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Cover - USD ($)
 12 Months Ended
Dec. 31, 2019
Feb. 13, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-33666    
Entity Registrant Name Archrock, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 74-3204509    
Entity Address, Address 9807 Katy Freeway    
Entity Address, Suite Suite 100    
Entity Address, City Houston    
Entity Address, State TX    
Entity Address, Postal Zip Code 77024    
City Area Code 281    
Local Phone Number 836-8000    
Title of each class Common Stock, $0.01 par value per share    
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 Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
Entity Public Float     $ 1,357,045,157
Entity Common Stock, Shares Outstanding   152,879,266  
Documents Incorporated by Reference
Portions of the registrant’s definitive proxy statement for the 2019 Meeting of Stockholders, which is expected to be filed with the Securities and Exchange Commission within 120 days after December 31, 2019, are incorporated by reference into Part III of this Form 10-K.
    
Entity Central Index Key 0001389050    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY