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Segment, Customers, and Geographic Information - Net Revenue within Geographic Areas Based on Customers' Locations (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 402.5	$ 477.6	$ 1,343.0	$ 1,224.1
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	111.6	228.0	581.3	464.9
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	152.6	112.3	384.4	386.8
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	90.0	71.0	207.3	153.3
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	33.8	29.5	122.0	108.3
Taiwan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	12.8	34.8	45.8	103.2
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenue	$ 1.7	$ 2.0	$ 2.2	$ 7.6

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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

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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