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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2016 | Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2016 | Mar. 31, 2015 | Jun. 30, 2015
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Provision for income taxes |  | $ 1.4 | $ 19.4 | $ 20.1 | $ 38.0 |
Provision for income taxes excluding impact for contingent consideration |  |  | $ 18.9 |  | $ 39.9 |
Federal research and development credits |  | 1.4 |  | 4.5 |  |
Gross unrecognized tax benefits | $ 14.5 | 14.5 |  | 14.5 |  | $ 11.6
Gross unrecognized tax benefits related to uncertain tax position increased during the year |  |  |  | 2.9 |  |
Interest and penalties accrued related to unrecognized tax benefits | 1.5 | 1.5 |  | 1.5 |  |
Increase in interest and penalties accrued related to unrecognized tax benefits |  |  |  | 0.4 |  |
Maximum [Member] |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit | $ 1.0 | $ 1.0 |  | $ 1.0 |  |
Japan [Member] |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Expected reduction of corporate combined income tax | 3.20% |  |  |  |  |
Effective tax rate | 33.06% |  |  |  |  |
National Tax Agency Japan | Japan [Member] |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Open tax year |  |  |  | 2016 |  |

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