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v2.4.1.9

Commitments and Contingencies (Details 2) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 24 Months Ended | 27 Months Ended | 39 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014 case | Mar. 31, 2015 case | Mar. 31, 2015 | Oct. 09, 2014 case
Loss contingency |  |  |  |  |
Accrued liability for the outcomes of non-income based tax audits | $ 9.1 us-gaap_LossContingencyAccrualAtCarryingValue | $ 9.2 us-gaap_LossContingencyAccrualAtCarryingValue | $ 9.1 us-gaap_LossContingencyAccrualAtCarryingValue | $ 9.1 us-gaap_LossContingencyAccrualAtCarryingValue |
Litigation and Claims |  |  |  |  |
Number of heavy equipment statutes cases tried and completed in Texas state district court |  | 3 exh_NumberOfHeavyEquipmentStatuesCasesTriedAndCompletedToWhichEntityIsParty |  |  |
Number of heavy equipment statues cases appealed |  |  | 3 exh_NumberOfHeavyEquipmentStatuesCasesAppealed |  |
Number of district court rulings for which oral arguments were made |  |  |  |  | 2 exh_NumberOfDistrictCourtRulingsForWhichOralArgumentsMade
Ad valorem tax benefit | 3.7 exh_AdValoremTaxExpenseBenefit |  |  | 30.6 exh_AdValoremTaxExpenseBenefit |
Ad valorem tax benefit agreed to by a number of appraisal review boards and county appraisal districts | 6.2 exh_AdValoremTaxExpenseBenefitApproved |  | 6.2 exh_AdValoremTaxExpenseBenefitApproved | 6.2 exh_AdValoremTaxExpenseBenefitApproved |
Ad valorem tax benefit in litigation | 24.4 exh_AdValoremTaxExpenseBenefitInLitigation |  | 24.4 exh_AdValoremTaxExpenseBenefitInLitigation | 24.4 exh_AdValoremTaxExpenseBenefitInLitigation |
Maximum |  |  |  |  |
Business acquisition, contingent consideration |  |  |  |  |
Contingent payments | $ 46 us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_RangeAxis = us-gaap_MaximumMember |  | $ 46 us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_RangeAxis = us-gaap_MaximumMember | $ 46 us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_RangeAxis = us-gaap_MaximumMember |

X
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- Definition The amount of ad valorem tax expense (benefit) agreed to by one or more appraisal review boards and/or county appraisal districts. + References No definition available. + Details
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- Definition Represents the number of district court rulings for which oral arguments were made. + References No definition available. + Details
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- Definition Represents the number of heavy equipment statutes cases tried and completed to which the entity is a party, which have been appealed. + References No definition available. + Details
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- Definition Represents the number of heavy equipment statutes cases tried and completed to which the entity is a party. + References No definition available. + Details
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