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SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS 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 $ 12 $ 9 $ 14
Provision/reversals Charged to Costs & Expenses 1 5 (1)
Charged to Other Accounts 0 0 0
Deductions (1) (2) (4)
Balance at End of Period 12 12 9
Deferred tax valuation allowance      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 69 58 51
Provision/reversals Charged to Costs & Expenses 21 11 7
Charged to Other Accounts 0 0 0
Deductions 0 0 0
Balance at End of Period $ 90 $ 69 $ 58