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Share-Based Compensation (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Aug. 02, 2014
Aug. 03, 2013
Aug. 02, 2014
Aug. 03, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 6.1 $ 13.6 $ 11.4 $ 27.0
Tax benefit recognized related to share-based compensation expense 2.3 5.2 4.3 10.2
Stock Appreciation Rights (SARs)
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total unrecognized compensation cost, net of estimated forfeitures 11.2   11.2  
Total intrinsic value of awards exercised     1.5 8.5
Grant date fair value of award other than options vested during the period     7.2 19.7
Performance and Service Conditions | Stock Appreciation Rights (SARs)
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost, weighted-average period of recognition     16 months  
Performance and Service Conditions | Restricted Stock Units (RSUs)
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total unrecognized compensation cost, net of estimated forfeitures 36.4   36.4  
Unrecognized compensation cost, weighted-average period of recognition     16 months  
Grant date fair value of award other than options vested during the period     16.4 14.0
Fair value of awards granted during the period     20.9 27.9
Market Conditions | Restricted Stock Units (RSUs)
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total unrecognized compensation cost, net of estimated forfeitures 3.0   3.0  
Unrecognized compensation cost, weighted-average period of recognition     13 months  
Fair value of awards granted during the period     $ 3.6