Summary of Significant Accounting Policies (Details 6) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Jun. 30, 2014
Intangible Assets:
Amortization expense	$ 0.6us-gaap_AmortizationOfIntangibleAssets	$ 0.7us-gaap_AmortizationOfIntangibleAssets	$ 1.9us-gaap_AmortizationOfIntangibleAssets	$ 7.4us-gaap_AmortizationOfIntangibleAssets
Gross Carrying Amount	37.4		37.4		37.4
Accumulated Amortization	(15.6)		(15.6)		(13.7)
Net Carrying Value	21.8us-gaap_FiniteLivedIntangibleAssetsNet		21.8us-gaap_FiniteLivedIntangibleAssetsNet		23.7us-gaap_FiniteLivedIntangibleAssetsNet
Impairment	0	0	0	5.2
Asset Impairment Charges	0us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges
Future amortization of intangible assets
2015	0.7		0.7
2016	2.5		2.5
2017	1.9		1.9
2018	1.9		1.9
2019	1.9		1.9
Thereafter	12.9		12.9
Trade Names
Intangible Assets:
Gross Carrying Amount	17.5		17.5		17.5
Accumulated Amortization	(5.3)		(5.3)		(4.6)
Net Carrying Value	12.2		12.2		12.9
Customer Relationships
Intangible Assets:
Gross Carrying Amount	18.2		18.2		18.2
Accumulated Amortization	(8.9)		(8.9)		(7.7)
Net Carrying Value	9.3		9.3		10.5
Developed Technology Rights
Intangible Assets:
Gross Carrying Amount	1.2		1.2		1.2
Accumulated Amortization	(1.2)		(1.2)		(1.2)
Other Intangible Assets
Intangible Assets:
Gross Carrying Amount	0.5		0.5		0.5
Accumulated Amortization	(0.2)		(0.2)		(0.2)
Net Carrying Value	$ 0.3		$ 0.3		$ 0.3

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_AmortizationOfIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

+ Details

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References