Income and Other Taxes - Income Tax Expense (Benefit), Current Deferred, by Jurisdiction (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Current federal tax expense (benefit)	$ 21	$ (5)	$ 33
Deferred federal income tax expense (benefit)	(65)	(16)	(61)
Current foreign tax expense	18	23	29
Deferred foreign income tax expense (benefit)	21	(2)	(20)
Current state tax expense	0	6	10
Deferred state income tax (benefit) expense	(24)	(9)	(8)
Income Tax Benefit	$ (29)	$ (3)	$ (17)