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Commitment and Contingencies - Summary of Expended Unconditional Purchase Obligation (Detail) $ in Millions	12 Months Ended
	Jun. 30, 2016 USD ($)
Recorded Unconditional Purchase Obligation [Line Items]
Total expended on unconditional purchase obligations	$ 48.6
Fiscal Year 2014 [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Total expended on unconditional purchase obligations	10.4
Fiscal Year 2015 [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Total expended on unconditional purchase obligations	10.9
Fiscal Year 2016 [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Total expended on unconditional purchase obligations	$ 27.3

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The amount purchased during the period under an unrecorded unconditional purchase obligation (for example, under the take-or-pay or throughput contract).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25336-109308

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