, 2020USD ($)
Disclosure Of Fair Value Measurement [Line Items]
Transfers Into Level 3 Of Fair Value Hierarchy Assets	$ 0.4
Transfers Out Of Level 3 Of Fair Value Hierarchy Assets	$ 0.2
Description Of Reasons For Transfers Into Level 3 Of Fair Value Hierarchy Assets	Transfers into Level 3 mainly consisted of corporate and municipal bonds, reflecting decreased observability of the relevant valuation inputs.
Transfers Into Level 3 Of Fair Value Hierarchy Liabilities	$ 1
Transfers Out Of Level 3 Of Fair Value Hierarchy Liabilities	$ 1.3
Description Of Reasons For Transfers Into Level 3 Of Fair Value Hierarchy Liabilities	Transfers into Level 3 mainly consisted of debt issued designated at fair value, primarily credit-linked and equity-linked issued debt instruments, as well as credit and interest rate derivative contracts due to decreased observability of the relevant valuation inputs.
Description Of Reasons For Transfers Out Of Level 3 Of Fair Value Hierarchy Liabilities	Transfers out of Level 3 mainly consisted of debt issued designated at fair value, primarily equity-linked issued debt instruments, due to increased observability of the embedded derivative inputs.

FVM - Financial instruments not

FVM - Financial instruments not measured at fair value - Assets (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Carrying amount
Cash and balances at central banks		$ 149,549	$ 139,258	$ 107,068
Loans and advances to banks		15,633	16,972	12,447
Receivables from securities financing transactions		85,271	89,648	84,245
Cash collateral receivables on derivative instruments		30,846	39,545	23,289
Loans and advances to customers		344,652	337,551	326,786
Other financial assets measured at amortized cost		27,253	23,765	22,980
Fair Value
Financial assets measured at fair value	[1]	377,839	418,449	362,448
Not measured at fair value
Carrying amount
Cash and balances at central banks		149,500	139,300	107,100
Loans and advances to banks		15,600	17,000	12,400
Receivables from securities financing transactions		85,300	89,600	84,200
Cash collateral receivables on derivative instruments		30,800	39,500	23,300
Loans and advances to customers		344,700	337,600	326,800
Other financial assets measured at amortized cost		27,300	23,800	23,000
Not measured at fair value | Cash and balances at central banks
Fair Value
Financial assets measured at fair value		149,500	139,300	107,100
Not measured at fair value | Loans and advances to banks
Fair Value
Financial assets measured at fair value		15,600	17,000	12,400
Not measured at fair value | Receivables from securities financing transactions
Fair Value
Financial assets measured at fair value		85,300	89,700	84,200
Not measured at fair value | Cash collateral receivables on derivative instruments
Fair Value
Financial assets measured at fair value		30,800	39,500	23,300
Not measured at fair value | Loans and advances to customers
Fair Value
Financial assets measured at fair value		344,700	339,400	329,100
Not measured at fair value | Other financial assets measured at amortized cost
Fair Value
Financial assets measured at fair value		$ 27,800	$ 24,500	$ 23,200
[1]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented

FVM - Financial instruments n_2

FVM - Financial instruments not measured at fair value - Liabilities (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Carrying amount
Amounts due to banks		$ 12,410	$ 18,822	$ 6,570
Payables from securities financing transactions		12,019	12,867	7,778
Cash collateral payables on derivative instruments		36,882	45,649	31,415
Customer deposits		474,254	465,946	448,284
Debt issued measured at amortized cost	[1]	126,744	115,432	110,497
Other financial liabilities measured at amortized cost		9,699	9,934	9,712
Fair Value
Financial liabilities measured at fair value	[2]	323,721	361,707	291,452
Not measured at fair value
Carrying amount
Amounts due to banks		12,400	18,800	6,600
Payables from securities financing transactions		12,000	12,900	7,800
Cash collateral payables on derivative instruments		36,900	45,600	31,400
Customer deposits		474,300	465,900	448,300
Debt issued measured at amortized cost		126,700	115,400	110,500
Other financial liabilities measured at amortized cost	[3]	5,800	6,100	5,800
Not measured at fair value | Amount due to banks
Fair Value
Financial liabilities measured at fair value		12,400	18,800	6,600
Not measured at fair value | Payables from securities financing transactions
Fair Value
Financial liabilities measured at fair value		12,000	12,900	7,800
Not measured at fair value | Cash collateral payables on derivative instruments
Fair Value
Financial liabilities measured at fair value		36,900	45,600	31,400
Not measured at fair value | Customer deposits
Fair Value
Financial liabilities measured at fair value		474,400	466,100	448,400
Not measured at fair value | Debt issued measured at amortized cost
Fair Value
Financial liabilities measured at fair value		127,800	113,000	113,600
Not measured at fair value | Other financial liabilities measured at amortized cost
Fair Value
Financial liabilities measured at fair value	[3]	$ 5,800	$ 6,100	$ 5,700
[1]	Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.
[2]	Bifurcated embedded derivatives are presented on the same balance sheet lines as their host contracts and are not included in this table. The fair value of these derivatives was not material for the periods presented
[3]	Excludes lease liabilities.

Derivative instruments (Narrati

Derivative instruments (Narrative) (Detail) $ in Billions	3 Months Ended
	Jun. 30, 2020USD ($)
Disclosure Of Derivative Instruments [Line Items]
Increase (decrease) in derivative financial assets	$ (61)
Increase (decrease) in derivative financial liabilities	$ (54)

Derivative instruments (Detail)

Derivative instruments (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Derivative financial assets	[1],[2],[3]	$ 152,008	$ 212,982	$ 121,841
Notional values related to derivative financial assets	[1],[2],[3],[4]	4,451,000	5,037,000	4,759,000
Derivative financial liabilities	[1],[2],[3]	152,280	206,649	120,880
Notional values related to derivative financial liabilities	[1],[2],[3],[4]	4,334,000	4,807,000	4,635,000
Other notional values	[1],[2],[3],[5]	11,914,000	12,219,000	12,135,000
Derivative loan commitments		35	43	17
Interest rate contracts
Derivative [Line Items]
Derivative financial assets	[1],[3]	55,500	55,800	42,600
Notional values related to derivative financial assets	[1],[3],[4]	910,000	971,000	1,007,000
Derivative financial liabilities	[1],[3]	49,900	50,700	36,600
Notional values related to derivative financial liabilities	[1],[3],[4]	887,000	924,000	961,000
Other notional values	[1],[3],[5]	11,797,000	12,095,000	11,999,000
Credit derivative contracts
Derivative [Line Items]
Derivative financial assets	[1],[3]	1,900	2,200	2,000
Notional values related to derivative financial assets	[1],[3],[4]	66,000	81,000	70,000
Derivative financial liabilities	[1],[3]	2,700	2,900	3,000
Notional values related to derivative financial liabilities	[1],[3],[4]	68,000	68,000	70,000
Other notional values	[1],[3],[5]	0	0	0
Foreign exchange contracts
Derivative [Line Items]
Derivative financial assets	[1],[3]	53,800	94,700	52,500
Notional values related to derivative financial assets	[1],[3],[4]	2,971,000	3,413,000	3,173,000
Derivative financial liabilities	[1],[3]	54,900	93,200	54,000
Notional values related to derivative financial liabilities	[1],[3],[4]	2,818,000	3,221,000	2,994,000
Other notional values	[1],[3],[5]	2,000	2,000	1,000
Equity / index contracts
Derivative [Line Items]
Derivative financial assets	[1],[3]	37,000	55,300	22,800
Notional values related to derivative financial assets	[1],[3],[4]	376,000	422,000	420,000
Derivative financial liabilities	[1],[3]	41,100	55,500	25,500
Notional values related to derivative financial liabilities	[1],[3],[4]	474,000	487,000	534,000
Other notional values	[1],[3],[5]	105,000	111,000	122,000
Commodity contracts
Derivative [Line Items]
Derivative financial assets	[1],[3]	3,300	3,900	1,800
Notional values related to derivative financial assets	[1],[3],[4]	66,000	73,000	56,000
Derivative financial liabilities	[1],[3]	3,100	3,400	1,700
Notional values related to derivative financial liabilities	[1],[3],[4]	58,000	70,000	60,000
Other notional values	[1],[3],[5]	11,000	11,000	13,000
Unsettled purchases of non-derivative financial instruments
Derivative [Line Items]
Derivative financial assets	[1],[3],[6]	300	400	100
Notional values related to derivative financial assets	[1],[3],[4],[6]	32,000	38,000	17,000
Derivative financial liabilities	[1],[3],[6]	200	400	100
Notional values related to derivative financial liabilities	[1],[3],[4],[6]	12,000	16,000	7,000
Unsettled sales of non-derivative financial instruments
Derivative [Line Items]
Derivative financial assets	[1],[3],[6]	200	500	100
Notional values related to derivative financial assets	[1],[3],[4],[6]	31,000	39,000	15,000
Derivative financial liabilities	[1],[3],[6]	400	500	100
Notional values related to derivative financial liabilities	[1],[3],[4],[6]	$ 18,000	$ 22,000	$ 10,000
[1]	Derivative financial liabilities as of 30 June 2020 include USD 35 million related to derivative loan commitments (31 March 2020: USD 43 million; 31 December 2019: USD 17 million). No notional amounts related to these commitments are included in this table, but they are disclosed in Note 17, under Loan commitments
[2]	Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS or its counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously
[3]	Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The fair value of these derivative instruments was not material for any periods presented. No notional amounts related to these instruments are included in this table, but they are disclosed in Note 17, under Forward starting transactions.
[4]	In cases where derivative financial instruments are presented on a net basis on the balance sheet, the respective notional values of the netted derivative financial instruments are still presented on a gross basis.
[5]	Other notional values relate to derivatives that are cleared through either a central counterparty or an exchange. The fair value of these derivatives is presented on the balance sheet net of the corresponding cash margin under Cash collateral receivables on derivative instruments and Cash collateral payables on derivative instruments and was not material for any periods presented.
[6]	Changes in the fair value of purchased and sold non-derivative financial instruments between trade date and settlement date are recognized as derivative financial instruments.

Offsetting financial assets (De

Offsetting financial assets (Detail) - USD ($) $ in Billions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Derivative financial assets
Disclosure Of Offsetting Of Financial Assets [Line Items]
Assets based on IFRS netting	[1]	$ 152	$ 213	$ 121.8
Further netting potential not recognized on the balance sheet	[2]	(138.1)	(193.2)	(110.7)
of which: netting of recognized financial liabilities	[2]	(112.3)	(160.7)	(89.3)
of which: netting with collateral received	[2]	(25.8)	(32.5)	(21.4)
Assets, after consideration of further netting potential		13.9	19.8	11.1
Cash collateral receivables on derivative instruments
Disclosure Of Offsetting Of Financial Assets [Line Items]
Assets based on IFRS netting	[1]	30.8	39.5	23.3
Further netting potential not recognized on the balance sheet	[2]	(18)	(21.7)	(14.4)
of which: netting of recognized financial liabilities	[2]	(16.7)	(19.6)	(13.3)
of which: netting with collateral received	[2]	(1.3)	(2.1)	(1.1)
Assets, after consideration of further netting potential		$ 12.8	$ 17.9	$ 8.9
[1]	Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS or its counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously
[2]	Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.

Offsetting financial liabilitie

Offsetting financial liabilities (Detail) - USD ($) $ in Billions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Derivative financial liabilities
Disclosure Of Offsetting Of Financial Liabilities [Line Items]
Liabilities based on IFRS netting	[1]	$ 152.3	$ 206.6	$ 120.9
Further netting potential not recognized on the balance sheet	[2]	(134.3)	(186.6)	(106.1)
of which: netting of recognized financial assets	[2]	(112.3)	(160.7)	(89.3)
of which: netting with collateral pledged	[2]	(21.9)	(25.9)	(16.8)
Liabilities, after consideration of further netting potential		18	20.1	14.8
Cash collateral payables on derivative instruments
Disclosure Of Offsetting Of Financial Liabilities [Line Items]
Liabilities based on IFRS netting	[1]	36.9	45.6	31.4
Further netting potential not recognized on the balance sheet	[2]	(20.1)	(24.2)	(18.1)
of which: netting of recognized financial assets	[2]	(18.3)	(21.8)	(16.5)
of which: netting with collateral pledged	[2]	(1.8)	(2.4)	(1.7)
Liabilities, after consideration of further netting potential		$ 16.8	$ 21.5	$ 13.3
[1]	Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS or its counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously
[2]	Reflects the netting potential in accordance with enforceable master netting and similar arrangements where not all criteria for a net presentation on the balance sheet have been met. Refer to “Note 25 Offsetting financial assets and financial liabilities” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.

Other financial assets measured

Other financial assets measured at amortized cost (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Financial Assets [Line Item]
Debt securities		$ 19,062	$ 14,118	$ 14,141
of which: government bills / bonds		9,812	8,458	8,492
Loans to financial advisors	[1]	2,673	2,699	2,877
Fee- and commission-related receivables		1,650	2,094	1,521
Finance lease receivables		1,409	1,386	1,444
Settlement and clearing accounts		317	893	587
Accrued interest income		624	624	742
Other		1,518	1,951	1,669
Total other financial assets measured at amortized cost		$ 27,253	$ 23,765	$ 22,980
[1]	Related to financial advisors in the US and Canada.

Other non-financial assets (Det

Other non-financial assets (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Other Non-Financial Assets [Line Items]
Precious metals and other physical commodities	$ 4,890	$ 4,050	$ 4,597
Bail deposit	1,300	1,273	1,293
Prepaid expenses	980	1,069	927
VAT and other tax receivables	374	384	493
Properties and other non-current assets held for sale	242	202	199
Other	390	657	346
Total other non-financial assets	$ 8,177	$ 7,634	$ 7,856

Other financial liabilities mea

Other financial liabilities measured at amortized cost (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Financial Liabilities [Line Items]
Other accrued expenses	$ 1,607	$ 1,835	$ 1,928
Accrued interest expenses	1,155	1,065	1,562
Settlement and clearing accounts	1,818	1,844	1,379
Lease liabilities	3,850	3,830	3,943
Other	1,268	1,360	900
Total other financial liabilities measured at amortized cost	$ 9,699	$ 9,934	$ 9,712

Other financial liabilities des

Other financial liabilities designated at fair value (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Financial Liabilities [Line Items]
Financial liabilities related to unit-linked investment contracts	$ 26,573	$ 23,150	$ 28,145
Securities financing transactions	8,371	5,992	5,742
Over-the-counter debt instruments	2,852	2,297	2,022
Other	105	96	31
Total other financial liabilities designated at fair value	37,902	31,536	35,940
of which: life-to-date own credit (gain) / loss	$ (64)	$ (217)	$ (4)

Other non-financial liabilities

Other non-financial liabilities (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Other Non-Financial Liabilities [Line Items]
Compensation-related liabilities		$ 5,799	$ 4,514	$ 6,812
of which: Deferred Contingent Capital Plan		1,561	1,464	1,855
of which: financial advisor compensation plans		1,267	1,189	1,463
of which: other compensation plans		1,575	648	2,310
of which: net defined benefit pension and post-employment liabilities		771	629	633
of which: other compensation-related liabilities	[1]	624	585	552
Deferred tax liabilities		675	800	311
Current tax liabilities		875	705	852
VAT and other tax payables		518	575	475
Deferred income		249	219	141
Other		186	245	202
Total other non-financial liabilities		$ 8,302	$ 7,059	$ 8,794
[1]	Includes liabilities for payroll taxes and untaken vacation.

Debt issued designated at fai_3

Debt issued designated at fair value (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Issued debt instruments
Equity-linked	[1]	$ 35,657	$ 32,927	$ 41,722
Rates-linked		13,694	12,898	16,318
Credit-linked		1,866	1,682	1,916
Fixed-rate		4,436	3,797	4,636
Commodity-linked		1,335	1,249	1,567
Other		1,876	746	649
of which: debt that contributes to total loss-absorbing capacity		1,220	259	217
Total debt issued designated at fair value		58,864	53,299	66,809
of which: issued by UBS AG with original maturity greater than one year		41,403	37,364	51,031
of which: life-to-date own credit (gain) / loss		$ 95	$ (852)	$ 92
Unsecured portion of issued debt instruments with original maturity greater than one year		100.00%	100.00%	99.00%
[1]	Includes investment fund unit-linked instruments issued

Debt issued measured at amort_3

Debt issued measured at amortized cost (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Financial Liabilities [Line Items]
Certificates of deposit		$ 16,401	$ 9,246	$ 5,190
Commercial paper		16,156	15,453	14,413
Other short-term debt		3,877	2,468	2,235
Short-term debt	[1]	36,434	27,167	21,837
Senior unsecured debt that contributes to total loss-absorbing capacity (TLAC)		31,258	33,895	30,105
Senior unsecured debt other than TLAC		26,519	22,282	25,569
of which: issued by UBS AG with original maturity greater than one year	[2]	21,729	20,576	22,349
Covered bonds		2,605	2,570	2,633
Subordinated debt		21,130	20,917	21,775
of which: high-trigger loss-absorbing additional tier 1 capital instruments		11,041	10,902	11,931
of which: low-trigger loss-absorbing additional tier 1 capital instruments		2,491	2,464	2,414
of which: low-trigger loss-absorbing tier 2 capital instruments		7,063	7,017	6,892
of which: non-Basel III-compliant tier 2 capital instruments		534	534	540
Debt issued through the Swiss central mortgage institutions		8,795	8,597	8,574
Other long-term debt		3	3	4
Long-term debt	[3]	90,310	88,265	88,660
Total debt issued measured at amortized cost	[4]	$ 126,744	$ 115,432	$ 110,497
Unsecured portion of senior fixed-rate bonds issued with maturity greater than one year		100.00%	100.00%	100.00%
[1]	Debt with an original contractual maturity of less than one year
[2]	Issued by the legal entity UBS AG. Based on original contractual maturity without considering any early redemption features. As of 30 June 2020, 100% of the balance was unsecured (31 March 2020: 100% of the balance was unsecured; 31 December 2019: 100% of the balance was unsecured).
[3]	Debt with an original contractual maturity greater than or equal to one year. The classification of debt issued into short-term and long-term does not consider any early redemption features.
[4]	Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.

Provisions (Detail)

Provisions (Detail) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Other Provisions [Line Items]
Provisions other than provisions for expected credit losses	$ 2,361	$ 2,404	$ 2,861
Provisions for expected credit losses	240	162	114
Total provisions	$ 2,601	$ 2,566	$ 2,974

Provisions (Narrative) (Detail)

Provisions (Narrative) (Detail)	3 Months Ended
	Jun. 30, 2020
Disclosure Of Other Provisions [Line Items]
Description of expected timing of outflows	Severance-related provisions are used within a short time period, usually within six months, but potential changes in amount may be triggered when natural staff attrition reduces the number of people affected by a restructuring event and therefore the estimated costs. Onerous contracts for property are recognized when UBS is committed to pay for non-lease components, such as utilities, service charges, taxes and maintenance, when a property is vacated or not fully recovered from sub-tenants.

Provisions - additional informa

Provisions - additional information (Detail 1) - USD ($) $ in Millions		3 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		$ 2,404
Increase in provisions recognized in the income statement		49
Release of provisions recognized in the income statement		(28)
Provisions used in conformity with designated purpose		(85)
Foreign currency translation / unwind of discount		20
Balance at the end of period		2,361
Personnel related restructuring provisions		51	$ 78	$ 40
Personnel related provisions for onerous lease contracts		55	$ 59	$ 61
Litigation, regulatory and similar matters
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[1],[2]	1,998
Increase in provisions recognized in the income statement	[1],[2]	20
Release of provisions recognized in the income statement	[1],[2]	(18)
Provisions used in conformity with designated purpose	[1],[2]	(33)
Foreign currency translation / unwind of discount	[1],[2]	14
Balance at the end of period	[1],[2]	1,980
Restructuring
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period		142
Increase in provisions recognized in the income statement		20
Release of provisions recognized in the income statement		(8)
Provisions used in conformity with designated purpose		(45)
Foreign currency translation / unwind of discount		1
Balance at the end of period	[3]	111
Other
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	[4]	264
Increase in provisions recognized in the income statement	[4]	8
Release of provisions recognized in the income statement	[4]	(1)
Provisions used in conformity with designated purpose	[4]	(7)
Foreign currency translation / unwind of discount	[4]	5
Balance at the end of period		$ 269
[1]	Comprises provisions for losses resulting from legal, liability and compliance risks
[2]	Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions.
[3]	Primarily consists of personnel-related restructuring provisions of USD 51 million as of 30 June 2020 (31 March 2020: USD 78 million; 31 December 2019: USD 40 million) and provisions for onerous contracts of USD 55 million as of 30 June 2020 (31 March 2020: USD 59 million; 31 December 2019: USD 61 million).
[4]	Mainly includes provisions related to real estate, employee benefits and operational risks.

Provisions - additional infor_2

Provisions - additional information (Detail 2) - USD ($) $ in Millions		Jun. 30, 2020		Mar. 31, 2020		Dec. 31, 2019
Disclosure Of Other Provisions [Line Items]
Balance		$ 2,361		$ 2,404		$ 2,861
Litigation, regulatory and similar matters
Disclosure Of Other Provisions [Line Items]
Balance	[1],[2]	1,980		1,998		2,475
Restructuring
Disclosure Of Other Provisions [Line Items]
Balance		111	[3]	142		106
Other
Disclosure Of Other Provisions [Line Items]
Balance		$ 269		$ 264	[4]	$ 280	[4]
[1]	Comprises provisions for losses resulting from legal, liability and compliance risks
[2]	Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions.
[3]	Primarily consists of personnel-related restructuring provisions of USD 51 million as of 30 June 2020 (31 March 2020: USD 78 million; 31 December 2019: USD 40 million) and provisions for onerous contracts of USD 55 million as of 30 June 2020 (31 March 2020: USD 59 million; 31 December 2019: USD 61 million).
[4]	Mainly includes provisions related to real estate, employee benefits and operational risks.

Litigation, regulatory and si_3

Litigation, regulatory and similar matters (Detail 1) $ in Millions	3 Months Ended
	Jun. 30, 2020USD ($)
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	$ 2,404
Increase in provisions recognized in the income statement	49
Release of provisions recognized in the income statement	(28)
Provisions used in conformity with designated purpose	(85)
Foreign currency translation / unwind of discount	20
Balance at the end of period	2,361
Litigation, regulatory and similar matters
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	1,998	[1],[2]
Increase in provisions recognized in the income statement	20	[1],[2]
Release of provisions recognized in the income statement	(18)	[1],[2]
Provisions used in conformity with designated purpose	(33)	[1],[2]
Foreign currency translation / unwind of discount	14	[1],[2]
Balance at the end of period	1,980	[1],[2]
Litigation, regulatory and similar matters | Global Wealth Management
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	747	[2]
Increase in provisions recognized in the income statement	20
Release of provisions recognized in the income statement	(12)	[2]
Provisions used in conformity with designated purpose	(33)	[2]
Foreign currency translation / unwind of discount	9	[2]
Balance at the end of period	732	[2]
Litigation, regulatory and similar matters | Personal & Corporate Banking
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	112	[2]
Increase in provisions recognized in the income statement	0
Release of provisions recognized in the income statement	(6)	[2]
Provisions used in conformity with designated purpose	0	[2]
Foreign currency translation / unwind of discount	2	[2]
Balance at the end of period	108	[2]
Litigation, regulatory and similar matters | Asset Management
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	0	[2]
Increase in provisions recognized in the income statement	0
Release of provisions recognized in the income statement	0	[2]
Provisions used in conformity with designated purpose	0	[2]
Foreign currency translation / unwind of discount	0	[2]
Balance at the end of period	0	[2]
Litigation, regulatory and similar matters | Investment Bank
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	205	[2]
Increase in provisions recognized in the income statement	1
Release of provisions recognized in the income statement	0	[2]
Provisions used in conformity with designated purpose	(1)	[2]
Foreign currency translation / unwind of discount	2	[2]
Balance at the end of period	207	[2]
Litigation, regulatory and similar matters | Group Functions
Disclosure Of Other Provisions [Line Items]
Balance at the beginning of period	934	[2]
Increase in provisions recognized in the income statement	0
Release of provisions recognized in the income statement	0	[2]
Provisions used in conformity with designated purpose	0	[2]
Foreign currency translation / unwind of discount	0	[2]
Balance at the end of period	$ 934	[2]
[1]	Comprises provisions for losses resulting from legal, liability and compliance risks
[2]	Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions.

Litigation, regulatory and si_4

Litigation, regulatory and similar matters (Detail 2) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Disclosure Of Other Provisions [Line Items]
Balance		$ 2,361	$ 2,404	$ 2,861
Litigation, regulatory and similar matters
Disclosure Of Other Provisions [Line Items]
Balance	[1],[2]	1,980	1,998	2,475
Litigation, regulatory and similar matters | Global Wealth Management
Disclosure Of Other Provisions [Line Items]
Balance	[2]	732	747	782
Litigation, regulatory and similar matters | Personal & Corporate Banking
Disclosure Of Other Provisions [Line Items]
Balance	[2]	108	112	113
Litigation, regulatory and similar matters | Asset Management
Disclosure Of Other Provisions [Line Items]
Balance	[2]	0	0	0
Litigation, regulatory and similar matters | Investment Bank
Disclosure Of Other Provisions [Line Items]
Balance	[2]	207	205	255
Litigation, regulatory and similar matters | Group Functions
Disclosure Of Other Provisions [Line Items]
Balance	[2]	$ 934	$ 934	$ 1,325
[1]	Comprises provisions for losses resulting from legal, liability and compliance risks
[2]	Provisions, if any, for matters described in this disclosure are recorded in Global Wealth Management (item 3 and item 4) and Group Functions (item 2). Provisions, if any, for the matters described in items 1 and 6 of this disclosure are allocated between Global Wealth Management and Personal & Corporate Banking, and provisions, if any, for the matters described in this disclosure in item 5 are allocated between the Investment Bank and Group Functions.

Litigation, regulatory and si_5

Litigation, regulatory and similar matters (Narrative) (Detail 1)	3 Months Ended
	Jun. 30, 2020
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Indication of uncertainties of amount or timing of outflows	Such matters are subject to many uncertainties, and the outcome and the timing of resolution are often difficult to predict, particularly in the earlier stages of a case. There are also situations where the Group may enter into a settlement agreement. This may occur in order to avoid the expense, management distraction or reputational implications of continuing to contest liability, even for those matters for which the Group believes it should be exonerated. The uncertainties inherent in all such matters affect the amount and timing of any potential outflows for both matters with respect to which provisions have been established and other contingent liabilities. The Group makes provisions for such matters brought against it when, in the opinion of management after seeking legal advice, it is more likely than not that the Group has a present legal or constructive obligation as a result of past events, it is probable that an outflow of resources will be required, and the amount can be reliably estimated. Where these factors are otherwise satisfied, a provision may be established for claims that have not yet been asserted against the Group, but are nevertheless expected to be, based on the Group’s experience with similar asserted claims. If any of those conditions is not met, such matters result in contingent liabilities. If the amount of an obligation cannot be reliably estimated, a liability exists that is not recognized even if an outflow of resources is probable. Accordingly, no provision is established even if the potential outflow of resources with respect to such matters could be significant. Developments relating to a matter that occur after the relevant reporting period, but prior to the issuance of financial statements, which affect management’s assessment of the provision for such matter (because, for example, the developments provide evidence of conditions that existed at the end of the reporting period), are adjusting events after the reporting period under IAS 10 and must be recognized in the financial statements for the reporting period.
Explanation of reason for non-disclosure of information regarding provision	In the case of certain matters below, we state that we have established a provision, and for the other matters, we make no such statement. When we make this statement and we expect disclosure of the amount of a provision to prejudice seriously our position with other parties in the matter because it would reveal what UBS believes to be the probable and reliably estimable outflow, we do not disclose that amount. In some cases we are subject to confidentiality obligations that preclude such disclosure. With respect to the matters for which we do not state whether we have established a provision, either: (a) we have not established a provision, in which case the matter is treated as a contingent liability under the applicable accounting standard; or (b) we have established a provision but expect disclosure of that fact to prejudice seriously our position with other parties in the matter because it would reveal the fact that UBS believes an outflow of resources to be probable and reliably estimable.
Explanation of reason for non-disclosure of information regarding contingent liability	It is not practicable to provide an aggregate estimate of liability for our litigation, regulatory and similar matters as a class of contingent liabilities. Doing so would require UBS to provide speculative legal assessments as to claims and proceedings that involve unique fact patterns or novel legal theories, that have not yet been initiated or are at early stages of adjudication, or as to which alleged damages have not been quantified by the claimants. Although UBS therefore cannot provide a numerical estimate of the future losses that could arise from litigation, regulatory and similar matters, UBS believes that the aggregate amount of possible future losses from this class that are more than remote substantially exceeds the level of current provisions. Litigation, regulatory and similar matters may also result in non-monetary penalties and consequences. For example, the non-prosecution agreement UBS entered into with the US Department of Justice (DOJ), Criminal Division, Fraud Section in connection with submissions of benchmark interest rates, including, among others, the British Bankers’ Association London Interbank Offered Rate (LIBOR), was terminated by the DOJ based on its determination that UBS had committed a US crime in relation to foreign exchange matters. As a consequence, UBS AG pleaded guilty to one count of wire fraud for conduct in the LIBOR matter, paid a fine and was subject to probation, which ended in January 2020. A guilty plea to, or conviction of, a crime could have material consequences for UBS. Resolution of regulatory proceedings may require UBS to obtain waivers of regulatory disqualifications to maintain certain operations, may entitle regulatory authorities to limit, suspend or terminate licenses and regulatory authorizations, and may permit financial market utilities to limit, suspend or terminate UBS’s participation in such utilities. Failure to obtain such waivers, or any limitation, suspension or termination of licenses, authorizations or participations, could have material consequences for UBS.

Litigation, regulatory and si_6

Litigation, regulatory and similar matters (Narrative) (Detail 2) - 3 months ended Jun. 30, 2020 € in Millions, $ in Millions	EUR (€)	USD ($)	USD ($)
Inquiries regarding cross-border wealth management businesses | Investigations in France
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Fine provided in announcement of French Court | €	€ 3,700
Civil Damage Award announcement of French Court | €	800
Provision recorded to cover pending legal case	450		$ 506
Inquiries regarding cross-border wealth management businesses | Investigations in France involving UBS AG
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Bail ("caution") ordered to be paid | €	1,100
Inquiries regarding cross-border wealth management businesses | Investigations in France involving UBS (France) S.A.
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Bail ("caution") ordered to be paid | €	40
Reduced bail ("caution") ordered to be paid | €	10
Inquiries regarding cross-border wealth management businesses | Investigations in Italy involving UBS AG
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Settlement made | €	101
Inquiries regarding cross-border wealth management businesses | Investigations in Italy involving UBS AG, UBS Switzerland and UBS Monaco
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Settlement made | €	10.3
Madoff | claims filed in Luxembourg by liquidators of two Luxembourg funds against UBS entities, non-UBS entities and certain individuals
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amounts claimed | €	€ 2,100
Madoff | claims filed in the US by BMIS Trustee against UBS entities and various other parties
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amounts claimed		$ 125
Minimum total claims against all defendants		2,000
Puerto Rico
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amount in dispute		125
Puerto Rico | Customer arbitration claims
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Amounts claimed		3,400
Claimed damages that have been resolved		2,600
Puerto Rico | Action filed on behalf of Employee Retirement System of the Commonwealth of Puerto Rico (System) against over 40 defendants
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Minimum total claims against all defendants		800
Amount of bonds issued and underwritten by the System		3,000
Puerto Rico | claims filed by two US insurance companies that insured issues of Puerto Rico municipal bonds
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Minimum total claims against all defendants		955
Foreign exchange, LIBOR and benchmark rates, and other trading practices - Foreign exchange-related civil litigation | claims under the Commodity Exchange Act
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Settlement made		141
Agreed settlement pending approval		10
Foreign exchange, LIBOR and benchmark rates, and other trading practices - Government Sponsored Entities Bonds matters
Disclosure Of Litigation Regulatory And Similar Matters [Line Items]
Agreed settlement pending approval		$ 250

Guarantees, commitments and f_3

Guarantees, commitments and forward starting transactions (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Guarantees
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount		$ 17,275	$ 18,800	$ 19,128
Sub-participations		(2,627)	(2,634)	(2,646)
Net irrevocable amount		14,648	16,166	16,482
Guarantees | Measured at fair value
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount		963	969	986
Guarantees | Not measured at fair value
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount		16,313	17,830	18,142
Loan commitments
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount		47,042	41,848	33,856
Sub-participations		(782)	(817)	(787)
Net irrevocable amount		46,259	41,031	33,069
Loan commitments | Measured at fair value
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount		7,390	13,514	6,308
Loan commitments | Not measured at fair value
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount		39,651	28,334	27,547
Forward starting transactions - reverse repurchase agreements
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount	[1]	39,533	46,275	21,941
Forward starting transactions - reverse repurchase agreements | Measured at fair value
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount	[1]	37,327	41,161	20,284
Forward starting transactions - reverse repurchase agreements | Not measured at fair value
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount	[1]	2,206	5,113	1,657
Forward starting transactions - securities borrowing agreements
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount	[1]	4	9
Forward starting transactions - securities borrowing agreements | Not measured at fair value
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount	[1]	4	9
Forward starting transactions - repurchase agreements
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount	[1]	45,539	32,515	8,148
Forward starting transactions - repurchase agreements | Measured at fair value
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount	[1]	43,367	31,293	7,740
Forward starting transactions - repurchase agreements | Not measured at fair value
Maximum Exposure To Credit Risk [Line Items]
Gross maximum irrevocable amount	[1]	$ 2,172	$ 1,221	$ 408
[1]	Cash to be paid in the future by either UBS or the counterparty.

Currency translation rates (Det

Currency translation rates (Detail)		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
1 CHF
Foreign Exchange Rates [Line Items]
Closing exchange rate		1.06	1.04	1.02	1.06	1.02	1.03
Average rate	[1]	1.04	1.04	1	1.04	1
1 EUR
Foreign Exchange Rates [Line Items]
Closing exchange rate		1.12	1.1	1.14	1.12	1.14	1.12
Average rate	[1]	1.11	1.1	1.13	1.11	1.13
1 GBP
Foreign Exchange Rates [Line Items]
Closing exchange rate		1.24	1.24	1.27	1.24	1.27	1.32
Average rate	[1]	1.24	1.28	1.28	1.26	1.3
100 JPY
Foreign Exchange Rates [Line Items]
Closing exchange rate		0.93	0.93	0.93	0.93	0.93	0.92
Average rate	[1]	0.93	0.93	0.92	0.93	0.91
[1]	Monthly income statement items of operations with a functional currency other than the US dollar are translated with month-end rates into US dollars. Disclosed average rates for a quarter represent an average of three month-end rates, weighted according to the income and expense volumes of all operations of the Group with the same functional currency for each month. Weighted average rates for individual business divisions may deviate from the weighted average rates for the Group.

Supplemental guarantor consolid

Supplemental guarantor consolidated income statement (Detail) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Condensed Income Statements Captions [Line Items]
Interest income from financial instruments measured at amortized cost and fair value through other comprehensive income		$ 2,133	$ 2,455	$ 2,749	$ 4,588	$ 5,419
Interest expense from financial instruments measured at amortized cost		(1,092)	(1,385)	(1,955)	(2,478)	(3,840)
Net interest income from financial instruments measured at fair value through profit or loss		351	261	232	612	571
Net interest income		1,392	1,330	1,026	2,722	2,149
Other net income from financial instruments measured at fair value through profit or loss		1,932	1,807	1,939	3,738	3,874
Credit loss (expense) / recovery		(272)	(268)	(12)	(540)	(33)
Fee and commission income	[1]	4,729	5,477	4,907	10,207	9,448
Fee and commission expense		(419)	(456)	(434)	(875)	(842)
Net fee and commission income		4,311	5,021	4,474	9,332	8,606
Other income		41	43	105	84	154
Total operating income		7,403	7,934	7,532	15,337	14,750
Personnel expenses		4,283	4,321	4,153	8,604	8,196
General and administrative expenses		1,063	1,133	1,175	2,196	2,362
Depreciation and impairment of property, equipment and software		458	456	427	914	854
Amortization and impairment of goodwill and intangible assets		17	16	18	32	33
Total operating expenses		5,821	5,926	5,773	11,747	11,445
Operating profit / (loss) before tax		1,582	2,008	1,759	3,591	3,305
Tax expense / (benefit)		347	410	366	757	773
Net profit / (loss)		1,236	1,598	1,393	2,833	2,532
Net profit / (loss) attributable to non-controlling interests		3	3	1	6	(1)
Net profit / (loss) attributable to shareholders		$ 1,232	$ 1,595	$ 1,392	$ 2,827	$ 2,533
[1]	Reflects third-party fee and commission income for the second quarter of 2020 of USD 2,809 million for Global Wealth Management (first quarter of 2020: USD 3,384 million; second quarter of 2019: USD 2,946 million), USD 313 million for Personal & Corporate Banking (first quarter of 2020: USD 354 million; second quarter of 2019: USD 327 million), USD 700 million for Asset Management (first quarter of 2020: USD 702 million; second quarter of 2019: USD 647 million), USD 872 million for the Investment Bank (first quarter of 2020: USD 1,004 million; second quarter of 2019: USD 962 million) and USD 36 million for Group Functions (first quarter of 2020: USD 33 million; second quarter of 2019: USD 25 million).

Supplemental guarantor consol_2

Supplemental guarantor consolidated statement of comprehensive income (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)	$ 1,236	$ 1,598	$ 1,393	$ 2,833	$ 2,532
Total other comprehensive income that may be reclassified to the income statement, net of tax	345	1,515	1,006	1,860	1,399
Defined benefit plans, net of tax				(347)	(171)
Own credit on financial liabilities designated at fair value, net of tax				62	(246)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	(1,371)	1,082	74	(289)	(419)
Total other comprehensive income	(1,026)	2,597	1,080	1,571	980
Total comprehensive income	209	4,195	2,473	4,404	3,512
Comprehensive income attributable to shareholders
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)				2,827	2,533
Foreign currency translation, net of tax	261	(145)	168	116	40
Financial assets measured at fair value through other comprehensive income, net of tax	1	147	65	149	128
Cash flow hedges, net of tax	95	1,505	773	1,600	1,232
Cost of hedging, net of tax	(13)	8		(4)
Total other comprehensive income that may be reclassified to the income statement, net of tax	345	1,515	1,006	1,860	1,399
Defined benefit plans, net of tax	(500)	153	8	(347)	(171)
Own credit on financial liabilities designated at fair value, net of tax	(872)	934	72	62	(246)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	(1,372)	1,086	80	(286)	(417)
Total other comprehensive income	(1,027)	2,602	1,086	1,575	982
Total comprehensive income	205	4,197	2,478	4,402	3,515
Comprehensive income attributable to non-controlling interests
Condensed Statement Of Income Captions [Line Items]
Net profit / (loss)				6	(1)
Foreign currency translation, net of tax	1	(5)	(6)	(4)	(2)
Total other comprehensive income that will not be reclassified to the income statement, net of tax	1	(5)	(6)	(4)	(2)
Total other comprehensive income	1	(5)	(6)	(4)	(2)
Total comprehensive income	$ 4	$ (2)	$ (5)	$ 3	$ (3)

Supplemental guarantor consol_3

Supplemental guarantor consolidated balance sheet (Detail) - USD ($) $ in Millions		Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Assets
Cash and balances at central banks		$ 149,549	$ 139,258	$ 107,068
Loans and advances to banks		15,633	16,972	12,447
Receivables from securities financing transactions		85,271	89,648	84,245
Cash collateral receivables on derivative instruments		30,846	39,545	23,289
Loans and advances to customers		344,652	337,551	326,786
Other financial assets measured at amortized cost		27,253	23,765	22,980
Total financial assets measured at amortized cost		653,205	646,739	576,815
Financial assets at fair value held for trading		98,046	90,490	127,514
of which: assets pledged as collateral that may be sold or repledged by counterparties		38,505	31,192	41,285
Derivative financial instruments	[1],[2],[3]	152,008	212,982	121,841
Brokerage receivables		19,848	20,319	18,007
Financial assets at fair value not held for trading		94,292	82,753	83,944
Total financial assets measured at fair value through profit or loss		364,194	406,544	351,307
Financial assets measured at fair value through other comprehensive income		8,624	7,653	6,345
Investments in subsidiaries and associates		1,054	1,042	1,051
Property, equipment and software		12,875	12,764	12,804
Goodwill and intangible assets		6,414	6,407	6,469
Deferred tax assets		9,294	9,316	9,537
Other non-financial assets		8,177	7,634	7,856
Total assets		1,063,838	1,098,099	972,183
Liabilities
Amounts due to banks		12,410	18,822	6,570
Payables from securities financing transactions		12,019	12,867	7,778
Cash collateral payables on derivative instruments		36,882	45,649	31,415
Customer deposits		474,254	465,946	448,284
Debt issued measured at amortized cost	[4]	126,744	115,432	110,497
Other financial liabilities measured at amortized cost		9,699	9,934	9,712
Total financial liabilities measured at amortized cost		672,007	668,649	614,256
Financial liabilities at fair value held for trading		34,426	32,571	30,591
Derivative financial instruments	[1],[2],[3]	152,280	206,649	120,880
Brokerage payables designated at fair value		40,248	37,652	37,233
Debt issued designated at fair value		58,864	53,299	66,809
Other financial liabilities designated at fair value		37,902	31,536	35,940
Total financial liabilities measured at fair value through profit or loss		323,721	361,707	291,452
Provisions		2,601	2,566	2,974
Other non-financial liabilities		8,302	7,059	8,794
Total liabilities		1,006,630	1,039,981	917,476
Equity
Equity attributable to shareholders		57,035	57,949	54,533
Equity attributable to non-controlling interests		173	169	174
Total equity before the adoption of IFRIC 23						$ 53,103
Total equity		57,207	58,118	54,707	$ 53,350	$ 53,092
Total liabilities and equity		$ 1,063,838	$ 1,098,099	$ 972,183
[1]	Derivative financial liabilities as of 30 June 2020 include USD 35 million related to derivative loan commitments (31 March 2020: USD 43 million; 31 December 2019: USD 17 million). No notional amounts related to these commitments are included in this table, but they are disclosed in Note 17, under Loan commitments
[2]	Financial assets and liabilities are presented net on the balance sheet if UBS has the unconditional and legally enforceable right to offset the recognized amounts, both in the normal course of business and in the event of default, bankruptcy or insolvency of UBS or its counterparties, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously
[3]	Includes certain forward starting repurchase and reverse repurchase agreements that are classified as measured at fair value through profit or loss and are recognized within derivative instruments. The fair value of these derivative instruments was not material for any periods presented. No notional amounts related to these instruments are included in this table, but they are disclosed in Note 17, under Forward starting transactions.
[4]	Net of bifurcated embedded derivatives, the fair value of which was not material for the periods presented.

Supplemental guarantor consol_4

Supplemental guarantor consolidated statement of cash flows (Detail) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Condensed Cash Flow Statements Captions [Line Items]
Net cash flow from / (used in) operating activities		$ 40,781	$ 1,649
Cash flow from / (used in) investing activities
Purchase of subsidiaries, associates and intangible assets		(1)	(5)
Disposal of subsidiaries, associates and intangible assets		14	100
Purchase of property, equipment and software		(831)	(782)
Disposal of property, equipment and software		6	8
Purchase of financial assets measured at fair value through other comprehensive income		(4,132)	(1,757)
Disposal and redemption of financial assets measured at fair value through other comprehensive income		1,944	1,160
Net (purchase) / redemption of debt securities measured at amortized cost		(4,817)	653
Net cash flow from / (used in) investing activities		(7,817)	(623)
Cash flow from / (used in) financing activities
Net short-term debt issued / (repaid)		14,912	(14,248)
Distributions paid on UBS shares		(1,308)	(2,544)
Repayment of lease liabilities	[1]	(273)
Issuance of long-term debt, including debt issued designated at fair value		46,059	31,471
Repayment of long-term debt, including debt issued designated at fair value		(46,137)	(25,931)
Net changes in non-controlling interests		(4)	(6)
Net cash flow from / (used in) financing activities		12,368	(12,301)
Total cash flow
Cash and cash equivalents at the beginning of the period		119,873	126,079
Net cash flow from / (used in) operating, investing and financing activities		45,332	(11,275)
Effects of exchange rate differences on cash and cash equivalents		1,563	613
Cash and cash equivalents at the end of the period	[2]	166,768	115,417
Net cash flow from / (used in) operating activities includes:
of which: cash and balances at central banks	[3]	149,430	101,341
of which: loans and advances to banks		14,428	12,108
of which: money market paper		$ 2,911	$ 1,968
[1]	In 2019, cash payments for the principal portion of the lease liability were classified within operating activities under Financial assets at fair value not held for trading, other financial assets and liabilities
[2]	USD 5,393 million and USD 3,161 million of cash and cash equivalents (mainly reflected in Loans and advances to banks) were restricted as of 30 June 2020 and 30 June 2019, respectively. Refer to “Note 26 Restricted and transferred financial assets” in the “Consolidated financial statements” section of the Annual Report 2019 for more information.
[3]	Includes only balances with an original maturity of three months or less.