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Commitments and Contingencies - Reconciliation of Changes (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]    
Product warranty accrual, beginning balance $ 64 $ 49
Provisions 12 16
Changes in estimates 1 (2)
Currency/other (3) 1
Settlements (16) (14)
Product warranty accrual, ending balance $ 58 $ 50