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Financial Instruments - Summary of Derivative Financial Instruments (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Disclosure of detailed information about financial instruments [line items] |  |
Derivative financial instrument, Notional amount | $ 2,230 | $ 2,324
Derivative financial instrument, Fair value | (81) | (100)
Net Investment Hedges [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Derivative financial instrument, Notional amount | 741 | 1,154
Derivative financial instrument, Fair value | (42) | (67)
Equity forwards on third party shares [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Derivative financial instrument, Notional amount | 27 | 74
Derivative financial instrument, Fair value | 3 | 1
Interest Rate Swap Contract [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Derivative financial instrument, Notional amount | 1,334 | 1,000
Derivative financial instrument, Fair value | (47) | (35)
Fuels Price Hedging [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Derivative financial instrument, Notional amount | 128 | 96
Derivative financial instrument, Fair value | $ 5 | $ 1

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References No definition available. + Details
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- Definition Financial assets liabilities at fair value. + References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- Details
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- Details
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- Details
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- Details
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