Income Taxes - Schedule of income tax expense (benefit) attributable to pre-tax income (loss) from continuing operations (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)	$ 311	$ 868	$ 1,943
Deferred federal income tax expense (benefit)	(400)	1,150	146
Current foreign tax expense (benefit)	(5)	10	3
Deferred foreign income tax expense (benefit)	(2)	(16)	(10)
Income tax expense (benefit)	$ (96)	$ 2,012	$ 2,082