Discontinued Operations - Income (Loss) from Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of tax	$ 76	$ 114	$ 281	$ 156
Held-for-Sale \| NGL Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues:	176	287	920	817
Purchases and related costs	(7)	17	245	247
Field operating costs	68	75	190	229
General and administrative expenses	10	12	36	41
Depreciation and amortization	0	31	57	94
(Gains)/losses on asset sales, net	2	1	15	(1)
Total costs and expenses	73	136	543	610
Income from discontinued operations before tax	103	151	377	207
Current income tax expense	(7)	(16)	(61)	(71)
Deferred income tax (expense)/benefit	(20)	(21)	(35)	20
Income from discontinued operations, net of tax	76	114	281	156
Held-for-Sale \| NGL Business \| Product sales
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues:	139	261	818	715
Held-for-Sale \| NGL Business \| Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues:	$ 37	$ 26	$ 102	$ 102

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