Variable Interest Entities - Variable Interests in Non-Consolidated Variable Interest Entities (Details) - USD ($) $ in Thousands	Feb. 28, 2025	Nov. 30, 2024
Variable Interest Entity [Line Items]
Assets	$ 70,218,891	$ 64,360,309
Liabilities	59,950,046	54,134,916
Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Assets	3,452,200	2,890,700
Liabilities	26,300	26,500
Maximum Exposure to Loss	8,507,000	8,837,200
VIE Assets	39,523,600	38,237,600
Nonconsolidated VIEs | CLOs
Variable Interest Entity [Line Items]
Assets	1,356,600	951,800
Liabilities	26,300	26,500
Maximum Exposure to Loss	6,109,400	6,511,100
VIE Assets	15,549,000	14,872,400
Nonconsolidated VIEs | Asset-backed vehicles
Variable Interest Entity [Line Items]
Assets	853,600	827,400
Liabilities	0	0
Maximum Exposure to Loss	989,500	946,300
VIE Assets	4,354,200	4,266,700
Nonconsolidated VIEs | Related party private equity vehicles
Variable Interest Entity [Line Items]
Assets	3,300	3,700
Liabilities	0	0
Maximum Exposure to Loss	13,600	14,000
VIE Assets	33,900	34,400
Nonconsolidated VIEs | Other investment vehicles
Variable Interest Entity [Line Items]
Assets	1,238,700	1,107,800
Liabilities	0	0
Maximum Exposure to Loss	1,394,500	1,365,800
VIE Assets	$ 19,586,500	$ 19,064,100