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	$ 12	$ (61)	$ 181
Deferred	221	(15)	(148)
Federal income tax expense (benefit)	$ 233	$ (76)	$ 33