Consolidated Statements of Financial Condition (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2012	Dec. 31, 2011
ASSETS:
Cash and cash equivalents	$ 250,675	$ 819,506
Cash and investments segregated under federal regulations	5,357,130	4,472,526
Securities purchased under agreements to resell	747,007	676,448
Receivable from:
Clients	2,338,616	2,353,308
Brokers, dealers and clearing organizations	126,290	103,805
Mutual funds, insurance companies and other	326,706	300,007
Securities owned, at fair value:
Inventory securities	124,151	74,666
Investment securities	106,524	104,502
Equipment, property and improvements, at cost, net of accumulated depreciation and amortization	554,741	579,439
Other assets	90,095	99,379
TOTAL ASSETS	10,021,935	9,583,586
Payable to:
Clients	7,279,939	6,727,090
Brokers, dealers and clearing organizations	116,370	80,247
Securities sold, not yet purchased, at fair value	5,466	7,586
Accrued compensation and employee benefits	501,367	540,416
Accounts payable and accrued expenses	159,679	165,970
Long-term debt	6,010	6,500
Liabilities subordinated to claims of general creditors	8,068,831	7,527,809
Liabilities subordinated to claims of general creditors	100,000	150,000
Contingencies (Note 8)
Partnership capital subject to mandatory redemption, net of reserve for anticipated withdrawals	1,772,012	1,758,365
Reserve for anticipated withdrawals	81,092	147,412
Total partnership capital subject to mandatory redemption	1,853,104	1,905,777
TOTAL LIABILITIES	$ 10,021,935	$ 9,583,586