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Share-Based Compensation - Share-Based Compensation Expense (Details) - USD ($) $ in Millions | 3 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Share-Based Compensation Expense [Line Items] |  |
Total share-based compensation expense | $ 8.4 | $ 8.8
Cost of molecular diagnostic testing |  |
Share-Based Compensation Expense [Line Items] |  |
Total share-based compensation expense | 0.3 | 0.2
Cost of pharmaceutical and clinical services |  |
Share-Based Compensation Expense [Line Items] |  |
Total share-based compensation expense | 0.1 | 0.1
Research and development expense |  |
Share-Based Compensation Expense [Line Items] |  |
Total share-based compensation expense | 1.3 | 1.5
Selling, general, and administrative expense |  |
Share-Based Compensation Expense [Line Items] |  |
Total share-based compensation expense | $ 6.7 | $ 7.0

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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