Annual report pursuant to Section 13 and 15(d)

Schedule II - Schedule of Valuation and Qualifying Accounts (Details)

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Schedule II - Schedule of 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, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance January 1, $ 15 $ 14 $ 7
Charged to Expenses 53 60 53
Write-offs/ Payments/ Other (58) (59) (46)
Balance December 31, 10 15 14
Deferred tax assets—valuation allowance      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance January 1, 54 70 66
Charged to Expenses 29 3 4
Write-offs/ Payments/ Other 0 (19) 0
Balance December 31, $ 83 $ 54 $ 70