Variable Interest Entities - Variable Interests in Non-Consolidated Variable Interest Entities (Details) - USD ($) $ in Thousands	May 31, 2022	Nov. 30, 2021
Variable Interest Entity [Line Items]
Assets	$ 53,156,330	$ 54,768,900
Liabilities	45,298,487	47,690,292
Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Assets	2,223,600	1,798,800
Liabilities	800	2,000
Maximum Exposure to Loss	4,805,900	3,862,700
VIE Assets	26,674,200	26,367,800
Nonconsolidated VIEs | CLOs
Variable Interest Entity [Line Items]
Assets	367,600	582,200
Liabilities	800	2,000
Maximum Exposure to Loss	2,731,900	2,557,100
VIE Assets	7,954,000	10,277,500
Nonconsolidated VIEs | Asset-backed vehicles
Variable Interest Entity [Line Items]
Assets	472,800	281,900
Liabilities	0	0
Maximum Exposure to Loss	579,100	359,300
VIE Assets	4,871,800	3,474,600
Nonconsolidated VIEs | Related party private equity vehicles
Variable Interest Entity [Line Items]
Assets	28,400	27,100
Liabilities	0	0
Maximum Exposure to Loss	39,100	37,800
VIE Assets	81,700	78,900
Nonconsolidated VIEs | Other investment vehicles
Variable Interest Entity [Line Items]
Assets	1,354,800	907,600
Liabilities	0	0
Maximum Exposure to Loss	1,455,800	908,500
VIE Assets	$ 13,766,700	$ 12,536,800