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Estimates (Schedule Of Goodwill) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Mar. 31, 2020
Dec. 31, 2022
Dec. 31, 2021
Goodwill [Roll Forward]          
Goodwill       $ 2,533 $ 2,391
Goodwill       33 142
Goodwill $ 2,391     2,566 2,533
Intrastate Transportation and Storage          
Goodwill [Roll Forward]          
Goodwill       0 0
Goodwill       0 0
Goodwill 0     0 0
Goodwill impairment (10)        
Interstate Transportation and Storage          
Goodwill [Roll Forward]          
Goodwill       0 0
Goodwill       0 0
Goodwill 0     0 0
Goodwill impairment   $ (43) $ (183)    
Midstream          
Goodwill [Roll Forward]          
Goodwill       0 0
Goodwill       0 0
Goodwill 0     0 0
Goodwill impairment     (483)    
NGL and Refined Products Transportation and Services          
Goodwill [Roll Forward]          
Goodwill       693 693
Goodwill       0 0
Goodwill 693     693 693
Crude Oil Transportation and Services          
Goodwill [Roll Forward]          
Goodwill       190 52
Goodwill       0 138
Goodwill 52     190 190
Goodwill impairment   (1,280)      
Investment in Sunoco LP          
Goodwill [Roll Forward]          
Goodwill       1,568 1,564
Goodwill       33 4
Goodwill 1,564     1,601 1,568
Investment in USAC          
Goodwill [Roll Forward]          
Goodwill       0 0
Goodwill       0 0
Goodwill 0     0 0
Goodwill impairment     (619)    
All Other          
Goodwill [Roll Forward]          
Goodwill       82 82
Goodwill       0 0
Goodwill 82     $ 82 $ 82
Goodwill impairment $ (15) $ (132) $ (40)