Information Regarding Operations in Reportable Segments (Detail) - USD ($) $ in Thousands		3 Months Ended						4 Months Ended		12 Months Ended
		Dec. 31, 2016	Oct. 08, 2016	Jul. 16, 2016	Jan. 02, 2016	Oct. 10, 2015	Jul. 18, 2015	Apr. 23, 2016	Apr. 25, 2015	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Segment Reporting Information [Line Items]
Sales		$ 868,717	$ 918,791	$ 935,025	$ 858,363	$ 885,302	$ 888,795	$ 1,204,352	$ 1,146,045	$ 3,926,885	$ 3,778,505	$ 3,748,973
Impairment of assets										24,877	3,771	10,308
Depreciation and amortization										140,869	132,175	128,961
Income (loss) from operations										263,890	297,879	275,395
Interest expense										34,905	26,815	28,288
Interest income										(20,552)	(21,967)	(20,947)
Income before income taxes										249,537	293,031	268,054
Capital expenditures										101,727	90,773	83,778
Other
Segment Reporting Information [Line Items]
Depreciation and amortization	[1]									722	(360)	(86)
Income (loss) from operations	[1]									(55,070)	(59,748)	(60,287)
Capital expenditures	[1]									23,266	9,029	3,856
DSD Segment
Segment Reporting Information [Line Items]
Sales										3,284,177	3,179,348	3,155,607
DSD Segment | Operating Segments
Segment Reporting Information [Line Items]
Sales										3,347,616	3,242,482	3,227,695
Impairment of assets										24,877	3,771	10,308
Depreciation and amortization										120,009	115,801	113,881
Income (loss) from operations										260,495	302,361	284,231
Capital expenditures										61,669	72,148	73,454
DSD Segment | Intersegment Eliminations
Segment Reporting Information [Line Items]
Sales										(63,439)	(63,134)	(72,088)
Warehouse Segment
Segment Reporting Information [Line Items]
Sales										642,708	599,157	593,366
Warehouse Segment | Operating Segments
Segment Reporting Information [Line Items]
Sales										787,233	733,170	723,541
Depreciation and amortization										20,138	16,734	15,166
Income (loss) from operations										58,465	55,266	51,451
Capital expenditures										16,792	9,596	6,468
Warehouse Segment | Intersegment Eliminations
Segment Reporting Information [Line Items]
Sales										$ (144,525)	$ (134,013)	$ (130,175)

[1] Represents the company’s corporate head office amounts, acquisition costs, and the fiscal 2016 and fiscal 2014 pension settlement losses.