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v3.25.1

Revenues (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | $ 3,257 | $ 3,032
Wholesale |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 206 | 173
Transmission |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 172 | 158
Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 68 | 78
Total revenue from contracts with customers |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 3,703 | 3,441
Alternative revenue and other |  |
Disaggregation of Revenue [Line Items] |  |
Alternative revenue and other | 203 | 208
Residential | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,557 | 1,437
C&I | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,663 | 1,559
Other | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 37 | 36
Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 3,906 | 3,649
Regulated Electric | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 2,292 | 2,169
Regulated Electric | Wholesale |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 206 | 173
Regulated Electric | Transmission |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 172 | 158
Regulated Electric | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 17 | 19
Regulated Electric | Total revenue from contracts with customers |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 2,687 | 2,519
Regulated Electric | Alternative revenue and other |  |
Disaggregation of Revenue [Line Items] |  |
Alternative revenue and other | 148 | 166
Regulated Electric | Residential | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 924 | 859
Regulated Electric | C&I | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,333 | 1,276
Regulated Electric | Other | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 35 | 34
Regulated Electric | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,835 | 2,685
Regulated Natural Gas | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 952 | 842
Regulated Natural Gas | Wholesale |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Regulated Natural Gas | Transmission |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Regulated Natural Gas | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 51 | 59
Regulated Natural Gas | Total revenue from contracts with customers |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,003 | 901
Regulated Natural Gas | Alternative revenue and other |  |
Disaggregation of Revenue [Line Items] |  |
Alternative revenue and other | 52 | 40
Regulated Natural Gas | Residential | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 632 | 568
Regulated Natural Gas | C&I | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 320 | 274
Regulated Natural Gas | Other | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
Regulated Natural Gas | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1,055 | 941
All Other | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 13 | 21
All Other | Wholesale |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
All Other | Transmission |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
All Other | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 0 | 0
All Other | Total revenue from contracts with customers |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 13 | 21
All Other | Alternative revenue and other |  |
Disaggregation of Revenue [Line Items] |  |
Alternative revenue and other | 3 | 2
All Other | Residential | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1 | 10
All Other | C&I | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 10 | 9
All Other | Other | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 2 | 2
All Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 16 | $ 23

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