Income Tax (Net Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets and liabilities
Tax Credit Carryforward, Amount	$ 590	$ 825
Deferred income tax assets:
Policyholder liabilities and receivables	1,496	3,787
Net operating loss carryforwards (1)	238	235
Employee benefits	475	583
Capital loss carryforwards	15	9
Tax credit carryforwards (2)	590	825
Net unrealized investment losses	5,319	0
Litigation-related and government mandated	90	95
Other	67	0
Total gross deferred income tax assets	8,290	5,534
Less: Valuation allowance (1)	291	299
Total net deferred income tax assets	7,999	5,235
Deferred income tax liabilities:
Investments, including derivatives	1,691	4,167
Intangibles	1,096	1,188
Net unrealized investment gains	0	5,551
DAC	2,707	3,471
Other	0	362
Total deferred income tax liabilities	5,494	14,739
Deferred Tax Assets, Net, Total	2,505
Deferred Tax Liabilities, Net, Total		(9,504)
Deferred tax assets and liabilities [Abstract]
Deferred income tax liability	325	$ 9,693
General Business Tax Credit Carryforward [Member] | 2039 and 2042
Deferred tax assets and liabilities
Tax Credit Carryforward, Amount	44
Deferred income tax assets:
Tax credit carryforwards (2)	44
Certain State and Foreign Net Operating Loss Carryforwards
Deferred tax assets and liabilities
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 238