Income Tax (Net Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deferred income tax assets:
Net unrealized investment losses	$ 1,048	$ 1,473
Net operating loss carryforwards	1,826	1,246
Investments, including derivatives	210	285
Tax credit carryforwards	189	183
Employee benefits	3	3
Intangibles	48	55
Other	0	28
Total deferred income tax assets	3,324	3,273
Less: Valuation allowance	0	18
Total net deferred income tax assets	3,324	3,255
Deferred income tax liabilities:
Policyholder liabilities and receivables	910	985
DAC	580	597
Other	1	0
Total deferred income tax liabilities	1,491	1,582
Net deferred income tax asset (liability)	$ 1,833	$ 1,673