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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	Mar. 31, 2019	Jun. 30, 2018	[1]
Goodwill And Intangible Assets [Line Items]
Goodwill	$ 415.9	$ 318.6
Diagnostics [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill	350.4
Other [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill	$ 65.5
[1] Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 1 to the financial statements contained in Part I, Item 1 of this report for additional information.

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- Definition

Goodwill and intangible assets.

+ References

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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