v3.26.3
Collateralized Transactions - Contractual Maturity (Details) - USD ($)
$ in Millions
Aug. 31, 2026
Nov. 30, 2025
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Securities lending arrangements $ 4,023.0 $ 2,540.8
Repurchase agreements 19,066.6 18,261.2
Obligation to return securities received as collateral, at fair value 289.9 200.5
Total 23,379.5 21,002.5
Overnight and Continuous    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Securities lending arrangements 3,402.3 2,072.7
Repurchase agreements 9,625.1 2,108.1
Obligation to return securities received as collateral, at fair value 289.9 200.5
Total 13,317.3 4,381.3
Up to 30 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Securities lending arrangements 397.2 123.8
Repurchase agreements 1,689.9 9,569.4
Obligation to return securities received as collateral, at fair value 0.0 0.0
Total 2,087.1 9,693.2
31-90 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Securities lending arrangements 144.5 81.3
Repurchase agreements 4,342.5 2,959.8
Obligation to return securities received as collateral, at fair value 0.0 0.0
Total 4,487.0 3,041.1
Greater than 90 Days    
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]    
Securities lending arrangements 79.0 263.0
Repurchase agreements 3,409.1 3,623.9
Obligation to return securities received as collateral, at fair value 0.0 0.0
Total $ 3,488.1 $ 3,886.9