v3.24.2.u1
Fair Value Measurements - Changes in level 3 recurring fair value measurements, liabilities (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Dec. 31, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]                
Fair Value Beginning of Year $ 9,491 $ 7,291 $ 9,491 $ 7,291 $ 9,325 $ 8,904 $ 6,989 $ 6,051
Net Realized and Unrealized (Gains) Losses Included in Income 146 336 261 1,597        
Other Comprehensive (Income) Loss 0 0 0 0        
Purchases, Sales, Issuances and Settlements, Net (123) (34) (20) (500)        
Fair Value End of Period 9,491 7,291 9,491 7,291        
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period 573 (97) 1,165 (927)        
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period 0 0 0 0        
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]                
Gross Transfers Out   0   0        
Market risk benefit liabilities, at fair value 5,124   5,124     5,705    
Recurring Basis                
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]                
Market risk benefit liabilities, at fair value 5,124   5,124     5,705    
Level 3 | Recurring Basis                
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]                
Market risk benefit liabilities, at fair value 5,124 5,000 5,124 5,000   5,705    
Policyholder contract deposits                
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]                
Fair Value Beginning of Year 9,036 6,813 9,036 6,813 8,550 7,942 6,064 5,367
Net Realized and Unrealized (Gains) Losses Included in Income 272 429 724 810        
Other Comprehensive (Income) Loss 0 0 0 0        
Purchases, Sales, Issuances and Settlements, Net 214 320 370 636        
Gross Transfers In 0 0 0 0        
Gross Transfers Out 0 0 0 0        
Other 0 0 0 0        
Fair Value End of Period 9,036 6,813 9,036 6,813        
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period 191 (308) 188 (676)        
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period 0 0 0 0        
Derivative liabilities, net                
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]                
Net Realized and Unrealized (Gains) Losses Included in Income (90) 28 (405) (117)        
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]                
Fair Value Beginning of Period 1,436 (855) (1,220) (584)        
Net Realized and Unrealized (Gains) Losses Included in Income (90) 28 (405) (117)        
Other Comprehensive (Income) Loss 0 0 0 0        
Purchases, Sales, Issuances and Settlements, Net (75) (155) (179) (424)        
Gross Transfers In 0 0 0 0        
Gross Transfers Out 0 0 0 0        
Other 143 0 346 143        
Fair Value End of Period 1,458 982 1,458 982        
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period 111 (2) 511 169        
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period 0 0 0 0        
Interest rate contracts                
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]                
Fair Value Beginning of Period 407 (344) (449) (303)        
Net Realized and Unrealized (Gains) Losses Included in Income (119) 37 (227) 115        
Other Comprehensive (Income) Loss 0 0 0 0        
Purchases, Sales, Issuances and Settlements, Net (27) (21) (80) (140)        
Gross Transfers In 0 0 0 0        
Gross Transfers Out 0 0 0 0        
Other 130 0 333 0        
Fair Value End of Period 423 328 423 328        
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period 112 (23) 310 (52)        
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period 0 0 0 0        
Equity contracts                
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]                
Fair Value Beginning of Period 1,018 (497) (761) (267)        
Net Realized and Unrealized (Gains) Losses Included in Income 45 7 (147) (200)        
Other Comprehensive (Income) Loss 0 0 0 0        
Purchases, Sales, Issuances and Settlements, Net (62) (149) (128) (315)        
Gross Transfers In 0 0 0 0        
Gross Transfers Out 0 0 0 0        
Other 12 0 13 143        
Fair Value End of Period 1,023 639 1,023 639        
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period (16) 5 171 189        
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period 0 0 0 0        
Other contracts                
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]                
Fair Value Beginning of Period 11 (14) (10) (14)        
Net Realized and Unrealized (Gains) Losses Included in Income (16) (16) (31) (32)        
Other Comprehensive (Income) Loss 0 0 0 0        
Purchases, Sales, Issuances and Settlements, Net 14 15 29 31        
Gross Transfers In 0 0 0 0        
Gross Transfers Out 0 0 0 0        
Other 1 0 0 0        
Fair Value End of Period 12 15 12 15        
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period 15 16 30 32        
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period 0 0 0 0        
Fortitude Re funds withheld payable                
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]                
Fair Value Beginning of Year 1,913 1,460 1,913 1,460 $ 2,211 $ 2,182 1,774 1,262
Net Realized and Unrealized (Gains) Losses Included in Income (36) (122) (58) 903        
Other Comprehensive (Income) Loss 0 0 0 0        
Purchases, Sales, Issuances and Settlements, Net (262) (192) (211) (705)        
Gross Transfers In 0 0 0 0        
Gross Transfers Out 0 0 0 0        
Other 0 0 0 0        
Fair Value End of Period 1,913 1,460 1,913 1,460        
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period 271 213 466 (420)        
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period $ 0 0 $ 0 0        
Debt of consolidated investment entities                
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]                
Fair Value Beginning of Year   0   0     $ 6 $ 6
Net Realized and Unrealized (Gains) Losses Included in Income   1   1        
Other Comprehensive (Income) Loss   0   0        
Purchases, Sales, Issuances and Settlements, Net   (7)   (7)        
Gross Transfers In   0   0        
Gross Transfers Out   0   0        
Other   0   0        
Fair Value End of Period   0   0        
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period   0   0        
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period   $ 0   $ 0