Schedule II, Valuation and Qualifying Accounts (Details) - Allowance for Bad Debts - 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 Jan. 1		$ 40	$ 29	$ 21
Charged to costs and expenses		38	26	24
Charged to other accounts	[1]	18	4	4
Deductions from reserves	[2]	(42)	(19)	(20)
Balance at Dec. 31		$ 54	$ 40	$ 29

[1] Recovery of amounts previously written-off.

[2] Deductions related primarily to bad debt write-offs