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Stock-Based Compensation - 2012 Stock Option Plan and 2012 Stock Incentive Plan - Additional Information (Detail) (2012 Stock Option Plan and 2012 Stock Incentive Plan [Member], USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
May 03, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Numbers of options outstanding 6,134,091
Options outstanding, weighted-average exercise price per share $ 47.15
Numbers of options vested 5,599,966
Vested weighted-average exercise price per share $ 46.18
Aggregate intrinsic value of options outstanding $ 112.5
Aggregate intrinsic value of options vested or expected to vest 112.1
Aggregate intrinsic value of options exercisable 108.2
Weighted-average remaining contractual life of options exercisable 8 years 6 months 26 days
Vested restricted stock unit awards 6,249
Straight-line [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation expense related to unvested options 9.4
Unrecognized compensation expense with weighted-average period 3 years 10 months 24 days
Restricted Stock Awards [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vested weighted-average exercise price per share $ 38.36
Unrecognized compensation expense related to unvested options $ 17.1
Unrecognized compensation expense with weighted-average period 3 years 6 months 15 days
Restricted stock awards outstanding 377,819
Restricted stock awards outstanding with weighted-average grant date fair value per share $ 64.01