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Valuation and Qualifying Accounts (Details) - Allowance for Doubtful Accounts - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of year $ 35 $ 38 $ 25
Additions charged to expense 5 2 25
Deductions/other (6) (5) (12)
Balance at end of year $ 34 $ 35 $ 38