Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reserve for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 31	$ 27	$ 36
Provision	2	11	1
Other	(1)	0	(2)
Write-offs/ Disposition	(1)	(7)	(8)
Balance at End of Period	31	31	27
Income Tax Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	148	186	213
Provision	60	15	31
Other	0	(5)	(7)
Write-offs/ Disposition	(24)	(48)	(51)
Balance at End of Period	$ 184	$ 148	$ 186