Acquisitions and Divestitures (Details) - USD ($)						1 Months Ended	2 Months Ended
	Jul. 05, 2016	Jun. 15, 2016	Oct. 14, 2015	Apr. 15, 2015	Mar. 31, 2015	Jul. 31, 2016	Sep. 30, 2016
Eagle Ford
Business Acquisition [Line Items]
Initial purchase price					$ 85,000,000
Cash payment for acquisition					83,400,000
Purchase price					$ 84,299,000
Western Catarina Midstream
Business Acquisition [Line Items]
Cash payment for acquisition			$ 345,800,000
Repurchase of units (in units)			105,263
Purchase price			$ 345,840,000
Class A Preferred
Business Acquisition [Line Items]
Price per unit sold				$ 1.60	$ 1.60
Proceeds from preferred units sold				$ 375,000	$ 17,000,000
Class A Preferred | Eagle Ford
Business Acquisition [Line Items]
Shares issued					10,625,000
Price per unit sold					$ 1.60
Proceeds from preferred units sold					$ 17,000,000
Common Units | Eagle Ford
Business Acquisition [Line Items]
Shares issued					105,263
Prior To Stock Split | Common Units | Eagle Ford
Business Acquisition [Line Items]
Shares issued					1,052,632
Carnero Gathering LLC, Joint Venture
Business Acquisition [Line Items]
Payments to acquire interest in joint venture	$ 37,000,000					$ 3,000,000	$ 3,000,000
Assumption of capital commitments in joint venture	$ 7,400,000
Ownership interest (as a percent)	50.00%
TPL South Tex Processing Company LP
Business Acquisition [Line Items]
Ownership interest (as a percent)	50.00%
Gateway Resources U.S.A., Inc.
Business Acquisition [Line Items]
Proceeds from divestiture of business		$ 7,120
Loss on disposition of intangible assets		$ 200,000