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Operations And Organization Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Goodwill, Impairment Loss $ 1,325  
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income $ 265  
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Basic Earnings Per Share $ 0.10  
Lease, Right of Use Asset, Net $ 1,033 $ 964
Goodwill 3,835 5,167
Goodwill Test, Fair Value Exceeding the Carrying Value of Goodwill by Less Than 20% $ 1,200  
Document Period End Date Mar. 31, 2020  
COVID-19 [Member]    
Accounts Receivable, Credit Loss Expense (Reversal) $ 16  
Midstream [Member]    
Goodwill, Impairment Loss 483  
Goodwill 0 483
Investment In USAC [Member]    
Goodwill, Impairment Loss 619  
Goodwill 0 619
Interstate Transportation and Storage [Member]    
Goodwill, Impairment Loss 183  
Goodwill 43 226
Other Segments [Member]    
Goodwill, Impairment Loss 40  
Goodwill 137 $ 184
SemGroup [Member]    
Goodwill $ 265