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Goodwill And Other Intangibles (Tables) | 12 Months Ended
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Dec. 31, 2019
PSEG Power LLC |
Goodwill [Line Items] |
Schedule of Intangibles | The changes to PSEG Power’s intangible assets during 2018 and 2019 are as follows:
|  |  | Emissions Allowances |  | RECs |  | Total Other Intangibles |
|  |  | Millions |
| Balance as of January 1, 2018 |  | $ | 74 |  |  | $ | 40 |  |  | $ | 114 |  |
| Retirements |  | (26 | ) |  | (90 | ) |  | (116 | ) |
| Purchases |  | 36 |  |  | 110 |  |  | 146 |  |
| Sales and Transfers, net |  | — |  |  | (1 | ) |  | (1 | ) |
| Balance as of December 31, 2018 |  | $ | 84 |  |  | $ | 59 |  |  | $ | 143 |  |
| Retirements |  | (6 | ) |  | (83 | ) |  | (89 | ) |
| Purchases |  | 26 |  |  | 72 |  |  | 98 |  |
| Sales and Transfers, net |  | — |  |  | (3 | ) |  | (3 | ) |
| Balance as of December 31, 2019 |  | $ | 104 |  |  | $ | 45 |  |  | $ | 149 |  |

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