Federal Income Taxes (Federal Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income tax expense (benefit), continuing operations [Abstract]
Current	$ 20	$ (59)	$ 175
Deferred	273	3	(212)
Federal income tax expense (benefit)	$ 293	$ (56)	$ (37)