Closed Block (Liabilities and Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021	Dec. 31, 2020
Closed Block Liabilities
Future policy benefits	$ 37,593	$ 38,046
Other policy-related balances	274	290
Policyholder dividends payable	250	253
Policyholder dividend obligation	0	1,682	$ 2,969
Deferred income tax liability	0	210
Other liabilities	368	263
Total closed block liabilities	38,485	40,744
Assets Designated to the Closed Block
Fixed maturity securities available-for-sale, at estimated fair value	21,257	25,669
Equity securities, at estimated fair value	14	21
Mortgage loans	6,624	6,417
Policy loans	4,120	4,191
Real estate and real estate joint ventures	583	565
Other invested assets	712	535
Total investments	33,310	37,398
Cash and cash equivalents	201	126
Accrued investment income	379	384
Premiums, reinsurance and other receivables	43	50
Current income tax recoverable	91	81
Deferred income tax asset	196	0
Total assets designated to the closed block	34,220	38,039
Excess of closed block liabilities over assets designated to the closed block	4,265	2,705
AOCI:
Unrealized investment gains (losses), net of income tax	(460)	2,562
Unrealized gains (losses) on derivatives, net of income tax	257	107
Allocated to policyholder dividend obligation, net of income tax	0	(1,329)
Total amounts included in AOCI	(203)	1,340
Maximum future earnings to be recognized from closed block assets and liabilities	$ 4,062	$ 4,045