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Derivatives - Open Commodity Derivative Contracts (Details) - Oil Price Swaps, January 2018 - December 2018	12 Months Ended
	Dec. 31, 2019 $ / bbl MBbls
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional (Bbl) | MBbls	273,000
Weighted Avg. Fixed Price (Oil in USD/bbl, Natural Gas in USD/mcf) | $ / bbl	61.05

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- Definition

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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- Definition

Nominal volume used to calculate payments on a derivative instrument.

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- Definition

Average fixed price related to the group of price risk swap derivatives.

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