Collateralized Transactions - Fair Value of Securities Received as Collateral (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013	Nov. 30, 2012
Collateralized Securities Transactions [Line Items]
Securities received as collateral	$ 45,100	$ 0
Fair value of securities received as collateral	21,363,355	21,118,800
Successor [Member]
Collateralized Securities Transactions [Line Items]
Securities purchased under agreements to resell	4,420,886
Securities borrowed	5,316,449
Securities received as collateral	45,133
Total assets on Consolidated Statement of Financial Condition	9,782,468
Netting of securities purchased under agreements to resell	8,481,994
Total	18,264,462
Fair value of additional collateral received	3,098,873
Fair value of securities received as collateral	21,363,335
Predecessor [Member]
Collateralized Securities Transactions [Line Items]
Securities purchased under agreements to resell		3,357,602
Securities borrowed		5,094,679
Total assets on Consolidated Statement of Financial Condition		8,452,281
Netting of securities purchased under agreements to resell		9,982,752
Total		18,435,033
Fair value of additional collateral received		2,683,767
Fair value of securities received as collateral		$ 21,118,800

The carrying value as of the balance sheet date of securities borrowed from broker-dealers or institutions (a) to deliver them in place of securities not available because of short-sales or late or ineffective deliveries; (b) to lend them in connection with finder or conduit transactions; and (c) to be used for other purposes permitted under federal regulations.

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The carrying value of funds outstanding loaned in the form of security resale agreements if the agreement requires the purchaser to resell the identical security purchased or a security that meets the definition of "substantially the same." Also includes purchases of participations in pools of securities that are subject to a resale agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

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-Name FASB Interpretation (FIN)

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- Definition

The carrying value as of the balance sheet date of the assets received as collateral against securities loaned to other broker-dealers. Borrowers of securities generally are required to provide collateral to the lenders of securities, commonly cash but sometimes other securities or standby letters of credit, with a value slightly higher than that of the securities borrowed. In instances where the entity is permitted to sell or re-pledge these securities, the entity reports the fair value of the collateral received and the related obligation to return the collateral as a liability.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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