v3.5.0.2
Segment Information - Schedule of Segment Information (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
Segment Reporting Information [Line Items]                      
Net sales $ 715.7 $ 827.5 $ 869.2 $ 784.6 $ 861.6 $ 997.5 $ 974.9 $ 808.5 $ 3,197.0 $ 3,642.5 $ 3,585.1
Restructuring and divestiture costs                 22.4 16.7 10.0
Integration-related costs and other, net                 16.0 32.2 32.6
Goodwill impairment charges                 864.1 4.1  
Depreciation and amortization                 239.6 231.9 202.3
Operating income (61.4) $ (811.7) $ 43.1 $ 22.1 19.6 $ 75.1 $ 68.9 $ 3.1 (807.9) 166.7 385.7
Interest expense, net                 (72.9) (71.0) (71.5)
Debt refinancing costs                 3.2   78.5
Gain on acquisition of controlling interest                     25.9
Foreign exchange loss                 (2.3) (1.0) (0.2)
Income from continuing operations before income taxes                 (886.3) 94.7 261.4
Capital expenditures                 191.9 193.1 177.9
Total assets 4,539.4       5,656.0       4,539.4 5,656.0 5,857.1
Chlorovinyls [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                 2,506.1 2,930.2 2,917.3
Restructuring and divestiture costs                 0.3 12.6 (0.1)
Integration-related costs and other, net                 0.3 6.2 (8.8)
Goodwill impairment charges                 864.1 4.1  
Depreciation and amortization                 205.8 200.3 174.2
Capital expenditures                 144.0 148.9 132.7
Total assets 3,909.4       4,872.0       3,909.4 4,872.0 5,074.0
Building Products [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                 690.9 712.3 667.8
Restructuring and divestiture costs                 9.3 4.2 2.8
Integration-related costs and other, net                 0.6    
Depreciation and amortization                 23.0 21.9 21.2
Capital expenditures                 19.9 31.2 33.3
Total assets 557.7       581.3       557.7 581.3 577.8
Intersegment Elimination [Member] | Chlorovinyls [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                 214.0 256.0 226.2
Intersegment Elimination [Member] | Building Products [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                     0.1
Intersegment Eliminations Unallocated and Other [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                 (214.0) (256.0) (226.3)
Restructuring and divestiture costs                 12.8 (0.1) 7.3
Integration-related costs and other, net                 15.1 26.0 41.4
Depreciation and amortization                 10.8 9.7 6.9
Operating income                 (77.4) (84.9) (96.2)
Capital expenditures                 28.0 13.0 11.9
Total assets $ 72.3       $ 202.7       72.3 202.7 205.3
Operating Segments [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                 3,197.0 3,642.5 3,585.1
Operating Segments [Member] | Chlorovinyls [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                 2,720.1 3,186.2 3,143.5
Operating income                 (768.5) 213.9 434.9
Operating Segments [Member] | Building Products [Member]                      
Segment Reporting Information [Line Items]                      
Net sales                 690.9 712.3 667.9
Operating income                 $ 38.0 $ 37.7 $ 47.0