Information Regarding Operations in Reportable Segments (Detail) - USD ($) $ in Thousands			3 Months Ended										4 Months Ended				12 Months Ended
		Jan. 14, 2017	Dec. 30, 2017	Oct. 07, 2017		Jul. 15, 2017	[1]	Dec. 31, 2016	Oct. 08, 2016	[1]	Jul. 16, 2016	[1]	Apr. 22, 2017		Apr. 23, 2016	[1]	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Segment Reporting Information [Line Items]
Sales			$ 873,623	$ 932,822	[1]	$ 926,639		$ 868,717	$ 918,791		$ 935,025		$ 1,187,649	[1]	$ 1,204,352		$ 3,920,733	$ 3,926,885	$ 3,778,505
Gain on divestiture		$ 28,875											$ 28,875				28,875
Multi-employer pension plan withdrawal costs				18,268													18,268
Restructuring and related impairment charges			$ 3,581	$ 100,549													104,130
Impairment of assets								$ 24,877										24,877	3,771
Depreciation and amortization																	146,719	140,869	132,175
Income from operations																	162,912	263,890	297,879
Interest expense																	36,557	34,905	26,815
Interest income																	(22,938)	(20,552)	(21,967)
Income before income taxes																	149,293	249,537	293,031
Capital expenditures																	75,232	101,727	90,773
Unallocated Corporate Costs
Segment Reporting Information [Line Items]
Restructuring and related impairment charges																	3,982
Depreciation and amortization	[2]																(408)	722	(360)
Income from operations	[3]																(94,495)	(55,070)	(59,748)
Capital expenditures	[4]																3,982	23,266	9,029
DSD Segment
Segment Reporting Information [Line Items]
Sales																	3,318,563	3,284,177	3,179,348
DSD Segment | Operating Segments
Segment Reporting Information [Line Items]
Sales																	3,383,564	3,347,616	3,242,482
Multi-employer pension plan withdrawal costs																	18,268
Restructuring and related impairment charges																	80,026
Impairment of assets																		24,877	3,771
Depreciation and amortization																	126,485	120,009	115,801
Income from operations																	202,669	260,495	302,361
Capital expenditures																	64,317	61,669	72,148
DSD Segment | Intersegment Eliminations
Segment Reporting Information [Line Items]
Sales																	(65,001)	(63,439)	(63,134)
Warehouse Segment
Segment Reporting Information [Line Items]
Sales																	602,170	642,708	599,157
Warehouse Segment | Operating Segments
Segment Reporting Information [Line Items]
Sales																	767,844	787,233	733,170
Gain on divestiture																	28,875
Restructuring and related impairment charges																	20,122
Depreciation and amortization																	20,642	20,138	16,734
Income from operations																	54,738	58,465	55,266
Capital expenditures																	6,933	16,792	9,596
Warehouse Segment | Intersegment Eliminations
Segment Reporting Information [Line Items]
Sales																	$ (165,674)	$ (144,525)	$ (134,013)

[1] As disclosed in Note 4, Financial Statement Revisions, the company reported cash receipts and payments for the repurchase and sale of territories and cash paid at issuance of notes receivable at net when these transactions should have been disaggregated. We concluded that the errors were not material to any of these prior periods that were impacted. The error resulted in an understatement of cash flows from operating activities and cash flows used in investing activities of $5.9 million, $12.1 million and $12.8 million, respectively, for the sixteen, twenty-eight, and forty week amounts included in the first, second, and third quarters of fiscal 2017, respectively.  These amounts will be revised upon subsequent presentation of these financial statements.

[2] Represents costs allocated to the company’s corporate head office.

[3] Represents costs allocated to the company’s corporate head office and pension settlement loss.

[4] Represents the company’s corporate head office assets including primarily cash and cash equivalents.