Sales by Product Category in Each Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	4 Months Ended
	Apr. 20, 2013	Apr. 21, 2012
Segment Reporting Information [Line Items]
Sales	$ 1,130,810	$ 898,206
Branded Retail
Segment Reporting Information [Line Items]
Sales	611,797	464,805
Store Branded Retail
Segment Reporting Information [Line Items]
Sales	191,993	155,795
Non-Retail and Other
Segment Reporting Information [Line Items]
Sales	327,020	277,606
DSD
Segment Reporting Information [Line Items]
Sales	922,404	737,298
DSD | Branded Retail
Segment Reporting Information [Line Items]
Sales	565,206	434,603
DSD | Store Branded Retail
Segment Reporting Information [Line Items]
Sales	143,352	117,798
DSD | Non-Retail and Other
Segment Reporting Information [Line Items]
Sales	213,846	184,897
Warehouse Delivery
Segment Reporting Information [Line Items]
Sales	208,406	160,908
Warehouse Delivery | Branded Retail
Segment Reporting Information [Line Items]
Sales	46,591	30,202
Warehouse Delivery | Store Branded Retail
Segment Reporting Information [Line Items]
Sales	48,641	37,997
Warehouse Delivery | Non-Retail and Other
Segment Reporting Information [Line Items]
Sales	$ 113,174	$ 92,709