Income Tax (Net Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred income tax assets:
Net unrealized investment losses	$ 1,245	$ 1,048
Net operating loss carryforwards	2,003	1,826
Investments, including derivatives	145	210
Tax credit carryforwards	188	189
Employee benefits	2	3
Intangibles	41	48
Other	4	0
Total deferred income tax assets	3,628	3,324
Less: Valuation allowance	0	0
Total net deferred income tax assets	3,628	3,324
Deferred income tax liabilities:
Policyholder liabilities and receivables	1,224	910
DAC	581	580
Other	0	1
Total deferred income tax liabilities	1,805	1,491
Net deferred income tax asset (liability)	$ 1,823	$ 1,833