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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 | 9 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 164.0 | $ 216.6 | $ 545.4 | $ 635.7
Depreciation and amortization | 17.9 | 18.3 | 54.3 | 54.6
Segment operating income (loss) | (133.7) | 5.9 | (163.4) | 13.2
Diagnostics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 150.5 | 200.5 | 503.6 | 592.5
Depreciation and amortization | 16.8 | 17.0 | 50.5 | 50.7
Segment operating income (loss) | (93.6) | 40.6 | (46.2) | 96.6
Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 13.5 | 16.1 | 41.8 | 43.2
Depreciation and amortization | 1.1 | 1.3 | 3.8 | 3.9
Segment operating income (loss) | $ (40.1) | $ (34.7) | $ (117.2) | $ (83.4)

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