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Fair Value Measurement - Quantitative Information - Assets & Liabilities (Details) - Level 3 - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Internal floor (in bps) | 0.00100 | 0.00100
Valuation, Income Approach | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ (34) | $ (50)
Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ (393) | $ (554)
Minimum | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Hedge cost (in bps) | 0.114% | 0.102%
Bank profit (as a percent) | 0.798% | 1.056%
Minimum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 5.10% | 5.00%
Maximum | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Hedge cost (in bps) | 0.267% | 0.265%
Bank profit (as a percent) | 2.932% | 3.026%
Maximum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 11.00% | 10.70%
Weighted Average | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Hedge cost (in bps) | 0.157% | 0.158%
Bank profit (as a percent) | 1.462% | 1.586%
Weighted Average | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 6.30% | 5.80%
CPR | Minimum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 0.20% | 0.20%
CPR | Maximum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 21.80% | 21.40%
CPR | Weighted Average | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 7.20% | 7.80%
CDR | Minimum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 1.30% | 1.30%
CDR | Maximum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 41.00% | 41.00%
CDR | Weighted Average | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 10.50% | 10.40%
Loss severity | Minimum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 45.00% | 45.00%
Loss severity | Maximum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 100.00% | 100.00%
Loss severity | Weighted Average | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 83.00% | 82.90%
Obligations of state and political subdivisions | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 7 | $ 6
Obligations of state and political subdivisions | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 6.00% | 7.40%
Obligations of state and political subdivisions | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 20.00% | 22.50%
Obligations of state and political subdivisions | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.90% | 7.80%
RMBS | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 150 | $ 154
RMBS | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.80% | 7.50%
RMBS | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 11.50% | 11.30%
RMBS | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 9.10% | 8.90%
RMBS | CPR | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 1.30% | 0.10%
RMBS | CPR | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 17.00% | 15.00%
RMBS | CPR | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 3.00% | 3.40%
RMBS | CDR | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 1.70% | 1.50%
RMBS | CDR | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 18.70% | 18.80%
RMBS | CDR | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 5.40% | 5.60%
RMBS | Loss severity | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 50.00% | 50.00%
RMBS | Loss severity | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 125.00% | 125.00%
RMBS | Loss severity | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 80.50% | 82.60%
CLOs | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 411 | $ 450
CLOs | Discount margin | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 0.80% | 1.10%
CLOs | Discount margin | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 9.40% | 9.50%
CLOs | Discount margin | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 2.30% | 2.60%
Others | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 384 | $ 353
Others | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.70% | 6.20%
Others | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 10.10% | 11.70%
Others | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.80% | 7.80%
FG VIEs' assets | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 160 | $ 174
FG VIEs' assets | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 5.40% | 5.50%
FG VIEs' assets | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 11.00% | 10.90%
FG VIEs' assets | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 9.60% | 9.40%
FG VIEs' assets | CPR | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 0.20% | 0.20%
FG VIEs' assets | CPR | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 21.80% | 21.40%
FG VIEs' assets | CPR | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 7.20% | 7.80%
FG VIEs' assets | CDR | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 1.30% | 1.30%
FG VIEs' assets | CDR | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 41.00% | 41.00%
FG VIEs' assets | CDR | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 10.50% | 10.40%
FG VIEs' assets | Loss severity | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 45.00% | 45.00%
FG VIEs' assets | Loss severity | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 100.00% | 100.00%
FG VIEs' assets | Loss severity | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 83.00% | 82.90%
Structured products | Valuation, Income Approach | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value |  | $ 189
Structured products | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 14.70%
Structured products | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 21.40%
Structured products | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 18.00%
Other assets | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 4 | $ 13
Term (years) | 10 years | 10 years
Other assets | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.60% |
Implied Yield |  | 7.80%
Other assets | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 8.10% |
Implied Yield |  | 8.40%
Other assets | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.80% |
Implied Yield |  | 8.10%
Consolidated Investment Vehicles | Valuation, Income Approach | Equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 93 | $ 80
Consolidated Investment Vehicles | Valuation, Income Approach | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 225 |
Consolidated Investment Vehicles | Minimum | Valuation, Income Approach | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 10.70% |
Consolidated Investment Vehicles | Maximum | Valuation, Income Approach | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 30.70% |
Consolidated Investment Vehicles | Weighted Average | Valuation, Income Approach | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 17.90% |
Consolidated Investment Vehicles | Discount margin | Valuation, Income Approach | Equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 20.90%
Consolidated Investment Vehicles | Discount margin | Minimum | Valuation, Income Approach | Equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 19.90% |
Consolidated Investment Vehicles | Discount margin | Maximum | Valuation, Income Approach | Equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 30.70% |
Consolidated Investment Vehicles | Discount margin | Weighted Average | Valuation, Income Approach | Equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 20.70% |
Consolidated Investment Vehicles | Terminal growth rate | Valuation, Income Approach | Equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 4.00% | 4.00%
Consolidated Investment Vehicles | Measurement input, revenue multiple | Valuation, Market Approach | Equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-price to book | 105.00% | 110.00%
Market multiple-price to earnings | 550.00% | 550.00%
Consolidated Investment Vehicles | Exit multiple-price to book | Valuation, Market Approach | Equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 105.00% | 110.00%
Consolidated Investment Vehicles | Exit multiple-price to earnings | Valuation, Market Approach | Equity securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 550.00% | 550.00%
Other invested assets | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 4 | $ 3

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