Commitments, Contingencies and Guarantees - Commitments and Contingencies (Details) $ in Millions	3 Months Ended
Feb. 28, 2022 USD ($)
Guarantor Obligations [Line Items]
2022	$ 16,067.4
2023	779.6
2024 and 2025	8.1
2026 and 2027	65.2
2028 and Later	35.2
Maximum Payout	$ 16,955.5
Guarantor obligation settled period	3 days
Equity commitments
Guarantor Obligations [Line Items]
2022	$ 93.8
2023	27.3
2024 and 2025	2.7
2026 and 2027	5.2
2028 and Later	35.2
Maximum Payout	164.2
Loan commitments
Guarantor Obligations [Line Items]
2022	0.0
2023	275.3
2024 and 2025	0.0
2026 and 2027	60.0
2028 and Later	0.0
Maximum Payout	335.3
Underwriting commitments
Guarantor Obligations [Line Items]
2022	116.9
2023	0.0
2024 and 2025	0.0
2026 and 2027	0.0
2028 and Later	0.0
Maximum Payout	116.9
Forward starting reverse repos
Guarantor Obligations [Line Items]
2022	9,616.7
2023	0.0
2024 and 2025	0.0
2026 and 2027	0.0
2028 and Later	0.0
Maximum Payout	9,616.7
Forward starting repos
Guarantor Obligations [Line Items]
2022	6,215.0
2023	0.0
2024 and 2025	0.0
2026 and 2027	0.0
2028 and Later	0.0
Maximum Payout	6,215.0
Other unfunded commitments
Guarantor Obligations [Line Items]
2022	25.0
2023	477.0
2024 and 2025	5.4
2026 and 2027	0.0
2028 and Later	0.0
Maximum Payout	507.4
Forward starting securities purchased under agreements to resell settled
Guarantor Obligations [Line Items]
Maximum Payout	$ 9,580.0

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