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Acquisitions and Related Transactions Acquisitions (PreviousTransactions) (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 02, 2021
Feb. 28, 2021
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Business Acquisition [Line Items]          
Preferred Units, Issued     72,184,780 72,184,780 72,184,780
Long-term Debt, Fair Value     $ 54,970 $ 45,420 $ 54,970
Goodwill       $ 33 $ 142
Enable          
Business Acquisition [Line Items]          
Total consideration, net of cash received $ 3,458 $ 10      
Long-term debt, less current maturities(1) [1] 4,267        
Senior Notes 3,180        
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares   0.8595      
Long-term Debt, Fair Value 3,430        
Goodwill 138   $ 138    
Enable | Enable Five-Year Revolving Credit Facility          
Business Acquisition [Line Items]          
Line of Credit Facility, Current Borrowing Capacity 35        
Enable | Enable 2019 Term Loan Agreement          
Business Acquisition [Line Items]          
Line of Credit Facility, Current Borrowing Capacity $ 800        
Enable | Series G Preferred Units [Member]          
Business Acquisition [Line Items]          
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares   0.0265      
Preferred Units, Issued 384,780        
[1] Long-term debt at December 2, 2021 includes Enable senior notes with an aggregate principal amount of $3.18 billion in senior notes and a fair value of $3.43 billion. It also includes $800 million outstanding on the Enable 2019 Term Loan Agreement and $35 million outstanding on the Enable Five-Year Revolving Credit Facility, both of which were repaid and terminated in December 2021, immediately subsequent to the close of the Enable Acquisition.