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FAIR VALUE MEASUREMENTS Fair Value and Carrying Value of Debt (Details) (USD $)
In Millions, unless otherwise specified
Jan. 29, 2012
May 01, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term Debt, Fair Value $ 2,245.4 $ 2,418.0
Long-term Debt $ 1,951.3 $ 2,094.7