Financial Risk Management Activities - Additional Information (Detail) - Commodity Options / Collars bbl in Thousands, MMBbls in Millions	Sep. 30, 2023 MMBbls bbl $ / bbl	Dec. 31, 2022 MMBbls
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of crude oil \| MMBbls	12.0	0.0
West Texas Intermediate
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of crude oil \| bbl	80
Average monthly floor price (US dollar per barrel) \| $ / bbl	70
Brent
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of crude oil \| bbl	50
Average monthly floor price (US dollar per barrel) \| $ / bbl	75

Nominal number of units used to calculate payment on derivative.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-1B

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-1A

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Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant