Segment Disclosures Recon from Segment to Consolidated - Revenues (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021	Dec. 31, 2020
Segment revenues [Line Items]
Revenues		$ 10,965		$ 10,627	$ 7,719
Other financial information:
Additions to long-lived assets		3,598		1,855	1,283
Proportional Modified EBITDA Equity Method Investments		979		970	749
Intersegment Eliminations [Member]
Segment revenues [Line Items]
Revenues		(1,329)		(1,375)	(467)
Other financial information:
Additions to long-lived assets		0		0	0
Proportional Modified EBITDA Equity Method Investments		0		0	0
Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]
Segment revenues [Line Items]
Revenues		4,047		3,786	3,469
Other financial information:
Additions to long-lived assets		1,420		861	706
Proportional Modified EBITDA Equity Method Investments		193		183	166
Operating Segments [Member] | Northeast G And P [Member]
Segment revenues [Line Items]
Revenues		1,802		1,634	1,529
Other financial information:
Additions to long-lived assets		261		164	137
Proportional Modified EBITDA Equity Method Investments		654		682	473
Operating Segments [Member] | West [Member]
Segment revenues [Line Items]
Revenues		2,561		2,026	1,523
Other financial information:
Additions to long-lived assets		1,507		209	318
Proportional Modified EBITDA Equity Method Investments		132		105	110
Operating Segments [Member] | Gas & NGL Marketing Services
Segment revenues [Line Items]
Revenues		3,233	[1]	4,211	1,631
Other financial information:
Additions to long-lived assets		4		1	0
Proportional Modified EBITDA Equity Method Investments		0		0	0
Operating Segments [Member] | Other [Member]
Segment revenues [Line Items]
Revenues		651		345	34
Other financial information:
Additions to long-lived assets		406		620	122
Proportional Modified EBITDA Equity Method Investments		0		0	0
Service [Member]
Segment revenues [Line Items]
Revenues		6,536		6,001	5,924
Service [Member] | Transmission And Gulf Of Mexico [Member]
Segment revenues [Line Items]
Revenues		3,461		3,310	3,207
Service [Member] | Northeast G And P [Member]
Segment revenues [Line Items]
Revenues		1,613		1,490	1,416
Service [Member] | West [Member]
Segment revenues [Line Items]
Revenues		1,443		1,178	1,248
Service [Member] | Gas & NGL Marketing Services
Segment revenues [Line Items]
Revenues		3	[1]	3	32
Service [Member] | Other [Member]
Segment revenues [Line Items]
Revenues		16		20	21
Service [Member] | Intersegment Eliminations [Member]
Segment revenues [Line Items]
Revenues		(266)		(195)	(136)
Service [Member] | Intersegment Eliminations [Member] | Transmission And Gulf Of Mexico [Member]
Segment revenues [Line Items]
Revenues		(118)		(75)	(50)
Service [Member] | Intersegment Eliminations [Member] | Northeast G And P [Member]
Segment revenues [Line Items]
Revenues		(41)		(38)	(49)
Service [Member] | Intersegment Eliminations [Member] | West [Member]
Segment revenues [Line Items]
Revenues		(99)		(70)	(24)
Service [Member] | Intersegment Eliminations [Member] | Gas & NGL Marketing Services
Segment revenues [Line Items]
Revenues		0	[1]	0	0
Service [Member] | Intersegment Eliminations [Member] | Other [Member]
Segment revenues [Line Items]
Revenues		(8)		(12)	(13)
Service [Member] | Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]
Segment revenues [Line Items]
Revenues		3,579		3,385	3,257
Service [Member] | Operating Segments [Member] | Northeast G And P [Member]
Segment revenues [Line Items]
Revenues		1,654		1,528	1,465
Service [Member] | Operating Segments [Member] | West [Member]
Segment revenues [Line Items]
Revenues		1,542		1,248	1,272
Service [Member] | Operating Segments [Member] | Gas & NGL Marketing Services
Segment revenues [Line Items]
Revenues		3	[1]	3	32
Service [Member] | Operating Segments [Member] | Other [Member]
Segment revenues [Line Items]
Revenues		24		32	34
NonRegulated Service Commodity Consideration [Member]
Segment revenues [Line Items]
Revenues		260		238	129
NonRegulated Service Commodity Consideration [Member] | Intersegment Eliminations [Member]
Segment revenues [Line Items]
Revenues		0		0	0
NonRegulated Service Commodity Consideration [Member] | Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]
Segment revenues [Line Items]
Revenues		64		52	21
NonRegulated Service Commodity Consideration [Member] | Operating Segments [Member] | Northeast G And P [Member]
Segment revenues [Line Items]
Revenues		14		7	7
NonRegulated Service Commodity Consideration [Member] | Operating Segments [Member] | West [Member]
Segment revenues [Line Items]
Revenues		182		179	101
NonRegulated Service Commodity Consideration [Member] | Operating Segments [Member] | Gas & NGL Marketing Services
Segment revenues [Line Items]
Revenues		0	[1]	0	0
NonRegulated Service Commodity Consideration [Member] | Operating Segments [Member] | Other [Member]
Segment revenues [Line Items]
Revenues		0		0	0
Product [Member]
Segment revenues [Line Items]
Revenues		4,556		4,536	1,671
Product [Member] | Transmission And Gulf Of Mexico [Member]
Segment revenues [Line Items]
Revenues		228		231	144
Product [Member] | Northeast G And P [Member]
Segment revenues [Line Items]
Revenues		28		13	16
Product [Member] | West [Member]
Segment revenues [Line Items]
Revenues		145		60	20
Product [Member] | Gas & NGL Marketing Services
Segment revenues [Line Items]
Revenues		4,052	[1]	4,094	1,491
Product [Member] | Other [Member]
Segment revenues [Line Items]
Revenues		103		138	0
Product [Member] | Intersegment Eliminations [Member]
Segment revenues [Line Items]
Revenues		(1,063)		(1,180)	(331)
Product [Member] | Intersegment Eliminations [Member] | Transmission And Gulf Of Mexico [Member]
Segment revenues [Line Items]
Revenues		(176)		(118)	(47)
Product [Member] | Intersegment Eliminations [Member] | Northeast G And P [Member]
Segment revenues [Line Items]
Revenues		(106)		(86)	(41)
Product [Member] | Intersegment Eliminations [Member] | West [Member]
Segment revenues [Line Items]
Revenues		(696)		(583)	(132)
Product [Member] | Intersegment Eliminations [Member] | Gas & NGL Marketing Services
Segment revenues [Line Items]
Revenues		518	[1]	(198)	(111)
Product [Member] | Intersegment Eliminations [Member] | Other [Member]
Segment revenues [Line Items]
Revenues		(603)		(195)	0
Product [Member] | Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]
Segment revenues [Line Items]
Revenues		404		349	191
Product [Member] | Operating Segments [Member] | Northeast G And P [Member]
Segment revenues [Line Items]
Revenues		134		99	57
Product [Member] | Operating Segments [Member] | West [Member]
Segment revenues [Line Items]
Revenues		841		643	152
Product [Member] | Operating Segments [Member] | Gas & NGL Marketing Services
Segment revenues [Line Items]
Revenues		3,534	[1]	4,292	1,602
Product [Member] | Operating Segments [Member] | Other [Member]
Segment revenues [Line Items]
Revenues		706		333	0
Energy Commodities and Service
Segment revenues [Line Items]
Revenues	[2]	(387)		(148)	(5)
Energy Commodities and Service | Realized Gain (Loss)
Segment revenues [Line Items]
Revenues		(91)		(39)	(5)
Energy Commodities and Service | Unrealized Gain (Loss)
Segment revenues [Line Items]
Revenues		(296)		(109)	0
Energy Commodities and Service | Transmission And Gulf Of Mexico [Member]
Segment revenues [Line Items]
Revenues	[2]	0		0	0
Energy Commodities and Service | Transmission And Gulf Of Mexico [Member] | Realized Gain (Loss)
Segment revenues [Line Items]
Revenues		0		0	0
Energy Commodities and Service | Transmission And Gulf Of Mexico [Member] | Unrealized Gain (Loss)
Segment revenues [Line Items]
Revenues		0		0	0
Energy Commodities and Service | Northeast G And P [Member]
Segment revenues [Line Items]
Revenues	[2]	0		0	0
Energy Commodities and Service | Northeast G And P [Member] | Realized Gain (Loss)
Segment revenues [Line Items]
Revenues		0		0	0
Energy Commodities and Service | Northeast G And P [Member] | Unrealized Gain (Loss)
Segment revenues [Line Items]
Revenues		0		0	0
Energy Commodities and Service | West [Member]
Segment revenues [Line Items]
Revenues	[2]	(4)		(44)	(2)
Energy Commodities and Service | West [Member] | Realized Gain (Loss)
Segment revenues [Line Items]
Revenues		(4)		(44)	(2)
Energy Commodities and Service | West [Member] | Unrealized Gain (Loss)
Segment revenues [Line Items]
Revenues		0		0	0
Energy Commodities and Service | Gas & NGL Marketing Services
Segment revenues [Line Items]
Revenues	[2]	(304)		(84)	(3)
Energy Commodities and Service | Gas & NGL Marketing Services | Realized Gain (Loss)
Segment revenues [Line Items]
Revenues		17		25	(3)
Energy Commodities and Service | Gas & NGL Marketing Services | Unrealized Gain (Loss)
Segment revenues [Line Items]
Revenues		(321)		(109)	0
Energy Commodities and Service | Other [Member]
Segment revenues [Line Items]
Revenues	[2]	(79)		(20)	0
Energy Commodities and Service | Other [Member] | Realized Gain (Loss)
Segment revenues [Line Items]
Revenues		(104)		(20)	0
Energy Commodities and Service | Other [Member] | Unrealized Gain (Loss)
Segment revenues [Line Items]
Revenues		25		0	0
Energy Commodities and Service | Intersegment Eliminations [Member]
Segment revenues [Line Items]
Revenues	[2]	0		0	0
Energy Commodities and Service | Intersegment Eliminations [Member] | Realized Gain (Loss)
Segment revenues [Line Items]
Revenues		0		0	0
Energy Commodities and Service | Intersegment Eliminations [Member] | Unrealized Gain (Loss)
Segment revenues [Line Items]
Revenues		$ 0		$ 0	$ 0

[1] See Note 1 – General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies.

[2] We record transactions that qualify as derivatives at fair value with changes in fair value recognized in earnings in the period of change and characterized as unrealized gains or losses. Gains and losses on derivatives held for energy trading purposes are presented on a net basis in revenue.