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Securitization Activities - Retained Interests in SPEs (Details) - USD ($) $ in Millions	Feb. 28, 2026	Nov. 30, 2025
Securitization Vehicles [Line Items]
Total RMBS securitization assets	$ 333.6	$ 405.7
Total CMBS securitization assets	1,104.9	1,108.2
CLOs	10,907.4	10,970.6
Consumer and other loans	2,835.1	2,596.7
U.S. government agency RMBS
Securitization Vehicles [Line Items]
Retained Interests	6.0	4.0
U.S. government agency CMBS
Securitization Vehicles [Line Items]
Retained Interests	1.1	1.1
CLOs
Securitization Vehicles [Line Items]
Retained Interests	50.3	436.6
Consumer and other loans
Securitization Vehicles [Line Items]
Retained Interests	$ 108.7	$ 104.9

X

- Definition

Represents unpaid principal amount of assets in commercial mortgage backed securitization vehicles at the balance sheet date.

+ References

No definition available.

+ Details

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X

- Definition

Collateralized Loan Obligations Securitization Assets

+ References

No definition available.

+ Details

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X

- Definition

Other Securitization Assets

+ References

No definition available.

+ Details

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X

- Definition

Represents unpaid principal amount of assets in residential mortgage backed securitization vehicles at the balance sheet date.

+ References

No definition available.

+ Details

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X

- Definition

Securitization vehicles.

+ References

No definition available.

+ Details

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X

- Definition

Fair value portion of interest continued to be held by a transferor after transferring financial assets to a third party.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

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- Details

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- Details

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- Details

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