Business Segments and Related Information, Consolidated Revenues and Expenses (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Consolidated Revenues [Abstract]
Total consolidated revenues		$ 14,760	$ 12,444
Operating costs and expenses:
Cost of sales	[1]	11,405	9,331
Other operating costs and expenses	[2]	954	868
Depreciation, amortization and accretion		595	547
Asset impairment charges		20	13
Net gains attributable to asset sales and related matters		0	(2)
General and administrative costs		66	57
Total consolidated costs and expenses		13,040	10,814
NGL Pipelines & Services [Member]
Consolidated Revenues [Abstract]
Total consolidated revenues		5,140	4,929
Crude Oil Pipelines & Services [Member]
Consolidated Revenues [Abstract]
Total consolidated revenues		5,415	4,181
Natural Gas Pipelines & Services [Member]
Consolidated Revenues [Abstract]
Total consolidated revenues		854	1,215
Petrochemical & Refined Products Services [Member]
Consolidated Revenues [Abstract]
Total consolidated revenues		$ 3,351	$ 2,119

[1] Cost of sales is a component of “Operating costs and expenses” as presented on our Unaudited Condensed Statements of Consolidated Operations.  Fluctuations in these amounts are primarily due to changes in energy commodity prices and sales volumes associated with our marketing activities.

[2] Represents the cost of operating our plants, pipelines and other fixed assets excluding depreciation, amortization and accretion charges; asset impairment charges; and net losses (or gains) attributable to asset sales and related matters.