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Risks Arising from Financial Instruments - Summary of Carrying Amount of Fixed Rate Interest-Bearing Financial Liabilities and Fair Value (Detail) - Fixed interest rate [member] - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of interest bearing financial instruments [line items] |  |
Carrying amount | $ (73,449) | $ (75,769)
Fair value | (75,135) | (73,008)
US Dollar [member] |  |
Disclosure of interest bearing financial instruments [line items] |  |
Carrying amount | (49,917) | (52,993)
Fair value | (52,268) | (52,158)
Euro [member] |  |
Disclosure of interest bearing financial instruments [line items] |  |
Carrying amount | (20,379) | (19,655)
Fair value | (19,796) | (17,926)
Pound Sterling [member] |  |
Disclosure of interest bearing financial instruments [line items] |  |
Carrying amount | (2,069) | (2,148)
Fair value | (2,012) | (2,039)
Canadian Dollar [member] |  |
Disclosure of interest bearing financial instruments [line items] |  |
Carrying amount | (526) | (515)
Fair value | (505) | (437)
Other currency [member] |  |
Disclosure of interest bearing financial instruments [line items] |  |
Carrying amount | (558) | (458)
Fair value | $ (554) | $ (448)

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- Definition Line items represents information about interest bearing financial instruments. + References No definition available. + Details
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- Definition Fixed rate interest bearing loans carrying value. + References No definition available. + Details
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- Definition Fixed rate interest bearing loans fair value. + References No definition available. + Details
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- Details
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- Details
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