Income Tax (Net Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets and liabilities
Tax Credit Carryforward, Amount	$ 299	$ 82
Deferred income tax assets:
Policyholder liabilities and receivables	4,233	3,476
Net operating loss carryforwards (1)	247	256
Employee benefits	519	523
Capital loss carryforwards	31	29
Tax credit carryforwards (2)	299	82
Net unrealized investment losses	5,879	4,308
Litigation-related and government mandated	103	101
Other	260	393
Total gross deferred income tax assets	11,571	9,168
Less: Valuation allowance (3)	685	496
Total net deferred income tax assets	10,886	8,672
Deferred income tax liabilities:
Investments, including derivatives	3,469	2,054
Intangibles	836	1,004
DAC	3,719	3,929
Total deferred income tax liabilities	8,024	6,987
Deferred Tax Assets, Net, Total	2,862	1,685
Deferred Tax Assets, Net [Abstract]
Deferred income tax liability	132	$ 927
Certain State and Foreign Net Operating Loss Carryforwards
Deferred tax assets and liabilities
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 247