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Transactions (Details) $ in Millions			3 Months Ended					9 Months Ended		46 Months Ended
	Dec. 11, 2024	Feb. 17, 2021 tranche	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2021
Transactions
Additional working and royalty interests acquired, before closing adjustments			$ 260
Drilling Partnership | QL
Transactions
Number of annual tranches | tranche		4
Percent of total development capital funded by drilling partner				20.00%		15.00%	15.00%			20.00%	20.00%
Amount of carry received from drilling partner.				$ 32		$ 29	$ 29
Gain (loss) on interests conveyed										$ 0
Drilling Partnership | Unaffiliated third-party
Transactions
Gain (loss) on interests conveyed			$ 0		$ 0			$ 0	$ 0
Third-party interest in each well spud	15.00%
Drilling Partnership | Unaffiliated third-party | Minimum
Transactions
Percentage of total development capital expenses	15.00%

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- Definition

Amount of carry received from drilling partner.

+ References

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- Definition

The cash outflow to purchase of mineral interests in oil and gas properties for use in the normal oil and gas operations and not intended for resale, before closing adjustments.

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- Definition

Represents the percentage of total development expenses to be funded by third party for each well spud.

+ References

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- Definition

The percentage of total development capital spending to be funded by drilling partner under a drilling partnership.

+ References

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- Definition

Percentage of working interest in each well spud during the calendar year.

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 808
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479402/808-10-50-1

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- Definition

Amount of gain (loss) on sale or disposal of property with proven oil and gas reserves.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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