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Goodwill and Intangible Assets (Tables)
 9 Months Ended
Aug. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
Nine Months Ended August 31, 2024
$ in thousandsInvestment Banking and Capital MarketsAsset ManagementTotal
Balance, at beginning of period$1,532,172 $315,684 $1,847,856 
Currency translation and other adjustments3,335 1,535 4,870 
Measurement period adjustment (1)— (28,346)(28,346)
Goodwill relating to acquisitions by Tessellis— 8,578 8,578 
Balance, at end of period$1,535,507 $297,451 $1,832,958 
(1)Includes a $27.0 million measurement period adjustment recorded during the first quarter of 2024 related to the OpNet acquisition. Refer to Note 4, Business Acquisitions for further information.
Nine Months Ended August 31, 2023
$ in thousandsInvestment Banking and Capital MarketsAsset ManagementTotal
Balance, at beginning of period$1,552,944 $183,170 $1,736,114 
Currency translation and other adjustments3,354 — 3,354 
Balance, at end of period$1,556,298 $183,170 $1,739,468 
Schedule of Finite-Lived Intangible Assets
August 31, 2024Weighted Average Remaining Lives (Years)
$ in thousandsGross CostAssets Acquired (1)Impairment LossesAccumulated AmortizationNet Carrying Amount
Customer relationships$136,848 $27,628 $— $(103,756)$60,720 6.0
Trademarks and trade names147,321 8,730 — (43,944)112,107 21.6
Exchange and clearing organization membership interests and registrations8,769 — (10)— 8,759 N/A
Other52,533 27,318 — (22,093)57,758 4.3
Total$345,471 $63,676 $(10)$(169,793)$239,344 
(1)Includes a $39.3 million measurement period adjustment recorded during the first quarter of 2024 related to the OpNet acquisition. Refer to Note 4, Business Acquisitions for further information.
November 30, 2023Weighted Average Remaining Lives (Years)
$ in thousandsGross CostAssets Acquired (1)Impairment LossesAccumulated AmortizationNet Carrying Amount
Customer relationships $126,449 $9,801 $— $(93,966)$42,284 6.3
Trademarks and trade names127,899 18,513 — (39,340)107,072 23.5
Exchange and clearing organization membership interests and registrations7,405 1,390 (78)— 8,717 N/A
Other14,958 37,026 — (13,137)38,847 5.0
Total$276,711 $66,730 $(78)$(146,443)$196,920 
(1)Refer to Note 4, Business Acquisitions for further information.
Schedule of Indefinite-Lived Intangible Assets
August 31, 2024Weighted Average Remaining Lives (Years)
$ in thousandsGross CostAssets Acquired (1)Impairment LossesAccumulated AmortizationNet Carrying Amount
Customer relationships$136,848 $27,628 $— $(103,756)$60,720 6.0
Trademarks and trade names147,321 8,730 — (43,944)112,107 21.6
Exchange and clearing organization membership interests and registrations8,769 — (10)— 8,759 N/A
Other52,533 27,318 — (22,093)57,758 4.3
Total$345,471 $63,676 $(10)$(169,793)$239,344 
(1)Includes a $39.3 million measurement period adjustment recorded during the first quarter of 2024 related to the OpNet acquisition. Refer to Note 4, Business Acquisitions for further information.
November 30, 2023Weighted Average Remaining Lives (Years)
$ in thousandsGross CostAssets Acquired (1)Impairment LossesAccumulated AmortizationNet Carrying Amount
Customer relationships $126,449 $9,801 $— $(93,966)$42,284 6.3
Trademarks and trade names127,899 18,513 — (39,340)107,072 23.5
Exchange and clearing organization membership interests and registrations7,405 1,390 (78)— 8,717 N/A
Other14,958 37,026 — (13,137)38,847 5.0
Total$276,711 $66,730 $(78)$(146,443)$196,920 
(1)Refer to Note 4, Business Acquisitions for further information.
Schedule of Future Amortization Expense Related to Intangible Assets
Estimated future amortization expense for the next five fiscal years (in thousands):
Remainder of fiscal year 2024$9,720 
Year ending November 30, 202533,121 
Year ending November 30, 202633,083 
Year ending November 30, 202733,049 
Year ending November 30, 202832,806