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Cover - USD ($)
 12 Months Ended
Dec. 31, 2021
Feb. 16, 2022
Jun. 30, 2021
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Document Transition Report false    
Commission File Number 001-33666    
Entity Registrant Name Archrock, Inc    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 74-3204509    
Entity Street Address 9807 Katy Freeway    
Entity Suite Number Suite 100    
Entity City Houston    
Entity State TX    
Entity Postal Zip Code 77024    
City Area Code 281    
Local Phone Number 836-8000    
Title of each class Common Stock    
Trading Symbol AROC    
Name of exchange on which registered NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 1,191,894,665
Entity Common Stock, Shares Outstanding   155,231,118  
Documents Incorporated by Reference

Portions of the registrant’s definitive proxy statement for the 2021 Meeting of Stockholders, which is expected to be filed with the Securities and Exchange Commission within 120 days after December 31, 2021, are incorporated by reference into Part III of this Form 10-K.

    
Auditor Firm ID 34    
Auditor Name DELOITTE & TOUCHE LLP    
Auditor Location Houston, Texas    
Entity Central Index Key 0001389050    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Amendment Flag false