XML 59 R56.htm IDEA: XBRL DOCUMENT v2.4.1.9
Acquisitions and Divestitures (Details Textual) (USD $)
In Millions, unless otherwise specified
12 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Aug. 31, 2014
Business Acquisition [Line Items]        
Purchase price $ 720.9us-gaap_BusinessCombinationConsiderationTransferred1 $ 125.2us-gaap_BusinessCombinationConsiderationTransferred1 $ 48.8us-gaap_BusinessCombinationConsiderationTransferred1  
Ready-mix concrete operations        
Business Acquisition [Line Items]        
Gain on sale of ready-mix concrete operations   12.5us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= trn_ReadyMixConcreteOperationsMember
   
Meyer        
Business Acquisition [Line Items]        
Purchase price       595.6us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= trn_MeyerMember
Acquisition-related transaction costs 8.7us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
/ us-gaap_BusinessAcquisitionAxis
= trn_MeyerMember
     
Acquisition-related non-recurring income tax expense 1.5trn_BusinessAcquisitionNonrecurringTaxExpense
/ us-gaap_BusinessAcquisitionAxis
= trn_MeyerMember
     
Energy Equipment Group        
Business Acquisition [Line Items]        
Purchase price 714.8us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_StatementBusinessSegmentsAxis
= trn_EnergyEquipmentGroupMember
27.9us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_StatementBusinessSegmentsAxis
= trn_EnergyEquipmentGroupMember
0us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_StatementBusinessSegmentsAxis
= trn_EnergyEquipmentGroupMember
 
Energy Equipment Group | Individually immaterial acquisitions        
Business Acquisition [Line Items]        
Number of acquisitions 3us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
/ us-gaap_StatementBusinessSegmentsAxis
= trn_EnergyEquipmentGroupMember
     
Construction Products Group        
Business Acquisition [Line Items]        
Purchase price $ 6.1us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_StatementBusinessSegmentsAxis
= trn_ConstructionProductsGroupMember
$ 74.2us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_StatementBusinessSegmentsAxis
= trn_ConstructionProductsGroupMember
$ 48.8us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_StatementBusinessSegmentsAxis
= trn_ConstructionProductsGroupMember
 
Construction Products Group | Individually immaterial acquisitions        
Business Acquisition [Line Items]        
Number of acquisitions 1us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
/ us-gaap_StatementBusinessSegmentsAxis
= trn_ConstructionProductsGroupMember