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Business Segments (Schedule of Revenue, By Products and Services) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]      
Operating Revenues $ 32,237 $ 30,357 $ 29,060
Total Reportable Segments      
Segment Reporting Information [Line Items]      
Operating Revenues 32,209 30,319 29,023
Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 29,297 28,020 26,846
Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 2,912 2,299 2,177
Operating Segments | Total Reportable Segments      
Segment Reporting Information [Line Items]      
Operating Revenues 32,360 30,483 29,187
Operating Segments | Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 29,357 28,093 26,921
Operating Segments | Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 3,003 2,390 2,266
Operating Segments | Retail Electric      
Segment Reporting Information [Line Items]      
Operating Revenues 25,504 24,593 23,484
Operating Segments | Retail Electric | Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 25,504 24,593 23,484
Operating Segments | Retail Electric | Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 0 0 0
Operating Segments | Wholesale Electric      
Segment Reporting Information [Line Items]      
Operating Revenues 2,423 2,219 2,193
Operating Segments | Wholesale Electric | Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 2,423 2,219 2,193
Operating Segments | Wholesale Electric | Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 0 0 0
Operating Segments | Retail Natural Gas      
Segment Reporting Information [Line Items]      
Operating Revenues 2,782 2,320 2,199
Operating Segments | Retail Natural Gas | Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 0   0
Operating Segments | Retail Natural Gas | Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 2,782 2,320 2,199
Operating Segments | Other      
Segment Reporting Information [Line Items]      
Operating Revenues 1,651 1,351 1,311
Operating Segments | Other | Electric Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues 1,430 1,281 1,244
Operating Segments | Other | Gas Utilities and Infrastructure      
Segment Reporting Information [Line Items]      
Operating Revenues $ 221 $ 70 $ 67