Collateralized Transactions (Details) (USD $)	Nov. 30, 2011	Nov. 30, 2010
Carrying Amount [Abstract]
Securities purchased under agreements to resell	$ 2,893,043,000	$ 3,252,322,000
Securities borrowed	5,169,689,000	8,152,678,000
Securities received as collateral	21,862,000	48,616,000
Total assets on Consolidated Statement of Financial Condition	8,084,594,000
Netting of securities purchased under agreements to resell	7,498,439,000
Total	15,583,033,000
Fair value of collateral received in excess of contract amount	2,386,921,000
Fair value of securities received as collateral	17,969,954,000
Collateralized Transactions (Textual) [Abstract]
Fair value of securities received that can be sold or re pledged	19,800,000,000	22,300,000,000
Securities received as collateral and as obligation to return securities received as collateral	$ 21,900,000	$ 48,600,000

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Fair value of collateral received in excess of contract amount.

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Netting of securities purchased under agreements to resell.

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Securities net.

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- Definition

Fair value of securities received as collateral in connection with derivative transactions and in connection with certain securities for securities transactions in which we are the lender of securities, and an obligation to return these securities.

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No definition available.

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- Definition

This is the fair value as of the date of each statement of financial position presented of the collateral that is permitted, by contact or custom, to be sold or re-pledged.

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The fair value of federal funds sold and securities purchased under agreements to resell that serve as collateral for borrowings.

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- Definition

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 amount (fair value) as of the balance sheet date of securities held that had been pledged by counterparties under financing and lending arrangements, pursuant to which the entity has the right by agreement or custom to sell or re-pledge such securities.

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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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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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