Offerings and Acquisition - Pro Forma Information (Details) - Black Diamond Acquisition - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Revenues	$ 703,801	$ 569,247	$ 405,500
Net Income	245,467	214,234	136,071
Net Income Attributable to Noble Midstream Partners LP	$ 159,996	$ 161,068	$ 123,375
Common Units
Net Income Attributable to Limited Partners Per Limited Partner Unit — Basic
Net Income Attributable to Limited Partners Per Limited Partner Common and Subordinated Unit - Basic (in usd per share)	$ 3.09	$ 3.92	$ 3.59
Net Income Attributable to Limited Partners Per Limited Partner Common and Subordinated Unit - Diluted (in usd per share)	3.08	3.92	3.59
Subordinated Units
Net Income Attributable to Limited Partners Per Limited Partner Unit — Basic
Net Income Attributable to Limited Partners Per Limited Partner Common and Subordinated Unit - Basic (in usd per share)	3.86	3.92	3.59
Net Income Attributable to Limited Partners Per Limited Partner Common and Subordinated Unit - Diluted (in usd per share)	$ 3.86	$ 3.92	$ 3.59