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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 |  |

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- Definition 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 No definition available. + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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