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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 6 Months Ended
Aug. 02, 2014
Aug. 02, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Numbers of options outstanding 7,067,635 7,067,635
Options outstanding, weighted-average exercise price per share $ 49.88 $ 49.88
Numbers of options vested   5,496,310
Vested weighted-average exercise price per share   $ 46.85
Aggregate intrinsic value of options outstanding $ 228.1 $ 228.1
Aggregate intrinsic value of options vested or expected to vest 224.4 224.4
Aggregate intrinsic value of options exercisable 194.0 194.0
Weighted-average remaining contractual life of options exercisable   8 years 4 months 17 days
Vested restricted stock and restricted stock unit awards 34,779 41,028
Straight-line [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation expense related to unvested options 30.5 30.5
Unrecognized compensation expense with weighted-average period   4 years 4 months 28 days
Restricted Stock [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vested weighted-average exercise price per share $ 62.43 $ 58.76
Unrecognized compensation expense related to unvested options $ 37.3 $ 37.3
Unrecognized compensation expense with weighted-average period   4 years 1 month 24 days
Restricted stock unit awards outstanding 759,640 759,640
Restricted stock unit awards outstanding with weighted-average grant date fair value per share   $ 63.62