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Acquisitions - Pro Forma Results of Acquisitions (Detail) - Counsyl Inc [Member] - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Business Acquisition [Line Items] |  |  |  |
Revenue | $ 164.0 | $ 216.6 | $ 545.4 | $ 645.9
Income (loss) from operations | (133.7) | 5.9 | (163.4) | 23.5
Net income (loss) | $ (115.2) | $ 6.9 | $ (144.1) | $ 18.2
Earnings (loss) per share, basic | $ (1.55) | $ 0.09 | $ (1.94) | $ 0.25
Earnings (loss) per share, diluted | $ (1.55) | $ 0.09 | $ (1.94) | $ 0.24

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