Foreign Exchange Forward Contracts (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Derivative [Line Items]
Foreign currency transaction realized gains (losses)	$ (1.0)	$ (1.5)	$ (0.9)
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional principal amount of forward foreign currency contracts		$ 7.6
Not Designated as Hedging Instrument | Forward Contracts
Derivative [Line Items]
Maximum maturities for contracts (in days)		60 days