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Postretirement Plans - Additional Information (Detail) - USD ($)
 3 Months Ended 4 Months Ended 6 Months Ended
Oct. 05, 2019
Jul. 13, 2019
Jul. 14, 2018
Oct. 07, 2017
Apr. 20, 2019
Apr. 21, 2018
Jul. 13, 2019
Jul. 14, 2018
Pension and Other Postretirement Benefits Disclosure [Line Items]                
Defined benefit plans estimated final non-cash settlement charge   $ 125,000,000.0         $ 125,000,000.0  
Settlement charge     $ (1,035,000)       0 $ (5,703,000)
Voluntarily contributions made by an employer $ 2,500,000 0 $ 30,000,000.0   $ 0 $ 10,000,000.0    
Multiemployer plan, withdrawal obligation       $ 15,200,000        
Multiemployer plans, increase in withdrawal obligation           2,300,000    
Multiemployer plans transition payments payable   3,100,000         $ 3,100,000  
Multiemployer plans payable date             Nov. 03, 2017  
Multiemployer plan withdrawal liability of net present value monthly payments period       20 years        
Multiemployer plan, withdrawal obligation paid           $ 200,000    
Minimum                
Pension and Other Postretirement Benefits Disclosure [Line Items]                
Required cash contribution to fully fund under defined benefit plans   5,000,000.0         $ 5,000,000.0  
Maximum                
Pension and Other Postretirement Benefits Disclosure [Line Items]                
Required cash contribution to fully fund under defined benefit plans   $ 35,000,000.0         $ 35,000,000.0