Business Segments and Related Information - Schedule of Segment Assets Reconciliation to our Consolidated Total Assets (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Current assets	$ 14,160	$ 15,133
Other assets	952	997
Total assets	77,442	77,168
Operating Segments
Segment Reporting Information [Line Items]
Total assets	57,430	56,900
Corporate Nonsegment
Segment Reporting Information [Line Items]
Construction in progress	4,900	4,138
Current assets	14,160	15,133
Other assets	952	997
NGL Pipelines & Services | Operating Segments
Segment Reporting Information [Line Items]
Total assets	22,457	21,900
Crude Oil Pipelines & Services | Operating Segments
Segment Reporting Information [Line Items]
Total assets	11,234	11,390
Natural Gas Pipelines & Services | Operating Segments
Segment Reporting Information [Line Items]
Total assets	12,458	12,260
Petrochemical & Refined Products Services | Operating Segments
Segment Reporting Information [Line Items]
Total assets	$ 11,281	$ 11,350