Collateralized Transactions - Contractual Maturity (Details) - USD ($) $ in Thousands	May 31, 2022	Nov. 30, 2021
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	$ 1,876,434	$ 1,525,721
Repurchase agreements	17,688,298	16,019,400
Obligation to return securities received as collateral, at fair value	1,322	7,289
Total	19,566,054	17,552,410
Overnight and Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	1,088,631	595,628
Repurchase agreements	9,267,240	6,551,934
Obligation to return securities received as collateral, at fair value	1,322	7,289
Total	10,357,193	7,154,851
Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	107,370	1,318
Repurchase agreements	2,549,573	1,798,716
Obligation to return securities received as collateral, at fair value	0	0
Total	2,656,943	1,800,034
31 to 90 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	285,165	539,623
Repurchase agreements	2,363,392	4,361,993
Obligation to return securities received as collateral, at fair value	0	0
Total	2,648,557	4,901,616
Greater than 90 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	395,268	389,152
Repurchase agreements	3,508,093	3,306,757
Obligation to return securities received as collateral, at fair value	0	0
Total	$ 3,903,361	$ 3,695,909