Financial Risk Management Activities - Additional Information (Detail) - Commodity Options / Collars bbl / d in Thousands, bbl in Thousands, MMBbls in Millions, $ in Millions	3 Months Ended
Mar. 31, 2022 USD ($) MMBbls bbl $ / bbl	Dec. 31, 2021 MMBbls bbl / d $ / bbl
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of crude oil \| MMBbls	41.3	54.8
Premiums paid to purchase option contracts \| $	$ 325
West Texas Intermediate
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of crude oil	90	90
Average monthly floor price (US dollar per barrel)	60	60
Average monthly ceiling price (US dollar per barrel)		100
Average monthly selling price (US dollar per barrel)	100
Brent
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of crude oil	60	60
Average monthly floor price (US dollar per barrel)	65	65
Average monthly ceiling price (US dollar per barrel)		105
Average monthly selling price (US dollar per barrel)	105

Average monthly selling price

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- Definition

Amount paid to purchase offsetting call options to remove the ceiling price on WTI / Brent collar options

+ References

No definition available.

+ Details

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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.

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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.

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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.

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- Definition

Nominal number of units used to calculate payment on derivative.

+ References

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