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Fair Value Measurement - Quantitative Information - Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 8,118 | $ 8,917
Level 3 | Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 1,448 | $ 1,425
Level 3 | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value inputs internal floor |  | 0.10%
Minimum | Level 3 | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value inputs internal floor | 0.10% |
Maximum | Level 3 | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value inputs internal floor | 0.855% |
Weighted Average | Level 3 | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value inputs internal floor | 2970.00% |
Obligations of state and political subdivisions | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 10 | $ 6
Obligations of state and political subdivisions | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 5.50% | 7.40%
Obligations of state and political subdivisions | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 22.00% | 22.50%
Obligations of state and political subdivisions | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.50% | 7.80%
RMBS | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 145 | $ 154
RMBS | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.70% | 7.50%
RMBS | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 10.80% | 11.30%
RMBS | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 9.10% | 8.90%
CLOs | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 611 | $ 450
CLOs | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 12.50% |
CLOs | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 22.50% |
CLOs | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 17.90% |
Others | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 420 | $ 353
Others | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 6.40% | 6.20%
Others | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 9.10% | 11.70%
Others | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 6.70% | 7.80%
FG VIEs (see Note 8) | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 147 | $ 174
FG VIEs (see Note 8) | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 6.80% | 5.50%
FG VIEs (see Note 8) | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 10.80% | 10.90%
FG VIEs (see Note 8) | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 9.30% | 9.40%
Consolidated investment vehicles | Valuation, Income Approach | Level 3 | Assets of CIVs, equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 99 | $ 80
Yield (as a percent) |  | 20.90%
Consolidated investment vehicles | Valuation, Income Approach | Level 3 | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value |  | $ 189
Consolidated investment vehicles | Minimum | Valuation, Income Approach | Level 3 | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 1470.00%
Consolidated investment vehicles | Maximum | Valuation, Income Approach | Level 3 | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 2140.00%
Consolidated investment vehicles | Weighted Average | Valuation, Income Approach | Level 3 | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 1800.00%
Other assets | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 2 | $ 13
Fair value inputs term | 10 years | 10 years
Other assets | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 6.50% | 7.80%
Other assets | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.00% | 8.40%
Other assets | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 6.80% | 8.10%
Other invested assets | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 4 | $ 3
Fixed Maturities, Trading Securities | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Asset, fair value | $ 5 |
Fixed Maturities, Trading Securities | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 19.80% |
Fixed Maturities, Trading Securities | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 169.50% |
Fixed Maturities, Trading Securities | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 163.80% |
Conditional prepayment rate (CPR) | RMBS | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 1.80% | 0.10%
Conditional prepayment rate (CPR) | RMBS | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 17.00% | 15.00%
Conditional prepayment rate (CPR) | RMBS | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 2.80% | 3.40%
Conditional prepayment rate (CPR) | FG VIEs (see Note 8) | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 2.20% | 0.20%
Conditional prepayment rate (CPR) | FG VIEs (see Note 8) | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 25.00% | 21.40%
Conditional prepayment rate (CPR) | FG VIEs (see Note 8) | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 5.70% | 7.80%
CDR | Minimum | Level 3 | Credit Default Swap | Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 3.90% | 3.30%
CDR | Maximum | Level 3 | Credit Default Swap | Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 4.40% | 4.80%
CDR | Weighted Average | Level 3 | Credit Default Swap | Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 4.30% | 3.60%
CDR | RMBS | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 1.80% | 1.50%
CDR | RMBS | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 18.70% | 18.80%
CDR | RMBS | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 5.40% | 5.60%
CDR | FG VIEs (see Note 8) | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 1.30% | 1.30%
CDR | FG VIEs (see Note 8) | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 41.00% | 41.00%
CDR | FG VIEs (see Note 8) | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 10.70% | 10.40%
Loss severity | RMBS | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 50.00% | 50.00%
Loss severity | RMBS | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 125.00% | 125.00%
Loss severity | RMBS | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 79.90% | 82.60%
Loss severity | FG VIEs (see Note 8) | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 45.00% | 45.00%
Loss severity | FG VIEs (see Note 8) | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 100.00% | 100.00%
Loss severity | FG VIEs (see Note 8) | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate (as a percent) | 83.20% | 82.90%
Measurement Input, Discount Rate | CLOs | Minimum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 0.80% | 1.10%
Measurement Input, Discount Rate | CLOs | Maximum | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 2.90% | 9.50%
Measurement Input, Discount Rate | CLOs | Weighted Average | Valuation, Income Approach | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 1.90% | 2.60%
Measurement Input, Discount Rate | Consolidated investment vehicles | Valuation, Income Approach | Level 3 | Assets of CIVs, equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 24.30% |
Multiple enterprise/revenue value | Consolidated investment vehicles | Valuation, Market Approach | Level 3 | Assets of CIVs, equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Exit multiple-price to book | 105.00% |
Exit multiple-price to earnings | 550.00% | 550.00%
Multiple enterprise/revenue value | Consolidated investment vehicles | Valuation, Market Approach | Level 3 | Equity Securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Exit multiple-price to book |  | 110.00%
Measurement Input, EBITDA Multiple | Minimum | Valuation, Market Approach | Level 3 | Assets of CIVs, equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple - enterprise value/EBITDA |  | 5.50
Measurement Input, Long-Term Revenue Growth Rate | Consolidated investment vehicles | Valuation, Income Approach | Level 3 | Equity Securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 4.00%
Measurement Input, Long-Term Revenue Growth Rate | Consolidated investment vehicles | Valuation, Market Approach | Level 3 | Assets of CIVs, equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 4.00% |
Measurement Input, Price to Earnings | Consolidated investment vehicles | Valuation, Market Approach | Level 3 | Assets of CIVs, equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-price to earnings | 5.25 |
Measurement Input, Price to Book | Consolidated investment vehicles | Valuation, Market Approach | Level 3 | Equity Securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 110.00%

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