Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts and estimated returns
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance of valuation allowance and reserves	$ 89	$ 76	$ 82
Charged to Costs and Expenses, additions	35	16	6
Other, additions	0	0	0
Deductions	46	3	12
Ending balance of valuation allowance and reserves	78	89	76
Valuation allowance for deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance of valuation allowance and reserves	96	115	54
Charged to Costs and Expenses, additions	27	31	68
Other, additions	0	0	0
Deductions	3	50	7
Ending balance of valuation allowance and reserves	$ 120	$ 96	$ 115