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v3.23.1

Revenues (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | $ 3,501 | $ 3,128
Wholesale |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 224 | 259
Transmission |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 163 | 152
Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 57 | 68
Total revenue from contracts with customers |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 3,945 | 3,607
Alternative revenue and other |  |
Disaggregation of Revenue [Line Items] |  |
Alternative revenue and other | 135 | 144
Residential | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,677 | 1,489
C&I | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,787 | 1,593
Other | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 37 | 46
Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 4,080 | 3,751
Regulated Electric | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 2,263 | 2,084
Regulated Electric | Wholesale |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 224 | 259
Regulated Electric | Transmission |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 163 | 152
Regulated Electric | Other |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 9 | 23
Regulated Electric | Total revenue from contracts with customers |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 2,659 | 2,518
Regulated Electric | Alternative revenue and other |  |
Disaggregation of Revenue [Line Items] |  |
Alternative revenue and other | 104 | 115
Regulated Electric | Residential | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 875 | 817
Regulated Electric | C&I | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,352 | 1,235
Regulated Electric | Other | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 36 | 32
Regulated Electric | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 2,763 | 2,633
Regulated Natural Gas | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,212 | 1,019
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 | 48 | 45
Regulated Natural Gas | Total revenue from contracts with customers |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1,260 | 1,064
Regulated Natural Gas | Alternative revenue and other |  |
Disaggregation of Revenue [Line Items] |  |
Alternative revenue and other | 28 | 26
Regulated Natural Gas | Residential | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 789 | 663
Regulated Natural Gas | C&I | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 423 | 356
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 | 1,288 | 1,090
All Other | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 26 | 25
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 | 26 | 25
All Other | Alternative revenue and other |  |
Disaggregation of Revenue [Line Items] |  |
Alternative revenue and other | 3 | 3
All Other | Residential | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 13 | 9
All Other | C&I | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 12 | 2
All Other | Other | Retail |  |
Disaggregation of Revenue [Line Items] |  |
Revenue from contracts with customers | 1 | 14
All Other | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 29 | $ 28

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