The amount of amortization of the discount on the note receivable.

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The unweighted average first-day-of-the-month commodity price for crude oil or natural gas for each month within the 12-month period prior to the end of the reporting period, adjusted by lease for market differentials (quality, transportation, fees, energy content, and regional price differentials). The SEC provides a complete definition of prices in “Modernization of Oil and Gas Reporting” (Final Rule, Release Nos. 33-8995; 34-59192).

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Amount, after allowance for credit loss, of financing receivable, classified as noncurrent.

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Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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The excess of unamortized costs capitalized within a cost center, less related deferred income taxes, over the cost center ceiling limitation, which is charged to expense for oil and gas producing companies that use full cost method of accounting for investments in oil and gas producing properties.

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Property, Plant and Equipment - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) $ / bbl $ / Mcf	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Restricted cash	$ 101,760,000		$ 101,760,000		$ 0
Notes receivable, net	15,805,000		15,805,000		$ 0
Other Nonoperating Income (Expense) \| Financing Receivable
Property, Plant and Equipment [Line Items]
Interest income	400,000		1,000,000
Future plugging and abandonment obligations
Property, Plant and Equipment [Line Items]
Restricted cash	101,800,000		101,800,000
Notes receivable, net	15,800,000		15,800,000
US
Property, Plant and Equipment [Line Items]
Write-down of oil and natural gas properties	$ 0	$ 0	$ 0	$ 0
US \| Oil (MBbls)
Property, Plant and Equipment [Line Items]
SEC pricing \| $ / bbl			80.46
US \| Gas (MMcf)
Property, Plant and Equipment [Line Items]
SEC pricing \| $ / Mcf			3.58
US \| NGL (MBbls)
Property, Plant and Equipment [Line Items]
SEC pricing \| $ / bbl			20.44