Commitments, Contingencies and Guarantees - Commitments and Contingencies (Details) $ in Millions	Nov. 30, 2022 USD ($)
Commitments And Guarantee Obligations [Line Items]
2023	$ 15,407.6
2024	288.9
2025 and 2026	283.0
2027 and 2028	12.7
2029 and Later	160.2
Maximum Payout	16,152.4
Equity commitments
Commitments And Guarantee Obligations [Line Items]
2023	25.2
2024	1.4
2025 and 2026	103.3
2027 and 2028	2.8
2029 and Later	160.2
Maximum Payout	292.9
Loan commitments
Commitments And Guarantee Obligations [Line Items]
2023	271.5
2024	0.0
2025 and 2026	70.0
2027 and 2028	9.9
2029 and Later	0.0
Maximum Payout	351.4
Loans purchase commitments
Commitments And Guarantee Obligations [Line Items]
2023	2,363.9
2024	0.0
2025 and 2026	0.0
2027 and 2028	0.0
2029 and Later	0.0
Maximum Payout	2,363.9
Underwriting commitments
Commitments And Guarantee Obligations [Line Items]
2023	62.3
2024	0.0
2025 and 2026	0.0
2027 and 2028	0.0
2029 and Later	0.0
Maximum Payout	62.3
Forward starting reverse repos
Commitments And Guarantee Obligations [Line Items]
2023	8,470.9
2024	0.0
2025 and 2026	0.0
2027 and 2028	0.0
2029 and Later	0.0
Maximum Payout	8,470.9
Forward starting repos
Commitments And Guarantee Obligations [Line Items]
2023	4,213.7
2024	0.0
2025 and 2026	0.0
2027 and 2028	0.0
2029 and Later	0.0
Maximum Payout	4,213.7
Other unfunded commitments
Commitments And Guarantee Obligations [Line Items]
2023	0.1
2024	287.5
2025 and 2026	109.7
2027 and 2028	0.0
2029 and Later	0.0
Maximum Payout	397.3
Back-to-back committed sales contracts
Commitments And Guarantee Obligations [Line Items]
Maximum Payout	2,670.0
Forward starting securities purchased under agreements to resell
Commitments And Guarantee Obligations [Line Items]
Maximum Payout	7,730.0
Forward starting securities sold under agreements to repurchase settled agreements
Commitments And Guarantee Obligations [Line Items]
Maximum Payout	$ 2.6