Collateralized Transaction (Tables)

12 Months Ended

Nov. 30, 2011

Collateralized Transactions [Abstract]

Fair value of securities received as collateral

Carrying amount:
Securities purchased under agreements to resell	$	2,893,043
Securities borrowed		5,169,689
Securities received as collateral		21,862
Total assets on Consolidated Statement of Financial Condition		8,084,594
Netting of securities purchased under agreements to resell		7,498,439	(1)
		15,583,033
Fair value of collateral received in excess of contract amount		2,386,921	(2)
Fair value of securities received as collateral	$	17,969,954

(1) Represents the netting of securities purchased under agreements to resell with securitie sold under agreements to repurchase balances for the same counterparty under legally enforceable netting agreements.

(2) Includes collateral received from customers for margin balances unrelated to arrangements for securities purchased under agreements to resell or securities borrowed.