Fair Value Measurements - Schedule of Assets and Liabilities Carried at Fair Value by Hierarchy Levels (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Assets
Debt securities	$ 51,948	$ 50,791
Equity securities	243	172
Mortgage loans	196	324
Limited partnerships	276	250
Policy loans	3,556	3,537
Freestanding derivative instruments	701	448
Cash and cash equivalents	5,539	5,704
Reinsurance recoverable on market risk benefits	121	118
Market risk benefit assets	6,701	7,867
Separate account assets	223,452	236,496
Total	292,733	305,707
Liabilities
Embedded derivative liabilities	6,317	6,906
Funds withheld payable under reinsurance treaties	1,979	1,971
Market risk benefit liabilities	3,971	3,754
Total	15,048	15,466
Limited partnership investments measured at NAV	2,620	2,586
Freestanding derivatives
Liabilities
Freestanding derivative instruments	238	257
Related Party
Liabilities
Notes issued by consolidated VIEs	2,543	2,578
Level 1
Assets
Equity securities	102	10
Mortgage loans	0	0
Limited partnerships	0	0
Policy loans	0	0
Freestanding derivative instruments	0	0
Cash and cash equivalents	5,539	5,704
Reinsurance recoverable on market risk benefits	0	0
Market risk benefit assets	0	0
Separate account assets	0	0
Total	8,766	8,719
Liabilities
Embedded derivative liabilities	0	0
Funds withheld payable under reinsurance treaties	0	0
Market risk benefit liabilities	0	0
Total	0	0
Level 1 \| Freestanding derivatives
Liabilities
Freestanding derivative instruments	0	0
Level 1 \| Related Party
Liabilities
Notes issued by consolidated VIEs	0	0
Level 2
Assets
Equity securities	132	155
Mortgage loans	0	0
Limited partnerships	0	0
Policy loans	0	0
Freestanding derivative instruments	701	448
Cash and cash equivalents	0	0
Reinsurance recoverable on market risk benefits	0	0
Market risk benefit assets	0	0
Separate account assets	223,452	236,496
Total	272,685	284,113
Liabilities
Embedded derivative liabilities	6,317	6,906
Funds withheld payable under reinsurance treaties	0	0
Market risk benefit liabilities	0	0
Total	9,098	9,741
Level 2 \| Freestanding derivatives
Liabilities
Freestanding derivative instruments	238	257
Level 2 \| Related Party
Liabilities
Notes issued by consolidated VIEs	2,543	2,578
Level 3
Assets
Equity securities	9	7
Mortgage loans	196	324
Limited partnerships	276	250
Policy loans	3,556	3,537
Freestanding derivative instruments	0	0
Cash and cash equivalents	0	0
Reinsurance recoverable on market risk benefits	121	118
Market risk benefit assets	6,701	7,867
Separate account assets	0	0
Total	11,282	12,875
Liabilities
Embedded derivative liabilities	0	0
Funds withheld payable under reinsurance treaties	1,979	1,971
Market risk benefit liabilities	3,971	3,754
Total	5,950	5,725
Level 3 \| RILA embedded derivatives
Liabilities
Embedded derivative liabilities	5,499	6,043
Level 3 \| Fixed index annuity embedded derivatives
Liabilities
Embedded derivative liabilities	818	863
Level 3 \| Freestanding derivatives
Liabilities
Freestanding derivative instruments	0	0
Level 3 \| Related Party
Liabilities
Notes issued by consolidated VIEs	0	0
U.S. government securities
Assets
Debt securities	3,125	3,005
U.S. government securities \| Level 1
Assets
Debt securities	3,125	3,005
U.S. government securities \| Level 2
Assets
Debt securities	0	0
U.S. government securities \| Level 3
Assets
Debt securities	0	0
Other government securities
Assets
Debt securities	1,055	1,065
Other government securities \| Level 1
Assets
Debt securities	0	0
Other government securities \| Level 2
Assets
Debt securities	1,055	1,065
Other government securities \| Level 3
Assets
Debt securities	0	0
Public utilities
Assets
Debt securities	6,212	6,146
Public utilities \| Level 1
Assets
Debt securities	0	0
Public utilities \| Level 2
Assets
Debt securities	6,212	6,146
Public utilities \| Level 3
Assets
Debt securities	0	0
Corporate securities
Assets
Debt securities	33,108	32,916
Corporate securities \| Level 1
Assets
Debt securities	0	0
Corporate securities \| Level 2
Assets
Debt securities	32,963	32,570
Corporate securities \| Level 3
Assets
Debt securities	145	346
Residential mortgage-backed
Assets
Debt securities	467	442
Residential mortgage-backed \| Level 1
Assets
Debt securities	0	0
Residential mortgage-backed \| Level 2
Assets
Debt securities	467	442
Residential mortgage-backed \| Level 3
Assets
Debt securities	0	0
Commercial mortgage-backed
Assets
Debt securities	1,954	1,829
Commercial mortgage-backed \| Level 1
Assets
Debt securities	0	0
Commercial mortgage-backed \| Level 2
Assets
Debt securities	1,954	1,829
Commercial mortgage-backed \| Level 3
Assets
Debt securities	0	0
Other asset-backed securities
Assets
Debt securities	6,027	5,388
Other asset-backed securities \| Level 1
Assets
Debt securities	0	0
Other asset-backed securities \| Level 2
Assets
Debt securities	5,749	4,962
Other asset-backed securities \| Level 3
Assets
Debt securities	278	426
Derivatives related to funds withheld under reinsurance treaties
Assets
Freestanding derivative instruments	1,784	1,770
Liabilities
Freestanding derivative instruments	12	22
Derivatives related to funds withheld under reinsurance treaties \| Funds withheld embedded derivative
Assets
Freestanding derivative instruments	1,765	1,752
Liabilities
Freestanding derivative instruments	$ 0	$ 0

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