Collateralized Transactions - Collateral Pledged (Details) - USD ($) $ in Thousands	Feb. 29, 2024	Nov. 30, 2023
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities Lending Arrangements	$ 2,709,170	$ 1,840,518
Repurchase Agreements	17,212,651	19,841,194
Obligation to Return Securities Received as Collateral, at Fair Value	110,897	8,800
Total	20,032,718	21,690,512
Corporate equity securities
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities Lending Arrangements	2,056,981	1,221,456
Repurchase Agreements	568,495	627,029
Obligation to Return Securities Received as Collateral, at Fair Value	49,890	4,347
Total	2,675,366	1,852,832
Corporate debt securities
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities Lending Arrangements	579,817	576,449
Repurchase Agreements	5,047,768	4,297,933
Obligation to Return Securities Received as Collateral, at Fair Value	0	0
Total	5,627,585	4,874,382
Mortgage-backed and asset-backed securities
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities Lending Arrangements	0	0
Repurchase Agreements	1,364,689	1,950,908
Obligation to Return Securities Received as Collateral, at Fair Value	0	0
Total	1,364,689	1,950,908
U.S. government and federal agency securities
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities Lending Arrangements	45,930	39,151
Repurchase Agreements	7,107,197	9,474,205
Obligation to Return Securities Received as Collateral, at Fair Value	1,736	3,429
Total	7,154,863	9,516,785
Municipal securities
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities Lending Arrangements	0	0
Repurchase Agreements	110,738	141,091
Obligation to Return Securities Received as Collateral, at Fair Value	0	0
Total	110,738	141,091
Sovereign obligations
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities Lending Arrangements	26,442	3,462
Repurchase Agreements	2,265,539	2,511,560
Obligation to Return Securities Received as Collateral, at Fair Value	59,271	1,024
Total	2,351,252	2,516,046
Loans and other receivables
Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items]
Securities Lending Arrangements	0	0
Repurchase Agreements	748,225	838,468
Obligation to Return Securities Received as Collateral, at Fair Value	0	0
Total	$ 748,225	$ 838,468

Amount, after effect of master netting arrangement and deduction of obligation to return financial collateral not offset and financial instrument subject to master netting arrangement not offset, of derivative liability, security sold under agreement to repurchase, and security loaned. Includes liability not subject to master netting arrangement or similar agreement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 55
-Paragraph 13
-SubTopic 20
-Topic 210
-Publisher FASB
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Amount, before effects of master netting arrangements, of financial assets loaned to entities in exchange for collateral and funds outstanding borrowed in the form of a financial asset repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same financial assets at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
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Amount, before effects of master netting arrangements, of financial assets loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and financial assets transferred other than securities that qualify as secured borrowings.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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