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Earnings (Loss) Per Share (EPS) (Schedule of Stock-Based Awards Excluded from Weighted Average Shares Outstanding) (Detail)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Oct. 31, 2014
Nov. 01, 2013
Oct. 31, 2014
Nov. 01, 2013
Stock Options
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive stock based awards 2 5 4 5
Vesting Stock Awards
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive stock based awards 0 3 3 3