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Transactions Related to the Partnership (Narratives) (Details) $ / shares in Units, hp in Millions, $ in Millions |  |  |  |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 14, 2018 $ / shares | Nov. 15, 2017 $ / shares | Aug. 15, 2017 $ / shares | May 16, 2017 $ / shares | Feb. 15, 2017 $ / shares | Mar. 31, 2018 hp compressor_unit $ / shares shares | Mar. 31, 2017 $ / shares shares | Apr. 30, 2018 USD ($) | Apr. 26, 2018
Transactions related to the partnership |  |  |  |  |  |  |  |  |
Dividends declared and paid per common share (in dollars per share) | $ / shares | $ 0.12 | $ 0.12 | $ 0.1200 | $ 0.12 | $ 0.1200 | $ 0.12 | $ 0.12 |  |
General Partner |  |  |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |  |  |
Partners' capital account, units distributed in acquisition (units) | shares |  |  |  |  |  | 690 | 1,119 |  |
General partner units interest (as a percentage) |  |  |  |  |  | 2.00% |  |  |
Archrock Partners, L.P |  |  |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |  |  |
Vie ownership percentage |  |  |  |  |  | 43.00% |  |  |
Number of compressor units | compressor_unit |  |  |  |  |  | 5,989 |  |  |
Compressor units horsepower | hp |  |  |  |  |  | 3.3 |  |  |
Archrock Partners, L.P | United States |  |  |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |  |  |
Percentage of horsepower in fleet |  |  |  |  |  | 86.00% |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |  |  |
Authorized distributions to limited partnership, amount | $ |  |  |  |  |  |  |  | $ 15.5 |
Subsequent Event | Partnership Merger | Common Stock |  |  |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |  |  |
Share conversion rate (per share) |  |  |  |  |  |  |  |  | 1.40

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