Income Tax (Net Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets and liabilities
Tax Credit Carryforward, Amount	$ 825	$ 922
Deferred income tax assets:
Policyholder liabilities and receivables	3,787	3,890
Net operating loss carryforwards (1)	235	301
Employee benefits	583	673
Capital loss carryforwards	9	9
Tax credit carryforwards (2)	825	922
Litigation-related and government mandated	95	126
Total gross deferred income tax assets	5,534	5,921
Less: Valuation allowance (1)	299	309
Total net deferred income tax assets	5,235	5,612
Deferred income tax liabilities:
Investments, including derivatives	4,167	4,421
Intangibles	1,188	1,387
Net unrealized investment gains	5,551	7,422
DAC	3,471	3,162
Other	362	134
Total deferred income tax liabilities	14,739	16,526
Net deferred income tax asset (liability) (3)	(9,504)	(10,914)
Deferred tax assets and liabilities [Abstract]
Deferred income tax liability	9,693	11,008
General Business Tax Credit Carryforward [Member] | 2038and2041
Deferred tax assets and liabilities
Tax Credit Carryforward, Amount	44
Deferred income tax assets:
Tax credit carryforwards (2)	44
Other Assets
Deferred tax assets and liabilities
Deferred Tax Assets, Net	189	$ 94
Certain State and Foreign Net Operating Loss Carryforwards
Deferred tax assets and liabilities
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 235