Revenues - Schedule of Revenues by Business Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Revenues	$ 18,269	$ 11,363	$ 32,655	$ 26,780
NGL Pipelines & Services
Disaggregation of Revenue [Line Items]
Revenues	5,234	3,406	9,266	8,806
NGL Pipelines & Services | Sales of NGLs and related products
Disaggregation of Revenue [Line Items]
Revenues	4,475	2,723	7,744	7,374
NGL Pipelines & Services | Total segment midstream services
Disaggregation of Revenue [Line Items]
Revenues	759	683	1,522	1,432
NGL Pipelines & Services | Natural gas processing and fractionation
Disaggregation of Revenue [Line Items]
Revenues	393	296	735	648
NGL Pipelines & Services | Transportation
Disaggregation of Revenue [Line Items]
Revenues	286	308	612	620
NGL Pipelines & Services | Storage and terminals
Disaggregation of Revenue [Line Items]
Revenues	80	79	175	164
Crude Oil Pipelines & Services
Disaggregation of Revenue [Line Items]
Revenues	8,339	4,783	14,638	9,904
Crude Oil Pipelines & Services | Sales of crude oil
Disaggregation of Revenue [Line Items]
Revenues	8,052	4,479	14,057	9,304
Crude Oil Pipelines & Services | Total segment midstream services
Disaggregation of Revenue [Line Items]
Revenues	287	304	581	600
Crude Oil Pipelines & Services | Transportation
Disaggregation of Revenue [Line Items]
Revenues	178	195	356	384
Crude Oil Pipelines & Services | Storage and terminals
Disaggregation of Revenue [Line Items]
Revenues	109	109	225	216
Natural Gas Pipelines & Services
Disaggregation of Revenue [Line Items]
Revenues	659	1,071	1,766	2,292
Natural Gas Pipelines & Services | Sales of natural gas
Disaggregation of Revenue [Line Items]
Revenues	165	632	797	1,417
Natural Gas Pipelines & Services | Total segment midstream services
Disaggregation of Revenue [Line Items]
Revenues	494	439	969	875
Natural Gas Pipelines & Services | Transportation
Disaggregation of Revenue [Line Items]
Revenues	494	439	969	875
Petrochemical & Refined Products Services
Disaggregation of Revenue [Line Items]
Revenues	4,037	2,103	6,985	5,778
Petrochemical & Refined Products Services | Sales of petrochemicals and refined products
Disaggregation of Revenue [Line Items]
Revenues	3,694	1,775	6,293	5,101
Petrochemical & Refined Products Services | Total segment midstream services
Disaggregation of Revenue [Line Items]
Revenues	343	328	692	677
Petrochemical & Refined Products Services | Transportation
Disaggregation of Revenue [Line Items]
Revenues	166	157	345	332
Petrochemical & Refined Products Services | Storage and terminals
Disaggregation of Revenue [Line Items]
Revenues	91	87	174	158
Petrochemical & Refined Products Services | Fractionation and isomerization
Disaggregation of Revenue [Line Items]
Revenues	$ 86	$ 84	$ 173	$ 187