v3.5.0.2

Investments and Related Party Transactions - Additional Information (Detail) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jun. 17, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Schedule of Investments [Line Items] |  |  |  |
Ownership interest (as a percent) |  | 50.00% |  |
Other Assets [Member] |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Investment in LACC |  | $ 14,900,000 |  |
Eagle US 2 LLC [Member] |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Amount of capital committed in LACC | $ 225,000,000 |  |  |
Percentage of interest in LACC | 10.00% |  |  |
Maximum [Member] | Eagle US 2 LLC [Member] |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of ownership | 50.00% |  |  |
Chlorovinyls [Member] |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Investment in joint ventures |  | $ 15,800,000 | $ 11,000,000 | $ 11,700,000
TCI [Member] |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Ownership interest (as a percent) |  | 60.00% |  |
RS Cogen [Member] |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Ownership interest (as a percent) |  | 50.00% |  |
Future commitment per year to purchase electricity and steam from the joint venture |  | $ 23,500,000 |  |
Aggregate future commitment to purchase electricity and steam from the joint venture |  | 160,700,000 |  |
Purchases under future commitment |  | $ 25,800,000 | 25,000,000 |
RS Cogen [Member] | Chlorovinyls [Member] |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Ownership interest (as a percent) |  | 50.00% |  |
Investment in joint ventures |  | $ 9,500,000 | 4,600,000 |
Future commitment per year to purchase electricity and steam from the joint venture |  | 23,500,000 |  |
Aggregate future commitment to purchase electricity and steam from the joint venture |  | 160,700,000 |  |
Purchases under future commitment |  | $ 25,800,000 | 25,000,000 | $ 22,900,000
Shriram Vinyl Polytech Private Limited [Member] | Chlorovinyls [Member] |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Ownership interest (as a percent) |  | 50.00% |  |
Investment in joint ventures |  | $ 5,800,000 | 5,800,000 |
Vinyl Solutions Llc [Member] | Chlorovinyls [Member] |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Ownership interest (as a percent) |  | 50.00% |  |
Investment in joint ventures |  | $ 500,000 | $ 600,000 |

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- Definition Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments. + 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 210.5-02.12) -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 325 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=29638308&loc=d3e40346-111594 + Details
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