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INCOME TAXES (Components of Net Deferred Income Tax Liability) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
INCOME TAXES [Abstract]    
Pensions $ 64,711us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions $ 24,185us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions
Other postretirement benefits 33,046us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits 35,752us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits
Asset retirement obligations and environmental accruals 37,904vmc_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligationsAndEnvironmentalAccruals 41,725vmc_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligationsAndEnvironmentalAccruals
Deferred compensation, vacation pay and incentives 121,900us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation 108,147us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation
Interest rate swaps 14,083us-gaap_DeferredTaxAssetsDerivativeInstruments 17,371us-gaap_DeferredTaxAssetsDerivativeInstruments
Self-insurance reserves 15,766us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance 18,338us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance
Inventory 9,982us-gaap_DeferredTaxAssetsInventory 8,866us-gaap_DeferredTaxAssetsInventory
Federal net operating loss carryforwards 2,439us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic 65,420us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic
State net operating loss carryforwards 59,315us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal 53,946us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
Valuation allowance on state net operating loss carryforwards (56,867)us-gaap_DeferredTaxAssetsValuationAllowance (46,280)us-gaap_DeferredTaxAssetsValuationAllowance
Foreign tax credit carryforwards 7,822us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign 22,410us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign
Alternative minimum tax credit carryforwards 32,390us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax 16,489us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
Charitable contribution carryforwards 6,930us-gaap_DeferredTaxAssetsCharitableContributionCarryforwards 10,814us-gaap_DeferredTaxAssetsCharitableContributionCarryforwards
Other 18,807us-gaap_DeferredTaxAssetsOther 16,054us-gaap_DeferredTaxAssetsOther
Total deferred tax assets 368,228us-gaap_DeferredTaxAssetsNet 393,237us-gaap_DeferredTaxAssetsNet
Fixed assets 661,697us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment 725,162us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Intangible assets 329,539us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets 304,972us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssets
Other 28,403us-gaap_DeferredTaxLiabilitiesOther 23,755us-gaap_DeferredTaxLiabilitiesOther
Total deferred tax liabilities 1,019,639us-gaap_DeferredTaxLiabilities 1,053,889us-gaap_DeferredTaxLiabilities
Net deferred tax liability $ 651,411us-gaap_DeferredTaxAssetsLiabilitiesNet $ 660,652us-gaap_DeferredTaxAssetsLiabilitiesNet