Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Goodwill | ||
| Beginning balance | $ 1,241,429 | $ 311,892 |
| Goodwill recognized | 37,584 | 958,527 |
| Foreign exchange impact | 26,943 | (28,990) |
| Ending balance | 1,305,956 | 1,241,429 |
| Performance Materials & Chemicals | ||
| Goodwill | ||
| Beginning balance | 852,506 | 0 |
| Goodwill recognized | 37,584 | 876,844 |
| Foreign exchange impact | 24,533 | (24,338) |
| Ending balance | 914,623 | 852,506 |
| Environmental Catalysts & Services | ||
| Goodwill | ||
| Beginning balance | 388,923 | 311,892 |
| Goodwill recognized | 0 | 81,683 |
| Foreign exchange impact | 2,410 | (4,652) |
| Ending balance | $ 391,333 | $ 388,923 |
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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