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Deferred Income Tax - Summary of Deferred Income Tax Liabilities (Taxable Temporary Differences) (Detail) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]    
Taxable temporary differences principally attributable to accelerated tax depreciation and fair value adjustments arising on acquisition [1] $ 3,218 $ 3,123
Leased right-of-use assets 314 315
Investment in subsidiaries 164 161
Surpluses on Group retirement benefit schemes 9  
Revaluation of derivative financial instruments to fair value 15 12
Rolled-over capital gains 22 17
Total $ 3,742 $ 3,628
[1] Fair value adjustments arising on acquisition principally relate to property, plant and equipment.