Derivatives - Derivative Instruments (Details) $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($) MMBbls $ / Barrel
Derivative [Line Items]
Cash received \| $	$ 322
Crude Oil \| 2020 Settlement
Derivative [Line Items]
Derivative instruments (mmbls/day) \| MMBbls	64.4
Crude Oil \| 2020 Settlement \| Short position
Derivative [Line Items]
Ceiling sold price (dollars per barrel)	74.16
Purchase price (dollars per barrel)	45.00
Crude Oil \| 2020 Settlement \| Long position
Derivative [Line Items]
Purchase price (dollars per barrel)	55.00
Crude Oil \| 2021 Settlement
Derivative [Line Items]
Derivative instruments (mmbls/day) \| MMBbls	127.8
Crude Oil \| 2021 Settlement \| Short position
Derivative [Line Items]
Ceiling sold price (dollars per barrel)	74.16

Derivative, Contractual Commodity, Price

No definition available.

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- Definition

The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

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- Definition

The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

+ References

No definition available.

+ Details

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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.

+ References

No definition available.

+ Details

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- Definition

The cash inflow provided by derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

+ Details

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