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Segment and Related Information - Reconciliation of Assets by Operating Segment and Geographic Region to Total Assets (Detail) - USD ($) $ in Millions		Jun. 30, 2018	Jun. 30, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		$ 1,174.1	$ 1,208.9
Operating segments and geographic region [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		962.8	1,009.7
Cash, cash equivalents, and marketable investment securities [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	[1]	$ 211.3	$ 199.2
[1] The Company manages cash, cash equivalents, and marketable investment securities at the consolidated level for all segments

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

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+ References

No definition available.

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