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Segment Information - Additional Information (Detail) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 USD ($) Segment Country | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Number of countries in which the Company sells products | Country | 94 |  |  |
Number of reportable segments | Segment | 2 |  |  |
Goodwill allocated to the Company's Segment | $ 89.9 | $ 91.8 |  |
Cash and cash equivalents | 844.0 | 889.8 | $ 645.4 | $ 973.0
Total amount of cash held by foreign subsidiaries maintained or invested in U.S. dollars | 28.2 | 19.1 |  |
Primary Reporting Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill allocated to the Company's Segment | 86.8 | 88.5 |  |
China [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill allocated to the Company's Segment | 3.1 | 3.3 |  |
Foreign countries [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Cash and cash equivalents | 316.2 | 310.5 |  |
United States [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Cash and cash equivalents | $ 527.8 | $ 579.3 |  |

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