Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2013	Jun. 29, 2012	Jun. 28, 2013	Jun. 29, 2012
Trade revenue
Commissions	$ 566,187	$ 479,983	$ 1,105,659	$ 960,604
Principal transactions	33,575	41,815	60,446	87,116
Investment banking	30,601	30,038	57,789	59,112
Total trade revenue	630,363	551,836	1,223,894	1,106,832
Fee revenue
Asset-based	616,960	494,636	1,187,287	976,965
Account and activity	140,388	143,462	279,082	284,030
Total fee revenue	757,348	638,098	1,466,369	1,260,995
Interest and dividends	33,356	33,344	65,815	65,652
Other revenue	10,666	6,960	26,316	19,205
Total revenue	1,431,733	1,230,238	2,782,394	2,452,684
Interest expense	15,053	15,752	30,216	31,876
Net revenue	1,416,680	1,214,486	2,752,178	2,420,808
Operating expenses:
Compensation and benefits	941,739	797,199	1,828,799	1,577,855
Occupancy and equipment	89,241	87,342	178,655	177,153
Communications and data processing	73,336	70,753	146,577	141,917
Payroll and other taxes	52,735	46,336	110,595	98,986
Advertising	13,582	12,982	30,219	25,524
Postage and shipping	13,773	11,966	26,710	24,347
Clearance fees	3,096	3,025	6,440	6,472
Other operating expenses	57,038	45,921	103,264	91,027
Total operating expenses	1,244,540	1,075,524	2,431,259	2,143,281
Income before allocations to partners	172,140	138,962	320,919	277,527
Allocations to partners:
Limited partners	19,975	18,056	37,314	36,166
Subordinated limited partners	18,850	15,400	35,354	31,068
General partners	133,315	105,506	248,251	210,293
Net income	$ 0	$ 0	$ 0	$ 0
Income before allocations to partners per weighted average $1,000 equivalent limited partnership unit outstanding	$ 30.92	$ 27.50	$ 57.64	$ 54.92
Weighted average $1,000 equivalent limited partnership units outstanding	646,022	656,582	647,363	658,521