Acquisition - Pro Forma Information (Details) - Black Diamond Acquisition - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Revenues	$ 121,971	$ 78,016	$ 230,216	$ 158,275
Net Income	44,442	32,688	81,092	61,915
Net Income Attributable to Noble Midstream Partners LP	$ 36,584	$ 27,159	$ 74,279	$ 47,682
Common Units
Net Income Attributable to Limited Partners Per Limited Partner Unit — Basic and Diluted
Earnings per unit, basic and diluted (in usd per unit)	$ 0.90	$ 0.85	$ 1.83	$ 1.49
Subordinated Units
Net Income Attributable to Limited Partners Per Limited Partner Unit — Basic and Diluted
Earnings per unit, basic and diluted (in usd per unit)	$ 0.90	$ 0.85	$ 1.83	$ 1.49