Consolidated Reinsurance (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Gross Amount	$ 463,582	$ 475,382	$ 494,317
Ceded	129,016	138,063	145,618
Assumed	7,479	8,034	8,966
Net Amount	$ 342,045	$ 345,353	$ 357,665
% Amount Assumed to Net	2.20%	2.30%	2.50%
Consolidated Reinsurance
Direct premiums	$ 1,458	$ 1,321	$ 1,398
Ceded	667	688	701
Assumed	20	8	(10)
Net Amount	$ 811	$ 641	$ 687
% Amount Assumed to Net	2.50%	1.20%	(1.50%)
Affiliated Entity
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Assumed	$ 1,400	$ 1,500	$ 1,600
Life
Consolidated Reinsurance
Direct premiums	1,257	1,123	1,193
Ceded	475	493	500
Assumed	20	8	(10)
Net Amount	$ 802	$ 638	$ 683
% Amount Assumed to Net	2.50%	1.30%	(1.50%)
Life | Affiliated Entity
Consolidated Reinsurance
Assumed	$ 6	$ 2	$ 2
Other products
Consolidated Reinsurance
Direct premiums	201	198	205
Ceded	192	195	201
Assumed	0	0	0
Net Amount	$ 9	$ 3	$ 4
% Amount Assumed to Net	0.00%	0.00%	0.00%