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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Commitments And Contingencies Disclosure [Line Items] |  |  |
Acquisitions (divestitures) | $ (1,826) | $ (1,954) | $ 0
Environmental remediation liabilities - discounted | 24,500 |  |
Environmental remediation liabilities - undiscounted | 64,500 |  |
Potential revision on future environmental remediation costs before tax | 18,000 |  |
Rental expense | 45,000 | 31,900 | 30,700
Antioxidant, Ibuprofen and Propofol Assets |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |
Rental expense |  | 1,300 | 1,600
Rockwood Holdings, Inc. |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |
Acquisitions (divestitures) | $ 38,666 | $ 0 | $ 0
Maximum |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |
Accrual for environmental loss contingencies - discount rate | 4.30% |  |
Minimum |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |
Accrual for environmental loss contingencies - discount rate | 2.80% |  |

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