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Stock-Based Compensation - Phantom Unit Activity (Details) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($) $ / shares shares
Partnership Phantom Units
Unrecognized compensation
Expected unrecognized compensation cost related to unvested awards (in dollars) | $	$ 1.6
Weighted-average period over which the expected unrecognized compensation cost related to unvested stock options will be recognized	1 year 9 months 18 days
Exterran Partners, L.P. | Partnership Phantom Units
Phantom Units
Non-vested awards at the beginning of the period (in shares)	92,000
Granted (in shares)	45,000
Vested (in shares)	(52,000)
Non-vested awards at the end of the period (in shares)	85,000
Weighted Average Grant-Date Fair Value Per Share
Non-vested awards at the beginning of the period (in dollars per share) | $ / shares	$ 27.38
Granted (in dollars per share) | $ / shares	24.87
Vested (in dollars per share) | $ / shares	25.67
Non-vested awards at the end of the period (in dollars per share) | $ / shares	$ 27.10
Partnership Plan | Exterran Partners, L.P.
Stock-based compensation
Maximum number of shares available under the Plan	1,035,378
Partnership Plan | Exterran Partners, L.P. | First anniversary vesting | Partnership Phantom Units
Stock-based compensation
Vesting percentage	33.33%
Partnership Plan | Exterran Partners, L.P. | Second anniversary vesting | Partnership Phantom Units
Stock-based compensation
Vesting percentage	33.33%
Partnership Plan | Exterran Partners, L.P. | Third anniversary vesting | Partnership Phantom Units
Stock-based compensation
Vesting percentage	33.33%
Vesting period	3 years

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