Valuation and Qualifying Accounts (Details) - Allowance for credit losses - 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 Beginning of Period	$ 61	$ 70	$ 75
Charged to Earnings	29	28	22
Used	(21)	(36)	(26)
Adjustments	0	(1)	(1)
Balance at End of Period	$ 69	$ 61	$ 70