Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%	21.00%	21.00%
Effective tax rate	20.70%	21.50%	22.70%
Income (loss) from domestic operations	$ 6,259	$ (4,035)	$ (1,280)
Income Taxes, Reconciling Items, Percent Of Income Tax Expense (Benefit)	5.00%
Non-taxable investment income	$ 12	11	12
DRD constituting non-taxable investment income	$ 11	$ 10	$ 11