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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Noble Midstream Partners LP									$ 162,734	$ 140,572	$ 28,458
Less: Net Income Attributable to Incentive Distribution Rights									5,836	835	0
Net Income Attributable to Limited Partners	$ 39,751	$ 43,155	$ 35,450	$ 38,542	$ 42,448	$ 41,447	$ 31,500	$ 24,342	$ 156,898	$ 139,737	$ 28,458
Antidilutive Restricted Units (in shares)									24	4	0
Basic
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Limited Partners									$ 93,875	$ 75,076	$ 14,229
Net Income Attributable to Limited Partners Per Limited Partner Unit — Basic and Diluted (in dollars per share)	$ 1.00	$ 1.09	$ 0.9	$ 0.97	$ 1.16	$ 1.15	$ 0.98	$ 0.77	$ 3.96	$ 4.10	$ 0.89
Weighted Average Limited Partner Units Outstanding — Basic (in shares)									23,686	18,192	15,903
Weighted Average Limited Partner Units Outstanding — Diluted (in shares)									23,701	18,204	15,903
Subordinated Units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Limited Partners									$ 63,023	$ 64,661	$ 14,229
Net Income Attributable to Limited Partners Per Limited Partner Unit — Basic and Diluted (in dollars per share)	$ 1.00	$ 1.09	$ 0.9	$ 0.97	$ 1.16	$ 1.15	$ 0.98	$ 0.77	$ 3.96	$ 4.10	$ 0.89
Weighted Average Limited Partner Units Outstanding — Basic (in shares)									15,903	15,903	15,903
Weighted Average Limited Partner Units Outstanding — Diluted (in shares)									15,903	15,903	15,903