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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 | 6 Months Ended | 12 Months Ended
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Jun. 30, 2020 | Dec. 31, 2019
Disclosure of Assets and Liabilities of Disposal Groups Classified as Held for Sale [abstract] |  |
Balance at the end of previous year | $ 1,145 | $ 0
Reclassified to liabilities associated with assets held for sale | (46) | 1,106
Disposals from SAB transaction-related divestitures | (1,044) | 0
Effect of movements in foreign exchange | (55) | 39
Balance at the end of year | $ 0 | $ 1,145

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- Definition Disclosure of Assets and Liabilities of Disposal Groups Classified as Held for Sale Explanatory [abstract] + References No definition available. + Details
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- Definition Fair value of liabilities linked to assets that were reclassified as held for sale. + References No definition available. + Details
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- Definition Liabilities held for sale effect of movements in foreign exchange. + References No definition available. + Details
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- Definition Reclassification to liabilities held for sale. + References No definition available. + Details
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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] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 69 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_69&doctype=Standard -URIDate 2019-03-27 + Details
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