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Derivatives and Risk Management Activities - Fair Value (Details) - Recurring Fair Value Measures - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Recurring Fair Value Measurements
Total net derivative asset/(liability)	$ (7)	$ 24
Level 1
Recurring Fair Value Measurements
Total net derivative asset/(liability)	12	11
Level 2
Recurring Fair Value Measurements
Total net derivative asset/(liability)	(19)	13
Commodity derivatives
Recurring Fair Value Measurements
Total net derivative asset/(liability)	9	(3)
Commodity derivatives | Level 1
Recurring Fair Value Measurements
Total net derivative asset/(liability)	12	11
Commodity derivatives | Level 2
Recurring Fair Value Measurements
Total net derivative asset/(liability)	(3)	(14)
Interest rate derivatives
Recurring Fair Value Measurements
Total net derivative asset/(liability)	33	27
Interest rate derivatives | Level 2
Recurring Fair Value Measurements
Total net derivative asset/(liability)	33	27
Foreign currency derivatives
Recurring Fair Value Measurements
Total net derivative asset/(liability)	(49)	0
Foreign currency derivatives | Level 1
Recurring Fair Value Measurements
Total net derivative asset/(liability)	0	0
Foreign currency derivatives | Level 2
Recurring Fair Value Measurements
Total net derivative asset/(liability)	$ (49)	$ 0

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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