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SHAREHOLDERS' EQUITY Share Repurchase Program (Details) (USD $)
In Millions, except Share data, unless otherwise specified
6 Months Ended
Oct. 30, 2011
Sep. 30, 2011
Jun. 30, 2011
Equity, Class of Treasury Stock [Line Items]      
Stock Repurchase Program, Initial Authorized Amount     $ 150.0
Stock Repurchase Program, Authorized Period     24 months
Stock Repurchase Program, Increase to Authorized Amount   100.0  
Stock Repurchased and Retired During Period, Shares 5,515,377    
Stock Repurchased and Retired During Period, Value $ 110.6