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Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands	Feb. 28, 2026	Nov. 30, 2025
Variable Interest Entity [Line Items]
Assets	$ 74,380,490	$ 76,012,347
Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Assets	3,851,000	4,178,800
Related party private equity vehicles
Variable Interest Entity [Line Items]
Equity investments	400	400
Funded equity commitments	3,500	3,400
Related party private equity vehicles | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Assets	3,500	3,500
Other investment vehicles
Variable Interest Entity [Line Items]
Equity investments	188,200	282,200
Carrying amount of equity investment	1,720,000	1,720,000
Other investment vehicles | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Assets	1,715,100	1,722,700
Agency mortgage-backed securities | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Assets	1,390,000	1,060,000
Non-agency mortgage and other asset-backed securities | Nonconsolidated VIEs
Variable Interest Entity [Line Items]
Assets	183,400	156,300
JCP Entities | Related party private equity vehicles
Variable Interest Entity [Line Items]
Equity investments	$ 8,800	$ 9,700

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