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Cash And Equivalents (Textuals) (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Oct. 27, 2012
Jan. 28, 2012
Oct. 27, 2012
Maximum [Member]
Restricted Cash and Cash Equivalents Items [Line Items]      
Maturity period on deposit amounts     3 months
Restricted cash balance $ 29.6 $ 30.0