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Assets Classified as Held for Sale, Liabilities Associated With Assets Held for Sale and Discontinued Operations - Summary of Liabilities Associated With Assets Held for Sale (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of Assets and Liabilities of Disposal Groups Classified as Held for Sale [abstract]    
Balance at the end of previous year $ 1,145
Reclassified to liabilities associated with assets held for sale 5 (46)
Disposals (5) (1,044)
Effect of movements in foreign exchange (55)
Balance at the end of year