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STOCKHOLDERS' EQUITY (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Share Repurchase Plan    
Shares repurchased during the period under share purchase plan 2.7 2.3
Aggregate cost of repurchase under share purchase plan $ 122.6 $ 81.6
Remaining authorized amount available under the plan for repurchase in future periods $ 94.6