Segment Disclosures Recon from Segment to Consolidated - Assets and Investments (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 52,627	$ 48,433
Equity-method investments	4,614	5,048
Current assets	4,513	3,797
Other Assets, Noncurrent	1,573	1,319
Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	46,541	43,317
Equity-method investments	4,614	5,048
Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	19,705	17,795
Equity-method investments	652	629
Operating Segments [Member] | Northeast G And P [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	13,319	13,539
Equity-method investments	3,477	3,566
Operating Segments [Member] | West [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	12,188	10,710
Equity-method investments	477	843
Operating Segments [Member] | Gas & NGL Marketing Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	77	130
Equity-method investments	0	0
Operating Segments [Member] | Other [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,252	1,143
Equity-method investments	$ 8	$ 10