Net Income Per Limited Partner Unit - Calculation of Net Income per Limited Partner Units (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Noble Midstream Partners LP									$ 159,996	$ 162,734	$ 140,572
Less: Net Income Attributable to Incentive Distribution Rights									13,967	5,836	835
Net Income Attributable to Limited Partners	$ 39,396	$ 34,812	$ 31,769	$ 40,052	$ 39,751	$ 43,155	$ 35,450	$ 38,542	$ 146,029	$ 156,898	$ 139,737
Antidilutive Restricted Units (in shares)									54	24	4
Common Units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Limited Partners									$ 123,662	$ 93,875	$ 75,076
Net Income Attributable to Limited Partners Per Limited Partner Unit — Basic (in dollars per share)									$ 3.09	$ 3.96	$ 4.10
Net Income Attributable to Limited Partners Per Limited Partner Unit — Diluted (in dollars per share)									$ 3.08	$ 3.96	$ 4.10
Weighted Average Limited Partner Units Outstanding — Basic (in shares)									40,083	23,686	18,192
Weighted Average Limited Partner Units Outstanding — Diluted (in shares)									40,105	23,701	18,204
Subordinated Units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Limited Partners									$ 22,367	$ 63,023	$ 64,661
Net Income Attributable to Limited Partners Per Limited Partner Unit — Basic (in dollars per share)									$ 3.86	$ 3.96	$ 4.10
Net Income Attributable to Limited Partners Per Limited Partner Unit — Diluted (in dollars per share)									$ 3.86	$ 3.96	$ 4.10
Weighted Average Limited Partner Units Outstanding — Basic (in shares)									5,795	15,903	15,903
Weighted Average Limited Partner Units Outstanding — Diluted (in shares)									5,795	15,903	15,903