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Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Feb. 29, 2024
Nov. 30, 2024
Nov. 30, 2023
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]      
Assets Acquired - finite-lived intangible assets   $ 61,299 $ 66,730
Impairment losses - indefinite lived intangible assets   (10) (78)
Accumulated amortization - finite lived intangible assets   (176,644) (146,443)
Total gross costs - intangible assets   341,726 276,711
Total net carrying amount - intangible assets   $ 226,371 196,920
OpNet      
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]      
Weighted Average Remaining Lives (Years)   20 years  
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   $ 8,715 7,405
Assets Acquired - indefinite-lived intangible assets   0 1,390
Impairment losses - indefinite lived intangible assets   (10) (78)
Net carrying amount - indefinite lived intangible assets   8,705 8,717
Customer relationships      
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]      
Gross costs - finite lived intangible assets   136,049 126,449
Assets Acquired - finite-lived intangible assets   26,450 9,801
Impairment losses - indefinite lived intangible assets   0 0
Accumulated amortization - finite lived intangible assets   (104,539) (93,966)
Net carrying amount - finite lived intangible assets   $ 57,960 $ 42,284
Weighted Average Remaining Lives (Years)   5 years 7 months 6 days 6 years 3 months 18 days
Trademarks and trade names      
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]      
Gross costs - finite lived intangible assets   $ 146,032 $ 127,899
Assets Acquired - finite-lived intangible assets   8,533 18,513
Impairment losses - indefinite lived intangible assets   0 0
Accumulated amortization - finite lived intangible assets   (45,412) (39,340)
Net carrying amount - finite lived intangible assets   $ 109,153 $ 107,072
Weighted Average Remaining Lives (Years)   21 years 4 months 24 days 23 years 6 months
Other      
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]      
Gross costs - finite lived intangible assets   $ 50,930 $ 14,958
Assets Acquired - finite-lived intangible assets   26,316 37,026
Impairment losses - indefinite lived intangible assets   0 0
Accumulated amortization - finite lived intangible assets   (26,693) (13,137)
Net carrying amount - finite lived intangible assets   $ 50,553 $ 38,847
Weighted Average Remaining Lives (Years)   3 years 10 months 24 days 5 years