v3.24.1.u1
Segment Disclosures Recon from Segment to Consolidated - Revenues (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Segment revenues [Line Items]    
Revenues $ 2,771 $ 3,081
Other financial information:    
Proportional Modified EBITDA Equity Method Investments 228 229
Intersegment Eliminations [Member]    
Segment revenues [Line Items]    
Revenues (248) (186)
Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]    
Segment revenues [Line Items]    
Revenues 1,119 1,007
Operating Segments [Member] | Northeast G And P [Member]    
Segment revenues [Line Items]    
Revenues 509 509
Operating Segments [Member] | West [Member]    
Segment revenues [Line Items]    
Revenues 701 503
Operating Segments [Member] | Gas & NGL Marketing Services    
Segment revenues [Line Items]    
Revenues [1] 570 1,131
Operating Segments [Member] | Other [Member]    
Segment revenues [Line Items]    
Revenues 120 117
Service [Member]    
Segment revenues [Line Items]    
Revenues 1,905 1,694
Service [Member] | Transmission And Gulf Of Mexico [Member]    
Segment revenues [Line Items]    
Revenues 1,029 915
Service [Member] | Northeast G And P [Member]    
Segment revenues [Line Items]    
Revenues 475 443
Service [Member] | West [Member]    
Segment revenues [Line Items]    
Revenues 397 332
Service [Member] | Gas & NGL Marketing Services    
Segment revenues [Line Items]    
Revenues [1] 0 1
Service [Member] | Other [Member]    
Segment revenues [Line Items]    
Revenues 4 3
Service [Member] | Intersegment Eliminations [Member]    
Segment revenues [Line Items]    
Revenues (64) (60)
Service [Member] | Intersegment Eliminations [Member] | Transmission And Gulf Of Mexico [Member]    
Segment revenues [Line Items]    
Revenues (20) (25)
Service [Member] | Intersegment Eliminations [Member] | Northeast G And P [Member]    
Segment revenues [Line Items]    
Revenues (4) (11)
Service [Member] | Intersegment Eliminations [Member] | West [Member]    
Segment revenues [Line Items]    
Revenues (40) (24)
Service [Member] | Intersegment Eliminations [Member] | Gas & NGL Marketing Services    
Segment revenues [Line Items]    
Revenues [1] 0 0
Service [Member] | Intersegment Eliminations [Member] | Other [Member]    
Segment revenues [Line Items]    
Revenues 0 0
Service [Member] | Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]    
Segment revenues [Line Items]    
Revenues 1,049 940
Service [Member] | Operating Segments [Member] | Northeast G And P [Member]    
Segment revenues [Line Items]    
Revenues 479 454
Service [Member] | Operating Segments [Member] | West [Member]    
Segment revenues [Line Items]    
Revenues 437 356
Service [Member] | Operating Segments [Member] | Gas & NGL Marketing Services    
Segment revenues [Line Items]    
Revenues [1] 0 1
Service [Member] | Operating Segments [Member] | Other [Member]    
Segment revenues [Line Items]    
Revenues 4 3
NonRegulated Service Commodity Consideration [Member]    
Segment revenues [Line Items]    
Revenues 30 36
NonRegulated Service Commodity Consideration [Member] | Intersegment Eliminations [Member]    
Segment revenues [Line Items]    
Revenues 0 0
NonRegulated Service Commodity Consideration [Member] | Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]    
Segment revenues [Line Items]    
Revenues 9 12
NonRegulated Service Commodity Consideration [Member] | Operating Segments [Member] | Northeast G And P [Member]    
Segment revenues [Line Items]    
Revenues 5 6
NonRegulated Service Commodity Consideration [Member] | Operating Segments [Member] | West [Member]    
Segment revenues [Line Items]    
Revenues 16 18
NonRegulated Service Commodity Consideration [Member] | Operating Segments [Member] | Gas & NGL Marketing Services    
Segment revenues [Line Items]    
Revenues [1] 0 0
NonRegulated Service Commodity Consideration [Member] | Operating Segments [Member] | Other [Member]    
Segment revenues [Line Items]    
Revenues 0 0
Product [Member]    
Segment revenues [Line Items]    
Revenues 845 845
Product [Member] | Transmission And Gulf Of Mexico [Member]    
Segment revenues [Line Items]    
Revenues 30 24
Product [Member] | Northeast G And P [Member]    
Segment revenues [Line Items]    
Revenues 2 8
Product [Member] | West [Member]    
Segment revenues [Line Items]    
Revenues 72 19
Product [Member] | Gas & NGL Marketing Services    
Segment revenues [Line Items]    
Revenues [1] 707 776
Product [Member] | Other [Member]    
Segment revenues [Line Items]    
Revenues 34 18
Product [Member] | Intersegment Eliminations [Member]    
Segment revenues [Line Items]    
Revenues (184) (126)
Product [Member] | Intersegment Eliminations [Member] | Transmission And Gulf Of Mexico [Member]    
Segment revenues [Line Items]    
Revenues (31) (31)
Product [Member] | Intersegment Eliminations [Member] | Northeast G And P [Member]    
Segment revenues [Line Items]    
Revenues (23) (41)
Product [Member] | Intersegment Eliminations [Member] | West [Member]    
Segment revenues [Line Items]    
Revenues (176) (71)
Product [Member] | Intersegment Eliminations [Member] | Gas & NGL Marketing Services    
Segment revenues [Line Items]    
Revenues [1] 120 101
Product [Member] | Intersegment Eliminations [Member] | Other [Member]    
Segment revenues [Line Items]    
Revenues (74) (84)
Product [Member] | Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]    
Segment revenues [Line Items]    
Revenues 61 55
Product [Member] | Operating Segments [Member] | Northeast G And P [Member]    
Segment revenues [Line Items]    
Revenues 25 49
Product [Member] | Operating Segments [Member] | West [Member]    
Segment revenues [Line Items]    
Revenues 248 90
Product [Member] | Operating Segments [Member] | Gas & NGL Marketing Services    
Segment revenues [Line Items]    
Revenues [1] 587 675
Product [Member] | Operating Segments [Member] | Other [Member]    
Segment revenues [Line Items]    
Revenues 108 102
Energy Commodities and Service    
Segment revenues [Line Items]    
Revenues [2] (9) 506
Energy Commodities and Service | Realized Gain (Loss)    
Segment revenues [Line Items]    
Revenues 86 174
Energy Commodities and Service | Unrealized Gain (Loss)    
Segment revenues [Line Items]    
Revenues (95) 332
Energy Commodities and Service | Intersegment Eliminations [Member]    
Segment revenues [Line Items]    
Revenues [2] 0 0
Energy Commodities and Service | Intersegment Eliminations [Member] | Realized Gain (Loss)    
Segment revenues [Line Items]    
Revenues 0 0
Energy Commodities and Service | Intersegment Eliminations [Member] | Unrealized Gain (Loss)    
Segment revenues [Line Items]    
Revenues 0 0
Energy Commodities and Service | Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]    
Segment revenues [Line Items]    
Revenues [2] 0 0
Energy Commodities and Service | Operating Segments [Member] | Transmission And Gulf Of Mexico [Member] | Realized Gain (Loss)    
Segment revenues [Line Items]    
Revenues 0 0
Energy Commodities and Service | Operating Segments [Member] | Transmission And Gulf Of Mexico [Member] | Unrealized Gain (Loss)    
Segment revenues [Line Items]    
Revenues 0 0
Energy Commodities and Service | Operating Segments [Member] | Northeast G And P [Member]    
Segment revenues [Line Items]    
Revenues [2] 0 0
Energy Commodities and Service | Operating Segments [Member] | Northeast G And P [Member] | Realized Gain (Loss)    
Segment revenues [Line Items]    
Revenues 0 0
Energy Commodities and Service | Operating Segments [Member] | Northeast G And P [Member] | Unrealized Gain (Loss)    
Segment revenues [Line Items]    
Revenues 0 0
Energy Commodities and Service | Operating Segments [Member] | West [Member]    
Segment revenues [Line Items]    
Revenues [2] 0 39
Energy Commodities and Service | Operating Segments [Member] | West [Member] | Realized Gain (Loss)    
Segment revenues [Line Items]    
Revenues 0 39
Energy Commodities and Service | Operating Segments [Member] | West [Member] | Unrealized Gain (Loss)    
Segment revenues [Line Items]    
Revenues 0 0
Energy Commodities and Service | Operating Segments [Member] | Gas & NGL Marketing Services    
Segment revenues [Line Items]    
Revenues [1],[2] (17) 455
Energy Commodities and Service | Operating Segments [Member] | Gas & NGL Marketing Services | Realized Gain (Loss)    
Segment revenues [Line Items]    
Revenues [1] 81 117
Energy Commodities and Service | Operating Segments [Member] | Gas & NGL Marketing Services | Unrealized Gain (Loss)    
Segment revenues [Line Items]    
Revenues [1] (98) 338
Energy Commodities and Service | Operating Segments [Member] | Other [Member]    
Segment revenues [Line Items]    
Revenues [2] 8 12
Energy Commodities and Service | Operating Segments [Member] | Other [Member] | Realized Gain (Loss)    
Segment revenues [Line Items]    
Revenues 5 18
Energy Commodities and Service | Operating Segments [Member] | Other [Member] | Unrealized Gain (Loss)    
Segment revenues [Line Items]    
Revenues $ 3 $ (6)
[1] As we are acting as agent for natural gas marketing customers or engage in energy trading activities, the resulting revenues are presented net of the related costs of those activities.
[2] We record transactions that qualify as commodity 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 from commodity derivatives held for energy trading purposes are presented on a net basis in revenue.