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SEC Schedule, Article 12-09, Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Allowance for doubtful accounts      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Valuation Allowances and Reserves, Beginning Balance $ 13 $ 11 $ 9
Charged to Costs and Expenses 2 9 5
Charged to Other Accounts 0 0 0
Deductions [1] (4) (7) (3)
Valuation Allowances and Reserves, Ending Balance 11 13 11
Deferred tax asset valuation allowance      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Valuation Allowances and Reserves, Beginning Balance 21 17 18
Charged to Costs and Expenses (1) 4 (1)
Charged to Other Accounts 0 0 0
Deductions 0 0 0
Valuation Allowances and Reserves, Ending Balance $ 20 $ 21 $ 17
[1] The deduction column represents uncollectible accounts written off, net of recoveries from Trade Receivables, in the Consolidated Balance Sheets.