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Goodwill and Intangible Assets - Narrative (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jul. 28, 2013
Jul. 29, 2012
Jul. 28, 2013
Jul. 29, 2012
Goodwill and Intangible Assets [Line Items]        
Increase in finite-lived intangible assets     $ 5.3  
Amortization expense related to finite-lived intangible assets 7.2 8.0 15.1 12.9
Decrease in indefinite-lived intangible assets     (5.0)  
Impairment of indefinite-lived intangible assets $ 2.6