Related Party Transactions (Tables)
 6 Months Ended
May 31, 2022
Related Party Transactions [Abstract]  
Schedule of Related Party Transactions The following is a description of our related party transactions with Jefferies and its affiliates:
•We provide services to and receive services from Jefferies under service agreements (in millions):
Three Months Ended 
May 31,		Six Months Ended 
May 31,
2022202120222021
Charges to Jefferies for services provided$5.8 $8.3 $13.2 $23.9 
Charges from Jefferies for services received2.9 8.5 8.0 18.4 
•We also provide investment banking and capital markets services to Jefferies and its affiliates. The following table presents the revenues earned by type of services provided (in millions):
Three Months Ended 
May 31,		Six Months Ended 
May 31,
2022202120222021
Investment banking$0.4 $10.5 $0.4 $24.1 
Commissions and other fees0.3 0.2 0.6 0.5 
•Receivables from and payables to Jefferies, included in Other assets and Accrued expenses and other liabilities, respectively, in our Consolidated Statements of Financial Condition (in millions):
May 31, 2022November 30, 2021
Receivable from Jefferies$0.5 $0.3 
Payable to Jefferies4.9 10.9 
Three Months Ended May 31, 2021Six Months Ended May 31, 2021
Securities purchased from Jefferies$8.0 $17.1 
Securities sold to Jefferies— 0.5 
Net gains (losses) relating to these contracts, which are included in Principal transactions revenues in our Consolidated Statements of Earnings, are as follows (in millions):
Three Months Ended May 31, 2021Six Months Ended May 31, 2021
Net gains on foreign exchange contracts$— $0.1 
Payments received from this affiliate for rent and other expenses are as follows (in millions):
Three Months Ended 
May 31,		Six Months Ended 
May 31,
2022202120222021
Payments received$0.1 $0.2 $0.3 $0.4