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Related-Party Transactions (Tables) | 9 Months Ended
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Sep. 30, 2019
Public Service Electric and Gas Company [Member] |
Related Party Transaction [Line Items] |
Schedule Of Related Party Transactions, Revenue | PSE&G The financial statements for PSE&G include transactions with related parties presented as follows:
|  | Three Months Ended |  | Nine Months Ended |
|  | September 30, |  | September 30, |
| Related-Party Transactions | 2019 |  | 2018 |  | 2019 |  | 2018 |
|  | Millions |
| Billings from Affiliates: |  |  |  |  |  |  |  |
| Net Billings from PSEG Power (A) | $ | 220 |  |  | $ | 229 |  |  | $ | 1,099 |  |  | $ | 1,079 |  |
| Administrative Billings from Services (B) | 72 |  |  | 78 |  |  | 227 |  |  | 246 |  |
| Total Billings from Affiliates | $ | 292 |  |  | $ | 307 |  |  | $ | 1,326 |  |  | $ | 1,325 |  |
Schedule Of Related Party Transactions, Payables |
|  | As of |  | As of |
| Related-Party Transactions | September 30, 2019 |  | December 31, 2018 |
|  | Millions |
| Receivable from PSEG (C) | $ | 12 |  |  | $ | 123 |  |
| Payable to PSEG Power (A) | $ | 152 |  |  | $ | 245 |  |
| Payable to Services (B) | 56 |  |  | 76 |  |
| Accounts Payable—Affiliated Companies | $ | 208 |  |  | $ | 321 |  |
| Working Capital Advances to Services (D) | $ | 33 |  |  | $ | 33 |  |
| Long-Term Accrued Taxes Payable | $ | 103 |  |  | $ | 69 |  |
PSEG Power [Member] |
Related Party Transaction [Line Items] |
Schedule Of Related Party Transactions, Revenue | The financial statements for PSEG Power include transactions with related parties presented as follows:
|  | Three Months Ended |  | Nine Months Ended |
|  | September 30, |  | September 30, |
| Related-Party Transactions | 2019 |  | 2018 |  | 2019 |  | 2018 |
|  | Millions |
| Billings to Affiliates: |  |  |  |  |  |  |  |
| Net Billings to PSE&G (A) | $ | 220 |  |  | $ | 229 |  |  | $ | 1,099 |  |  | $ | 1,079 |  |
| Billings from Affiliates: |  |  |  |  |  |  |  |
| Administrative Billings from Services (B) | $ | 41 |  |  | $ | 38 |  |  | $ | 132 |  |  | $ | 113 |  |
Schedule Of Related Party Transactions, Receivables |
|  | As of |  | As of |
| Related-Party Transactions | September 30, 2019 |  | December 31, 2018 |
|  | Millions |
| Receivable from PSE&G (A) | $ | 152 |  |  | $ | 245 |  |
| Receivable from PSEG (C) | 81 |  |  | 29 |  |
| Accounts Receivable—Affiliated Companies | $ | 233 |  |  | $ | 274 |  |
| Payable to Services (B) | $ | 20 |  |  | $ | 16 |  |
| Accounts Payable—Affiliated Companies | $ | 20 |  |  | $ | 16 |  |
| Short-Term Loan to (from) Affiliate (E) | $ | 86 |  |  | $ | (193 | ) |
| Working Capital Advances to Services (D) | $ | 17 |  |  | $ | 17 |  |
| Long-Term Accrued Taxes Payable | $ | 101 |  |  | $ | 76 |  |

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