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Net Finance Costs - Summary of Net Finance Costs (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Interest income under the effective interest method on:      
Time deposits $ 11 $ 28 $ 43
Cash and cash equivalents 15 14 33
Net change in fair value of financial assets and liabilities 37 0 0
Net foreign exchange gain 2 11 9
Finance income 65 53 85
Financial liabilities measured at amortized cost – interest expense 1,701 1,433 1,053
Impairment loss and change in fair value on investment in associates 0 15 0
Net change in fair value of financial assets and liabilities 0 42 3
Finance costs (1,701) (1,490) (1,056)
Share listing and associated expenses 353 0 0
Net Finance costs $ (1,989) $ (1,437) $ (971)