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Goodwill and Intangible Assets - Narrative (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Apr. 28, 2013
Apr. 29, 2012
Goodwill and Intangible Assets [Line Items]    
Increase in finite-lived intangible assets $ 5.1  
Amortization expense related to finite-lived intangible assets 7.9 4.9
Decrease in indefinite-lived intangible assets $ (5.0)