Schedule II - Valuation and Qualifying Accounts - Summary of Valuation Allowance (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Beginning balance		$ 16	$ 16	$ 10
Charged to costs and expenses		21	1	4
Charged to other accounts		0	0	3
Deductions	[1]	(20)	(1)	(1)
Ending balance		17	16	16
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
Beginning balance		10	22	15
Charged to costs and expenses		0	0	7
Charged to other accounts		(1)	(12)	0
Deductions				0
Ending balance		$ 9	$ 10	$ 22

[1] Deductions from allowance for doubtful accounts represent write-offs of receivable balances not considered collectible. The deduction from the valuation allowance for deferred tax assets represents changes in estimates of our future taxable income and our estimated future usage of certain net operating loss carryforwards, as well as expiration of certain net operating loss carryforwards.