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OTHER COMMITMENTS AND CONTINGENCIES - Warranty (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Changes in the company's warranty liability    
Balance at January 1 $ 84 $ 81
Accruals for warranties issued during the year 34 34
Accruals related to pre-existing warranties (3) 1
Settlements made (in cash or kind) during the year (33) (31)
Other, net (including currency translation and acquisitions) 1 (1)
Balance at December 31 $ 83 $ 84