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Pension Plans and Other Postretirement Benefits Pension and Postretirement Plan Contributions (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Pension Contributions | $ 4.8 | $ 5.2 | $ 13.8 | $ 7.5
Other Postretirement Benefits Payments | $ 0.9 | 0.8 | 2.9 | $ 3.2
Rockwood Holdings, Inc. | Pension Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Expected Contributions to Rockwood Pension Plans for the Remainder of 2015 |  |  | $ 1.5 |
Antioxidant, Ibuprofen and Propofol Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Pension Contributions |  | $ 4.3 |  |

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- Definition Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period. + References No definition available. + Details
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- Definition The amount of cash or cash equivalents contributed during the reporting period by the entity to fund non-pension postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585 + Details
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