Variable Interest Entities - Non-consolidated VIEs - Additional Information (Details) - USD ($) $ in Thousands	Nov. 30, 2022	Nov. 30, 2021
Variable Interest Entity [Line Items]
Total assets	$ 51,057,683	$ 56,107,311	[1]
Investment in FXCM
Variable Interest Entity [Line Items]
Our total equity balance	$ 59,700	49,000
Ownership percentage	50.00%
Variable interest entity, not primary beneficiary
Variable Interest Entity [Line Items]
Total assets	$ 1,986,700	2,102,200
Variable interest entity, not primary beneficiary | Investment in FXCM
Variable Interest Entity [Line Items]
Our total equity balance	59,700
Fair value of senior secured term loan receivable	35,100	50,500
Related party private equity vehicles | Variable interest entity, not primary beneficiary
Variable Interest Entity [Line Items]
Total assets	24,800	27,100
Other investment vehicles
Variable Interest Entity [Line Items]
Equity commitments amount	1,140,000	1,090,000
Funded equity commitments	1,060,000	999,800
Carrying amount of equity investment	1,170,000	1,110,000
Other investment vehicles | Variable interest entity, not primary beneficiary
Variable Interest Entity [Line Items]
Total assets	1,172,600	1,111,500
Agency mortgage-backed securities | Variable interest entities
Variable Interest Entity [Line Items]
Total assets	1,470,000	1,310,000
Non-agency mortgage and other asset-backed securities | Variable interest entities
Variable Interest Entity [Line Items]
Total assets	180,600	253,900
JCP Entities | Related party private equity vehicles
Variable Interest Entity [Line Items]
Equity commitments amount	133,000
Funded equity commitments	122,400	122,300
Carrying amount of equity investment	$ 24,800	$ 27,100

[1] See Note 1 for a description of financial statement presentation changes made as a result of our Merger with Jefferies Group.