Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Stock Options Activity) (Details)

v3.3.1.900
Stock-Based Compensation (Stock Options Activity) (Details)
$ / shares in Units, shares in Thousands
12 Months Ended
Jan. 30, 2016
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Outstanding stock options, beginning balance | shares 14,575
Stock Options, Granted | shares 5,119
Stock Options, Exercised | shares (4)
Stock Options, Forfeited/canceled | shares (3,594)
Outstanding stock options, ending balance | shares 16,096
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]  
Weighted-Average Exercise Price Per Share, beginning balance | $ / shares $ 32
Weighted-Average Exercise Price Per Share, Granted | $ / shares 8
Weighted-Average Exercise Price Per Share, Exercised | $ / shares 8
Weighted-Average Exercise Price Per Share, Forfeited/canceled | $ / shares 32
Weighted-Average Exercise Price Per Share, ending balance | $ / shares $ 24
Weighted-Average Remaining Contractual Term, Outstanding 5 years 2 months
Aggregate Intrinsic Value, Outstanding | $ $ 100,000.0 [1]
Stock Options, Exercisable | shares 9,170
Weighted-Average Exercise Price Per Share, Exercisable | $ / shares $ 36
Weighted-Average Remaining Contractual Term, Exercisable 2 years 9 months
[1] The intrinsic value of a stock option is the amount by which the market value of the underlying stock exceeds the exercise price of the option at year end.