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Fair Value Measurement - Fair Value Level 3 Rollforward Recurring Basis (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
FG VIEs’ Assets |  |
Fair Value Level 3 Rollforward |  |
Fair value at beginning of period | $ 174 | $ 204
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Net income (loss) | (2) | 1
Other comprehensive income (loss) | 1 | 0
Purchases | 0 | 0
Sales | 0 | 0
Settlements | (6) | (8)
Transfers into Level 3 | 0 |
Fair value at end of period | 167 | 197
Change in unrealized gains/(losses) related to financial instruments held | (3) | 0
Consolidated Investment Vehicles | Equity securities and warrants |  |
Fair Value Level 3 Rollforward |  |
Fair value at beginning of period | 80 |
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Net income (loss) | 8 |
Other comprehensive income (loss) | 0 |
Purchases | 0 |
Sales | (2) |
Settlements | 0 |
Transfers into Level 3 | 3 |
Fair value at end of period | 89 |
Change in unrealized gains/(losses) related to financial instruments held | 7 |
Consolidated Investment Vehicles | Equity Securities and Warrants |  |
Fair Value Level 3 Rollforward |  |
Fair value at beginning of period |  | 297
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Net income (loss) |  | 33
Other comprehensive income (loss) |  | 0
Purchases |  | 4
Sales |  | (5)
Settlements |  | 0
Fair value at end of period |  | 329
Change in unrealized gains/(losses) related to financial instruments held |  | 32
Consolidated Investment Vehicles | Corporate securities |  |
Fair Value Level 3 Rollforward |  |
Fair value at beginning of period |  | 96
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Net income (loss) |  | (2)
Other comprehensive income (loss) |  | 0
Purchases |  | 4
Sales |  | (5)
Settlements |  | 0
Fair value at end of period |  | 93
Change in unrealized gains/(losses) related to financial instruments held |  | (3)
Consolidated Investment Vehicles | Structured products |  |
Fair Value Level 3 Rollforward |  |
Fair value at beginning of period | 189 | 46
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Net income (loss) | 4 | 2
Other comprehensive income (loss) | 0 | 0
Purchases | 29 | 0
Sales | (12) | (31)
Settlements | 0 | 0
Transfers into Level 3 | 10 |
Fair value at end of period | 220 | 17
Change in unrealized gains/(losses) related to financial instruments held | 5 | 0
Other |  |
Fair Value Level 3 Rollforward |  |
Fair value at beginning of period | 14 | 50
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Net income (loss) | (10) | (16)
Other comprehensive income (loss) | 1 | 0
Purchases | 0 | 0
Sales | 0 | 0
Settlements | 0 | 0
Transfers into Level 3 | 0 |
Fair value at end of period | 5 | 34
Change in unrealized gains/(losses) related to financial instruments held | (10) | (16)
Other | Other Comprehensive Income (Loss) |  |
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Change in unrealized gains/(losses) related to financial instruments held | 1 | 0
Financial Guaranty Variable Interest Entities |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Fair value at start of period | (554) | (715)
Total Pretax Realized And Unrealized Gains (Losses) Recorded As Liabilities [Abstract] |  |
Net income (loss) | 9 | 3
Other comprehensive income (loss) | (2) | (1)
Settlements | 148 | 9
Fair value at end of period | (399) | (704)
Change in unrealized gains/(losses) included in earnings related to financial instruments | 2 | (2)
Change in unrealized gains/(losses) included in OCI related to financial instruments | (2) | (1)
Liabilities of CIVs (9) |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Fair value at start of period |  | (4,154)
Total Pretax Realized And Unrealized Gains (Losses) Recorded As Liabilities [Abstract] |  |
Net income (loss) |  | (62)
Other comprehensive income (loss) |  | (8)
Settlements |  | 4
Fair value at end of period |  | (4,220)
Change in unrealized gains/(losses) included in earnings related to financial instruments |  | (65)
Change in unrealized gains/(losses) included in OCI related to financial instruments |  | (8)
Obligations of state and political subdivisions | Fixed-maturity securities, available-for-sale |  |
Fair Value Level 3 Rollforward |  |
Fair value at beginning of period | 6 | 47
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Net income (loss) | 0 | 0
Other comprehensive income (loss) | 0 | 1
Purchases | 0 | 0
Sales | 0 | 0
Settlements | 0 | (1)
Transfers into Level 3 | 0 |
Fair value at end of period | 6 | 47
Obligations of state and political subdivisions | Fixed-maturity securities, available-for-sale | Other Comprehensive Income (Loss) |  |
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Change in unrealized gains/(losses) related to financial instruments held | 0 | 1
RMBS | Fixed-maturity securities, available-for-sale |  |
Fair Value Level 3 Rollforward |  |
Fair value at beginning of period | 154 | 179
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Net income (loss) | 3 | 3
Other comprehensive income (loss) | 1 | (1)
Purchases | 0 | 0
Sales | 0 | 0
Settlements | (5) | (7)
Transfers into Level 3 | 0 |
Fair value at end of period | 153 | 174
RMBS | Fixed-maturity securities, available-for-sale | Other Comprehensive Income (Loss) |  |
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Change in unrealized gains/(losses) related to financial instruments held | 1 | (1)
Asset-backed securities | Fixed-maturity securities, available-for-sale |  |
Fair Value Level 3 Rollforward |  |
Fair value at beginning of period | 803 | 794
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Net income (loss) | 16 | 3
Other comprehensive income (loss) | 2 | (3)
Purchases | 10 | 5
Sales | 0 | 0
Settlements | (30) | (4)
Transfers into Level 3 | 20 |
Fair value at end of period | 821 | 795
Asset-backed securities | Fixed-maturity securities, available-for-sale | Other Comprehensive Income (Loss) |  |
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Change in unrealized gains/(losses) related to financial instruments held | 2 | (3)
Credit Risk Contract |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Fair value at start of period | (50) | (162)
Total pre-tax realized and unrealized gains (losses) recorded in: |  |
Net income (loss) | 10 | 15
Other comprehensive income (loss) | 0 | 0
Settlements | 1 | (1)
Fair value at end of period | (39) | (148)
Change in unrealized gains/(losses) included in earnings related to financial instruments | $ 4 | $ 14

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