| **Operating segments - Sales Information by Geographic Regions (Detail) - USD ($) $ in Thousands** | 3 Months Ended | 6 Months Ended |
|----------------------------------------------------------------------------------------------------|----------------|----------------|
||
| **Revenues from External Customers and Long-Lived Assets [Line Items]**                            |           |           |   |   |
| Net external sales                                                                                 | $ 635,403      | $ 589,538      | $ 1,244,569 | $ 1,116,104 |
| United States                                                                                      |           |           |   |   |
| **Revenues from External Customers and Long-Lived Assets [Line Items]**                            |           |           |   |   |
| Net external sales                                                                                 | 218,508        | 202,924        | 409,885 | 388,240 |
| Americas                                                                                           |           |           |   |   |
| **Revenues from External Customers and Long-Lived Assets [Line Items]**                            |           |           |   |   |
| Net external sales                                                                                 | 55,244         | 44,914         | 103,769 | 81,052 |
| Europe                                                                                             |           |           |   |   |
| **Revenues from External Customers and Long-Lived Assets [Line Items]**                            |           |           |   |   |
| Net external sales                                                                                 | 172,256        | 156,451        | 328,241 | 291,602 |
| Japan                                                                                              |           |           |   |   |
| **Revenues from External Customers and Long-Lived Assets [Line Items]**                            |           |           |   |   |
| Net external sales                                                                                 | 25,443         | 27,852         | 51,001 | 54,967 |
| Asia Pacific                                                                                       |           |           |   |   |
| **Revenues from External Customers and Long-Lived Assets [Line Items]**                            |           |           |   |   |
| Net external sales                                                                                 | $ 163,952      | $ 157,397      | $ 351,673 | $ 300,243 |

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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.
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No definition available.
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