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Long-Lived Asset Impairment (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014 hp CompressorUnit	Jun. 30, 2013 CompressorUnit hp
Fabrication
Long-Lived Asset Impairment
Long-lived asset impairment		$ 11.9
Idle compressor units
Long-Lived Asset Impairment
Number of long-lived assets that the entity determined to retire and either sell or re-utilize key components	170	170
Horsepower retired from the contract operations business	46,000	40,000
Long-lived asset impairment	13.7	7.1
Other long lived assets
Long-Lived Asset Impairment
Long-lived asset impairment		$ 1.1

- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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