Business Segments and Related Information - Schedule of Revenues and Costs and Expenses Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Consolidated Revenues [Abstract]
Revenues	$ 18,269	$ 11,363	$ 32,655	$ 26,780
Operating Costs and Expenses [Abstract]
Cost of sales	14,160	7,899	24,838	19,904
Other operating costs and expenses	1,193	1,063	2,327	2,122
Depreciation, amortization and accretion	705	626	1,387	1,244
Asset impairment charges	9	11	17	21
Net gains attributable to asset sales and related matters	(2)	(7)	(1)	(9)
General and administrative costs	64	68	128	128
Total costs and expenses	16,129	9,660	28,696	23,410
NGL Pipelines & Services
Consolidated Revenues [Abstract]
Revenues	5,234	3,406	9,266	8,806
Crude Oil Pipelines & Services
Consolidated Revenues [Abstract]
Revenues	8,339	4,783	14,638	9,904
Natural Gas Pipelines & Services
Consolidated Revenues [Abstract]
Revenues	659	1,071	1,766	2,292
Petrochemical & Refined Products Services
Consolidated Revenues [Abstract]
Revenues	$ 4,037	$ 2,103	$ 6,985	$ 5,778