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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Goodwill And Intangible Assets [Line Items]
Goodwill	$ 318,600,000	$ 316,100,000	$ 195,300,000
Impairment of goodwill	0	0	0
Impairment of long-lived assets	0	$ 0	$ 0
Estimated amortization expenses of intangible assets for 2019	37,200,000
Estimated amortization expenses of intangible assets for 2020	36,900,000
Estimated amortization expenses of intangible assets for 2021	36,900,000
Estimated amortization expenses of intangible assets for 2022	30,000,000
Estimated amortization expenses of intangible assets for 2023	28,600,000
Estimated amortization expenses of intangible assets after 2023	$ 262,100,000
Developed Technology and Database [Member] \| Minimum [Member]
Goodwill And Intangible Assets [Line Items]
Estimated useful life	3 years
Developed Technology and Database [Member] \| Maximum [Member]
Goodwill And Intangible Assets [Line Items]
Estimated useful life	15 years
Trademarks [Member]
Goodwill And Intangible Assets [Line Items]
Estimated useful life	10 years
Weighted average remaining amortization period	14 years
Customer Relationships [Member]
Goodwill And Intangible Assets [Line Items]
Estimated useful life	3 years
Weighted average remaining amortization period	14 years
Purchased Licenses and Technologies [Member]
Goodwill And Intangible Assets [Line Items]
Weighted average remaining amortization period	14 years
Diagnostics [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill	$ 252,800,000
Other [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill	$ 65,800,000