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Merger and Restructuring Activity - Additional Information (Detail)
$ in Millions
 3 Months Ended 6 Months Ended 9 Months Ended
May 08, 2019
USD ($)
Store
DistributionCenterandSalesOffice
Sep. 28, 2019
USD ($)
Store
DistributionCenterandSalesOffice
Sep. 29, 2018
USD ($)
Jun. 30, 2018
USD ($)
Sep. 28, 2019
USD ($)
Store
Sep. 29, 2018
USD ($)
Business Acquisition [Line Items]            
Transaction and integration   $ 6 $ 5   $ 18 $ 16
Facility closure, contract termination, and other expenses, net     $ 2     10
Costs to implement restructuring plan         81  
Other restructuring costs   $ 4     15 1
Business Acceleration Program            
Business Acquisition [Line Items]            
Number of retail stores planned to be closed | Store 90          
Number of other facilities planned to be closed | DistributionCenterandSalesOffice 9          
Number of other facilities closed | DistributionCenterandSalesOffice   7        
Costs to implement restructuring plan $ 122 $ 16        
Expected restructuring cost, remainder of fiscal 2019 85          
Other restructuring costs   3     4  
Business Acceleration Program | Cash Expenditures through 2021            
Business Acquisition [Line Items]            
Costs to implement restructuring plan 110          
Business Acceleration Program | Employee Recruitment and Relocation Costs            
Business Acquisition [Line Items]            
Costs to implement restructuring plan 2          
Business Acceleration Program | Retail Store and Facility Closure Costs            
Business Acquisition [Line Items]            
Costs to implement restructuring plan 26 1     4  
Business Acceleration Program | Third-Party Costs            
Business Acquisition [Line Items]            
Costs to implement restructuring plan 46          
Business Acceleration Program | Other Costs            
Business Acquisition [Line Items]            
Costs to implement restructuring plan 8       34  
Business Acceleration Program | Severance cost            
Business Acquisition [Line Items]            
Costs to implement restructuring plan 40       40  
Expected restructuring cost paid   59     59  
Business Acceleration Program | Severance cost | Cash            
Business Acquisition [Line Items]            
Expected restructuring cost for fiscal 2019 $ 70          
Business Acceleration Program | Third-Party Professional Fees            
Business Acquisition [Line Items]            
Costs to implement restructuring plan         $ 31  
Business Acceleration Program | Professional Fees            
Business Acquisition [Line Items]            
Costs to implement restructuring plan   $ 12        
Comprehensive Business Review            
Business Acquisition [Line Items]            
Number of retail stores closed | Store   3     44  
Additional number of retail stores planned to be close | Store         10  
Comprehensive Business Review | Other Costs            
Business Acquisition [Line Items]            
Costs to implement restructuring plan         $ 5  
OfficeMax Merger            
Business Acquisition [Line Items]            
Transaction and integration       $ 5    
Facility closure, contract termination, and other expenses, net   $ 2       $ 5