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v2.4.1.9

Goodwill - Changes in Carrying Amount of Goodwill (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2011
Goodwill [Line Items] |  |  |  |
Beginning Balance | $ 400.1 us-gaap_Goodwill | $ 379.7 us-gaap_Goodwill | $ 379.7 us-gaap_Goodwill |
Sale of discontinued operations | (14.3)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit |  |  |
Goodwill impairment | (6.4)us-gaap_GoodwillImpairmentLoss |  |  |
Changes in foreign exchange rates | 0.3 us-gaap_GoodwillTranslationAdjustments |  |  |
Ending Balance | 379.7 us-gaap_Goodwill | 379.7 us-gaap_Goodwill | 379.7 us-gaap_Goodwill |
Chemicals |  |  |  |
Goodwill [Line Items] |  |  |  |
Beginning Balance |  | 352.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember | 352.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember | 352.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember
Ending Balance | 352.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember | 352.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember | 352.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember | 352.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember
Component Products |  |  |  |
Goodwill [Line Items] |  |  |  |
Beginning Balance | 41.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember | 27.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember | 27.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember |
Sale of discontinued operations | (14.3)us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember |  |  |
Changes in foreign exchange rates | 0.3 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember |  |  |
Ending Balance | 27.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember | 27.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember | 27.1 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember |
EWI |  |  |  |
Goodwill [Line Items] |  |  |  |
Beginning Balance | 6.4 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = vhi_EWIMember |  |  |
Goodwill impairment | $ (6.4)us-gaap_GoodwillImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = vhi_EWIMember |  |  |

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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