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Long-Lived Asset Impairment (Tables)
3 Months Ended
Mar. 31, 2017
Asset Impairment Charges [Abstract]  
Details of Impairment of Long-Lived Assets Held and Used by Asset
The following table presents the results of our impairment review for the three months ended March 31, 2017 and 2016:
 
Three Months Ended March 31,
 
2017
 
2016
Retired idle compressor units within the active fleet
80

 
80

Horsepower of retired idle compressor units within the active fleet
28,000

 
33,000

Impairment recorded on retired idle compressor units within the active fleet
(in millions)
$
8.2

 
$
9.9