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Merger, Restructuring and Other Accruals - Additional Information (Detail)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 27, 2015
USD ($)
Jun. 28, 2014
USD ($)
Jun. 27, 2015
USD ($)
Store
Jun. 28, 2014
USD ($)
Merger Restructuring And Other Operating Expenses [Line Items]        
Number of retail stores expected to be closed through 2016 | Store     400  
Number of retail stores expected to be closed in 2015 | Store     175  
Gain on sale of warehouse facility classified as an asset held for sale     $ 19  
Merger, restructuring, and other operating expenses, net $ 120 $ 103 163 $ 204
Charges Incurred     112  
Merger, restructuring and other operating expenses other than liabilities     51  
Merger transaction and integration expenses 29 38 53 59
Transaction and integration expenses 2 $ 4 $ 4 $ 5
Minimum        
Merger Restructuring And Other Operating Expenses [Line Items]        
Number of retail stores expected to be closed in 2016 | Store     60  
European restructuring plan        
Merger Restructuring And Other Operating Expenses [Line Items]        
Anticipated restructuring expenses for the remainder of 2015 $ 36   $ 36  
Transaction and integration expenses     4  
Merger, Restructuring and Other Operating Expenses, Net        
Merger Restructuring And Other Operating Expenses [Line Items]        
Gain on sale of warehouse facility classified as an asset held for sale     19  
Charges Incurred     112  
Staples, Inc.        
Merger Restructuring And Other Operating Expenses [Line Items]        
Transaction and integration expenses     $ 13