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Acquisitions - Additional Information (Detail) € in Millions, $ in Millions |  |  |  | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2016 USD ($) | May 31, 2016 USD ($) | May 31, 2015 USD ($) | Aug. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2016 USD ($) | May 31, 2016 EUR (€)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Cash payment on acquisition |  |  |  |  | $ 213.0 |  |  |
Goodwill |  |  |  |  | 312.8 |  | $ 195.3 |
Amortization of intangible asset |  |  |  |  | 5.5 | $ 3.2 |  |
Increase in goodwill |  |  |  |  | 0.8 |  |  |
Sividon Diagnostics GmbH |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Total consideration transferred |  |  | $ 51.9 |  |  |  |  |
Cash payment on acquisition |  |  | 39.0 |  |  |  |  |
Contingent consideration |  |  | 10.9 |  |  |  |  |
Goodwill |  |  | 18.9 |  |  |  |  |
Acquired intangible assets |  |  | $ 45.4 |  |  |  |  |
Total cash consideration transferred |  | $ 39.0 |  |  |  |  |  |
Business combination upfront and potential in additional performance based milestones |  |  |  |  |  |  | $ 16.8 | € 15.0
Decrease in contingent consideration |  |  |  |  | 0.4 |  |  |
Decrease in intangibles |  |  |  |  | 0.4 |  |  |
Increase in goodwill |  |  |  |  | $ 0.8 |  |  |
Assurex Health |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Total consideration transferred | $ 348.5 |  |  | $ 348.5 |  |  |  |
Cash payment on acquisition | 213.0 |  |  |  |  |  |  |
Additional payments upon completion of performance based milestones | 185.0 |  |  | 185.0 |  |  |  |
Contingent consideration | 130.0 |  |  | 130.0 |  |  |  |
Contingent consideration, valuation method |  |  |  |  | The fair value of the performance-based milestones was determined by using the Monte Carlo method. |  |  |
Amount of cash consideration deposited in escrow account |  |  |  | 19.1 |  |  |  |
Goodwill | 116.3 |  |  | 116.3 | $ 116.3 |  |  |
Acquired intangible assets | $ 298.8 |  |  | $ 298.8 |  |  |  |
Estimated net cash flows, discount rate |  |  |  |  | 16.00% |  |  |
Acquisition costs |  |  |  |  | $ 5.0 |  |  |
Revenue contributed by acquired entity |  |  |  |  | 7.2 |  |  |
Operating expenses related to acquired entity |  |  |  |  | 15.1 |  |  |
Amortization of intangible asset |  |  |  |  | 1.9 |  |  |
Assurex Health | Developed Technology |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquired intangible assets |  |  |  |  | $ 256.5 |  |  |
Intangible assets estimated useful lives |  |  |  |  | 17 years |  |  |
Assurex Health | Database |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquired intangible assets |  |  |  |  | $ 39.1 |  |  |
Intangible assets estimated useful lives |  |  |  |  | 5 years |  |  |
Assurex Health | Internally Developed Software |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquired intangible assets |  |  |  |  | $ 3.2 |  |  |
Intangible assets estimated useful lives |  |  |  |  | 3 years |  |  |

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