Commitments, Contingencies and Guarantees - Commitments (Details) $ in Millions	9 Months Ended
Aug. 31, 2024 USD ($)
Commitments and Guarantees Obligations [Line Items]
2024	$ 11,516.1
2025	884.0
2026 and 2027	613.0
2028 and 2029	0.2
2030 and Later	266.8
Maximum Payout	$ 13,280.1
Repurchase obligation settlement period	3 days
Equity commitments
Commitments and Guarantees Obligations [Line Items]
2024	$ 14.2
2025	25.3
2026 and 2027	34.9
2028 and 2029	0.2
2030 and Later	261.6
Maximum Payout	336.2
Loan commitments
Commitments and Guarantees Obligations [Line Items]
2024	0.0
2025	679.7
2026 and 2027	87.9
2028 and 2029	0.0
2030 and Later	5.2
Maximum Payout	772.8
Loan Purchase Commitments
Commitments and Guarantees Obligations [Line Items]
2024	3,315.4
2025	0.0
2026 and 2027	0.0
2028 and 2029	0.0
2030 and Later	0.0
Maximum Payout	3,315.4
Underwriting commitments
Commitments and Guarantees Obligations [Line Items]
2024	57.3
2025	0.0
2026 and 2027	0.0
2028 and 2029	0.0
2030 and Later	0.0
Maximum Payout	57.3
Forward starting reverse repos
Commitments and Guarantees Obligations [Line Items]
2024	4,406.9
2025	0.0
2026 and 2027	0.0
2028 and 2029	0.0
2030 and Later	0.0
Maximum Payout	4,406.9
Forward starting repos
Commitments and Guarantees Obligations [Line Items]
2024	3,512.1
2025	0.0
2026 and 2027	0.0
2028 and 2029	0.0
2030 and Later	0.0
Maximum Payout	3,512.1
Other unfunded commitments
Commitments and Guarantees Obligations [Line Items]
2024	210.2
2025	179.0
2026 and 2027	490.2
2028 and 2029	0.0
2030 and Later	0.0
Maximum Payout	879.4
Back-To-Back Committed Sales Contracts
Commitments and Guarantees Obligations [Line Items]
Maximum Payout	$ 3,200.0

Contractual Obligation, Due After Sixth Year

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- Definition

Contractual Obligation, Due in Third and Fourth Year

+ References

No definition available.

+ Details

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- Definition

Contractual Obligation, Due in fifth and Sixth Year

+ References

No definition available.

+ Details

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- Definition

Repos Obligation Settlement Period

+ References

No definition available.

+ Details

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- Definition

Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

+ Details

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- Definition

Amount of contractual obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

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- Definition

Amount of contractual obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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