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Business and Geographic Segments - Total Assets Held by Business Segments (Detail) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Total assets | $ 2,537.4 | $ 2,945.2 | $ 2,951.7
Corporate and eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | 366.3 | 357.1 | 371.6
Chemicals |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | 1,617.6 | 2,001.2 | 1,975.8
Component Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | 88.7 | 83.1 | 80.6
Waste Management |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | 231.9 | 257.7 | 270.1
Real Estate Management And Development |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | $ 232.9 | $ 246.1 | $ 253.6

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 + Details
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