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Business Acquisition - Purchase Price Allocation (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016 | May 02, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill | $ 764.7 | $ 762.3 |  | $ 678.4
Medsystems Holdings, Inc. |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Current assets acquired net of liabilities assumed |  |  | $ 14.1 |
Property, plant and equipment |  |  | 4.4 |
Identifiable intangible assets, excluding IPR&D |  |  | 105.1 |
Deferred tax liabilities |  |  | (38.4) |
Goodwill |  |  | 84.1 |
Total |  |  | 175.0 |
Medsystems Holdings, Inc. | IPR&D |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Identifiable IPR&D |  |  | $ 5.7 |

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