Income Taxes The Provision of Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Current federal tax	$ 209	$ 148	$ 248
Current international tax	1	0	(1)
Total current tax	210	148	247
Deferred federal tax	216	(355)	483
Deferred international tax	7	0	0
Deferred income tax expense	223	(355)	483
Total provision (benefit) for income taxes	$ 433	$ (207)	$ 730