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FVM - Valuation adjustments: Deferred day-1 P&L (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Deferred Day-1 Profit Or Loss [Line Items]
Reserve balance at the beginning of the period	$ 399	$ 422	$ 425	$ 422	$ 418
Profit / (loss) deferred on new transactions	78	91	86	169	161
(Profit) / loss recognized in the income statement	(75)	(113)	(58)	(188)	(127)
Foreign currency translation	(1)	0	(1)	(1)	(1)
Reserve balance at the end of the period	$ 402	$ 399	$ 451	$ 402	$ 451

X

- Definition

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]]

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- Definition

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The increase (decrease) in the aggregate difference between the fair value at initial recognition and the transaction price of financial instruments yet to be recognised in profit or loss resulting from foreign currency translation.

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