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Fair Value Disclosures - Quantitative Information about Significant Unobservable Inputs Used in Level 3 Fair Value Measurements (Details) | 6 Months Ended | 12 Months Ended
--- | --- | ---
May 31, 2025 USD ($) $ / shares | Nov. 30, 2024 USD ($) $ / shares
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability | $ | $ 722,726,000 | $ 710,314,000
Other secured financings | $ | 429,289,000 | 24,848,000
Long-term debt | $ | 3,304,517,000 | 2,351,346,000
Level 3 |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability | $ | 40,701,000 | 25,045,000
Other secured financings | $ | 18,876,000 | 14,884,000
Long-term debt | $ | 991,156,000 | 821,903,000
Level 3 | Non-exchange-traded securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 205,389,000 | $ 239,364,000
Level 3 | Non-exchange-traded securities | Price | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0 | 0
Level 3 | Non-exchange-traded securities | Price | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 486 | 486
Level 3 | Non-exchange-traded securities | Price | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 80 | 68
Level 3 | Corporate debt securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 38,700,000 | $ 24,931,000
Level 3 | Corporate debt securities | Price | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 49 | 28
Level 3 | Corporate debt securities | Price | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 118 | 105
Level 3 | Corporate debt securities | Price | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 52 | 74
Level 3 | Corporate debt securities | Discount rate/yield | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.18 |
Level 3 | Corporate debt securities | Discount rate/yield | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.26 |
Level 3 | Corporate debt securities | Discount rate/yield | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.21 |
Level 3 | CDOs and CLOs |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 63,639,000 | $ 53,388,000
Level 3 | CDOs and CLOs | Price | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 98 | 70
Level 3 | CDOs and CLOs | Price | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 114 | 106
Level 3 | CDOs and CLOs | Price | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 105 | 94
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 | CDOs and CLOs | Discount rate/yield | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.13 | 0.14
Level 3 | CDOs and CLOs | Discount rate/yield | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.19 | 0.32
Level 3 | CDOs and CLOs | Discount rate/yield | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.17 | 0.26
Level 3 | Residential mortgage-backed securities | Discounted Cash Flow |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 7,947,000 | $ 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 | 0.40 | 0.20
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 | 0.90 | 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 | 0.18 | 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 | $ | $ 152,664,000 | $ 98,172,000
Level 3 | Other ABS | Price | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 114 | 106
Level 3 | Other ABS | Price | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 135 | 127
Level 3 | Other ABS | Price | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 122 | 121
Level 3 | Other ABS | Discount rate/yield | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.10 | 0.19
Level 3 | Other ABS | Discount rate/yield | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.29 | 0.30
Level 3 | Other ABS | Discount rate/yield | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.19 | 0.25
Level 3 | Other ABS | Cumulative loss rate | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.11 | 0.17
Level 3 | Other ABS | Cumulative loss rate | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.34 | 0.34
Level 3 | Other ABS | Cumulative loss rate | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.17 | 0.24
Level 3 | Other ABS | Duration (years) | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input, term | 18 days | 10 months 24 days
Level 3 | Other ABS | Duration (years) | Maximum |  |
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
Level 3 | Other ABS | Duration (years) | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input, term | 1 year | 27 days
Level 3 | Other ABS | Estimated recovery percentage |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.83 | 0.92
Level 3 | Loans and other receivables |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 92,168,000 | $ 152,586,000
Level 3 | Loans and other receivables | Price | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 8 | 17
Level 3 | Loans and other receivables | Price | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 114 | 106
Level 3 | Loans and other receivables | Price | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 92 | 75
Level 3 | Loans and other receivables | Estimated recovery percentage | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.17 | 0.03
Level 3 | Loans and other receivables | Estimated recovery percentage | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 2.51 | 2.52
Level 3 | Loans and other receivables | Estimated recovery percentage | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0.91 | 0.50
Level 3 | Options | Basis points upfront |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative asset, measurement input | 0.3 | 0.3
Level 3 | Options | Basis points upfront | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability, measurement input | 0.0 | 8.0
Level 3 | Options | Basis points upfront | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability, measurement input | 23.8 | 22.3
Level 3 | Options | Basis points upfront | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability, measurement input | 15.6 | 14.9
Level 3 | Investments at fair value | Market Approach |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned | $ | $ 148,059,000 | $ 132,769,000
Level 3 | Private equity securities | Price | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 0 | 1
Level 3 | Private equity securities | Price | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 9,133 | 8,506
Level 3 | Private equity securities | Price | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments owned, measurement input | 1,704 | 501
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 | 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 | $ | 29,733,947 | 29,908,372
Level 3 | Loans |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability | $ |  | $ 16,864,000
Level 3 | Loans | Price | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input | $ |  | 17
Level 3 | Loans | Price | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input | $ |  | 100
Level 3 | Loans | Price | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input | $ |  | 75
Level 3 | Loans | Estimated recovery percentage | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input |  | 0
Level 3 | Loans | Estimated recovery percentage | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input |  | 2.05
Level 3 | Loans | Estimated recovery percentage | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Financial instruments sold, not yet purchased, measurement input |  | 0.50
Level 3 | Equity options |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability | $ | $ 4,701,000 | $ 1,396,000
Level 3 | Equity options | Volatility | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability, measurement input | 0.49 | 0.28
Level 3 | Equity options | Volatility | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability, measurement input | 0.51 | 1.02
Level 3 | Equity options | Volatility | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Derivative liability, measurement input | 0.50 | 0.49
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 | Other secured financings: | Price | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 112 |
Level 3 | Other secured financings: | Price | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 117 |
Level 3 | Other secured financings: | Price | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 114 |
Level 3 | Other secured financings: | Estimated recovery percentage | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 0.76 | 0.60
Level 3 | Other secured financings: | Estimated recovery percentage | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 1 | 1
Level 3 | Other secured financings: | Estimated recovery percentage | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Other secured financings, measurement input | 0.96 | 0.93
Level 3 | Long-term debt |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Long-term debt | $ | $ 990,274,000 | $ 821,903,000
Level 3 | Long-term debt | Price | Minimum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Long-term debt, measurement input | 66 | 61
Level 3 | Long-term debt | Price | Maximum |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Long-term debt, measurement input | 116 | 122
Level 3 | Long-term debt | Price | Weighted Average |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Long-term debt, measurement input | 97 | 96

X
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X
- Definition Value of input used to measure derivative asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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X
- 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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