FVM - Valuation adjustments reserves on the balance sheet (Detail) - USD ($) $ in Millions	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Valuation Adjustment Reserves On The Balance Sheet [Line Items]
Deferred day-1 profit or loss reserves	$ 405	$ 387	$ 269	$ 243	$ 194	$ 146
Own credit adjustments on financial liabilities designated at fair value	(278)	(400)	(381)
CVAs, FVAs, DVAs and other valuation adjustments	$ (956)	$ (977)	$ (959)

The aggregate difference between the fair value at initial recognition and the transaction price for financial instruments that is yet to be recognised in profit or loss. [Refer: Financial instruments, class [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 28
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_28_b&doctype=Standard
-URIDate 2020-01-01

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- Definition

A component of equity representing the accumulated change in fair value of financial liabilities attributable to change in the credit risk of the liabilities. [Refer: Credit risk [member]; Financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 78
-Subparagraph e
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_e&doctype=Standard
-URIDate 2020-01-01

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- Definition

The aggregate amount of credit valuation adjustments, funding valuation adjustments, debit valuation adjustments, and other valuation adjustments.

+ References

No definition available.

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- References

No definition available.

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