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Share-Based Compensation (RSUs Activity) (Details) (Restricted Stock Units (RSUs), USD $)
9 Months Ended
Nov. 01, 2014
Performance and Service Conditions
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 15 months
Restricted Stock Unit Activity, Number of Underlying Shares  
Number of Underlying Shares, Beginning Balance 1,426,579
Number of Underlying Shares, Granted 632,925 [1]
Number of Underlying Shares, Vested (352,359)
Number of Underlying Shares, Forfeited (211,931)
Number of Underlying Shares, Ending Balance 1,495,214
Restricted Stock Unit Activity, Weighted-Average Grant Date Fair Value  
Weighted-Average Grant Date Fair Value, Beginning Balance $ 46.00
Granted, Weighted-Average Grant Date Fair Value $ 34.75
Vested, Weighted-Average Grant Date Fair Value $ 48.32
Forfeited, Weighted-Average Grant Date Fair Value $ 44.04
Weighted-Average Grant Date Fair Value, Ending Balance $ 40.35
Performance and Service Conditions | Minimum
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Target percentage of equity awards earned 0.00%
Performance and Service Conditions | Maximum
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Target percentage of equity awards earned 200.00%
Performance Vesting Conditions
 
Restricted Stock Unit Activity, Number of Underlying Shares  
Number of Underlying Shares, Granted 158,922
Market Conditions
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 11 months
Restricted Stock Unit Activity, Number of Underlying Shares  
Number of Underlying Shares, Beginning Balance 0
Number of Underlying Shares, Granted 79,458 [2]
Number of Underlying Shares, Vested 0
Number of Underlying Shares, Forfeited (1,666)
Number of Underlying Shares, Ending Balance 77,792
Restricted Stock Unit Activity, Weighted-Average Grant Date Fair Value  
Weighted-Average Grant Date Fair Value, Beginning Balance $ 0.00
Granted, Weighted-Average Grant Date Fair Value $ 45.02
Vested, Weighted-Average Grant Date Fair Value $ 0.00
Forfeited, Weighted-Average Grant Date Fair Value $ 46.86
Weighted-Average Grant Date Fair Value, Ending Balance $ 44.98
Market Conditions | Minimum
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Target percentage of equity awards earned 0.00%
Market Conditions | Maximum
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Target percentage of equity awards earned 200.00%
[1] Includes 158,922 shares, which represents "target performance," related to grants of restricted stock units with performance vesting conditions at their targeted vesting amount. The number of shares that ultimately vest can vary from 0% - 200% of target depending on the level of achievement of performance criteria.
[2] Reflects the target vesting amount granted. However, the number of shares that ultimately vest can vary from 0% - 200% of target depending on market performance.