Variable Interest Entities - Variable Interests in Non-Consolidated Variable Interest Entities (Details) - USD ($) $ in Thousands	Aug. 31, 2024	Nov. 30, 2023
Variable Interest Entity [Line Items]
Assets	$ 63,275,098	$ 57,905,161
Liabilities	53,159,331	48,102,620
Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Assets	2,659,500	2,649,300
Liabilities	15,000	14,100
Maximum Exposure to Loss	8,043,600	6,323,600
VIE Assets	37,053,200	28,259,800
Nonconsolidated VIEs | CLOs
Variable Interest Entity [Line Items]
Assets	779,100	913,300
Liabilities	15,000	14,100
Maximum Exposure to Loss	5,538,200	4,414,000
VIE Assets	12,908,900	9,455,500
Nonconsolidated VIEs | Asset-backed vehicles
Variable Interest Entity [Line Items]
Assets	816,600	661,700
Liabilities	0	0
Maximum Exposure to Loss	1,155,400	661,700
VIE Assets	3,774,400	3,734,800
Nonconsolidated VIEs | Related party private equity vehicles
Variable Interest Entity [Line Items]
Assets	2,500	3,100
Liabilities	0	0
Maximum Exposure to Loss	13,100	14,200
VIE Assets	26,500	10,300
Nonconsolidated VIEs | Other investment vehicles
Variable Interest Entity [Line Items]
Assets	1,061,300	1,071,200
Liabilities	0	0
Maximum Exposure to Loss	1,336,900	1,233,700
VIE Assets	$ 20,343,400	$ 15,059,200