Long-Term Debt - Senior Notes (Details) - USD ($)			3 Months Ended
Long-Term Debt - Senior Notes (Details) - USD ($)	Apr. 05, 2019	Mar. 21, 2019	Mar. 31, 2019	Mar. 31, 2018
Long-Term Debt
Proceeds from borrowings of long-term debt			$ 690,000,000	$ 73,830,000
Repayments of long-term debt			$ 629,000,000	$ 61,136,000
Senior Notes
Long-Term Debt
Interest rate (as a percent)			6.00%
Senior Notes \| 6.875% senior notes due April 2027
Long-Term Debt
Debt instrument face amount		$ 500,000,000.0
Interest rate (as a percent)		6.875%	6.875%
Proceeds from borrowings of long-term debt		$ 490,900,000
Debt issuance cost		$ 9,100,000
Senior Notes \| 6.875% senior notes due April 2027 \| Prior to April 1, 2022
Long-Term Debt
Redemption rate (percent)			100.00%
Senior Notes \| 6.875% senior notes due April 2027 \| Prior to April 1, 2022 \| Conditional Event One [Member]
Long-Term Debt
Redemption rate (percent)			106.875%
Maximum aggregate principal redemption prior to Apr.2022 (percentage)			35.00%
Minimum aggregate principal outstanding prior to Apr.2022 (percentage)			65.00%
Senior Notes \| 6.875% senior notes due April 2027 \| On or after April 1, 2022
Long-Term Debt
Redemption rate (percent)			105.156%
Senior Notes \| 6.875% senior notes due April 2027 \| On or after April 1, 2023
Long-Term Debt
Redemption rate (percent)			103.438%
Senior Notes \| 6.875% senior notes due April 2027 \| On or after April 1, 2024
Long-Term Debt
Redemption rate (percent)			101.719%
Senior Notes \| 6.875% senior notes due April 2027 \| Beginning on or after April 1, 2025 and any time after
Long-Term Debt
Redemption rate (percent)			100.00%
Senior Notes \| 6% senior notes due April 2021
Long-Term Debt
Interest rate (as a percent)			6.00%
Senior Notes \| 6% senior notes due April 2021 \| Subsequent Events
Long-Term Debt
Interest rate (as a percent)	6.00%
Repayments of long-term debt	$ 350,000,000.0
Redemption rate (percent)	100.00%

Archrock Partners, L.P. 10-Q