Schedule III - Supplementary Insurance Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	$ 2,148	$ 2,250
Future Policy Benefits and Contract Owner Account Balances	46,436	48,734
Unearned Premiums	0	0
Net Investment Income	2,074	2,159	$ 2,281
Premiums and Fee Income	5,289	4,633	4,165
Interest Credited and Other Benefits to Contract Owners	3,619	3,036	2,528
Amortization of DAC and VOBA	223	230	240
Other Operating Expenses	3,082	3,096	2,542
Premiums Written (Excluding Life)	2,462	2,120	1,849
Operating Segments | Wealth Solutions
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	1,044	1,064
Future Policy Benefits and Contract Owner Account Balances	30,090	31,653
Unearned Premiums	0	0
Net Investment Income	1,735	1,807	2,006
Premiums and Fee Income	1,151	1,007	992
Interest Credited and Other Benefits to Contract Owners	834	872	868
Amortization of DAC and VOBA	83	88	93
Other Operating Expenses	1,261	1,242	1,192
Premiums Written (Excluding Life)	0	0	0
Operating Segments | Health Solutions
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	234	211
Future Policy Benefits and Contract Owner Account Balances	2,444	2,268
Unearned Premiums	0	0
Net Investment Income	145	135	134
Premiums and Fee Income	3,225	2,748	2,454
Interest Credited and Other Benefits to Contract Owners	2,602	1,895	1,680
Amortization of DAC and VOBA	36	33	29
Other Operating Expenses	951	903	577
Premiums Written (Excluding Life)	2,462	2,120	1,849
Operating Segments | Investment Management
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	0	0
Future Policy Benefits and Contract Owner Account Balances	0	0
Unearned Premiums	0	0
Net Investment Income	20	26	9
Premiums and Fee Income	953	903	745
Interest Credited and Other Benefits to Contract Owners	0	0	0
Amortization of DAC and VOBA	0	0	0
Other Operating Expenses	865	855	689
Premiums Written (Excluding Life)	0	0	0
Corporate
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
DAC and VOBA	870	975
Future Policy Benefits and Contract Owner Account Balances	13,902	14,813
Unearned Premiums	0	0
Net Investment Income	174	191	132
Premiums and Fee Income	(40)	(25)	(26)
Interest Credited and Other Benefits to Contract Owners	183	269	(20)
Amortization of DAC and VOBA	104	109	118
Other Operating Expenses	5	96	84
Premiums Written (Excluding Life)	$ 0	$ 0	$ 0