Variable Interest Entities - Additional Information (Details) - USD ($) $ in Thousands	May 31, 2021	Nov. 30, 2020
Variable Interest Entity [Line Items]
Carrying amount	$ 52,171,073	$ 47,751,997
Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying amount	1,230,900	1,071,000
Related party private equity vehicles | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying amount	23,700	19,000
Other investment vehicles
Variable Interest Entity [Line Items]
Equity investments	662,300	749,300
Funded equity commitments	661,100	748,100
Carrying amount of equity investment	796,300	739,700
Other investment vehicles | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying amount	796,300	739,700
Agency mortgage-backed securities | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying amount	1,418,200	1,571,600
Non-agency mortgage and other asset-backed securities | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Carrying amount	239,200	252,000
JCP Entities | Related party private equity vehicles
Variable Interest Entity [Line Items]
Equity investments	133,000	133,000
Funded equity commitments	122,100	122,000
Carrying amount of equity investment	$ 23,700	$ 19,000