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Long-Term Debt - Senior Notes (Details) - USD ($)	1 Months Ended	9 Months Ended
	Apr. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Proceeds from borrowings of long-term debt		$ 1,055,000,000	$ 1,849,799,000
Partnership's 6% senior notes due 2022 | Exterran Partners, L.P.
Debt Instrument [Line Items]
Interest rate (as a percent)	6.00%	6.00%		6.00%
Principle amount of senior notes	$ 350,000,000.0
Proceeds from borrowings of long-term debt	337,400,000
Debt issuance cost	6,900,000
Amount of unamortized discount of notes	$ 5,700,000	$ 4,800,000		$ 5,200,000
Effective interest rate (as a percent)	6.25%

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