Income Taxes - Significant Components of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred income tax assets and liabilities
Statutory rate	21.00%	21.00%	21.00%
Deferred income tax assets
Liabilities for policyholder account balances, future policy benefits and claims	$ 2,397	$ 1,996
Net unrealized losses on Available-for-Sale securities	542	0
Deferred compensation	477	586
Other	198	179
Gross deferred income tax assets	3,614	2,761
Less: valuation allowance	65	32
Total deferred income tax assets	3,549	2,729
Deferred income tax liabilities
Investment related	924	565
Deferred acquisition costs	463	481
Intangible assets	216	209
Goodwill	85	77
Net unrealized gains on Available-for-Sale securities	0	182
Other	160	196
Gross deferred income tax liabilities	1,848	1,710
Net deferred income tax assets	$ 1,701	$ 1,019