Commitments and Contingencies - Additional Information - General Litigation (Detail)  | 
 Jan. 28, 2017  
Lawsuits 
 | 
|---|---|
| Commitments and Contingencies Disclosure [Abstract] | |
| Putative employment class action lawsuits | 3 | 
| X | ||||||||||
- Definition Number Of Lawsuits No definition available. 
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| X | ||||||||||
- References No definition available. 
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