Income Taxes Income Taxes - Provision for Income Taxes Charged To Income From Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Provision for Income Taxes [Line Items]
Current Income Tax Expense (Benefit)	$ 8	$ 6	$ 12
Deferred Income Taxes and Tax Credits	(2)
Deferred Income Tax Expense (Benefit)	(1)	(4)	6
Income tax expense (benefit)	7	2	18
Deferred Foreign Income Tax Expense (Benefit)	1	(4)	6
Current State and Local Tax Expense (Benefit)	1	0	2
Current Foreign Tax Expense (Benefit)	$ 8	$ 7	$ 10