v3.23.1
Fair Value Measurements - Assets and liabilities measured at fair value on a recurring basis (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Jan. 01, 2021
Dec. 31, 2020
Assets:        
Bonds available for sale [1] $ 156,793,000,000 $ 198,568,000,000    
Other bond securities [1] 3,769,000,000 2,082,000,000    
Equity securities [1] 170,000,000 242,000,000    
Derivative assets 3,252,000,000 7,267,000,000    
Counterparty netting (2,547,000,000) (5,785,000,000)    
Cash Collateral (406,000,000) (798,000,000)    
Total derivative assets 299,000,000 684,000,000    
Short-term investments [1] 4,400,000,000 5,471,000,000    
Separate account assets 84,853,000,000 109,111,000,000    
Liabilities:        
Policyholder contract deposits 156,058,000,000 151,545,000,000 $ 148,421,000,000 $ 148,421,000,000
Derivative liabilities 3,335,000,000 6,013,000,000    
Counterparty netting (2,547,000,000) (5,785,000,000)    
Cash Collateral (691,000,000) (37,000,000)    
Total derivative liabilities 97,000,000 191,000,000    
Market risk benefit assets, at fair value 796,000,000 610,000,000 338,000,000 $ 338,000,000
Market risk benefit liabilities, at fair value 4,736,000,000 7,499,000,000 $ 8,739,000,000  
Related Parties        
Assets:        
Derivative assets 3,177,000,000 7,182,000,000    
Total derivative assets 12,000,000 256,000,000    
Liabilities:        
Derivative liabilities 3,154,000,000 5,778,000,000    
Total derivative liabilities 0 2,000,000    
Level 3        
Liabilities:        
Policyholder contract deposits 1,078,000,000 1,075,000,000    
Fair Value Measured at Net Asset Value Per Share        
Liabilities:        
Private equity funds/hedge funds 6,000,000,000 5,200,000,000    
U.S. government and government sponsored entities        
Assets:        
Bonds available for sale 1,198,000,000 1,712,000,000    
Obligations of states, municipalities and political subdivisions        
Assets:        
Bonds available for sale 5,926,000,000 8,676,000,000    
Obligations of states, municipalities and political subdivisions | Level 3        
Assets:        
Bonds available for sale 780,000,000 1,364,000,000    
Non-U.S. governments        
Assets:        
Bonds available for sale 4,392,000,000 6,397,000,000    
Corporate debt        
Assets:        
Bonds available for sale 104,692,000,000 140,063,000,000    
Corporate debt | Level 3        
Assets:        
Bonds available for sale 1,988,000,000 1,789,000,000    
RMBS        
Assets:        
Bonds available for sale 11,944,000,000 14,958,000,000    
RMBS | Related Parties        
Assets:        
Bonds available for sale 39,000,000 47,000,000    
RMBS | Level 3        
Assets:        
Bonds available for sale 3,725,000,000 7,141,000,000    
CMBS        
Assets:        
Bonds available for sale 10,068,000,000 11,300,000,000    
CMBS | Level 3        
Assets:        
Bonds available for sale 663,000,000 887,000,000    
CLO        
Assets:        
Bonds available for sale 8,186,000,000 7,402,000,000    
CLO | Related Parties        
Assets:        
Bonds available for sale   862,000,000    
ABS        
Assets:        
Bonds available for sale 10,387,000,000 8,060,000,000    
Recurring Basis        
Assets:        
Bonds available for sale 156,793,000,000 198,568,000,000    
Other bond securities 3,769,000,000 2,082,000,000    
Equity securities 170,000,000 242,000,000    
Other invested assets 1,832,000,000 1,892,000,000    
Counterparty netting (2,547,000,000) (5,785,000,000)    
Cash Collateral (406,000,000) (798,000,000)    
Counterparty netting and cash collateral (2,953,000,000) (6,583,000,000)    
Total derivative assets 299,000,000 684,000,000    
Short-term investments 1,357,000,000 1,455,000,000    
Separate account assets 84,853,000,000 109,111,000,000    
Total 249,869,000,000 314,644,000,000    
Liabilities:        
Policyholder contract deposits 5,464,000,000 5,702,000,000    
Counterparty netting (2,547,000,000) (5,785,000,000)    
Cash Collateral (691,000,000) (37,000,000)    
Counterparty netting and cash collateral (3,238,000,000) (5,822,000,000)    
Total derivative liabilities 97,000,000 191,000,000    
Fortitude Re funds withheld payable 1,262,000,000 7,974,000,000    
Debt of consolidated investment entities 6,000,000 5,000,000    
Total 11,565,000,000 21,371,000,000    
Market risk benefit assets, at fair value 796,000,000 610,000,000    
Market risk benefit liabilities, at fair value 4,736,000,000 7,499,000,000    
Recurring Basis | Debt of consolidated investment entities        
Liabilities:        
Debt of consolidated investment entities 6,000,000      
Recurring Basis | Level 1        
Assets:        
Bonds available for sale 0 7,000,000    
Other bond securities 0 0    
Equity securities 141,000,000 238,000,000    
Other invested assets 0 0    
Derivative assets 12,000,000 7,000,000    
Short-term investments 1,000,000 1,000,000    
Separate account assets 81,655,000,000 105,221,000,000    
Total 81,809,000,000 105,474,000,000    
Liabilities:        
Policyholder contract deposits 0 0    
Derivative liabilities 2,000,000 2,000,000    
Fortitude Re funds withheld payable 0 0    
Debt of consolidated investment entities   0    
Total 2,000,000 2,000,000    
Market risk benefit assets, at fair value 0 0    
Market risk benefit liabilities, at fair value 0 0    
Recurring Basis | Level 1 | Debt of consolidated investment entities        
Liabilities:        
Debt of consolidated investment entities 0      
Recurring Basis | Level 2        
Assets:        
Bonds available for sale 136,367,000,000 176,154,000,000    
Other bond securities 2,465,000,000 1,455,000,000    
Equity securities 3,000,000 2,000,000    
Other invested assets 0 0    
Derivative assets 2,641,000,000 6,768,000,000    
Short-term investments 1,356,000,000 1,454,000,000    
Separate account assets 3,198,000,000 3,890,000,000    
Total 146,030,000,000 189,723,000,000    
Liabilities:        
Policyholder contract deposits 97,000,000 130,000,000    
Derivative liabilities 3,318,000,000 5,989,000,000    
Fortitude Re funds withheld payable 0 0    
Debt of consolidated investment entities   0    
Total 3,415,000,000 6,119,000,000    
Market risk benefit assets, at fair value 0 0    
Market risk benefit liabilities, at fair value 0 0    
Recurring Basis | Level 2 | Debt of consolidated investment entities        
Liabilities:        
Debt of consolidated investment entities 0      
Recurring Basis | Level 3        
Assets:        
Bonds available for sale 20,426,000,000 22,407,000,000    
Other bond securities 1,304,000,000 627,000,000    
Equity securities 26,000,000 2,000,000    
Other invested assets 1,832,000,000 1,892,000,000    
Derivative assets 599,000,000 492,000,000    
Short-term investments 0 0    
Separate account assets 0 0    
Total 24,983,000,000 26,030,000,000    
Liabilities:        
Policyholder contract deposits 5,367,000,000 5,572,000,000    
Derivative liabilities 15,000,000 22,000,000    
Fortitude Re funds withheld payable 1,262,000,000 7,974,000,000    
Debt of consolidated investment entities   5,000,000    
Total 11,386,000,000 21,072,000,000    
Market risk benefit assets, at fair value 796,000,000 610,000,000    
Market risk benefit liabilities, at fair value 4,736,000,000 7,499,000,000    
Recurring Basis | Level 3 | Debt of consolidated investment entities        
Liabilities:        
Debt of consolidated investment entities 6,000,000      
Recurring Basis | Interest rate contracts        
Assets:        
Derivative assets 1,573,000,000 1,911,000,000    
Liabilities:        
Derivative liabilities 2,676,000,000 1,576,000,000    
Recurring Basis | Interest rate contracts | Level 1        
Assets:        
Derivative assets 1,000,000 0    
Liabilities:        
Derivative liabilities 0 1,000,000    
Recurring Basis | Interest rate contracts | Level 2        
Assets:        
Derivative assets 1,269,000,000 1,911,000,000    
Liabilities:        
Derivative liabilities 2,676,000,000 1,575,000,000    
Recurring Basis | Interest rate contracts | Level 3        
Assets:        
Derivative assets 303,000,000 0    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | Foreign exchange contracts        
Assets:        
Derivative assets 1,247,000,000 672,000,000    
Liabilities:        
Derivative liabilities 632,000,000 366,000,000    
Recurring Basis | Foreign exchange contracts | Level 1        
Assets:        
Derivative assets 0 0    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | Foreign exchange contracts | Level 2        
Assets:        
Derivative assets 1,247,000,000 672,000,000    
Liabilities:        
Derivative liabilities 632,000,000 366,000,000    
Recurring Basis | Foreign exchange contracts | Level 3        
Assets:        
Derivative assets 0 0    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | Equity contracts        
Assets:        
Derivative assets 417,000,000 4,670,000,000    
Liabilities:        
Derivative liabilities 27,000,000 4,071,000,000    
Recurring Basis | Equity contracts | Level 1        
Assets:        
Derivative assets 11,000,000 7,000,000    
Liabilities:        
Derivative liabilities 2,000,000 1,000,000    
Recurring Basis | Equity contracts | Level 2        
Assets:        
Derivative assets 124,000,000 4,184,000,000    
Liabilities:        
Derivative liabilities 10,000,000 4,048,000,000    
Recurring Basis | Equity contracts | Level 3        
Assets:        
Derivative assets 282,000,000 479,000,000    
Liabilities:        
Derivative liabilities 15,000,000 22,000,000    
Recurring Basis | Credit contracts        
Assets:        
Derivative assets 0 1,000,000    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | Credit contracts | Level 1        
Assets:        
Derivative assets 0 0    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | Credit contracts | Level 2        
Assets:        
Derivative assets 0 0    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | Credit contracts | Level 3        
Assets:        
Derivative assets 0 1,000,000    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | Other contracts        
Assets:        
Derivative assets 15,000,000 13,000,000    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | Other contracts | Level 1        
Assets:        
Derivative assets 0 0    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | Other contracts | Level 2        
Assets:        
Derivative assets 1,000,000 1,000,000    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | Other contracts | Level 3        
Assets:        
Derivative assets 14,000,000 12,000,000    
Liabilities:        
Derivative liabilities 0 0    
Recurring Basis | U.S. government and government sponsored entities        
Assets:        
Bonds available for sale 1,198,000,000 1,712,000,000    
Recurring Basis | U.S. government and government sponsored entities | Level 1        
Assets:        
Bonds available for sale 0 0    
Recurring Basis | U.S. government and government sponsored entities | Level 2        
Assets:        
Bonds available for sale 1,198,000,000 1,712,000,000    
Recurring Basis | U.S. government and government sponsored entities | Level 3        
Assets:        
Bonds available for sale 0 0    
Recurring Basis | Obligations of states, municipalities and political subdivisions        
Assets:        
Bonds available for sale 5,926,000,000 8,676,000,000    
Other bond securities 37,000,000 50,000,000    
Recurring Basis | Obligations of states, municipalities and political subdivisions | Level 1        
Assets:        
Bonds available for sale 0 0    
Other bond securities 0 0    
Recurring Basis | Obligations of states, municipalities and political subdivisions | Level 2        
Assets:        
Bonds available for sale 5,121,000,000 7,281,000,000    
Other bond securities 37,000,000 50,000,000    
Recurring Basis | Obligations of states, municipalities and political subdivisions | Level 3        
Assets:        
Bonds available for sale 805,000,000 1,395,000,000    
Other bond securities 0 0    
Recurring Basis | Non-U.S. governments        
Assets:        
Bonds available for sale 4,392,000,000 6,397,000,000    
Other bond securities 22,000,000 17,000,000    
Recurring Basis | Non-U.S. governments | Level 1        
Assets:        
Bonds available for sale 0 7,000,000    
Other bond securities 0 0    
Recurring Basis | Non-U.S. governments | Level 2        
Assets:        
Bonds available for sale 4,392,000,000 6,390,000,000    
Other bond securities 22,000,000 17,000,000    
Recurring Basis | Non-U.S. governments | Level 3        
Assets:        
Bonds available for sale 0 0    
Other bond securities 0 0    
Recurring Basis | Corporate debt        
Assets:        
Bonds available for sale 104,692,000,000 140,063,000,000    
Other bond securities 2,222,000,000 1,000,000,000    
Recurring Basis | Corporate debt | Level 1        
Assets:        
Bonds available for sale 0 0    
Other bond securities 0 0    
Recurring Basis | Corporate debt | Level 2        
Assets:        
Bonds available for sale 102,724,000,000 138,156,000,000    
Other bond securities 1,805,000,000 866,000,000    
Recurring Basis | Corporate debt | Level 3        
Assets:        
Bonds available for sale 1,968,000,000 1,907,000,000    
Other bond securities 417,000,000 134,000,000    
Recurring Basis | RMBS        
Assets:        
Bonds available for sale 11,944,000,000 14,958,000,000    
Other bond securities 165,000,000 199,000,000    
Recurring Basis | RMBS | Level 1        
Assets:        
Bonds available for sale 0 0    
Other bond securities 0 0    
Recurring Basis | RMBS | Level 2        
Assets:        
Bonds available for sale 6,274,000,000 7,363,000,000    
Other bond securities 58,000,000 93,000,000    
Recurring Basis | RMBS | Level 2 | Related Parties        
Assets:        
Bonds available for sale 37,000,000 38,000,000    
Recurring Basis | RMBS | Level 2 | Related Parties | Maximum        
Assets:        
Other bond securities 1,000,000 1,000,000    
Recurring Basis | RMBS | Level 3        
Assets:        
Bonds available for sale 5,670,000,000 7,595,000,000    
Other bond securities 107,000,000 106,000,000    
Recurring Basis | RMBS | Level 3 | Related Parties        
Assets:        
Bonds available for sale 2,000,000 9,000,000    
Recurring Basis | CMBS        
Assets:        
Bonds available for sale 10,068,000,000 11,300,000,000    
Other bond securities 232,000,000 234,000,000    
Recurring Basis | CMBS | Level 1        
Assets:        
Bonds available for sale 0 0    
Other bond securities 0 0    
Recurring Basis | CMBS | Level 2        
Assets:        
Bonds available for sale 9,350,000,000 10,228,000,000    
Other bond securities 204,000,000 201,000,000    
Recurring Basis | CMBS | Level 3        
Assets:        
Bonds available for sale 718,000,000 1,072,000,000    
Other bond securities 28,000,000 33,000,000    
Recurring Basis | CLO        
Assets:        
Bonds available for sale 8,186,000,000 7,402,000,000    
Other bond securities 279,000,000 283,000,000    
Recurring Basis | CLO | Level 1        
Assets:        
Bonds available for sale 0 0    
Other bond securities 0 0    
Recurring Basis | CLO | Level 2        
Assets:        
Bonds available for sale 6,516,000,000 4,364,000,000    
Other bond securities 268,000,000 134,000,000    
Recurring Basis | CLO | Level 3        
Assets:        
Bonds available for sale 1,670,000,000 3,038,000,000    
Other bond securities 11,000,000 149,000,000    
Recurring Basis | CLO | Level 3 | Related Parties        
Assets:        
Bonds available for sale 0 862,000,000    
Recurring Basis | ABS        
Assets:        
Bonds available for sale 10,387,000,000 8,060,000,000    
Other bond securities 812,000,000 299,000,000    
Recurring Basis | ABS | Level 1        
Assets:        
Bonds available for sale 0 0    
Other bond securities 0 0    
Recurring Basis | ABS | Level 2        
Assets:        
Bonds available for sale 792,000,000 660,000,000    
Other bond securities 71,000,000 94,000,000    
Recurring Basis | ABS | Level 3        
Assets:        
Bonds available for sale 9,595,000,000 7,400,000,000    
Other bond securities $ 741,000,000 $ 205,000,000    
[1] See Note 9 for details of balances associated with variable interest entities