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Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Net derivative liability adjustment	$ 4.3
Net derivative asset adjustment			$ 0.5
Commodity forward prices | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated future cash flows, measurement input (percent)		2.50%
Inflation factor | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated future cash flows, measurement input (percent)		2.50%
Market-based Weighted Average Cost of Capital | Discounted Cash Flow | Proved Oil and Gas Properties
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated future cash flows, measurement input (percent)		12.70%
Market-based Weighted Average Cost of Capital | Discounted Cash Flow | Midstream Assets
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Estimated future cash flows, measurement input (percent)		10.40%

X

- Definition

Oil and Gas Properties, Measurement Input

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- Definition

Amount of credit risk valuation adjustment to derivative assets to properly reflect the credit quality of the counterparties.

+ References

No definition available.

+ Details

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- Definition

Amount of credit risk valuation adjustment to derivative liabilities to properly reflect the credit quality of the entity.

+ 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.

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No definition available.

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- Details

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