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Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 29, 2024 | Aug. 31, 2025 | Nov. 30, 2024
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Assets Acquired - finite-lived intangible assets |  | $ 721 | $ 61,299
Impairment losses - indefinite lived intangible assets |  |  | (10)
Accumulated amortization - finite lived intangible assets |  | (212,901) | (176,644)
Total gross costs - intangible assets |  | 424,488 | 341,726
Total net carrying amount - intangible assets |  | 212,308 | 226,371
OpNet |  |  |
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets increase (decrease) | $ 39,300 |  |
Exchange and clearing organization membership interests and registrations |  |  |
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Gross costs - indefinite lived intangible assets |  | 8,781 | 8,715
Assets Acquired - indefinite-lived intangible assets |  | 0 | 0
Impairment losses - indefinite lived intangible assets |  |  | (10)
Net carrying amount - indefinite lived intangible assets |  | 8,781 | 8,705
Customer relationships |  |  |
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Gross costs - finite lived intangible assets |  | 166,958 | 136,049
Assets Acquired - finite-lived intangible assets |  | 622 | 26,450
Impairment losses - indefinite lived intangible assets |  |  | 0
Accumulated amortization - finite lived intangible assets |  | (114,341) | (104,539)
Net carrying amount - finite lived intangible assets |  | $ 53,239 | $ 57,960
Weighted Average Remaining Lives (Years) |  | 5 years 1 month 6 days | 5 years 7 months 6 days
Trademarks and trade names |  |  |
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Gross costs - finite lived intangible assets |  | $ 161,280 | $ 146,032
Assets Acquired - finite-lived intangible assets |  | 0 | 8,533
Impairment losses - indefinite lived intangible assets |  |  | 0
Accumulated amortization - finite lived intangible assets |  | (54,358) | (45,412)
Net carrying amount - finite lived intangible assets |  | $ 106,922 | $ 109,153
Weighted Average Remaining Lives (Years) |  | 20 years 10 months 24 days | 21 years 4 months 24 days
Other |  |  |
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Gross costs - finite lived intangible assets |  | $ 87,469 | $ 50,930
Assets Acquired - finite-lived intangible assets |  | 99 | 26,316
Impairment losses - indefinite lived intangible assets |  |  | 0
Accumulated amortization - finite lived intangible assets |  | (44,202) | (26,693)
Net carrying amount - finite lived intangible assets |  | $ 43,366 | $ 50,553
Weighted Average Remaining Lives (Years) |  | 3 years 7 months 6 days | 3 years 10 months 24 days

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