Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended												12 Months Ended
	Sep. 29, 2012	Jun. 23, 2012	Mar. 24, 2012	Dec. 24, 2011	Sep. 24, 2011	Jun. 25, 2011	Mar. 26, 2011	Dec. 25, 2010	Sep. 25, 2010	Jun. 26, 2010	Mar. 27, 2010	Dec. 26, 2009	Sep. 29, 2012 item	Sep. 24, 2011	Sep. 25, 2010
Segment Reporting
Number of operating segments													3
Segment Reporting
Sales to unaffiliated customers	$ 946,736	$ 869,194	$ 885,052	$ 1,158,216	$ 711,883	$ 717,210	$ 647,658	$ 574,148	$ 373,087	$ 316,583	$ 321,953	$ 345,152	$ 3,859,198	$ 2,650,899	$ 1,356,775
Net sales													3,859,198	2,650,899	1,356,775
Income before taxes													576,141	302,747	133,209
Total assets	3,615,789				3,197,887				1,370,574				3,615,789	3,197,887	1,370,574
Stock compensation													17,868	10,361	7,949
Interest expense													22,983	57,657	5,294
Property additions													498,260	290,311	133,957
Depreciation and amortization													181,647	113,636	44,457
SCBU
Segment Reporting
Increase (decrease) in income before taxes													36,332	15,473
Reassignment of Timothy's goodwill													(17,063)
Sales to unaffiliated customers													1,550,347	963,731	571,630
Intersegment sales													9,785	442,970	254,746
Net sales													1,560,132	1,406,701	826,376
Income before taxes													371,279	249,916	104,900
Total assets	1,507,852				1,354,567				795,215				1,507,852	1,354,567	795,215
Stock compensation													4,211	3,186	2,556
Property additions													364,514	209,412	95,060
Depreciation and amortization													85,433	44,055	22,689
KBU
Segment Reporting
Increase (decrease) in income before taxes													(1,072)	(35,471)
Sales to unaffiliated customers													1,683,327	1,188,701	699,246
Intersegment sales													13,226	165,300	166,615
Net sales													1,696,553	1,354,001	865,861
Income before taxes													153,186	126,198	75,737
Total assets	972,276				622,254				417,802				972,276	622,254	417,802
Stock compensation													3,597	2,333	2,092
Property additions													47,835	34,759	20,514
Depreciation and amortization													13,817	10,970	7,713
CBU
Segment Reporting
Increase (decrease) in income before taxes													(645)	(7,251)
Reassignment of Timothy's goodwill													17,063
Sales to unaffiliated customers													625,524	498,467	85,899
Intersegment sales													100,340	98,347	34,274
Net sales													725,864	596,814	120,173
Income before taxes													116,898	72,860	11,287
Total assets	1,167,736				1,283,883				150,818				1,167,736	1,283,883	150,818
Stock compensation													1,890	470	23
Property additions													42,359	26,447	2,446
Depreciation and amortization													59,735	45,193	7,188
Corporate
Segment Reporting
Income before taxes													(65,222)	(121,036)	(44,133)
Total assets	574,031				476,613				70,240				574,031	476,613	70,240
Stock compensation													8,170	4,372	3,278
Interest expense													22,983	57,657	5,294
Property additions													43,552	19,693	15,937
Depreciation and amortization													22,662	13,418	6,867
Eliminations
Segment Reporting
Increase (decrease) in income before taxes													(34,615)	27,249
Intersegment sales													(123,351)	(706,617)	(455,635)
Net sales													(123,351)	(706,617)	(455,635)
Income before taxes														(25,191)	(14,582)
Total assets	$ (606,106)				$ (539,430)				$ (63,501)				$ (606,106)	$ (539,430)	$ (63,501)