Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 28, 2013	Jun. 29, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 0	$ 0
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Income before allocations to partners	320,919	277,527
Depreciation and amortization	40,570	40,917
Changes in assets and liabilities:
Cash and investments segregated under federal regulations	(72,462)	(884,604)
Securities purchased under agreements to resell	332,743	(70,559)
Net payable to clients	(309,522)	567,541
Net receivable from brokers, dealers and clearing organizations	61,737	13,638
Receivable from mutual funds, insurance companies and other	(68,430)	(26,699)
Securities owned, net	(10,315)	(53,627)
Other assets	(2,593)	9,284
Accrued compensation and employee benefits	(68,172)	(39,049)
Accounts payable and accrued expenses	93,453	(7,581)
Net cash provided by (used in) operating activities	317,928	(173,212)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of equipment, property and improvements, net	(46,174)	(14,929)
Net cash used in investing activities	(46,174)	(14,929)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of long-term debt	(527)	(490)
Repayment of subordinated liabilities	(50,000)	(50,000)
Issuance of partnership interests (net of partnership loans)	38,205	40,942
Redemption of partnership interests	(107,194)	(83,358)
Distributions from partnership capital	(361,251)	(295,480)
Issuance of partnership loans	(11,203)
Repayment of partnership loans	44,340	7,696
Net cash used in financing activities	(447,630)	(380,690)
Net decrease in cash and cash equivalents	(175,876)	(568,831)
CASH AND CASH EQUIVALENTS:
Beginning of period	600,936	819,506
End of period	425,060	250,675
Cash paid for interest	30,283	32,089
Cash paid for taxes	5,997	3,422
NON-CASH ACTIVITIES:
Additions of equipment, property and improvements in accounts payable and accrued expenses	1,064	81
Issuance of general partnership interests through partnership loans in current period	$ 94,025	$ 94,098