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Partners' Capital - Cash Distributions (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 0 Months Ended | 9 Months Ended | 0 Months Ended | 9 Months Ended | 0 Months Ended | 9 Months Ended | 0 Months Ended | 9 Months Ended | 0 Months Ended | 9 Months Ended
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Aug. 14, 2014 Cash Distributions | May 15, 2014 Cash Distributions | Feb. 14, 2014 Cash Distributions | Nov. 14, 2013 Cash Distributions | Aug. 14, 2013 Cash Distributions | May 15, 2013 Cash Distributions | Sep. 30, 2014 Cash Distributions Maximum | Sep. 30, 2014 Limited partner Subordinated units | Aug. 14, 2014 Limited partner Subordinated units Cash Distributions | May 15, 2014 Limited partner Subordinated units Cash Distributions | Feb. 14, 2014 Limited partner Subordinated units Cash Distributions | Nov. 14, 2013 Limited partner Subordinated units Cash Distributions | Aug. 14, 2013 Limited partner Subordinated units Cash Distributions | May 15, 2013 Limited partner Subordinated units Cash Distributions | Oct. 23, 2014 Limited partner Common and Subordinated Units Cash Distributions | Aug. 14, 2014 Limited partner Common and Subordinated Units Cash Distributions | May 15, 2014 Limited partner Common and Subordinated Units Cash Distributions | Feb. 14, 2014 Limited partner Common and Subordinated Units Cash Distributions | Nov. 14, 2013 Limited partner Common and Subordinated Units Cash Distributions | Aug. 14, 2013 Limited partner Common and Subordinated Units Cash Distributions | May 15, 2013 Limited partner Common and Subordinated Units Cash Distributions | Sep. 30, 2014 Limited partner Common units | Aug. 14, 2014 Limited partner Common units Cash Distributions | May 15, 2014 Limited partner Common units Cash Distributions | Feb. 14, 2014 Limited partner Common units Cash Distributions | Nov. 14, 2013 Limited partner Common units Cash Distributions | Aug. 14, 2013 Limited partner Common units Cash Distributions | May 15, 2013 Limited partner Common units Cash Distributions | Sep. 30, 2014 General partner | Sep. 30, 2013 General partner | Aug. 14, 2014 General partner Cash Distributions | May 15, 2014 General partner Cash Distributions | Feb. 14, 2014 General partner Cash Distributions | Nov. 14, 2013 General partner Cash Distributions | Aug. 14, 2013 General partner Cash Distributions | May 15, 2013 General partner Cash Distributions | Nov. 14, 2014 USA Compression Holdings, LLC | May 27, 2014 USA Compression Holdings, LLC | Sep. 30, 2014 USA Compression Holdings, LLC Limited partner Subordinated units | Sep. 30, 2014 USA Compression Holdings, LLC Limited partner Common units | Sep. 30, 2014 USA Compression Holdings, LLC General partner | Nov. 14, 2014 Argonaut and related parties Limited partner | Sep. 30, 2014 Argonaut and related parties Limited partner Common units
Cash Distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General Partner, interest (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.70% | 2.00% |  |  |  |  |  |  |  |  |  |  | 1.70% |  |
Distribution per Limited Partner Unit (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.50 | $ 0.49 | $ 0.48 | $ 0.46 | $ 0.44 | $ 0.348 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Distribution | $ 22.6 | $ 19.1 | $ 18.4 | $ 17.4 | $ 13.2 | $ 10.3 |  |  | $ 7.0 | $ 6.9 | $ 6.7 | $ 6.5 | $ 6.2 | $ 4.9 |  |  |  |  |  |  |  |  | $ 15.1 | $ 11.8 | $ 11.3 | $ 10.6 | $ 6.7 | $ 5.2 |  |  | $ 0.5 | $ 0.4 | $ 0.4 | $ 0.3 | $ 0.3 | $ 0.2 |  |  |  |  |  |  |
Period for determining prorated quarterly cash distribution rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 72 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum Quarterly Distribution (in dollars per unit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.435 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of days after quarter end when cash distributions are to be made |  |  |  |  |  |  | 45 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-cash distributions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 38.5 |  |  |
Cash distribution announced per unit (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.505 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  |  |  |  |  |  | 30.80% |  |  |  |  |  |  |  |  |  |  |  |  |  | 67.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 41.70% | 40.60% | 30.80% | 10.10% |  | 16.20% | 16.20%

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