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v3.25.3

Revenues (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | $ 3,274 | $ 3,027 | $ 9,264 | $ 8,528
Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 205 | 191 | 556 | 501
Transmission |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 200 | 187 | 541 | 493
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 55 | 33 | 190 | 170
Total revenue from contracts with customers |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 3,734 | 3,438 | 10,551 | 9,692
Alternative revenue and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Alternative revenue and other | 181 | 206 | 557 | 629
Residential | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 1,395 | 1,279 | 4,045 | 3,708
C&I | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 1,837 | 1,708 | 5,100 | 4,705
Other | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 42 | 40 | 119 | 115
Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 3,915 | 3,644 | 11,108 | 10,321
Regulated Electric | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 3,050 | 2,825 | 7,735 | 7,166
Regulated Electric | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 205 | 191 | 556 | 501
Regulated Electric | Transmission |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 200 | 187 | 541 | 493
Regulated Electric | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 22 | 1 | 61 | 37
Regulated Electric | Total revenue from contracts with customers |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 3,477 | 3,204 | 8,893 | 8,197
Regulated Electric | Alternative revenue and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Alternative revenue and other | 161 | 189 | 458 | 540
Regulated Electric | Residential | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 1,260 | 1,153 | 3,065 | 2,813
Regulated Electric | C&I | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 1,750 | 1,634 | 4,557 | 4,245
Regulated Electric | Other | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 40 | 38 | 113 | 108
Regulated Electric | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 3,638 | 3,393 | 9,351 | 8,737
Regulated Natural Gas | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 215 | 194 | 1,498 | 1,324
Regulated Natural Gas | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 0 | 0 | 0 | 0
Regulated Natural Gas | Transmission |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 0 | 0 | 0 | 0
Regulated Natural Gas | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 33 | 32 | 129 | 133
Regulated Natural Gas | Total revenue from contracts with customers |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 248 | 226 | 1,627 | 1,457
Regulated Natural Gas | Alternative revenue and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Alternative revenue and other | 16 | 13 | 88 | 78
Regulated Natural Gas | Residential | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 133 | 126 | 977 | 885
Regulated Natural Gas | C&I | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 82 | 68 | 521 | 439
Regulated Natural Gas | Other | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 0 | 0 | 0 | 0
Regulated Natural Gas | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | 264 | 239 | 1,715 | 1,535
All Other | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 9 | 8 | 31 | 38
All Other | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 0 | 0 | 0 | 0
All Other | Transmission |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 0 | 0 | 0 | 0
All Other | Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 0 | 0 | 0 | 0
All Other | Total revenue from contracts with customers |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 9 | 8 | 31 | 38
All Other | Alternative revenue and other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Alternative revenue and other | 4 | 4 | 11 | 11
All Other | Residential | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 2 | 0 | 3 | 10
All Other | C&I | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 5 | 6 | 22 | 21
All Other | Other | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 2 | 2 | 6 | 7
All Other | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues | $ 13 | $ 12 | $ 42 | $ 49

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