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v3.23.1

Fair Value Measurement - Quantitative Information - Assets & Liabilities (Details) - Level 3 - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Valuation, Income Approach | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ (148) | $ (162)
Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value | (704) | (715)
Valuation, Income Approach | Collateralized Loan Obligations | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value |  | (4,090)
Valuation, Income Approach | CLO obligations of CFEs | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value | (4,155) |
Valuation, Income Approach | Securitized borrowing | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value | (28) | (28)
Valuation, Income Approach | Warehouse financing debt | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Fair value | $ (37) | $ (36)
Minimum | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Hedge cost (as a percent) | 0.15% |
Bank profit (as a percent) | 0.496% | 5100.00%
Minimum | Valuation, Income Approach | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Hedge cost (as a percent) |  | 11.50%
Minimum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 4.50% | 4.80%
Minimum | Valuation, Income Approach | CLO obligations of CFEs | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 3.90% | 3.00%
Minimum | Valuation, Income Approach | Warehouse financing debt | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 0.00% | 11.70%
Maximum | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Hedge cost (as a percent) | 0.33% |
Bank profit (as a percent) | 3.068% | 27050.00%
Maximum | Valuation, Income Approach | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Hedge cost (as a percent) |  | 25.20%
Maximum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 10.40% | 10.90%
Maximum | Valuation, Income Approach | CLO obligations of CFEs | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 21.50% | 27.40%
Maximum | Valuation, Income Approach | Warehouse financing debt | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 9.50% | 16.90%
Weighted Average | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Hedge cost (as a percent) | 0.206% |
Bank profit (as a percent) | 1.095% | 10940.00%
Weighted Average | Valuation, Income Approach | Credit derivative liabilities, net |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Hedge cost (as a percent) |  | 15.70%
Weighted Average | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 5.70% | 5.90%
Weighted Average | Valuation, Income Approach | CLO obligations of CFEs | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 6.50% | 5.50%
Weighted Average | Valuation, Income Approach | Warehouse financing debt | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 6.90% | 12.90%
CPR | Minimum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 2.30% | 0.90%
CPR | Maximum | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 24.80% | 21.90%
CPR | Weighted Average | Valuation, Income Approach | FG VIEs' assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 10.20% | 6.30%
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 | 9.10% | 3.70%
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 | 82.40% | 39.90%
Discount Margin | Valuation, Income Approach | Securitized borrowing | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 23.70% | 20.90%
Terminal growth rate | Valuation, Income Approach | Securitized borrowing | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 3.00% | 3.00%
Market multiple-enterprise value/EBITDA | Minimum | Valuation, Market Approach | Securitized borrowing | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/EBITDA | 10.50 | 10
Market multiple-enterprise value/EBITDA | Maximum | Valuation, Market Approach | Securitized borrowing | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/EBITDA | 11.50 | 11
Market multiple-enterprise value/EBITDA | Weighted Average | Valuation, Market Approach | Securitized borrowing | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/EBITDA | 11.00 | 10.5
Exit multiple-EBITDA | Valuation, Income Approach | Securitized borrowing | Consolidated Investment Vehicles |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 1100.00% | 1100.00%
Obligations of state and political subdivisions | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 47 | $ 47
Obligations of state and political subdivisions | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.20% | 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) | 12.80% | 13.50%
Obligations of state and political subdivisions | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 9.10% | 9.40%
RMBS | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 174 | $ 179
RMBS | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.10% | 7.50%
RMBS | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 11.00% | 11.30%
RMBS | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 8.60% | 9.00%
RMBS | CPR | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 2.20% | 3.80%
RMBS | CPR | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 15.30% | 16.10%
RMBS | CPR | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 5.60% | 8.20%
RMBS | CDR | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 1.50% | 1.50%
RMBS | CDR | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 16.00% | 12.00%
RMBS | CDR | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 6.10% | 5.90%
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 | 82.50% | 82.50%
Life insurance transactions | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 340 | $ 342
Yield (as a percent) | 11.40% | 11.30%
CLOs | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 433 | $ 428
CLOs | Discount Margin | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 1.80%
CLOs | Discount Margin | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 4.10%
CLOs | Discount Margin | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) |  | 3.00%
Others | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 22 | $ 24
Others | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 6.70% | 7.40%
Others | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 12.90% | 12.90%
Others | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 12.80% | 12.80%
FG VIEs' assets | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 197 | $ 204
FG VIEs' assets | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.40% | 6.60%
FG VIEs' assets | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 10.40% | 10.90%
FG VIEs' assets | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 9.10% | 7.50%
FG VIEs' assets | CPR | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 2.30% | 0.90%
FG VIEs' assets | CPR | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 24.80% | 21.90%
FG VIEs' assets | CPR | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Conditional prepayment rate | 10.20% | 12.90%
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 | 9.10% | 7.60%
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 | 82.40% | 81.00%
Other | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 31 | $ 47
Term (years) | 10 years | 10 years
Other | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 7.80% | 7.70%
Other | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 8.30% | 8.40%
Other | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 8.00% | 8.10%
Consolidated Investment Vehicles | Valuation, Income Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 329 | $ 297
Yield (as a percent) | 8.70% | 10.00%
Consolidated Investment Vehicles | Valuation, Income Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 93 | $ 96
Yield (as a percent) | 16.30% | 16.30%
Consolidated Investment Vehicles | Valuation, Income Approach | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 17 | $ 46
Consolidated Investment Vehicles | Minimum | Valuation, Income Approach | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 15.70% | 12.80%
Consolidated Investment Vehicles | Maximum | Valuation, Income Approach | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 26.90% | 37.10%
Consolidated Investment Vehicles | Weighted Average | Valuation, Income Approach | Structured products |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 20.80% | 18.90%
Consolidated Investment Vehicles | Discount Margin | Minimum | Valuation, Income Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 20.40% | 19.80%
Consolidated Investment Vehicles | Discount Margin | Minimum | Valuation, Income Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 20.60% | 20.80%
Consolidated Investment Vehicles | Discount Margin | Maximum | Valuation, Income Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 27.20% | 25.10%
Consolidated Investment Vehicles | Discount Margin | Maximum | Valuation, Income Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 21.10% | 23.80%
Consolidated Investment Vehicles | Discount Margin | Weighted Average | Valuation, Income Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 22.90% | 22.70%
Consolidated Investment Vehicles | Discount Margin | Weighted Average | Valuation, Income Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 20.70% | 21.70%
Consolidated Investment Vehicles | Terminal growth rate | Minimum | Valuation, Income Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 3.00% | 3.00%
Consolidated Investment Vehicles | Terminal growth rate | Maximum | Valuation, Income Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 4.00% | 4.00%
Consolidated Investment Vehicles | Terminal growth rate | Weighted Average | Valuation, Income Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 3.50% | 3.50%
Consolidated Investment Vehicles | Market multiple-enterprise value/revenue | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-price to book | 110.00% | 115.00%
Exit multiple-price to earnings | 525.00% | 450.00%
Consolidated Investment Vehicles | Market multiple-enterprise value/revenue | Minimum | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/revenue | 1.05 | 1.05
Consolidated Investment Vehicles | Market multiple-enterprise value/revenue | Maximum | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/revenue | 1.10 | 1.1
Consolidated Investment Vehicles | Market multiple-enterprise value/revenue | Weighted Average | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/revenue | 1.08 | 1.08
Consolidated Investment Vehicles | Market multiple-enterprise value/EBITDA | Minimum | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/EBITDA | 2.50 | 2.5
Consolidated Investment Vehicles | Market multiple-enterprise value/EBITDA | Minimum | Valuation, Market Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/EBITDA | 2.50 | 2.5
Consolidated Investment Vehicles | Market multiple-enterprise value/EBITDA | Maximum | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/EBITDA | 11.50 | 11
Consolidated Investment Vehicles | Market multiple-enterprise value/EBITDA | Maximum | Valuation, Market Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/EBITDA | 2.75 | 2.75
Consolidated Investment Vehicles | Market multiple-enterprise value/EBITDA | Weighted Average | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/EBITDA | 10.67 | 10.25
Consolidated Investment Vehicles | Market multiple-enterprise value/EBITDA | Weighted Average | Valuation, Market Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Market multiple-enterprise value/EBITDA | 2.63 | 2.63
Consolidated Investment Vehicles | Cost | Valuation, Income Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 100.00% | 100.00%
Consolidated Investment Vehicles | Cost | Valuation, Income Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 100.00% | 100.00%
Consolidated Investment Vehicles | Exit multiple-EBITDA | Valuation, Market Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 800.00% | 800.00%
Consolidated Investment Vehicles | Exit multiple-EBITDA | Minimum | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 800.00% | 800.00%
Consolidated Investment Vehicles | Exit multiple-EBITDA | Maximum | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 1200.00% | 1200.00%
Consolidated Investment Vehicles | Exit multiple-EBITDA | Weighted Average | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 1014.00% | 1053.00%
Consolidated Investment Vehicles | Exit multiple-price to earnings | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 550.00% | 550.00%
Consolidated Investment Vehicles | Exit multiple-price to book | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 130.00% | 130.00%
Consolidated Investment Vehicles | Measurement Input, Discount Rate on Sale | Minimum | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 4.40% |
Consolidated Investment Vehicles | Measurement Input, Discount Rate on Sale | Minimum | Valuation, Market Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 4.40% |
Consolidated Investment Vehicles | Measurement Input, Discount Rate on Sale | Maximum | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 5.50% |
Consolidated Investment Vehicles | Measurement Input, Discount Rate on Sale | Maximum | Valuation, Market Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 5.50% |
Consolidated Investment Vehicles | Measurement Input, Discount Rate on Sale | Weighted Average | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 4.90% |
Consolidated Investment Vehicles | Measurement Input, Discount Rate on Sale | Weighted Average | Valuation, Market Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 4.90% |
Consolidated Investment Vehicles | Proceeds Held Back and Discounted | Minimum | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 30.00% |
Consolidated Investment Vehicles | Proceeds Held Back and Discounted | Minimum | Valuation, Market Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 30.00% |
Consolidated Investment Vehicles | Proceeds Held Back and Discounted | Maximum | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 95.00% |
Consolidated Investment Vehicles | Proceeds Held Back and Discounted | Maximum | Valuation, Market Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 95.00% |
Consolidated Investment Vehicles | Proceeds Held Back and Discounted | Weighted Average | Valuation, Market Approach | Equity securities and warrants |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 62.50% |
Consolidated Investment Vehicles | Proceeds Held Back and Discounted | Weighted Average | Valuation, Market Approach | Corporate securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 62.50% |
Collateralized Loan Obligations | Discount Margin | Minimum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 1.80% |
Collateralized Loan Obligations | Discount Margin | Maximum | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 4.00% |
Collateralized Loan Obligations | Discount Margin | Weighted Average | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Yield (as a percent) | 2.90% |
Other invested assets | Valuation, Income Approach |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets carried at fair value | $ 5 | $ 5

X
- Definition Represents the bank profit (in basis points), used as an input to measure fair value. + References No definition available. + Details
Name: | ago_FairValueInputsBankProfit
Namespace Prefix: | ago_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the hedge cost (in basis points), used as an input to measure fair value. + References No definition available. + Details
Name: | ago_FairValueInputsHedgeCost
Namespace Prefix: | ago_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
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