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Associate Retirement Plans - Additional Information (Detail) - USD ($)
 12 Months Ended
Feb. 28, 2018
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]        
Defined contribution plans expense   $ 7,000,000 $ 7,900,000 $ 11,900,000
Cash surrender value of plan assets included in other long term assets   84,182,000 138,193,000  
Aggregate amount of life insurance coverage   15,000,000    
Distribution charges   $ 3,300,000 2,600,000 2,800,000
Defined contribution plan employees minimum period of service   10 years    
Defined contribution plan employees age to eligible under the plan   55 years    
Maximum age of major medical insurance with deductible and coinsurance provisions   65 years    
Multiplier effect of Monthly postretirement health care benefits to covered employees   $ 5    
Actuarial gains and losses are amortized when accumulation of such gains and losses exceeds   10.00%    
Multiemployer plans, certified zone status   Red    
Critical and declining zone fund status   Less than 65 percent    
Michigan Conference of Teamsters and Ohio Conference of Teamsters Health and Welfare Plans [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Pension contributions during last plan year   $ 13,800,000 14,100,000 14,300,000
Central States, Southeast and Southwest Areas Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Pension contributions during last plan year   $ 13,300,000 13,400,000 13,400,000
Expiration dates of collective bargaining arrangements   Feb. 28, 2022    
Collective bargaining arrangement description   The Company is party to four CBAs that require contributions to the Plan with expiration dates ranging from April 2019 to January 2022 or which the Company is in the process of negotiating and have a contemplated expiration date of February 2022. These CBAs cover warehouse personnel and drivers in Grand Rapids, Michigan and Bellefontaine and Lima, Ohio.    
Maximum [Member]        
Defined Benefit Plan Disclosure [Line Items]        
1% increase or decrease in assumed health care cost trend rate in accumulated postretirement benefit obligation   $ 100,000    
Status or critical and declining zone plans   65.00%    
Projected insolvent period based on active to inactive participants ratio.   20 years    
Maximum [Member] | Central States, Southeast and Southwest Areas Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Expiration dates of collective bargaining arrangements   Jan. 31, 2022    
Percentage representing contribution funded to plan total contribution   5.00%    
Minimum [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Projected insolvent period based on active to inactive participants ratio.   15 years    
Minimum [Member] | Central States, Southeast and Southwest Areas Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Expiration dates of collective bargaining arrangements   Apr. 30, 2019    
Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Frozen pension plan, termination date   Jul. 31, 2018    
Settlement accounting charges   $ 785,000 548,000 $ 692,000
Pension Plan [Member] | Maximum [Member]        
Defined Benefit Plan Disclosure [Line Items]        
One-time, pre-tax settlement charge $ 21,000,000      
Expected Company contribution in 2019   500,000    
Pension Plan [Member] | Minimum [Member]        
Defined Benefit Plan Disclosure [Line Items]        
One-time, pre-tax settlement charge $ 20,000,000      
Expected Company contribution in 2019   $ 0    
Cash Balance Pension Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Average long-term expected return on pension plan assets   2.80%    
Retiree Medical Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Expected Company contribution in 2019   $ 400,000    
Cash Surrender Value [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Cash surrender value of plan assets included in other long term assets   $ 4,300,000 $ 4,300,000