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Segment Information - Segment Financial Information (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Segment Reporting Information [Line Items] |  |  |  |
Recognized recovery of precious metals |  | $ 4.5 |  | $ 4.5
Interest cost capitalized | 3.9 | 1.2 | 9.2 | 2.1
Chemical [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Business interruption and property insurance recoveries | 0 | 4.2 | 28.0 | 18.4
Cost of sales [Member] | Chemical [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Business interruption loss | $ 0 | $ 4.2 | $ 22.9 | $ 18.4

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- Definition The amount of recoverable costs included in an insurance claim. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Recovery (during a major maintenance or capital project) of precious metals previously expensed as consumed as a catalyst in the chemical manufacturing process, which have accumulated over time within manufacturing equipment. + References No definition available. + Details
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- Definition The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Amount of interest capitalized during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Allowance for Funds Used during Construction -URI http://asc.fasb.org/extlink&oid=6504829 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
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- Details
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