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Fair Value Disclosures - Quantitative Information about Significant Unobservable Inputs Used in Level 3 Fair Value Measurements (Details) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2025 USD ($) $ / shares | Nov. 30, 2024 USD ($) $ / shares
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability | $ | $ 1,253,276,000 | $ 710,314,000
Other secured financings | $ | 611,903,000 | 24,848,000
Long-term debt | $ | 3,564,534,000 | 2,351,346,000
Level 3 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability | $ | 44,683,000 | 25,045,000
Other secured financings | $ | 16,114,000 | 14,884,000
Long-term debt | $ | 1,071,164,000 | 821,903,000
Level 3 | Non-exchange-traded securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | 272,309,000 | 239,364,000
Level 3 | Corporate debt securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | 34,380,000 | 24,931,000
Level 3 | CDOs and CLOs |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 34,377,000 | $ 53,388,000
Level 3 | CDOs and CLOs | Constant prepayment rate |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.20 | 0.20
Level 3 | CDOs and CLOs | Constant default rate |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.02 | 0.02
Level 3 | CDOs and CLOs | Loss severity |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.30 | 0.30
Level 3 | Residential mortgage-backed securities | Discounted Cash Flow |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 7,978,000 | $ 7,714,000
Level 3 | Residential mortgage-backed securities | Constant prepayment rate |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.12 | 0.20
Level 3 | Residential mortgage-backed securities | Constant default rate |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.003 |
Level 3 | Residential mortgage-backed securities | Loss severity |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.20 | 0.10
Level 3 | Residential mortgage-backed securities | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.14 | 0.12
Level 3 | Other ABS | Discounted Cash Flows, Market Approach, Scenario Analysis |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 122,633,000 | $ 98,172,000
Level 3 | Other ABS | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.79 | 0.92
Level 3 | Loans and other receivables |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 139,922,000 | $ 152,586,000
Level 3 | Embedded options | Basis points upfront |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative asset, measurement input |  | 0.3
Level 3 | Investments at fair value | Market Approach |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 155,554,000 | $ 132,769,000
Level 3 | Private equity securities | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input |  | 0.28
Level 3 | Private equity securities | Estimated revenue |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | $ | 29,763,576 | 29,908,372
Level 3 | Loans |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability | $ | $ 1,966,000 | $ 16,864,000
Level 3 | Loans | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input | $ | 100 |
Level 3 | Equity options |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability | $ | $ 4,323,000 | $ 1,396,000
Level 3 | Equity options | Volatility |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative asset, measurement input | 0.34 |
Level 3 | Other secured financings: | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input |  | 117
Level 3 | Long-term debt |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Long-term debt | $ | $ 1,071,164,000 | $ 821,903,000
Minimum | Level 3 | Non-exchange-traded securities | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0 | 0
Minimum | Level 3 | Non-exchange-traded securities | Volatility |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.30 |
Minimum | Level 3 | Corporate debt securities | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 49 | 28
Minimum | Level 3 | Corporate debt securities | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.17 |
Minimum | Level 3 | CDOs and CLOs | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 98 | 70
Minimum | Level 3 | CDOs and CLOs | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.13 | 0.14
Minimum | Level 3 | Other ABS | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 117 | 106
Minimum | Level 3 | Other ABS | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.14 | 0.19
Minimum | Level 3 | Other ABS | Cumulative loss rate |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.13 | 0.17
Minimum | Level 3 | Other ABS | Duration (years) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input, term | 18 days | 10 months 24 days
Minimum | Level 3 | Loans and other receivables | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 6 | 17
Minimum | Level 3 | Loans and other receivables | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.08 | 0.03
Minimum | Level 3 | Embedded options | Basis points upfront |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative asset, measurement input | 0.0 |
Derivative liability, measurement input | 0.0 | 8.0
Minimum | Level 3 | Private equity securities | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0 | 1
Minimum | Level 3 | Private equity securities | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.16 |
Minimum | Level 3 | Loans | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input | $ |  | 17
Minimum | Level 3 | Loans | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input |  | 0
Minimum | Level 3 | Equity options | Volatility |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability, measurement input | 0.28 | 0.28
Minimum | Level 3 | Other secured financings: | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 114 |
Minimum | Level 3 | Other secured financings: | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 0.76 | 0.60
Minimum | Level 3 | Long-term debt | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Long-term debt, measurement input | 70 | 61
Maximum | Level 3 | Non-exchange-traded securities | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 486 | 486
Maximum | Level 3 | Non-exchange-traded securities | Volatility |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.34 |
Maximum | Level 3 | Corporate debt securities | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 119 | 105
Maximum | Level 3 | Corporate debt securities | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.20 |
Maximum | Level 3 | CDOs and CLOs | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 100 | 106
Maximum | Level 3 | CDOs and CLOs | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.17 | 0.32
Maximum | Level 3 | Other ABS | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 135 | 127
Maximum | Level 3 | Other ABS | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.28 | 0.30
Maximum | Level 3 | Other ABS | Cumulative loss rate |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.15 | 0.34
Maximum | Level 3 | Other ABS | Duration (years) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input, term | 1 year 2 months 12 days | 1 year
Maximum | Level 3 | Loans and other receivables | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 117 | 106
Maximum | Level 3 | Loans and other receivables | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 2.56 | 2.52
Maximum | Level 3 | Embedded options | Basis points upfront |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative asset, measurement input | 0.4 |
Derivative liability, measurement input | 22.6 | 22.3
Maximum | Level 3 | Private equity securities | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 10,956 | 8,506
Maximum | Level 3 | Private equity securities | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.28 |
Maximum | Level 3 | Loans | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input | $ |  | 100
Maximum | Level 3 | Loans | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input |  | 2.05
Maximum | Level 3 | Equity options | Volatility |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability, measurement input | 0.72 | 1.02
Maximum | Level 3 | Other secured financings: | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 118 |
Maximum | Level 3 | Other secured financings: | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 1 | 1
Maximum | Level 3 | Long-term debt | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Long-term debt, measurement input | 122 | 122
Weighted Average | Level 3 | Non-exchange-traded securities | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 71 | 68
Weighted Average | Level 3 | Non-exchange-traded securities | Volatility |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.33 |
Weighted Average | Level 3 | Corporate debt securities | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 71 | 74
Weighted Average | Level 3 | Corporate debt securities | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.18 |
Weighted Average | Level 3 | CDOs and CLOs | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 99 | 94
Weighted Average | Level 3 | CDOs and CLOs | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.16 | 0.26
Weighted Average | Level 3 | Other ABS | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 132 | 121
Weighted Average | Level 3 | Other ABS | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.16 | 0.25
Weighted Average | Level 3 | Other ABS | Cumulative loss rate |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.14 | 0.24
Weighted Average | Level 3 | Other ABS | Duration (years) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input, term | 1 year 1 month 6 days | 27 days
Weighted Average | Level 3 | Loans and other receivables | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 101 | 75
Weighted Average | Level 3 | Loans and other receivables | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.50 | 0.50
Weighted Average | Level 3 | Embedded options | Basis points upfront |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative asset, measurement input | 0.4 |
Derivative liability, measurement input | 14.5 | 14.9
Weighted Average | Level 3 | Private equity securities | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 1,641 | 501
Weighted Average | Level 3 | Private equity securities | Discount rate/yield |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.28 |
Weighted Average | Level 3 | Loans | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input | $ | 0 | 75
Weighted Average | Level 3 | Loans | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input |  | 0.50
Weighted Average | Level 3 | Equity options | Volatility |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability, measurement input | 0.61 | 0.49
Weighted Average | Level 3 | Other secured financings: | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 116 |
Weighted Average | Level 3 | Other secured financings: | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 0.96 | 0.93
Weighted Average | Level 3 | Long-term debt | Price |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Long-term debt, measurement input | 102 | 96

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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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