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v3.20.2

Revenue (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) company MW | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) company MW | Jun. 30, 2019 USD ($)
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | $ 2,493 |  | $ 2,448 |  | $ 5,122 | $ 5,254
Total revenues | 2,522 | [1] | 2,516 | [1] | 5,231 | 5,399
Other Non-Customer Revenue |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Late payment charges | 6 |  | 9 |  | 16 | 20
Distribution services |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 1,219 |  | 1,139 |  | 2,454 | 2,404
Retail generation |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 811 |  | 792 |  | 1,700 | 1,836
Wholesale sales |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 52 |  | 113 |  | 124 | 223
Transmission |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 380 |  | 367 |  | 777 | 719
Other |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 31 |  | 37 |  | 67 | 72
Derivative Revenue | Other Non-Customer Revenue |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | 6 |  | 3 |  | 6 | 5
ARP |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
ARP |  |  | 55 |  | 83 | 117
Total revenues | 15 |  |  |  |  |
Other non-customer revenue |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Other non-customer revenue |  |  | 13 |  | 26 | 28
Total revenues | 14 |  |  |  |  |
Regulated Distribution |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | $ 2,067 |  | 1,966 |  | $ 4,227 | 4,310
Reduction in revenue |  |  |  |  |  | 27
Number of existing utility operating companies | company | 10 |  |  |  | 10 |
Megawatts of net demonstrated capacity of competitive segment | MW | 3,790 |  |  |  | 3,790 |
Utility customer payment period |  |  |  |  | 30 days |
Regulated Distribution | Residential |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | $ 1,280 |  | 1,123 |  | $ 2,599 | 2,607
Regulated Distribution | Commercial |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | 507 |  | 572 |  | 1,051 | 1,159
Regulated Distribution | Industrial |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | 259 |  | 251 |  | 536 | 500
Regulated Distribution | Other |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | 21 |  | 20 |  | 41 | 44
Regulated Transmission |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | 380 |  | 367 |  | 777 | 719
Reduction in revenue |  |  |  |  |  | 7
Regulated Transmission | Other |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | 72 |  | 74 |  | 145 | 145
Regulated Transmission | ATSI |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | 192 |  | 184 |  | 396 | 358
Regulated Transmission | TrAIL |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | 58 |  | 59 |  | 121 | 117
Regulated Transmission | MAIT |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues | 58 |  | 50 |  | 115 | 99
Operating Segments |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Reduction in revenue | 22 |  | 2 |  | 45 | 34
Operating Segments | Regulated Distribution |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 2,148 |  | 2,113 |  | 4,415 | 4,597
Total revenues | 2,188 |  | 2,192 |  | 4,546 | 4,765
Operating Segments | Regulated Distribution | Distribution services |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 1,241 |  | 1,160 |  | 2,497 | 2,446
Operating Segments | Regulated Distribution | Retail generation |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 826 |  | 806 |  | 1,730 | 1,864
Operating Segments | Regulated Distribution | Wholesale sales |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 50 |  | 110 |  | 121 | 216
Operating Segments | Regulated Distribution | Transmission |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 0 |  | 0 |  | 0 | 0
Operating Segments | Regulated Distribution | Other |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 31 |  | 37 |  | 67 | 71
Operating Segments | Regulated Distribution | ARP |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
ARP | 15 |  | 55 |  |  | 117
Total revenues |  |  |  |  | 83 |
Operating Segments | Regulated Distribution | Other non-customer revenue |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Other non-customer revenue | 25 |  | 24 |  |  | 51
Total revenues |  |  |  |  | 48 |
Operating Segments | Regulated Transmission |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 380 |  | 367 |  | 777 | 719
Total revenues | 384 |  | 372 |  | 785 | 728
Operating Segments | Regulated Transmission | Distribution services |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 0 |  | 0 |  | 0 | 0
Operating Segments | Regulated Transmission | Retail generation |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 0 |  | 0 |  | 0 | 0
Operating Segments | Regulated Transmission | Wholesale sales |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 0 |  | 0 |  | 0 | 0
Operating Segments | Regulated Transmission | Transmission |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 380 |  | 367 |  | 777 | 719
Operating Segments | Regulated Transmission | Other |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 0 |  | 0 |  | 0 | 0
Operating Segments | Regulated Transmission | ARP |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
ARP | 0 |  | 0 |  |  | 0
Total revenues |  |  |  |  | 0 |
Operating Segments | Regulated Transmission | Other non-customer revenue |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Other non-customer revenue | 4 |  | 5 |  |  | 9
Total revenues |  |  |  |  | 8 |
Corporate/Other and Reconciling Adjustments |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | (35) |  | (32) |  | (70) | (62)
Total revenues | (50) |  | (48) |  | (100) | (94)
Corporate/Other and Reconciling Adjustments | Distribution services |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | (22) |  | (21) |  | (43) | (42)
Corporate/Other and Reconciling Adjustments | Retail generation |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | (15) |  | (14) |  | (30) | (28)
Corporate/Other and Reconciling Adjustments | Wholesale sales |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 2 |  | 3 |  | 3 | 7
Corporate/Other and Reconciling Adjustments | Transmission |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 0 |  | 0 |  | 0 | 0
Corporate/Other and Reconciling Adjustments | Other |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Total revenues from contracts with customers | 0 |  | 0 |  | 0 | 1
Corporate/Other and Reconciling Adjustments | ARP |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
ARP | 0 |  | 0 |  |  | 0
Total revenues |  |  |  |  | 0 |
Corporate/Other and Reconciling Adjustments | Other non-customer revenue |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |
Other non-customer revenue | $ (15) |  | $ (16) |  |  | $ (32)
Total revenues |  |  |  |  | $ (30) |
[1] | Includes excise and gross receipts tax collections of $84 million and $81 million during the three months ended June 30, 2020 and 2019, respectively, and $176 million and $183 million during the six months ended June 30, 2020 and 2019, respectively.

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