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Derivative Instruments and Hedging Activities - Narrative 1 (Details) - Derivative Contract Type [Domain] - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Derivative Instruments and Hedging Activities (Textual) [Abstract]    
Recognize loss on outstanding derivatives in the next 12 months $ 2.4  
Gains or losses recognized in earnings due to ineffectiveness and excluded from effectiveness testing $ 0.0 $ 0.0