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Related-Party Transactions (Tables) | 9 Months Ended
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Sep. 30, 2017
PSE And G [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 as follows:
|  | Three Months Ended |  | Nine Months Ended |
|  | September 30, |  | September 30, |
| Related-Party Transactions | 2017 |  | 2016 |  | 2017 |  | 2016 |
|  | Millions |
| Billings from Affiliates: |  |  |  |  |  |  |  |
| Net Billings from Power primarily through BGS and BGSS (A) | $ | 259 |  |  | $ | 320 |  |  | $ | 1,154 |  |  | $ | 1,162 |  |
| Administrative Billings from Services (B) | 82 |  |  | 73 |  |  | 226 |  |  | 224 |  |
| Total Billings from Affiliates | $ | 341 |  |  | $ | 393 |  |  | $ | 1,380 |  |  | $ | 1,386 |  |
Schedule Of Related Party Transactions, Payables |
|  | As of |  | As of |
| Related-Party Transactions | September 30, 2017 |  | December 31, 2016 |
|  | Millions |
| Receivables from PSEG (C) | $ | — |  |  | $ | 76 |  |
| Payable to Power (A) | $ | 86 |  |  | $ | 193 |  |
| Payable to Services (B) | 46 |  |  | 67 |  |
| Payable to PSEG (C) | 46 |  |  | — |  |
| Accounts Payable—Affiliated Companies | $ | 178 |  |  | $ | 260 |  |
| Working Capital Advances to Services (D) | $ | 33 |  |  | $ | 33 |  |
| Long-Term Accrued Taxes Payable | $ | 83 |  |  | $ | 130 |  |
Power [Member] |
Related Party Transaction [Line Items] |
Schedule Of Related Party Transactions, Revenue | The financial statements for Power include transactions with related parties as follows:
|  | Three Months Ended |  | Nine Months Ended |
|  | September 30, |  | September 30, |
| Related-Party Transactions | 2017 |  | 2016 |  | 2017 |  | 2016 |
|  | Millions |
| Billings to Affiliates: |  |  |  |  |  |  |  |
| Net Billings to PSE&G primarily through BGS and BGSS (A) | $ | 259 |  |  | $ | 320 |  |  | $ | 1,154 |  |  | $ | 1,162 |  |
| Billings from Affiliates: |  |  |  |  |  |  |  |
| Administrative Billings from Services (B) | $ | 39 |  |  | $ | 44 |  |  | $ | 117 |  |  | $ | 134 |  |
Schedule Of Related Party Transactions, Receivables |
|  | As of |  | As of |
| Related-Party Transactions | September 30, 2017 |  | December 31, 2016 |
|  | Millions |
| Receivables from PSE&G (A) | $ | 86 |  |  | $ | 193 |  |
| Receivables from PSEG (C) | — |  |  | 12 |  |
| Accounts Receivable—Affiliated Companies | $ | 86 |  |  | $ | 205 |  |
| Payable to Services (B) | $ | 17 |  |  | $ | 25 |  |
| Payable to PSEG (C) | 111 |  |  | — |  |
| Accounts Payable—Affiliated Companies | $ | 128 |  |  | $ | 25 |  |
| Short-Term Loan Due (to) from Affiliate (E) | $ | 1 |  |  | $ | 87 |  |
| Working Capital Advances to Services (D) | $ | 17 |  |  | $ | 17 |  |
| Long-Term Accrued Taxes Payable | $ | 57 |  |  | $ | 77 |  |

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