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Recent Accounting Pronouncements - Additional Information (Detail) - USD ($)
$ in Thousands
 4 Months Ended
Apr. 20, 2019
Dec. 30, 2018
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Cumulative-effect adjustment to retained earnings, net of tax $ (2,915)  
Right-of-use assets for operating leases 377,484 $ 387,300
Lease liabilities for operating leases 381,133 $ 391,900
Right-of-use assets for financing leases 24,898  
Right-of-use liabilities for financing leases 28,855  
Property, Plant and Equipment    
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Right-of-use assets for operating leases 21,900  
Lease liabilities for operating leases 21,900  
ASU 2016-02    
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Cumulative-effect adjustment to retained earnings, net of tax 2,900  
Right-of-use assets for financing leases 19,800  
Right-of-use liabilities for financing leases $ 23,600