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Related-Party Transactions (Tables) | 3 Months Ended
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Mar. 31, 2018
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 presented as follows:
|  |  | Three Months Ended |
|  |  | March 31, |
| Related-Party Transactions |  | 2018 |  | 2017 |
|  | Millions |
| Billings from Affiliates: |  |  |  |  |
| Net Billings from Power primarily through BGS and BGSS (A) |  | $ | 578 |  |  | $ | 599 |  |
| Administrative Billings from Services (B) |  | 83 |  |  | 65 |  |
| Total Billings from Affiliates |  | $ | 661 |  |  | $ | 664 |  |
Schedule Of Related Party Transactions, Payables |
|  | As of |  | As of |
| Related-Party Transactions | March 31, 2018 |  | December 31, 2017 |
|  | Millions |
| Payable to Power (A) | $ | 215 |  |  | $ | 221 |  |
| Payable to Services (B) | 65 |  |  | 78 |  |
| Payable to PSEG (C) | 105 |  |  | 41 |  |
| Accounts Payable—Affiliated Companies | $ | 385 |  |  | $ | 340 |  |
| Working Capital Advances to Services (D) | $ | 33 |  |  | $ | 33 |  |
| Long-Term Accrued Taxes Payable | $ | 93 |  |  | $ | 91 |  |
Power [Member] |
Related Party Transaction [Line Items] |
Schedule Of Related Party Transactions, Revenue | The financial statements for Power include transactions with related parties presented as follows:
|  |  | Three Months Ended |
|  |  | March 31, |
| Related-Party Transactions |  | 2018 |  | 2017 |
|  | Millions |
| Billings to Affiliates: |  |  |  |  |
| Net Billings to PSE&G primarily through BGS and BGSS (A) |  | $ | 578 |  |  | $ | 599 |  |
| Billings from Affiliates: |  |  |  |  |
| Administrative Billings from Services (B) |  | $ | 43 |  |  | $ | 36 |  |
Schedule Of Related Party Transactions, Receivables |
|  | As of |  | As of |
| Related-Party Transactions | March 31, 2018 |  | December 31, 2017 |
|  | Millions |
| Receivables from PSE&G (A) | $ | 215 |  |  | $ | 221 |  |
| Accounts Receivable—Affiliated Companies | $ | 215 |  |  | $ | 221 |  |
| Payable to Services (B) | $ | 23 |  |  | $ | 28 |  |
| Payable to PSEG (C) | 46 |  |  | 29 |  |
| Accounts Payable—Affiliated Companies | $ | 69 |  |  | $ | 57 |  |
| Short-Term Loan from Affiliate (E) | $ | 35 |  |  | $ | 281 |  |
| Working Capital Advances to Services (D) | $ | 17 |  |  | $ | 17 |  |
| Long-Term Accrued Taxes Payable | $ | 46 |  |  | $ | 52 |  |

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