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Revenues Revenues (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 USD ($) $ / mwd MW | Mar. 31, 2018 USD ($) | Dec. 31, 2018
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | $ 2,786 | $ 2,644 |
Revenues Unrelated to Contracts with Customers | [1] | 194 | 174 |
Total Operating Revenues |  | 2,980 | 2,818 |
Electric Distribution Contracts [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 742 | 690 |
Gas Distribution [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 928 | 756 |
Electric Transmission [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 288 | 312 |
Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 515 | 498 |
Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Electricity and Related Products [Member] | NY ISO [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 41 | 59 |
Electricity and Related Products [Member] | ISO New England [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 21 | 47 |
Gas Sales [Member] | Third Party Sales [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 47 | 64 |
Gas Sales [Member] | Sales to Affiliates [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Other Revenues from Contracts with Customers [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers | [2] | $ 204 | 218 |
PSE And G [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Allowances percentage of accounts receivable |  | 6.00% |  | 7.00%
Revenue from Contract with Customers |  | $ 2,025 | 1,833 |
Revenues Unrelated to Contracts with Customers | [1] | 7 | 12 |
Total Operating Revenues |  | 2,032 | 1,845 |
PSE And G [Member] | Electric Distribution Contracts [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 742 | 690 |
PSE And G [Member] | Gas Distribution [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 931 | 759 |
PSE And G [Member] | Electric Transmission [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 288 | 312 |
PSE And G [Member] | Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
PSE And G [Member] | Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
PSE And G [Member] | Electricity and Related Products [Member] | NY ISO [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
PSE And G [Member] | Electricity and Related Products [Member] | ISO New England [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
PSE And G [Member] | Gas Sales [Member] | Third Party Sales [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
PSE And G [Member] | Gas Sales [Member] | Sales to Affiliates [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
PSE And G [Member] | Other Revenues from Contracts with Customers [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers | [2] | 64 | 72 |
Power [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 1,239 | 1,251 |
Revenues Unrelated to Contracts with Customers | [1] | 177 | 152 |
Total Operating Revenues |  | 1,416 | 1,403 |
Anticipated Contract Revenues |  | $ 177 |  |
Power [Member] | PJM [Member] | June 2018 to May 2019 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 205 |  |
Load (MW) | MW |  | 9,200 |  |
Power [Member] | PJM [Member] | June 2019 to May 2020 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 115 |  |
Load (MW) | MW |  | 9,000 |  |
Power [Member] | PJM [Member] | June 2020 to May 2021 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 170 |  |
Load (MW) | MW |  | 8,100 |  |
Power [Member] | PJM [Member] | June 2021 to May 2022 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 178 |  |
Load (MW) | MW |  | 7,700 |  |
Power [Member] | ISO New England [Member] | June 2018 to May 2019 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 314 |  |
Load (MW) | MW |  | 820 |  |
Power [Member] | ISO New England [Member] | June 2019 to May 2020 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 231 |  |
Load (MW) | MW |  | 1,330 |  |
Power [Member] | ISO New England [Member] | June 2020 to May 2021 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 195 |  |
Load (MW) | MW |  | 1,330 |  |
Power [Member] | ISO New England [Member] | June 2021 to May 2022 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 192 |  |
Load (MW) | MW |  | 950 |  |
Power [Member] | ISO New England [Member] | June 2022 to May 2023 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 179 |  |
Load (MW) | MW |  | 950 |  |
Power [Member] | ISO New England [Member] | June 2023 to May 2024 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 231 |  |
Load (MW) | MW |  | 480 |  |
Power [Member] | ISO New England [Member] | June 2024 to May 2025 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 231 |  |
Load (MW) | MW |  | 480 |  |
Power [Member] | ISO New England [Member] | June 2025 to May 2026 [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Dollars Per Megawatt-Day | $ / mwd |  | 231 |  |
Load (MW) | MW |  | 480 |  |
Power [Member] | Electric Distribution Contracts [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | $ 0 | 0 |
Power [Member] | Gas Distribution [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Power [Member] | Electric Transmission [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Power [Member] | Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 515 | 498 |
Power [Member] | Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 126 | 176 |
Power [Member] | Electricity and Related Products [Member] | NY ISO [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 41 | 59 |
Power [Member] | Electricity and Related Products [Member] | ISO New England [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 21 | 47 |
Power [Member] | Gas Sales [Member] | Third Party Sales [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 47 | 64 |
Power [Member] | Gas Sales [Member] | Sales to Affiliates [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 479 | 397 |
Power [Member] | Other Revenues from Contracts with Customers [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers | [2] | 10 | 10 |
Other [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 131 | 137 |
Revenues Unrelated to Contracts with Customers | [1] | 10 | 10 |
Total Operating Revenues |  | 141 | 147 |
Other [Member] | LIPA OSA contract fixed component [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Anticipated Contract Revenues |  | 65 |  |
Other [Member] | Electric Distribution Contracts [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Other [Member] | Gas Distribution [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Other [Member] | Electric Transmission [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Other [Member] | Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Other [Member] | Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Other [Member] | Electricity and Related Products [Member] | NY ISO [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Other [Member] | Electricity and Related Products [Member] | ISO New England [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Other [Member] | Gas Sales [Member] | Third Party Sales [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Other [Member] | Gas Sales [Member] | Sales to Affiliates [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Other [Member] | Other Revenues from Contracts with Customers [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers | [2] | 131 | 137 |
Other [Member] | LIPA OSA contract incentive component [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Anticipated Contract Revenues |  | 10 |  |
Eliminations [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | (609) | (577) |
Revenues Unrelated to Contracts with Customers | [1] | 0 | 0 |
Total Operating Revenues |  | (609) | (577) |
Eliminations [Member] | Electric Distribution Contracts [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Eliminations [Member] | Gas Distribution [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | (3) | (3) |
Eliminations [Member] | Electric Transmission [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Eliminations [Member] | Electricity and Related Products [Member] | PJM [Member] | Third Party Sales [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Eliminations [Member] | Electricity and Related Products [Member] | PJM [Member] | Sales to Affiliates [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | (126) | (176) |
Eliminations [Member] | Electricity and Related Products [Member] | NY ISO [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Eliminations [Member] | Electricity and Related Products [Member] | ISO New England [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Eliminations [Member] | Gas Sales [Member] | Third Party Sales [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | 0 | 0 |
Eliminations [Member] | Gas Sales [Member] | Sales to Affiliates [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers |  | (479) | (397) |
Eliminations [Member] | Other Revenues from Contracts with Customers [Member] |  |  |  |
Revenues [Line Items] |  |  |  |
Revenue from Contract with Customers | [2] | $ (1) | $ (1) |
[1] | Includes primarily alternative revenues at PSE&G, derivative contracts at Power, and lease contracts in Other.
[2] | Includes primarily revenues from appliance repair services at PSE&G, solar power projects and energy management and fuel service contracts with LIPA at Power, and PSEG LI’s OSA with LIPA in Other.

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