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Risks Arising from Financial Instruments - Summary of Foreign Exchange Results Recognized on Unhedged and Hedged Exposures (Detail) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Net foreign exchange results [line items] |  |  |
Net foreign exchange | $ (84) | $ 14 | $ (180)
Economic Hedges [Member] |  |  |
Net foreign exchange results [line items] |  |  |
Net foreign exchange | 717 | (181) | 6
Other Results - Not Hedged [Member] |  |  |
Net foreign exchange results [line items] |  |  |
Net foreign exchange | $ (801) | $ 195 | $ (186)

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- Definition Net foreign exchange results. + References No definition available. + Details
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- Definition The fair value of financial instruments designated as hedging instruments. Hedging instruments are designated derivatives or (for a hedge of the risk of changes in foreign currency exchange rates only) designated non-derivative financial assets or non-derivative financial liabilities whose fair value or cash flows are expected to offset changes in the fair value or cash flows of a designated hedged item. [Refer: At fair value [member]; Derivatives [member]; Derivative financial assets; Derivative financial liabilities; Financial instruments, class [member]; Financial assets; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 22 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_22_b&doctype=Standard&book=b -URIDate 2021-03-24 + Details
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- Details
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- Details
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