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ACQUISITIONS AND DIVESTITURES-Monument Draw Assets (Details) $ in Millions	Jan. 09, 2018 USD ($)
Northern Tract | Ward County Assets
ACQUISITIONS AND DIVESTITURES
Purchase price	$ 108.2

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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