CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (1.4)us-gaap_ProfitLoss	$ 30.6us-gaap_ProfitLoss	$ 36.2us-gaap_ProfitLoss	$ 94.7us-gaap_ProfitLoss
Other comprehensive (loss) income, net of tax
Pension and postretirement benefits, net of tax of $(1.8), $(2.2), $(5.5) and $(6.4), respectively	3.0	3.7	8.9	11.2
Net (loss) gain on derivative instruments, net of tax of $8.0, $(12.3), $23.4 and $(15.9), respectively	(13.2)	20.5	(38.7)	26.5
Unrealized gain on marketable securities, net of tax of $0.0, $0.0, $0.0 and $0.0, respectively	0	0	0	0.1
Foreign currency translation	(9.9)	(1.0)	(27.9)	3.9
Other comprehensive (loss) income	(20.1)	23.2	(57.7)	41.7
Comprehensive (loss) income	$ (21.5)	$ 53.8	$ (21.5)	$ 136.4

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 10A

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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The change in other comprehensive income during the reporting period, net of tax, for an item that is not separately disclosed.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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