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Represents the term of agreement.

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Asset Fee

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Represents the assumption of capital commitments in a joint venture.

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The perpetual term of agreement unless terminated.

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Value Of Properties Held, Percentage

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The average consolidated production costs (lifting costs) per unit of production. Costs may include costs incurred to operate and maintain wells and equipment and to pay production taxes.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1204
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-Subparagraph (2)

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Area spaced or assigned to productive wells in which a working interest is owned.

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Fractional interest owned based on working interests or other economic arrangements of area spaced or assigned to productive wells.

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Volume that must be purchased within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

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Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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No definition available.

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Amount paid to managing member or general partner, affiliate of managing member or general partner, or affiliate of limited liability company (LLC) or limited partnership (LP) for administrative services provided to the LLC or LP, for example, but not limited to, salaries, rent, or overhead costs.

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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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The total number of producing oil wells and oil wells capable of production, in which the entity owns a fractional working interest.

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Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date within one year where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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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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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Related Party Transactions (Details) $ in Millions				1 Months Ended	7 Months Ended	9 Months Ended	15 Months Ended	24 Months Ended
Related Party Transactions (Details) $ in Millions	Nov. 22, 2016 USD ($)	Jul. 05, 2016 USD ($)	Oct. 14, 2015 a Mcf bbl	Nov. 30, 2016 USD ($) item shares	Jun. 30, 2017 USD ($)	Sep. 30, 2017 USD ($) a $ / MMBTU	Sep. 30, 2017 USD ($) a	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Related Party Transaction [Line Items]
Related parties, net receivable						$ 6.7	$ 6.7		$ 6.0
Related parties, net payable						$ 6.5	$ 6.5		$ 7.0
Ownership by related parties (as a percentage)						15.40%	15.40%
Sanchez Energy
Related Party Transaction [Line Items]
Agreement term						15 years
Payments to acquire interest in joint venture				$ 25.0
Assumption of capital commitments in joint venture				$ 24.2
Net acres assembled \| a						356,000	356,000
SP Holdings
Related Party Transaction [Line Items]
Percent of value of properties held used to compute quarterly fee						0.375%	0.375%
Maximum asset acquisition, disposition and financing fee (as a percent)						2.00%
Agreement term						10 years
Services Agreement renewal term						1 year
Agreement notice period						180 days
Administrative fee paid						$ 6.5
Seco Pipeline, LLC
Related Party Transaction [Line Items]
Agreement for transported natural gas quantities to SN Catarina (price per unit) \| $ / MMBTU						0.22
Perpetual term of agreement unless terminated						1 month
Carnero Processing Joint Venture
Related Party Transaction [Line Items]
Ownership interest (as a percent)	50.00%			50.00%
Payments to acquire interest in joint venture	$ 55.5				$ 15.8
Assumption of capital commitments in joint venture	$ 24.5
Carnero Processing Joint Venture \| Sanchez Energy
Related Party Transaction [Line Items]
Payments to acquire interest in joint venture				$ 55.5
Assumption of capital commitments in joint venture				$ 24.5
Carnero Gathering LLC, Joint Venture
Related Party Transaction [Line Items]
Agreement term		15 years
Ownership interest (as a percent)		50.00%
Payments to acquire interest in joint venture		$ 37.0				$ 5.1	$ 8.4	$ 8.4
Assumption of capital commitments in joint venture		$ 7.4
TPL South Tex Processing Company LP
Related Party Transaction [Line Items]
Ownership interest (as a percent)	50.00%	50.00%
Acquisition of Wellbore Interests \| Sanchez Energy
Related Party Transaction [Line Items]
Producing wellbores \| item				23
Acquisition of Working Interests \| Sanchez Energy
Related Party Transaction [Line Items]
Producing wellbores \| item				11
Western Catarina Midstream
Related Party Transaction [Line Items]
Agreement term			15 years
Acres dedicated for gathering \| a			35,000
Gathering Agreement delivery commitment period			5 years
Western Catarina Midstream \| Oil
Related Party Transaction [Line Items]
Gathering Agreement minimum quarterly volume delivery commitment \| bbl			10,200
Western Catarina Midstream \| Natural Gas
Related Party Transaction [Line Items]
Gathering Agreement minimum quarterly volume delivery commitment \| Mcf			142,000
Common Units \| Sanchez Energy
Related Party Transaction [Line Items]
Shares repurchased \| shares				2,272,727
Common Units \| Sanchez Energy \| Executive Chairman
Related Party Transaction [Line Items]
Ownership by related parties (as a percentage)						7.40%	7.40%
Common Units \| Sanchez Energy \| Chief Executive Officer
Related Party Transaction [Line Items]
Ownership by related parties (as a percentage)						3.20%	3.20%
Common Units \| Sanchez Energy \| Vice President
Related Party Transaction [Line Items]
Ownership by related parties (as a percentage)						1.10%	1.10%
Common Units \| Sanchez Energy \| President
Related Party Transaction [Line Items]
Ownership by related parties (as a percentage)						1.70%	1.70%