| Cover Page Document | Jul. 29, 2019 |
| Cover page. | |
| Entity Central Index Key | 0001389050 |
| Amendment Flag | false |
| Document Type | 8-K |
| Document Period End Date | Jul. 29, 2019 |
| 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, Street | 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of each class | Common stock, $0.01 par value per share |
| Trading Symbol | AROC |
| Name of exchange on which registered | NYSE |
| Entity Emerging Growth Company | false |
