Income Taxes (Reconciliation between the Company's federal income tax (expense) benefit at statutory rates and the recorded income tax (expense) benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income tax expense at statutory rates	$ (254)	$ (319)	$ (172)
Tax benefit from tax exempt income	25	30	41
Foreign taxes and credits	(3)	(5)	15
State income tax expense	(12)	(13)	(10)
Other tax expense	(8)	(6)	(6)
Income tax expense	$ (252)	$ (313)	$ (132)