Schedule of Restructuring Impairments Recognized by Segment (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 29, 2018	Dec. 30, 2017
Restructuring Cost And Reserve [Line Items]
Total impairment of assets	[1]	$ 9,767	$ 104,130
Impairment of Assets
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		5,593
Impairment of Assets | Plant Closure Costs
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		3,337
Impairment of Assets | Line Closure costs
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		718
Impairment of Assets | Product Rationalization Costs
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		1,538
Impairment of Assets | DSD Segment
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		4,288
Impairment of Assets | DSD Segment | Plant Closure Costs
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		3,133
Impairment of Assets | DSD Segment | Product Rationalization Costs
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		1,155
Impairment of Assets | Warehouse Segment
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		1,305
Impairment of Assets | Warehouse Segment | Plant Closure Costs
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		204
Impairment of Assets | Warehouse Segment | Line Closure costs
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		718
Impairment of Assets | Warehouse Segment | Product Rationalization Costs
Restructuring Cost And Reserve [Line Items]
Total impairment of assets		$ 383

[1] Presented on our Consolidated Statements of Income.