Collateralized Transactions - Contractual Maturity (Details) - USD ($) $ in Thousands	May 31, 2023	Nov. 30, 2022
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities lending arrangements	$ 1,221,523	$ 1,366,025
Repurchase agreements	16,881,617	13,603,033
Obligation to return securities received as collateral, at fair value	9,486	100,362
Total	18,112,626	15,069,420
Overnight and Continuous
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities lending arrangements	651,252	808,472
Repurchase agreements	8,699,975	6,930,667
Obligation to return securities received as collateral, at fair value	9,486	100,362
Total	9,360,713	7,839,501
Up to 30 Days
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities lending arrangements	50,000	0
Repurchase agreements	2,262,499	1,521,629
Obligation to return securities received as collateral, at fair value	0	0
Total	2,312,499	1,521,629
31-90 Days
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities lending arrangements	219,962	273,865
Repurchase agreements	1,923,173	2,262,705
Obligation to return securities received as collateral, at fair value	0	0
Total	2,143,135	2,536,570
Greater than 90 Days
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities lending arrangements	300,309	283,688
Repurchase agreements	3,995,970	2,888,032
Obligation to return securities received as collateral, at fair value	0	0
Total	$ 4,296,279	$ 3,171,720