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Subsequent Events (Details) - Subsequent event
$ in Millions
May 31, 2017
USD ($)
Store
Subsequent Event [Line Items]  
Anticipated annual savings $ 60
Minimum  
Subsequent Event [Line Items]  
Number of stores expected to close | Store 100
Restructuring charges $ 100
Maximum  
Subsequent Event [Line Items]  
Number of stores expected to close | Store 125
Restructuring charges $ 125