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Segment and Related Information - Schedule of Segment Performance Based on Income (Loss) before Interest Income and Other Income and Expense (Detail) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenues	$ 186.3	$ 202.3
Depreciation and amortization	18.2	18.3
Segment operating income (loss)	(20.9)	1.2
Diagnostics [Member]
Segment Reporting Information [Line Items]
Revenues	170.4	189.0
Depreciation and amortization	16.9	17.0
Segment operating income (loss)	17.3	27.6
Other [Member]
Segment Reporting Information [Line Items]
Revenues	15.9	13.3
Depreciation and amortization	1.3	1.3
Segment operating income (loss)	$ (38.2)	$ (26.4)

X

- Definition

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
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+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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