Segment Disclosures Recon from Segment to Consolidated - Assets and Investments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting, Asset Reconciling Item [Line Items]
Equity-method investments	$ 4,107	$ 4,614	$ 5,048
Total assets	54,532	52,627	48,433
Current assets	2,661	4,513	3,797
Other Assets, Noncurrent	1,830	1,573	1,319
Payments to Acquire Productive Assets	5,598	4,313	3,598
Operating Segments [Member] | Transmission And Gulf Of America [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Equity-method investments	272	652	629
Total assets	23,149	19,705	17,795
Payments to Acquire Productive Assets	4,399	2,501	1,420
Operating Segments [Member] | Northeast G And P [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Equity-method investments	3,346	3,477	3,566
Total assets	12,918	13,319	13,539
Payments to Acquire Productive Assets	210	340	261
Operating Segments [Member] | West [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Equity-method investments	476	477	843
Total assets	12,144	12,188	10,710
Payments to Acquire Productive Assets	529	1,186	1,507
Operating Segments [Member] | Gas & NGL Marketing Services
Segment Reporting, Asset Reconciling Item [Line Items]
Equity-method investments	0	0	0
Total assets	46	77	130
Payments to Acquire Productive Assets	2	7	4
Operating Segments [Member] | Reportable Segment, Aggregation before Other Operating Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Equity-method investments	4,094	4,606	5,038
Total assets	48,257	45,289	42,174
Payments to Acquire Productive Assets	5,140	4,034	3,192
Corporate, Non-Segment | Other Operating Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Equity-method investments	13	8	10
Total assets	1,784	1,252	1,143
Payments to Acquire Productive Assets	$ 458	$ 279	$ 406