Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%	21.00%	21.00%	35.00%
Effective tax rate	23.80%	(191.20%)	(37.20%)
Percent of income tax expense (benefit)	5.00%
Income (loss) from domestic operations	$ (2,902)	$ 68	$ 159
DRD constituting non-taxable investment income	46	45	50
Non-taxable investment income	$ 49	47	$ 52
Net Operating Loss Carryback		$ 70