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Earnings Per Share (EPS) (Schedule of Stock-Based Awards Excluded from Weighted Average Shares Outstanding) (Detail) - shares
shares in Millions
3 Months Ended 9 Months Ended
Oct. 02, 2015
Oct. 31, 2014
Oct. 31, 2014
Stock options and Vesting Stock Awards      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive stock based awards 2    
Stock Options      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive stock based awards   2 4
Vesting Stock Awards      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive stock based awards     3