Collateralized Transactions - Contractual Maturity (Details) - USD ($) $ in Thousands	Nov. 30, 2019	Nov. 30, 2018
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities Lending Arrangements	$ 1,525,140	$ 1,838,688
Repurchase Agreements	18,756,917	17,193,486
Obligation To Return Securities Received As Collateral	9,500
Total	20,291,557	19,032,174
Overnight and Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities Lending Arrangements	694,821	807,347
Repurchase Agreements	6,614,026	7,849,052
Obligation To Return Securities Received As Collateral	0
Total	7,308,847	8,656,399
Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities Lending Arrangements	0	0
Repurchase Agreements	1,556,260	1,915,325
Obligation To Return Securities Received As Collateral	0
Total	1,556,260	1,915,325
31-90 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities Lending Arrangements	672,969	560,417
Repurchase Agreements	8,988,528	6,042,951
Obligation To Return Securities Received As Collateral	9,500
Total	9,670,997	6,603,368
Greater than 90 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities Lending Arrangements	157,350	470,924
Repurchase Agreements	1,598,103	1,386,158
Obligation To Return Securities Received As Collateral	0
Total	$ 1,755,453	$ 1,857,082

Amount, after effects of master netting arrangements, of derivative liabilities, securities sold under agreements to repurchase and securities loaned offset against a right to receive collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226016-175313

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 7
-Subparagraph (b)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 30
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-Paragraph 7
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729

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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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