Net Income Per Limited Partner Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Noble Midstream Partners LP	$ 36,584	$ 31,592	$ 75,945	$ 55,934
Less: Net Income Attributable to Incentive Distribution Rights	1,134	92	1,953	92
Net Income Attributable to Limited Partners	$ 35,450	$ 31,500	$ 73,992	$ 55,842
Antidilutive Restricted Units (units)	27	7	21	6
Common Units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Limited Partners	$ 21,210	$ 15,862	$ 44,268	$ 28,033
Net Income Attributable to Limited Partners Per Limited Partner Unit — Basic and Diluted (in dollars per unit)	$ 0.90	$ 0.98	$ 1.87	$ 1.75
Weighed Average Limited Partner Units Outstanding, Basic (in units)	23,686	16,127	23,684	16,015
Weighed Average Limited Partner Units Outstanding, Diluted (in units)	23,700	16,137	23,699	16,024
Subordinated Units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Limited Partners Per Limited Partner Unit — Basic and Diluted (in dollars per unit)	$ 0.90	$ 0.98	$ 1.87	$ 1.75
Noble \| Subordinated Units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Limited Partners	$ 14,240	$ 15,638	$ 29,724	$ 27,809
Weighed Average Limited Partner Units Outstanding, Basic (in units)	15,903	15,903	15,903	15,903
Weighed Average Limited Partner Units Outstanding, Diluted (in units)	15,903	15,903	15,903	15,903

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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