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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Allowance for doubtful accounts      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period $ 28 $ 32 $ 37
Charged to expense 8 4 3
Charged/ (credited) to other accounts 0 (1) (1)
Deductions from reserves (5) (7) (7)
Balance at end of period 31 28 32
Valuation allowance-taxes      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 46 64 42
Charged to expense 12 0 22
Charged/ (credited) to other accounts 0 0 0
Deductions from reserves 0 (18) 0
Balance at end of period $ 58 $ 46 $ 64