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Long-Term Debt - Archrock Credit Facility (Details) - USD ($)		3 Months Ended		6 Months Ended
	Apr. 26, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Line of Credit Facility
Repayments of long-term debt				$ 343,636,000	$ 970,000,000
Revolving Credit Facility
Line of Credit Facility
Commitment fee amount		$ 600,000	$ 500,000	1,100,000	900,000
Revolving Credit Facility | Partnership Credit Facility
Line of Credit Facility
Repayments of long-term debt	$ 63,200,000
Letter of credit outstanding	$ 15,400,000	$ 15,400,000.0		15,400,000.0
Debt extinguishment costs				2,500,000
Revolving Credit Facility | Credit Facility
Line of Credit Facility
Debt instrument weighted average interest rate (percent)						3.30%
Commitment fee amount			$ 200,000	$ 200,000	$ 300,000

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- Definition

Weighted average interest rate of debt outstanding.

+ References

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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