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Fair Value Measurement - Financial Instruments Carried at Fair Value (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | $ 6,307 | $ 7,119
Fixed-maturity securities, trading, at fair value | 318 | 303
Short-term investments, at fair value | 1,661 | 810
Other invested assets | 829 | 133
FG VIEs’ assets | 174 | 413
Other assets | 123 | 148
Liabilities: |  |
Credit derivative liabilities | 53 | 163
Liabilities of CIVs | 554 | 715
Obligations of state and political subdivisions |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 2,661 | 3,394
U.S. government and agencies |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 60 | 111
Corporate securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 2,141 | 2,084
RMBS |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 342 | 340
CMBS |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 151 | 271
Non-U.S. government securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 100 | 98
Recurring |  |
Assets: |  |
Short-term investments, at fair value | 1,661 |
Other invested assets | 3 | 7
Other assets | 123 | 148
Total assets carried at fair value | 8,917 | 14,031
Liabilities: |  |
Credit derivative liabilities | 53 | 163
Liabilities of CIVs |  | 715
Other liabilities |  | 7
Total liabilities carried at fair value | 607 | 5,316
Recurring | Financial Guaranty Variable Interest Entities |  |
Liabilities: |  |
Liabilities of CIVs | 554 |
Recurring | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 4,431
Recurring | Financial Guaranty Variable Interest Entities |  |
Assets: |  |
FG VIEs’ assets | 174 | 413
Recurring | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 331 | 5,231
Recurring | CLO obligations, FVO | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 4,090
Recurring | Warehouse financing debt | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 313
Recurring | Borrowings | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 28
Recurring | Level 1 |  |
Assets: |  |
Short-term investments, at fair value | 1,657 |
Other invested assets | 0 | 2
Other assets | 55 | 54
Total assets carried at fair value | 1,712 | 962
Liabilities: |  |
Credit derivative liabilities | 0 | 0
Liabilities of CIVs |  | 0
Other liabilities |  | 0
Total liabilities carried at fair value | 0 | 0
Recurring | Level 1 | Financial Guaranty Variable Interest Entities |  |
Liabilities: |  |
Liabilities of CIVs | 0 |
Recurring | Level 1 | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 0
Recurring | Level 1 | Financial Guaranty Variable Interest Entities |  |
Assets: |  |
FG VIEs’ assets | 0 | 0
Recurring | Level 1 | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 0 | 135
Recurring | Level 1 | CLO obligations, FVO | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 0
Recurring | Level 1 | Warehouse financing debt | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 0
Recurring | Level 1 | Borrowings | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 0
Recurring | Level 2 |  |
Assets: |  |
Short-term investments, at fair value | 4 |
Other invested assets | 0 | 0
Other assets | 52 | 46
Total assets carried at fair value | 5,780 | 11,353
Liabilities: |  |
Credit derivative liabilities | 0 | 0
Liabilities of CIVs |  | 0
Other liabilities |  | 7
Total liabilities carried at fair value | 0 | 284
Recurring | Level 2 | Financial Guaranty Variable Interest Entities |  |
Liabilities: |  |
Liabilities of CIVs | 0 |
Recurring | Level 2 | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 277
Recurring | Level 2 | Financial Guaranty Variable Interest Entities |  |
Assets: |  |
FG VIEs’ assets | 0 | 209
Recurring | Level 2 | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 62 | 4,657
Recurring | Level 2 | CLO obligations, FVO | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 0
Recurring | Level 2 | Warehouse financing debt | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 277
Recurring | Level 2 | Borrowings | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 0
Recurring | Level 3 |  |
Assets: |  |
Short-term investments, at fair value | 0 |
Other invested assets | 3 | 5
Other assets | 16 | 48
Total assets carried at fair value | 1,425 | 1,716
Liabilities: |  |
Credit derivative liabilities | 53 | 163
Liabilities of CIVs |  | 715
Other liabilities |  | 0
Total liabilities carried at fair value | 607 | 5,032
Recurring | Level 3 | Financial Guaranty Variable Interest Entities |  |
Liabilities: |  |
Liabilities of CIVs | 554 |
Recurring | Level 3 | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 4,154
Recurring | Level 3 | Financial Guaranty Variable Interest Entities |  |
Assets: |  |
FG VIEs’ assets | 174 | 204
Recurring | Level 3 | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 269 | 439
Recurring | Level 3 | CLO obligations, FVO | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 4,090
Recurring | Level 3 | Warehouse financing debt | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 36
Recurring | Level 3 | Borrowings | Consolidated Investment Vehicles |  |
Liabilities: |  |
Liabilities of CIVs |  | 28
Fixed-maturity securities | Recurring |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 6,307 | 7,119
Fixed-maturity securities, trading, at fair value | 318 | 303
Fixed-maturity securities | Recurring | Obligations of state and political subdivisions |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 2,661 | 3,394
Fixed-maturity securities | Recurring | U.S. government and agencies |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 60 | 111
Fixed-maturity securities | Recurring | Corporate securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 2,141 | 2,084
Fixed-maturity securities | Recurring | RMBS |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 342 | 340
Fixed-maturity securities | Recurring | CMBS |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 151 | 271
Fixed-maturity securities | Recurring | Asset-backed securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 852 | 821
Fixed-maturity securities | Recurring | Non-U.S. government securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 100 | 98
Fixed-maturity securities | Recurring | Level 1 |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities, trading, at fair value | 0 | 0
Fixed-maturity securities | Recurring | Level 1 | Obligations of state and political subdivisions |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities | Recurring | Level 1 | U.S. government and agencies |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities | Recurring | Level 1 | Corporate securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities | Recurring | Level 1 | RMBS |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities | Recurring | Level 1 | CMBS |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities | Recurring | Level 1 | Asset-backed securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities | Recurring | Level 1 | Non-U.S. government securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities | Recurring | Level 2 |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 5,344 | 6,099
Fixed-maturity securities, trading, at fair value | 318 | 303
Fixed-maturity securities | Recurring | Level 2 | Obligations of state and political subdivisions |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 2,655 | 3,347
Fixed-maturity securities | Recurring | Level 2 | U.S. government and agencies |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 60 | 111
Fixed-maturity securities | Recurring | Level 2 | Corporate securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 2,141 | 2,084
Fixed-maturity securities | Recurring | Level 2 | RMBS |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 188 | 161
Fixed-maturity securities | Recurring | Level 2 | CMBS |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 151 | 271
Fixed-maturity securities | Recurring | Level 2 | Asset-backed securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 49 | 27
Fixed-maturity securities | Recurring | Level 2 | Non-U.S. government securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 100 | 98
Fixed-maturity securities | Recurring | Level 3 |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 963 | 1,020
Fixed-maturity securities, trading, at fair value | 0 | 0
Fixed-maturity securities | Recurring | Level 3 | Obligations of state and political subdivisions |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 6 | 47
Fixed-maturity securities | Recurring | Level 3 | U.S. government and agencies |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities | Recurring | Level 3 | Corporate securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities | Recurring | Level 3 | RMBS |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 154 | 179
Fixed-maturity securities | Recurring | Level 3 | CMBS |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Fixed-maturity securities | Recurring | Level 3 | Asset-backed securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 803 | 794
Fixed-maturity securities | Recurring | Level 3 | Non-U.S. government securities |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss | 0 | 0
Short-term investments | Recurring |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss |  | 810
Short-term investments | Recurring | Level 1 |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss |  | 771
Short-term investments | Recurring | Level 2 |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss |  | 39
Short-term investments | Recurring | Level 3 |  |
Assets: |  |
Fixed-maturity securities, available-for-sale, at fair value, net of allowance for credit loss |  | 0
Fund Investments | Fair Value Measured at Net Asset Value | Equity securities and warrants | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 5
Fund Investments | Recurring | Corporate securities | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 96
Fund Investments | Recurring | Equity securities and warrants | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 83 | 302
Fund Investments | Recurring | Structured products | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 248 | 128
Fund Investments | Recurring | Level 1 | Corporate securities | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 0
Fund Investments | Recurring | Level 1 | Equity securities and warrants | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 0 | 0
Fund Investments | Recurring | Level 1 | Structured products | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 0 | 0
Fund Investments | Recurring | Level 2 | Corporate securities | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 0
Fund Investments | Recurring | Level 2 | Equity securities and warrants | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 3 | 5
Fund Investments | Recurring | Level 2 | Structured products | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 59 | 82
Fund Investments | Recurring | Level 3 | Corporate securities | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 96
Fund Investments | Recurring | Level 3 | Equity securities and warrants | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | 80 | 297
Fund Investments | Recurring | Level 3 | Structured products | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets | $ 189 | 46
CLOs | Recurring | Short-term investments | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 135
CLOs | Recurring | Loans | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 4,570
CLOs | Recurring | Level 1 | Short-term investments | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 135
CLOs | Recurring | Level 1 | Loans | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 0
CLOs | Recurring | Level 2 | Short-term investments | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 0
CLOs | Recurring | Level 2 | Loans | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 4,570
CLOs | Recurring | Level 3 | Short-term investments | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | 0
CLOs | Recurring | Level 3 | Loans | Consolidated Investment Vehicles |  |
Assets: |  |
FG VIEs’ assets |  | $ 0

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