Collateralized Transaction (Tables)

3 Months Ended

Feb. 29, 2012

Collateralized Transactions [Abstract]

Fair value of securities received as collateral

	February 29, 2012		November 30, 2011
Carrying amount:
Securities purchased under agreements to resell	$	4,434,611	$	2,893,043
Securities borrowed		5,036,447		5,169,689
Securities received as collateral		984		21,862
Total assets on Consolidated Statement of Financial Condition		9,472,042		8,084,594
Netting of securities purchased under agreements to resell(1)		8,129,978		7,498,439
		17,602,020		15,583,033
Fair value of collateral received in excess of contract amount(2)		971,817		2,386,921
Fair value of securities received as collateral	$	18,573,837	$	17,969,954

(1) Represents the netting of securities purchased under agreements to resell with securities 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.