Foreign Exchange Forward Contracts (Narratives) (Details) $ in Millions	12 Months Ended
Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($) Contract	Jun. 30, 2015 USD ($)
Derivative [Line Items]
Number of foreign currency forward contracts outstanding \| Contract		0
Foreign currency transaction realized gain (loss)	$ (0.7)	$ 1.3	$ (1.0)
Not Designated as Hedging Instrument \| Forward Foreign Currency Contracts
Derivative [Line Items]
Notional principal amount of forward foreign currency contracts	$ 6.7

Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=64836518&loc=d3e30690-110894

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64836518&loc=d3e30700-110894

Name:	us-gaap_ForeignCurrencyTransactionGainLossRealized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration