v3.5.0.2

Goodwill and Other Intangible Assets - Detail of the Definite-Lived Intangible Assets by Reportable Segment (Detail) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2016 | Dec. 31, 2015
Goodwill [Line Items] |  |
Gross carrying amounts | $ 1,250.6 | $ 1,250.6
Accumulated impairment charges | (2.9) | (2.9)
Accumulated amortization | (249.2) | (215.2)
Foreign currency translation adjustment | (20.1) | (24.7)
Net carrying amounts | 978.4 | 1,007.8
Chlorovinyls [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 1,205.8 | 1,205.8
Accumulated impairment charges | (2.9) | (2.9)
Accumulated amortization | (224.6) | (192.2)
Foreign currency translation adjustment | (20.1) | (24.6)
Net carrying amounts | 958.2 | 986.1
Building Products [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 44.8 | 44.8
Accumulated amortization | (24.6) | (23.0)
Foreign currency translation adjustment |  | (0.1)
Net carrying amounts | 20.2 | 21.7
Customer Relationships [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 1,169.7 | 1,169.7
Accumulated impairment charges | (2.9) | (2.9)
Accumulated amortization | (223.5) | (191.8)
Foreign currency translation adjustment | (20.1) | (24.7)
Net carrying amounts | 923.2 | 950.3
Customer Relationships [Member] | Chlorovinyls [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 1,142.3 | 1,142.3
Accumulated impairment charges | (2.9) | (2.9)
Accumulated amortization | (213.8) | (182.9)
Foreign currency translation adjustment | (20.1) | (24.6)
Net carrying amounts | 905.5 | 931.9
Customer Relationships [Member] | Building Products [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 27.4 | 27.4
Accumulated amortization | (9.7) | (8.9)
Foreign currency translation adjustment |  | (0.1)
Net carrying amounts | 17.7 | 18.4
Supply Contracts [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 42.6 | 42.6
Accumulated amortization | (7.3) | (6.3)
Net carrying amounts | 35.3 | 36.3
Supply Contracts [Member] | Chlorovinyls [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 42.6 | 42.6
Accumulated amortization | (7.3) | (6.3)
Net carrying amounts | 35.3 | 36.3
Technology [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 32.3 | 32.3
Accumulated amortization | (17.2) | (16.1)
Net carrying amounts | 15.1 | 16.2
Technology [Member] | Chlorovinyls [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 14.9 | 14.9
Accumulated amortization | (2.3) | (2.0)
Net carrying amounts | 12.6 | 12.9
Technology [Member] | Building Products [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 17.4 | 17.4
Accumulated amortization | (14.9) | (14.1)
Net carrying amounts | 2.5 | 3.3
Trade Names [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 6.0 | 6.0
Accumulated amortization | (1.2) | (1.0)
Net carrying amounts | 4.8 | 5.0
Trade Names [Member] | Chlorovinyls [Member] |  |
Goodwill [Line Items] |  |
Gross carrying amounts | 6.0 | 6.0
Accumulated amortization | (1.2) | (1.0)
Net carrying amounts | $ 4.8 | $ 5.0

X
- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References No definition available. + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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