Business Segments and Related Information, Segment Reporting Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Information by business segment [Abstract]
Segment gross operating margin	$ 2,342	$ 2,080	$ 6,990	$ 6,428
Revenues from third parties	15,448	10,801	44,481	29,383
Revenues from related parties	20	31	55	54
Intersegment and intrasegment revenues	0	0	0	0
Total revenues	15,468	10,832	44,536	29,437
Equity in income of unconsolidated affiliates	111	137	335	447
Property, plant and equipment, net	44,167		44,167		$ 42,088
Investments in unconsolidated affiliates	2,356		2,356		2,428
Intangible assets, net	4,010		4,010		3,151
Goodwill	5,608		5,608		5,449
Segment assets	56,141		56,141		53,116
NGL Pipelines & Services [Member]
Information by business segment [Abstract]
Total revenues	6,237	3,816	18,371	10,987
Equity in income of unconsolidated affiliates	39	31	109	88
Investments in unconsolidated affiliates	645		645		656
Intangible assets, net	874		874		317
Goodwill	2,811		2,811		2,652
Crude Oil Pipelines & Services [Member]
Information by business segment [Abstract]
Total revenues	4,724	3,235	14,181	7,904
Equity in income of unconsolidated affiliates	70	105	221	354
Investments in unconsolidated affiliates	1,676		1,676		1,738
Intangible assets, net	1,798		1,798		1,860
Goodwill	1,841		1,841		1,841
Natural Gas Pipelines & Services [Member]
Information by business segment [Abstract]
Total revenues	1,886	980	4,696	3,276
Equity in income of unconsolidated affiliates	2	1	4	4
Investments in unconsolidated affiliates	32		32		31
Intangible assets, net	1,218		1,218		849
Goodwill	0		0		0
Petrochemical & Refined Products Services [Member]
Information by business segment [Abstract]
Total revenues	2,621	2,801	7,288	7,270
Equity in income of unconsolidated affiliates	0	0	1	1
Investments in unconsolidated affiliates	3		3		3
Intangible assets, net	120		120		125
Goodwill	956		956		956
Reportable Business Segments [Member] | NGL Pipelines & Services [Member]
Information by business segment [Abstract]
Segment gross operating margin	1,296	1,023	3,848	3,207
Revenues from third parties	6,232	3,815	18,358	10,980
Revenues from related parties	5	1	13	7
Intersegment and intrasegment revenues	14,666	13,753	52,079	37,140
Total revenues	20,903	17,569	70,450	48,127
Equity in income of unconsolidated affiliates	39	31	109	88
Property, plant and equipment, net	17,409		17,409		17,202
Investments in unconsolidated affiliates	645		645		656
Intangible assets, net	874		874		317
Goodwill	2,811		2,811		2,652
Segment assets	21,739		21,739		20,827
Reportable Business Segments [Member] | Crude Oil Pipelines & Services [Member]
Information by business segment [Abstract]
Segment gross operating margin	415	423	1,237	1,242
Revenues from third parties	4,720	3,210	14,163	7,868
Revenues from related parties	4	25	18	36
Intersegment and intrasegment revenues	13,456	6,612	35,327	21,908
Total revenues	18,180	9,847	49,508	29,812
Equity in income of unconsolidated affiliates	70	105	221	354
Property, plant and equipment, net	6,809		6,809		6,974
Investments in unconsolidated affiliates	1,676		1,676		1,738
Intangible assets, net	1,798		1,798		1,860
Goodwill	1,841		1,841		1,841
Segment assets	12,124		12,124		12,413
Reportable Business Segments [Member] | Natural Gas Pipelines & Services [Member]
Information by business segment [Abstract]
Segment gross operating margin	278	223	727	960
Revenues from third parties	1,875	975	4,672	3,265
Revenues from related parties	11	5	24	11
Intersegment and intrasegment revenues	262	146	683	441
Total revenues	2,148	1,126	5,379	3,717
Equity in income of unconsolidated affiliates	2	1	4	4
Property, plant and equipment, net	9,737		9,737		8,560
Investments in unconsolidated affiliates	32		32		31
Intangible assets, net	1,218		1,218		849
Goodwill	0		0		0
Segment assets	10,987		10,987		9,440
Reportable Business Segments [Member] | Petrochemical & Refined Products Services [Member]
Information by business segment [Abstract]
Segment gross operating margin	353	411	1,178	1,019
Revenues from third parties	2,621	2,801	7,288	7,270
Revenues from related parties	0	0	0	0
Intersegment and intrasegment revenues	5,934	6,150	14,446	18,980
Total revenues	8,555	8,951	21,734	26,250
Equity in income of unconsolidated affiliates	0	0	1	1
Property, plant and equipment, net	7,742		7,742		7,736
Investments in unconsolidated affiliates	3		3		3
Intangible assets, net	120		120		125
Goodwill	956		956		956
Segment assets	8,821		8,821		8,820
Eliminations [Member]
Information by business segment [Abstract]
Revenues from third parties	0	0	0	0
Revenues from related parties	0	0	0	0
Intersegment and intrasegment revenues	(34,318)	(26,661)	(102,535)	(78,469)
Total revenues	(34,318)	(26,661)	(102,535)	(78,469)
Equity in income of unconsolidated affiliates	0	$ 0	0	$ 0
Adjustments [Member]
Information by business segment [Abstract]
Property, plant and equipment, net	2,470		2,470		1,616
Investments in unconsolidated affiliates	0		0		0
Intangible assets, net	0		0		0
Goodwill	0		0		0
Segment assets	$ 2,470		$ 2,470		$ 1,616