Cover Page - USD ($)	12 Months Ended
Cover Page - USD ($)	Dec. 31, 2021	Apr. 26, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Amendment Description	On March 2, 2022, Exterran Corporation (“Exterran”) filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2021 (the “Original Form 10-K”). Exterran is filing this Amendment No. 1 on Form 10-K/A (the “Form 10-K/A) in order to include the information required by Part III, Items 10 through 14 for Form 10-K. This information was previously omitted from the Original Form 10-K consistent with General Instruction G(3) to Form 10-K. Exterran is filing this amendment because we do not intend to file our definitive proxy statement within 120 days of the end of our fiscal year ended December 31, 2021. In connection with the filing of the Form 10-K/A and pursuant to the rules of the SEC, we are including with the Form 10-K/A new certifications by our principle executive and principal financial officers. Accordingly, Item 15 of Part IV has also been amended to reflect the filing of these new certifications. Except as described above, no other changes have been made to the Original Form 10-K. The Original Form 10-K continues to speak as of the date of the Original Form 10-K, and we have not updated the disclosures contained therein to reflect any events which occurred at a date subsequent to the filing of the Original Form 10-K other than expressly indicated in this Form 10-K/A. In this Form 10-K/A , unless the context indicates otherwise, the terms “Company,” “our,” “we” or “us” refer to Exterran. Other defined terms used in this Form 10-K/A but not defined herein shall have the meaning specified for such terms in the Original Form 10-K. All statements in this Form 10-K/A that are not historical are forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). These forward-looking statements can generally be identified as such because the context of the statement will include words such as “may,” “will,” “intend,” “plans,” “believes,” “anticipates,” “expects,” “estimates,” “predicts,” “potential,” “continue,” “opportunity,” “goals,” or “should,” the negative of these words or words of similar import. Similarly, statements that describe our future plans, strategies, intentions, expectations, objectives, goals or prospects are also forward-looking statements. These forward-looking statements are or will be, as applicable, based largely on our expectations and projections about future events and future trends affecting our business, and so are or will be, as applicable, subject to risks and uncertainties including but not limited to the risk factors discussed in the Original Form 10-K, that could cause actual results to differ materially from those anticipated in the forward-looking statements. We caution investors that there can be no assurance that actual results or business conditions will not differ materially from those projected or suggested in such forward-looking statements. Our views and the events, conditions and circumstances on which these future forward-looking statements are based, may change.
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-36875
Entity Registrant Name	Exterran Corporation
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-3282259
Entity Address, Address Line One	11000 Equity Drive
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77041
City Area Code	281
Local Phone Number	836-7000
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	EXTN
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 114,047,686
Entity Common Stock, Shares Outstanding		33,315,011
Entity Central Index Key	0001635881
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	271
Auditor Location	Houston, Texas

Exterran Corp 10-K/A