Derivative Instruments - Financial Instruments for Hedging Volume (Details)	Dec. 31, 2019 USD ($) bbl
Hedge Period Ending Next Year
Derivative Instruments, Gain (Loss) [Line Items]
Hedge Backed Oil Volume | bbl	5,857,500
Weighted Average Price, Hedge Backed Oil Volumes | $	58.32
Hedge Period Ending In Two Years
Derivative Instruments, Gain (Loss) [Line Items]
Hedge Backed Oil Volume | bbl	911,000
Weighted Average Price, Hedge Backed Oil Volumes | $	53.42