Schedule II, Valuation and Qualifying Accounts (Details) - Allowance for Bad Debts - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Jan. 1		$ 54	$ 40	$ 29
Charged to costs and expenses		34	38	26
Charged to other accounts	[1]	5	18	4
Deductions from reserves	[2]	(37)	(42)	(19)
Balance at Dec. 31		$ 56	$ 54	$ 40

[1] Recovery of amounts previously written-off.

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