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Business Segment Information - Segment Operating Performance (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Segment Reporting Information [Line Items] |  |
Net sales | $ 416.1 us-gaap_SalesRevenueNet | $ 462.4 us-gaap_SalesRevenueNet
Cost of sales | 326.8 us-gaap_CostOfGoodsSold | 376.6 us-gaap_CostOfGoodsSold
Gross margin | 89.3 us-gaap_GrossProfit | 85.8 us-gaap_GrossProfit
Operating income (loss) | 34.6 us-gaap_OperatingIncomeLoss | 22.8 us-gaap_OperatingIncomeLoss
Securities earnings | 6.7 vhi_SecuritiesEarnings | 6.8 vhi_SecuritiesEarnings
Insurance recoveries | 3.1 us-gaap_InsuranceRecoveries | 0.8 us-gaap_InsuranceRecoveries
General expenses, net | (8.2)us-gaap_OtherGeneralExpense | (8.3)us-gaap_OtherGeneralExpense
Interest expense | (14.6)us-gaap_InterestExpense | (13.7)us-gaap_InterestExpense
Income before income taxes | 21.6 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 8.4 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Chemicals |  |
Segment Reporting Information [Line Items] |  |
Net sales | 365.1 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember | 420.1 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember
Cost of sales | 288.2 us-gaap_CostOfGoodsSold / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember | 340.2 us-gaap_CostOfGoodsSold / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember
Gross margin | 76.9 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember | 79.9 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember
Operating income (loss) | 34.0 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember | 27.6 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = vhi_ChemicalsMember
Component Products |  |
Segment Reporting Information [Line Items] |  |
Net sales | 27.9 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember | 25.8 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember
Cost of sales | 19.3 us-gaap_CostOfGoodsSold / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember | 18.0 us-gaap_CostOfGoodsSold / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember
Gross margin | 8.6 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember | 7.8 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember
Operating income (loss) | 3.7 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember | 3.3 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = vhi_ComponentProductsMember
Waste Management |  |
Segment Reporting Information [Line Items] |  |
Net sales | 15.0 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = vhi_WasteManagementMember | 7.0 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = vhi_WasteManagementMember
Cost of sales | 12.1 us-gaap_CostOfGoodsSold / us-gaap_StatementBusinessSegmentsAxis = vhi_WasteManagementMember | 10.7 us-gaap_CostOfGoodsSold / us-gaap_StatementBusinessSegmentsAxis = vhi_WasteManagementMember
Gross margin | 2.9 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = vhi_WasteManagementMember | (3.7)us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = vhi_WasteManagementMember
Operating income (loss) | (2.9)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = vhi_WasteManagementMember | (8.5)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = vhi_WasteManagementMember
Real Estate Management And Development |  |
Segment Reporting Information [Line Items] |  |
Net sales | 8.1 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = vhi_RealEstateManagementAndDevelopmentMember | 9.5 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = vhi_RealEstateManagementAndDevelopmentMember
Cost of sales | 7.2 us-gaap_CostOfGoodsSold / us-gaap_StatementBusinessSegmentsAxis = vhi_RealEstateManagementAndDevelopmentMember | 7.7 us-gaap_CostOfGoodsSold / us-gaap_StatementBusinessSegmentsAxis = vhi_RealEstateManagementAndDevelopmentMember
Gross margin | 0.9 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = vhi_RealEstateManagementAndDevelopmentMember | 1.8 us-gaap_GrossProfit / us-gaap_StatementBusinessSegmentsAxis = vhi_RealEstateManagementAndDevelopmentMember
Operating income (loss) | $ (0.2)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = vhi_RealEstateManagementAndDevelopmentMember | $ 0.4 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = vhi_RealEstateManagementAndDevelopmentMember

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- Definition Total costs related to goods produced and sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 2 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 + Details
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- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
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- Definition Amount of general expenses not normally included in Other Operating Costs and Expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.6) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 6 -Article 5 + Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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- Definition Aggregate nonoperating income amounts earned from investment securities including dividends, interest on securities, profits (losses) on securities and net and miscellaneous other income items. + References No definition available. + Details
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