Segment Disclosures Recon from Segment to Consolidated - Assets and Investments (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 48,433	$ 47,612
Equity-method investments	5,048	5,121
Current assets	3,797	4,549
Other Assets, Noncurrent	1,319	1,276
Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	43,317	41,787
Equity-method investments	5,048	5,121
Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	17,795	17,142
Equity-method investments	629	602
Operating Segments [Member] | Northeast G And P [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	13,539	13,861
Equity-method investments	3,566	3,681
Operating Segments [Member] | West [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	10,710	9,698
Equity-method investments	843	838
Operating Segments [Member] | Gas & NGL Marketing Services
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	130	294
Equity-method investments	0	0
Operating Segments [Member] | Other [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	1,143	792
Equity-method investments	$ 10	$ 0