Other Contract Holder Funds - Weighted Average Crediting Rate, Net Amount at Risk and Cash Surrender Value (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Payout Annuity
Policyholder Account Balance [Line Items]
Weighted-average crediting rate	2.83%	2.39%
Net amount at risk	$ 0	$ 0
Cash surrender value	$ 0	$ 0
Variable Annuity
Policyholder Account Balance [Line Items]
Weighted-average crediting rate	2.94%	1.64%
Net amount at risk	$ 0	$ 0
Cash surrender value	$ 9,792	$ 10,101
Fixed Annuity
Policyholder Account Balance [Line Items]
Weighted-average crediting rate	3.28%	3.33%
Net amount at risk	$ 0	$ 0
Cash surrender value	$ 10,981	$ 11,573
Fixed Indexed Annuities
Policyholder Account Balance [Line Items]
Weighted-average crediting rate	1.90%	2.02%
Net amount at risk	$ 0	$ 0
Cash surrender value	$ 10,979	$ 11,409
RILA
Policyholder Account Balance [Line Items]
Weighted-average crediting rate	0.32%	0.11%
Net amount at risk	$ 0	$ 0
Cash surrender value	$ 2,314	$ 1,728
Closed Block Life
Policyholder Account Balance [Line Items]
Weighted-average crediting rate	5.76%	5.88%
Net amount at risk	$ 17,154	$ 17,427
Cash surrender value	$ 11,098	$ 7,096
Closed Block Annuity
Policyholder Account Balance [Line Items]
Weighted-average crediting rate	3.34%	3.64%
Net amount at risk	$ 0	$ 0
Cash surrender value	$ 1,316	$ 1,319