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Warranty - Schedule of Company's Warranty Accruals (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Movement in Standard Product Warranty Accrual [Roll Forward]    
Balance, beginning of year $ 252 $ 208
Expense, net 164 142
Settlements (165) (105)
Business combination [note 5] 21 0
Foreign exchange and other 12 7
Balance, end of year $ 284 $ 252