Cash and cash equivalents - Additional information (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of cash and cash equivalents [Line Items]
Restricted cash and cash equivalents	$ 391	$ 235
Repayment of third party borrowings	268	165
Reverse repurchase agreements	850	4,520
Fair value of collateral	892	4,638
Subsidiaries
Disclosure of cash and cash equivalents [Line Items]
Restricted cash and cash equivalents	576	981
Repayment of third party borrowings	$ 336	$ 752

The fair value of collateral held that is permitted to be sold or repledged in the absence of default by the owner of the collateral. [Refer: At fair value [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 15
-Subparagraph a
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-URIDate 2021-03-24

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- Definition

The amount of cash and cash equivalents whose use or withdrawal is restricted. [Refer: Cash and cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

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- Definition

The amount of instruments purchased for resale in reverse repurchase agreements and cash collateral on securities borrowed. [Refer: Repurchase agreements and cash collateral on securities lent]

+ References

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- Definition

Disclosure of cash and cash equivalents [Line Items]

+ References

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- Definition

Restricted cash and cash equivalent available to repay borrowings.

+ References

No definition available.

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