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Supplementary Financial Information - Schedule of Other Nonoperating Income (Expense) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]      
Insurance settlements $ 24 $ 70 $ 88
Gain on sale of land 95 8 9
Interest income 86 19 0
All other 23 20 28
Total other income 257 117 140
All other 14 4 16
Total other deductions 14 4 16
Operating Segments      
Finite-Lived Intangible Assets [Line Items]      
Gain on sale of land 95 8 9
Gain on TRA settlement 29 0 0
Operating Segments | Asset Closure      
Finite-Lived Intangible Assets [Line Items]      
Insurance settlements 5 1  
Gain on sale of land 94    
Gain on settlement of rail transportation disputes 0 0 15
Operating Segments | West      
Finite-Lived Intangible Assets [Line Items]      
Insurance settlements 19 6  
Operating Segments | Texas      
Finite-Lived Intangible Assets [Line Items]      
Insurance settlements   62 80
Gain on sale of land $ 1    
Operating Segments | Corporate and Other      
Finite-Lived Intangible Assets [Line Items]      
Insurance settlements   $ 1 1
Operating Segments | Sunset      
Finite-Lived Intangible Assets [Line Items]      
Insurance settlements     $ 7