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Supplemental Disclosure of Cash Flow Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]        
Interest, net of capitalized interest $ 480 $ 489 $ 471  
Income tax payments (refunds), net 421 (46) 143  
Accounts payable related to capital expenditures 335 370 153  
ROU assets obtained in exchange for lease liabilities 7 2 15  
Recognition of beneficial conversion feature 0 0 32  
Amortization of beneficial conversion feature 0 0 (32)  
Restricted cash included in Prepaid expenses and other current assets $ 74 $ 230    
Restricted Cash and Cash Equivalents, Statement of Financial Position [Extensible Enumeration] Prepaid Expense and Other Assets, Current Prepaid Expense and Other Assets, Current    
Restricted cash included in Prepaid expenses and other current assets $ 17 $ 24    
Total cash, cash equivalents and restricted cash shown in Statements of Consolidated Cash Flows 91 254 167 $ 271
Energy Transfer Common Units        
Condensed Financial Statements, Captions [Line Items]        
Fair value of units received 0 1,672 0  
Energy Transfer Series G Preferred Units        
Condensed Financial Statements, Captions [Line Items]        
Fair value of units received 0 385 0  
Houston Electric        
Condensed Financial Statements, Captions [Line Items]        
Interest, net of capitalized interest 223 208 201  
Income tax payments (refunds), net 142 20 65  
Accounts payable related to capital expenditures 168 261 102  
Fair value of units received 38 0 0  
ROU assets obtained in exchange for lease liabilities 6 0 1  
Recognition of beneficial conversion feature 0 0 0  
Amortization of beneficial conversion feature 0 0 0  
Restricted cash included in Prepaid expenses and other current assets 75 214    
Restricted cash included in Prepaid expenses and other current assets 13 19    
Total cash, cash equivalents and restricted cash shown in Statements of Consolidated Cash Flows 88 233 154 235
Houston Electric | Energy Transfer Common Units        
Condensed Financial Statements, Captions [Line Items]        
Fair value of units received 0 0 0  
Houston Electric | Energy Transfer Series G Preferred Units        
Condensed Financial Statements, Captions [Line Items]        
Fair value of units received 0 0 0  
CERC Corp        
Condensed Financial Statements, Captions [Line Items]        
Interest, net of capitalized interest 104 130 143  
Income tax payments (refunds), net 37 (7) (5)  
Accounts payable related to capital expenditures 139 128 66  
Fair value of units received 54 0 0  
ROU assets obtained in exchange for lease liabilities 0 0 5  
Recognition of beneficial conversion feature 0 0 0  
Amortization of beneficial conversion feature 0 0 0  
Restricted cash included in Prepaid expenses and other current assets 0 15    
Restricted cash included in Prepaid expenses and other current assets 0 0    
Total cash, cash equivalents and restricted cash shown in Statements of Consolidated Cash Flows 0 15 6 $ 9
CERC Corp | Energy Transfer Common Units        
Condensed Financial Statements, Captions [Line Items]        
Fair value of units received 0 0 0  
CERC Corp | Energy Transfer Series G Preferred Units        
Condensed Financial Statements, Captions [Line Items]        
Fair value of units received 0 0 $ 0  
Bond Companies | Houston Electric        
Condensed Financial Statements, Captions [Line Items]        
Restricted cash included in Prepaid expenses and other current assets $ 75 $ 92