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Commitments and Contingencies (Details 2) $ in Millions	6 Months Ended	24 Months Ended	30 Months Ended	42 Months Ended
	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($) case	Jun. 30, 2015 USD ($) case	Jun. 30, 2015 USD ($) case	Feb. 12, 2015 case	Oct. 09, 2014 case
Loss contingency
Accrued liability for the outcomes of non-income based tax audits	$ 9.0	$ 9.2	$ 9.0	$ 9.0
Litigation and Claims
Number of heavy equipment statutes cases that have advanced to the point of trial or submission of summary judgment motions | case				5
Number of heavy equipment statutes cases tried and completed in Texas state district court | case		3
Number of heavy equipment statutes cases appealed | case			3
Number of district court appeals for which oral arguments were made | case					1	2
Ad valorem tax benefit	7.4			$ 34.3
Ad valorem tax benefit agreed to by a number of appraisal review boards and county appraisal districts	10.5		$ 10.5	10.5
Ad valorem tax benefit in litigation	23.8		23.8	23.8
Maximum
Business acquisition, contingent consideration
Contingent payments	$ 46.0		$ 46.0	$ 46.0

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- Definition

The amount of ad valorem tax expense (benefit) included as a component of cost of goods sold (excluding depreciation and amortization).

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The amount of ad valorem tax expense (benefit) agreed to by one or more appraisal review boards and/or county appraisal districts.

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The amount of ad valorem tax expense (benefit) in litigation in various courts.

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- Definition

Represents the number of district court appeals for which oral arguments were made.

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- Definition

Represents the number of heavy equipment statutes cases advanced to the point of trial or submission of summary judgment motions on the merits to which the entity is a party under state heavy equipment statutes.

+ References

No definition available.

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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.

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Represents the number of heavy equipment statutes cases tried and completed to which the entity is a party.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

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Amount of loss contingency liability.

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-Topic 450



-SubTopic 20



-Section 50



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