Transactions with Affiliates (Details) - Oasis - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Related Party Transaction [Line Items]
General and administrative	$ 7.6	$ 7.8
Commercial Agreements with OPNA, Oasis Petroleum Marketing LLC (“OPM”) and OMS
Related Party Transaction [Line Items]
Term of contractual arrangements	15 years
Commercial Agreements with OPNA, Oasis Petroleum Marketing LLC (“OPM”) and OMS | Centralized Corporate, General and Administrative Services
Related Party Transaction [Line Items]
Term of contractual arrangements	15 years