Business Segments and Related Information - Schedule of Segment Assets Reconciliation to our Consolidated Total Assets (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Segment Reporting [Line Items]
Current assets	$ 15,905	$ 13,360
Operating lease right-of-use assets, net (see Note 16)	758	437
Other assets	944	690
Total assets	81,758	77,902
Operating Segments
Segment Reporting [Line Items]
Total assets	61,998	61,015
Corporate Nonsegment
Segment Reporting [Line Items]
Construction in progress	2,153	2,400
Current assets	15,905	13,360
Operating lease right-of-use assets, net (see Note 16)	758	437
Other assets	944	690
NGL Pipelines & Services | Operating Segments
Segment Reporting [Line Items]
Total assets	25,728	24,999
Crude Oil Pipelines & Services | Operating Segments
Segment Reporting [Line Items]
Total assets	11,131	11,097
Natural Gas Pipelines & Services | Operating Segments
Segment Reporting [Line Items]
Total assets	13,440	13,194
Petrochemical & Refined Products Services | Operating Segments
Segment Reporting [Line Items]
Total assets	$ 11,699	$ 11,725