v3.3.1.900

Segment Information - Schedule of Sales by Product Line (Detail) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net sales | $ 755.4 | $ 874.4 | $ 916.5 | $ 814.8 | $ 903.0 | $ 1,047.2 | $ 1,021.7 | $ 836.9 | $ 3,361.1 | $ 3,808.8 | $ 3,767.2
Chlorovinyls [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  | 2,506.1 | 2,930.2 | 2,917.3
Chlorovinyls [Member] | Chlor-Alkali and Derivative Products [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  | 2,056.3 | 2,435.3 | 2,447.2
Chlorovinyls [Member] | Compound Products [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  | 449.8 | 494.9 | 470.1
Building Products [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  | 855.0 | 878.6 | 849.9
Building Products [Member] | Window and Door Profiles and Moulding Products [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  | 312.9 | 314.5 | 314.4
Building Products [Member] | Outdoor Building Products [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net sales |  |  |  |  |  |  |  |  | $ 542.1 | $ 564.1 | $ 535.5

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