Business Segments and Related Information, Consolidated Revenues and Expenses (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Consolidated Revenues [Abstract]
Total consolidated revenues		$ 13,008	$ 9,155
Operating costs and expenses:
Cost of sales	[1]	10,098	6,263
Other operating costs and expenses	[2]	757	715
Depreciation, amortization and accretion		526	498
Asset impairment charges		14	66
Net losses attributable to asset sales and related matters		2	11
General and administrative costs		62	56
Total consolidated costs and expenses		11,459	7,609
NGL Pipelines & Services [Member]
Consolidated Revenues [Abstract]
Total consolidated revenues		5,754	3,584
Crude Oil Pipelines & Services [Member]
Consolidated Revenues [Abstract]
Total consolidated revenues		4,072	2,165
Natural Gas Pipelines & Services [Member]
Consolidated Revenues [Abstract]
Total consolidated revenues		1,149	1,587
Petrochemical & Refined Products Services [Member]
Consolidated Revenues [Abstract]
Total consolidated revenues		$ 2,033	$ 1,819

[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.