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Business Segments - Segment Assets (Detail) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Segment Reporting, Asset Reconciling Item [Line Items]    
Segment long-term assets $ 11,490 $ 11,632
Current assets 1,002 1,702
Total assets 12,492 13,334
Operating Segments | Logistics and Marketing    
Segment Reporting, Asset Reconciling Item [Line Items]    
Segment long-term assets 3,754 3,814
Operating Segments | Gathering and Processing    
Segment Reporting, Asset Reconciling Item [Line Items]    
Segment long-term assets 7,573 7,594
Other    
Segment Reporting, Asset Reconciling Item [Line Items]    
Segment long-term assets $ 163 $ 224