Segment Reporting - Net Revenues by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2026	Aug. 31, 2025
Revenues
Net revenues	$ 2,221,934	$ 2,047,432	$ 6,445,515	$ 5,274,898
Maximum
Revenues
Net revenues	2,222,000	2,047,000	6,446,000	5,275,000
Americas
Revenues
Net revenues	1,638,000	1,448,000	4,573,000	3,545,000
Europe and the Middle East
Revenues
Net revenues	399,000	454,000	1,313,000	1,313,000
Asia-Pacific
Revenues
Net revenues	$ 185,000	$ 145,000	$ 560,000	$ 417,000

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income after deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).