Segment Information - Segment Financial Data (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Revenues:
Total revenues	$ 11,578	$ 12,456	$ 33,698	$ 36,854
Significant segment expenses:
Purchases and related costs	(10,585)	(11,540)	(30,862)	(34,086)
Field operating costs	(288)	(408)	(873)	(962)
Segment general and administrative expenses	(83)	(86)	(251)	(246)
Total significant segment expenses	(10,956)	(12,034)	(31,986)	(35,294)
Equity earnings in unconsolidated entities	96	97	292	298
Other segment items:
Total other segment items	(135)	43	(295)	(177)
Significant segment expenses:	583	562	1,709	1,681
Investment and acquisition capital expenditures	305	106	1,308	367
Maintenance capital expenditures	36	50	112	140
Investments in unconsolidated entities	2,873		2,873		$ 2,811
Product sales revenues
Revenues:
Total revenues	11,150	12,021	32,389	35,606
Services
Revenues:
Total revenues	428	435	1,309	1,248
Operating Segments
Revenues:
Total revenues	11,583	12,464	33,712	36,867
Operating Segments \| Crude Oil
Revenues:
Total revenues	11,559	12,444	33,620	36,761
Significant segment expenses:
Purchases and related costs	(10,572)	(11,529)	(30,802)	(34,014)
Field operating costs	(281)	(400)	(853)	(938)
Segment general and administrative expenses	(74)	(78)	(229)	(223)
Total significant segment expenses	(10,927)	(12,007)	(31,884)	(35,175)
Equity earnings in unconsolidated entities	96	97	292	298
Other segment items:
Depreciation and amortization of unconsolidated entities	21	22	62	59
Derivative activities and inventory valuation adjustments	(30)	(13)	(2)	20
Long-term inventory costing adjustments	10	34	27	10
Deficiencies under minimum volume commitments, net	(6)	15	(21)	10
Equity-indexed compensation expense	10	9	28	28
Foreign currency revaluation	(3)	2	6	(18)
Transaction-related expenses			7
Segment amounts attributable to noncontrolling interests	(137)	(146)	(402)	(406)
Total other segment items	(135)	43	(295)	(177)
Significant segment expenses:	593	577	1,733	1,707
Investment and acquisition capital expenditures	305	106	1,308	367
Maintenance capital expenditures	36	48	110	135
Investments in unconsolidated entities	2,873		2,873		2,811
Operating Segments \| Crude Oil \| Line 901 Incident
Other segment items:
Line 901 incident		(120)		120
Operating Segments \| Crude Oil \| Product sales revenues
Revenues:
Total revenues	11,132	12,009	32,313	35,515
Operating Segments \| Crude Oil \| Services
Revenues:
Total revenues	427	435	1,307	1,246
Operating Segments \| NGL
Revenues:
Total revenues	24	20	92	106
Significant segment expenses:
Purchases and related costs	(18)	(19)	(74)	(85)
Field operating costs	(7)	(8)	(20)	(24)
Segment general and administrative expenses	(9)	(8)	(22)	(23)
Total significant segment expenses	(34)	(35)	(116)	(132)
Other segment items:
Depreciation and amortization of unconsolidated entities	0
Derivative activities and inventory valuation adjustments	0
Long-term inventory costing adjustments	0
Total other segment items	0	0	0	0
Significant segment expenses:	(10)	(15)	(24)	(26)
Maintenance capital expenditures	0	2	2	5
Investments in unconsolidated entities	0		0		$ 0
Operating Segments \| NGL \| Product sales revenues
Revenues:
Total revenues	22	19	88	103
Operating Segments \| NGL \| Services
Revenues:
Total revenues	2	1	4	3
Intersegment revenues elimination
Revenues:
Total revenues	(5)	(8)	(14)	(13)
Significant segment expenses:
Purchases and related costs	5	8	14	13
Field operating costs	0
Segment general and administrative expenses	0
Total significant segment expenses	5	8	14	13
Intersegment revenues elimination \| Product sales revenues
Revenues:
Total revenues	(4)	(7)	(12)	(12)
Intersegment revenues elimination \| Services
Revenues:
Total revenues	$ (1)	$ (1)	$ (2)	$ (1)

Includes the impact of amounts billed to counterparties for their deficiency obligation, net of applicable amounts subsequently recognized into revenue. Certain agreements require counterparties to deliver, transport or throughput a minimum volume over an agreed upon period. Substantially all of such agreements were entered into with counterparties to economically support the return on the reporting entity's capital expenditure necessary to construct the related asset. Some of these agreements include make-up rights if the minimum volume is not met. A receivable from the counterparty is recorded in the period that services are provided or when the transaction occurs, including amounts for deficiency obligations from counterparties associated with minimum volume commitments. If a counterparty has a make-up right associated with a deficiency, the revenue attributable to the counterparty’s make-up right is deferred and is subsequently recognized at the earlier of when the deficiency volume is delivered or shipped, when the make-up right expires or when it is determined that the counterparty’s ability to utilize the make-up right is remote.

No definition available.