Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands	Nov. 30, 2024	Nov. 30, 2023
Variable Interest Entity [Line Items]
Total assets	$ 64,360,309	$ 57,905,161
Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Total assets	2,890,700	2,649,300
Related party private equity vehicles
Variable Interest Entity [Line Items]
Equity investments	1,000
Funded equity commitments	500
Carrying amount of equity investment	500
Related party private equity vehicles | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Total assets	3,700	3,100
Other investment vehicles
Variable Interest Entity [Line Items]
Equity investments	1,430,000	1,260,000
Funded equity commitments	1,170,000	1,100,000
Carrying amount of equity investment	1,110,000	1,070,000
Other investment vehicles | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Total assets	1,107,800	1,071,200
Agency mortgage-backed securities | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Total assets	1,840,000	1,890,000
Non-agency mortgage and other asset-backed securities | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Total assets	201,100	261,200
JCP Entities | Related party private equity vehicles
Variable Interest Entity [Line Items]
Equity investments	133,000	133,000
Funded equity commitments	123,200	122,600
Carrying amount of equity investment	$ 3,200	$ 3,100