Closed Block (Liabilities and Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Closed Block Liabilities
Future policy benefits	$ 36,650	$ 37,222
Other policy-related balances	281	273
Policyholder dividends payable	178	181
Current income tax payable	9	0
Other liabilities	592	455
Total closed block liabilities	37,710	38,131
Assets Designated to the Closed Block
Fixed maturity securities available-for-sale, at estimated fair value	19,697	19,648
Equity securities, at estimated fair value	13	13
Mortgage loans	6,269	6,564
Policy loans	4,014	4,084
Real estate and real estate joint ventures	655	635
Other invested assets	591	692
Total investments	31,239	31,636
Cash and cash equivalents	656	437
Accrued investment income	369	375
Premiums, reinsurance and other receivables	114	52
Current income tax recoverable	0	88
Deferred income tax asset	394	423
Total assets designated to the closed block	32,772	33,011
Excess of closed block liabilities over assets designated to the closed block	4,938	5,120
AOCI:
Unrealized investment gains (losses), net of income tax	(1,176)	(1,357)
Unrealized gains (losses) on derivatives, net of income tax	212	262
Total amounts included in AOCI	(964)	(1,095)
Maximum future earnings to be recognized from closed block assets and liabilities	$ 3,974	$ 4,025