Commitments, Contingencies and Guarantees - Commitments and Contingencies (Details) $ in Millions	9 Months Ended
Aug. 31, 2026 USD ($)
Commitments And Guarantee Obligations [Line Items]
2026	$ 6,434.3
2027	1,240.3
2028 and 2029	3,224.7
2030 and 2031	147.7
2032 and Later	99.2
Maximum Payout	$ 11,146.2
Repurchase obligation settlement period	3 days
Equity commitments
Commitments And Guarantee Obligations [Line Items]
2026	$ 4.0
2027	105.8
2028 and 2029	88.9
2030 and 2031	0.6
2032 and Later	88.6
Maximum Payout	287.9
Loan commitments
Commitments And Guarantee Obligations [Line Items]
2026	0.6
2027	193.4
2028 and 2029	101.7
2030 and 2031	105.7
2032 and Later	10.6
Maximum Payout	412.0
Loan purchase commitments
Commitments And Guarantee Obligations [Line Items]
2026	2,768.1
2027	0.0
2028 and 2029	0.0
2030 and 2031	0.0
2032 and Later	0.0
Maximum Payout	2,768.1
Forward starting reverse repos
Commitments And Guarantee Obligations [Line Items]
2026	2,381.1
2027	0.0
2028 and 2029	0.0
2030 and 2031	0.0
2032 and Later	0.0
Maximum Payout	2,381.1
Forward starting repos
Commitments And Guarantee Obligations [Line Items]
2026	1,037.8
2027	0.0
2028 and 2029	0.0
2030 and 2031	0.0
2032 and Later	0.0
Maximum Payout	1,037.8
Other unfunded commitments
Commitments And Guarantee Obligations [Line Items]
2026	242.7
2027	941.1
2028 and 2029	3,034.1
2030 and 2031	41.4
2032 and Later	0.0
Maximum Payout	4,259.3
Back-to-back committed sales contracts
Commitments And Guarantee Obligations [Line Items]
Maximum Payout	$ 2,590.0

Commitments and guarantee obligations.

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+ References

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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 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.9-06)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

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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).

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Amount of contractual obligation to be paid in remainder of current fiscal year.

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