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Unfavorable Leases Estimated Future Amortization (Detail)
$ in Millions
Dec. 26, 2015
USD ($)
Unfavorable Lease [Line Items]  
Unfavorable leases estimated future amortization $ 18
2016  
Unfavorable Lease [Line Items]  
Unfavorable leases estimated future amortization 7
2017  
Unfavorable Lease [Line Items]  
Unfavorable leases estimated future amortization 5
2018  
Unfavorable Lease [Line Items]  
Unfavorable leases estimated future amortization 3
2019  
Unfavorable Lease [Line Items]  
Unfavorable leases estimated future amortization 1
2020  
Unfavorable Lease [Line Items]  
Unfavorable leases estimated future amortization 1
Thereafter  
Unfavorable Lease [Line Items]  
Unfavorable leases estimated future amortization $ 1