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Long-Term Debt - Partnership Credit Facility (Details) - USD ($)			3 Months Ended								12 Months Ended
	Apr. 26, 2018	Mar. 30, 2017	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Line of Credit Facility
Payments for debt issuance costs											$ 3,332,000	$ 14,855,000	$ 2,395,000
Repayments of long-term debt											605,636,000	1,270,194,000	675,000,000
Debt extinguishment loss			$ 0	$ 0	$ 2,450,000	$ 0	$ 0	$ 0	$ 0	$ 291,000	2,450,000	291,000	0
Revolving Credit Facility | Archrock Partners, L.P
Line of Credit Facility
Undrawn capacity under revolving credit facility			395,300,000								395,300,000
Revolving Credit Facility | Revolving Credit Facility Due March 2022
Line of Credit Facility
Interest rate (as a percent)		6.00%
Payments for debt issuance costs		$ 14,900,000
Debt issuance cost written off													400,000
Maximum borrowing capacity	$ 1,250,000,000.00					1,100,000,000.0
Debt issuance costs	3,300,000												1,700,000
Change in borrowing capacity											250,000,000
Commitment fee amount											2,100,000	$ 2,100,000	1,400,000
Maximum consolidated cash balance			50,000,000.0								50,000,000.0
Line of credit outstanding			15,200,000								$ 15,200,000
Revolving Credit Facility | Revolving Credit Facility Due March 2022 | Minimum
Line of Credit Facility
Line of credit facility, commitment fee (percentage)											0.375%
Revolving Credit Facility | Revolving Credit Facility Due March 2022 | Maximum
Line of Credit Facility
Line of credit facility, commitment fee (percentage)											0.50%
Undrawn capacity under revolving credit facility			$ 391,600,000								$ 391,600,000
Revolving Credit Facility | Revolving Credit Facility Due March 2022 | Swing Line
Line of Credit Facility
Change in borrowing capacity											$ 50,000,000
Revolving Credit Facility | Partnership former credit facility
Line of Credit Facility
Repayments of long-term debt		648,400,000
Debt issuance cost written off		600,000
Commitment fee amount													$ 1,400,000
Revolving Credit Facility | Term Loan Facility Due May2018
Line of Credit Facility
Debt extinguishment loss		$ 300,000
Letter of Credit | Revolving Credit Facility Due March 2022
Line of Credit Facility
Maximum borrowing capacity	$ 50,000,000.0					$ 25,000,000.0
Line of Credit
Line of Credit Facility
Debt instrument, variable rate											2.70%
Weighted average interest rate			5.40%				4.80%				5.40%	4.80%
Line of Credit | Revolving Credit Facility Due March 2022 | Federal Funds Rate
Line of Credit Facility
Debt instrument, interest margin added to variable rate											0.50%
Line of Credit | Revolving Credit Facility Due March 2022 | One-month LIBOR
Line of Credit Facility
Debt instrument, interest margin added to variable rate											1.00%
Line of Credit | Revolving Credit Facility Due March 2022 | Minimum | LIBOR
Line of Credit Facility
Debt instrument, variable rate											2.00%
Line of Credit | Revolving Credit Facility Due March 2022 | Minimum | Base Rate
Line of Credit Facility
Debt instrument, variable rate											1.00%
Line of Credit | Revolving Credit Facility Due March 2022 | Maximum | LIBOR
Line of Credit Facility
Debt instrument, variable rate											3.25%
Line of Credit | Revolving Credit Facility Due March 2022 | Maximum | Base Rate
Line of Credit Facility
Debt instrument, variable rate											2.25%

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