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Length Of Pipeline

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Number Of Pipelines

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Shares Issued, Price Per Share, Net

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, before accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The number of units or percentage investment held by one or more members or limited partners of the LLC or LP.

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The cumulative amount of offering costs allocated to the limited partners.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Monetary value of the issuance of new units of limited partnership interest in a public offering.

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Total units issued during the year due to the sale of units. All partners include general, limited and preferred partners.

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Cash outflow to owners or shareholders, excluding ordinary dividends. Includes special dividends.

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The cash inflow associated with the amount received from entity's first offering of stock to the public.

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Per share or per unit amount of equity securities issued.

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The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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Organization and Nature of Operations (Details) $ / shares in Units, $ in Thousands		3 Months Ended	12 Months Ended
	Sep. 20, 2016 USD ($) Pipeline $ / shares shares	Dec. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) mi	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Debt Instrument [Line Items]
Proceeds, net		$ 298,968
Distribution			$ 296,820	$ 0	$ 0
Colorado River DevCo LP
Debt Instrument [Line Items]
Controlling interest	80.00%
Noncontrolling interest	20.00%
San Juan River DevCo LP
Debt Instrument [Line Items]
Controlling interest	25.00%
Noncontrolling interest	75.00%
Green River DevCo LP
Debt Instrument [Line Items]
Controlling interest	25.00%
Noncontrolling interest	75.00%
Laramie River DevCo LP
Debt Instrument [Line Items]
Controlling interest	100.00%
Blanco River DevCo LP
Debt Instrument [Line Items]
Controlling interest	25.00%
Noncontrolling interest	75.00%
Gunnison River DevCo LP
Debt Instrument [Line Items]
Controlling interest	5.00%
Noncontrolling interest	95.00%
White Cliffs Pipeline
Debt Instrument [Line Items]
Non-controlling ownership	3.33%
Number of pipelines \| Pipeline	2
Length (miles) \| mi			527
Noble Energy \| Noble Energy
Debt Instrument [Line Items]
Initial term			15 years
Noble Energy \| Common Units \| Noble Energy
Debt Instrument [Line Items]
Sold (in units) \| shares	1,527,584
Ownership	4.80%
Noble Energy \| Subordinated Units \| Noble Energy
Debt Instrument [Line Items]
Sold (in units) \| shares	15,902,584
Ownership	50.00%
IPO
Debt Instrument [Line Items]
Offering costs	$ 24,400
Distribution	$ 296,800
IPO \| Common Units
Debt Instrument [Line Items]
Sold (in units) \| shares	14,375,000
Price ($ per unit) \| $ / shares	$ 22.50
Price, net ($ per unit) \| $ / shares	$ 21.20625
Proceeds	$ 323,400
Proceeds, net	$ 299,000
Over-Allotment Option \| Common Units
Debt Instrument [Line Items]
Sold (in units) \| shares	1,875,000
Revolving Credit Facility
Debt Instrument [Line Items]
Debt expense	$ 1,900