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Risks Arising from Financial Instruments - Summary of Offsetting Financial Assets and Liabilities (Detail) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Derivatives [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Gross amount | $ 670 | $ 965
Net amount recognized in the statement of financial position | 670 | 965
Other offsetting agreements | (651) | (954)
Total net amount | 19 | 11
Derivative liabilities [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Gross amount | (5,886) | (6,804)
Net amount recognized in the statement of financial position | (5,886) | (6,804)
Other offsetting agreements | 651 | 954
Total net amount | $ (5,235) | $ (5,851)

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- Definition The gross amount of recognised financial assets that are subject either to offsetting or to an enforceable master netting arrangement or similar agreement. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 13C -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_13C_a&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount of financial liabilities set off against financial assets when an entity: (a) currently has a legally enforceable right to set off the recognised amounts; and (b) intends either to settle on a net basis or to realise the asset and settle the liability simultaneously. [Refer: Financial assets; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 13C -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_13C_b&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The amount remaining after deducting the amounts subject to an enforceable master netting arrangement or similar agreement that were not set off against financial assets, from the net amount of financial assets subject to offsetting or subject to an enforceable master netting arrangement or similar agreement presented in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2021-01-01 -Paragraph 13C -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_13C_e&doctype=Standard -URIDate 2021-03-24 + Details
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