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Related-Party Transactions (Tables) | 9 Months Ended
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Sep. 30, 2021
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 | 2021 |  | 2020 |  | 2021 |  | 2020 |
|  | Millions |
| Billings from Affiliates: |  |  |  |  |  |  |  |
| Net Billings from PSEG Power (A) | $ | 121 |  |  | $ | 148 |  |  | $ | 788 |  |  | $ | 865 |  |
| Administrative Billings from Services (B) | 102 |  |  | 82 |  |  | 281 |  |  | 238 |  |
| Total Billings from Affiliates | $ | 223 |  |  | $ | 230 |  |  | $ | 1,069 |  |  | $ | 1,103 |  |
Schedule Of Related Party Transactions, Payables |
|  | As of |  | As of |
| Related-Party Transactions | September 30, 2021 |  | December 31, 2020 |
|  | Millions |
| Receivable from PSEG Power (A) | $ | 1 |  |  | $ | — |  |
| Receivable from Other | 1 |  |  | — |  |
| Accounts Receivable—Affiliated Companies | $ | 2 |  |  | $ | — |  |
| Payable to PSEG Power (A) | $ | — |  |  | $ | 273 |  |
| Payable to Services (B) | 86 |  |  | 95 |  |
| Payable to PSEG (C) | 43 |  |  | 111 |  |
| Accounts Payable—Affiliated Companies | $ | 129 |  |  | $ | 479 |  |
| Working Capital Advances to Services (D) | $ | 33 |  |  | $ | 33 |  |
| Long-Term Accrued Taxes Payable | $ | 24 |  |  | $ | 7 |  |
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 | 2021 |  | 2020 |  | 2021 |  | 2020 |
|  | Millions |
| Billings to Affiliates: |  |  |  |  |  |  |  |
| Net Billings to PSE&G (A) | $ | 121 |  |  | $ | 148 |  |  | $ | 788 |  |  | $ | 865 |  |
| Billings from Affiliates: |  |  |  |  |  |  |  |
| Administrative Billings from Services (B) | $ | 42 |  |  | $ | 40 |  |  | $ | 131 |  |  | $ | 127 |  |
Schedule Of Related Party Transactions, Receivables |
|  | As of |  | As of |
| Related-Party Transactions | September 30, 2021 |  | December 31, 2020 |
|  | Millions |
| Receivable from PSE&G (A) | $ | — |  |  | $ | 273 |  |
| Receivable from PSEG (C) | — |  |  | 44 |  |
| Receivable from Other | 3 |  |  | — |  |
| Accounts Receivable—Affiliated Companies | $ | 3 |  |  | $ | 317 |  |
| Payable to Services (B) | $ | 23 |  |  | $ | 13 |  |
| Payable to PSEG (C) | 39 |  |  | — |  |
| Payable to PSE&G (A) | 1 |  |  | — |  |
| Accounts Payable—Affiliated Companies | $ | 63 |  |  | $ | 13 |  |
| Short-Term Loan to (from) Affiliate (E) | $ | (862) |  |  | $ | 161 |  |
| Working Capital Advances to Services (D) | $ | 17 |  |  | $ | 17 |  |
| Long-Term Accrued Taxes Payable | $ | 63 |  |  | $ | 57 |  |

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