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Assets Classified as Held for Sale, Liabilities Associated With Assets Held for Sale and Discontinued Operations - Summary of Liabilities Associated With Assets Held for Sale (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of Assets and Liabilities of Disposal Groups Classified as Held for Sale [abstract]
Balance at the end of previous year		$ 1,145
Reclassified to liabilities associated with assets held for sale	5	(46)
Disposals	(5)	(1,044)
Effect of movements in foreign exchange		(55)
Balance at the end of year

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- Definition

Disclosure of Assets and Liabilities of Disposal Groups Classified as Held for Sale Explanatory [abstract]

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No definition available.

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- Definition

Fair value of liabilities linked to assets that were reclassified as held for sale.

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No definition available.

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- Definition

Liabilities held for sale effect of movements in foreign exchange.

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No definition available.

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- Definition

Reclassification to liabilities held for sale.

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No definition available.

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- Definition

The amount of current liabilities other than liabilities included in disposal groups classified as held for sale. [Refer: Current liabilities; Disposal groups classified as held for sale [member]; Liabilities included in disposal groups classified as held for sale]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 69
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_69&doctype=Standard
-URIDate 2021-03-24

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