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SIGNIFICANT ACCOUNTING POLICIES - Schedule of Warranties (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]      
Warranty Expense $ 29 $ 36 $ 24
Warranty Accrual $ 18 $ 18 $ 13