Derivative Instruments and Hedging Activities - Narrative 1 (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Derivative Instruments and Hedging Activities (Textual) [Abstract]
Recognize income on outstanding derivatives in the next 12 months	$ 0.5
Gains or losses recognized in earnings due to ineffectiveness and excluded from effectiveness testing	0.0
Contracts Translated to U S Dollars [Member]
Additional Derivative Instruments and Hedging Activities (Textual) [Abstract]
Notional amount of the contracts translated into U.S. dollars	62.9	$ 75.3
Net Investment Hedging [Member]
Derivatives, Fair Value [Line Items]
Gain (Loss) on Derivative Used in Net Investment Hedge, Net of Tax	$ (0.7)	$ (4.5)