Variable Interest Entities - Variable Interests in Non-Consolidated Variable Interest Entities (Details) - USD ($) $ in Thousands	May 31, 2024	Nov. 30, 2023
Variable Interest Entity [Line Items]
Assets	$ 63,000,530	$ 57,905,161
Liabilities	53,047,938	48,102,620
Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Assets	2,363,900	2,649,300
Liabilities	19,800	14,100
Maximum Exposure to Loss	7,051,000	6,323,600
VIE Assets	35,044,000	28,259,800
Nonconsolidated VIEs | CLOs
Variable Interest Entity [Line Items]
Assets	501,000	913,300
Liabilities	19,800	14,100
Maximum Exposure to Loss	4,512,300	4,414,000
VIE Assets	12,391,600	9,455,500
Nonconsolidated VIEs | Asset-backed vehicles
Variable Interest Entity [Line Items]
Assets	757,200	661,700
Liabilities	0	0
Maximum Exposure to Loss	1,124,700	661,700
VIE Assets	3,510,700	3,734,800
Nonconsolidated VIEs | Related party private equity vehicles
Variable Interest Entity [Line Items]
Assets	2,700	3,100
Liabilities	0	0
Maximum Exposure to Loss	13,200	14,200
VIE Assets	27,800	10,300
Nonconsolidated VIEs | Other investment vehicles
Variable Interest Entity [Line Items]
Assets	1,103,000	1,071,200
Liabilities	0	0
Maximum Exposure to Loss	1,400,800	1,233,700
VIE Assets	$ 19,113,900	$ 15,059,200