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Commitments and Contingencies - Reconciliation of Changes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]    
Product warranty accrual, including held for sale, beginning balance $ 49 $ 48
Provisions 38 26
Change in estimates (7) (2)
Currency/other 3 (1)
Settlements (19) (22)
Product warranty accrual, including held for sale, ending balance $ 64 $ 49