Schedule II - Valuation and Qualifying Accounts (Details) - Allowance for doubtful accounts - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Valuation Allowances [Roll Forward]
Balance at beginning of year	$ 26	$ 30	$ 34
Net charges to income	58	14	24
Deductions and other	(36)	(18)	(28)
Balance at end of year	$ 48	$ 26	$ 30