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Schedule Of Consolidated Debt (Short-Term Liquidity) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Short-term Debt [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 4,200 |
Line of Credit Facility, Amount Outstanding |  | 722 |
Available Liquidity |  | 3,478 |
Commercial Paper and Loans |  | $ 542 | $ 388
Commitments of single institution as percentage of total commitments |  | 8.00% |
PSEG [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 1,500 |
Line of Credit Facility, Amount Outstanding |  | 556 |
Available Liquidity |  | 944 |
PSE&G [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | 600 |
Line of Credit Facility, Amount Outstanding |  | 15 |
Available Liquidity |  | 585 |
Power [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | 2,100 |
Line of Credit Facility, Amount Outstanding |  | 151 |
Available Liquidity |  | 1,949 |
Five Year Credit Facility Maturing on April 2020 [Member] | PSEG [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Commercial Paper and Loans |  | $ 542 |
Short-term Debt, Weighted Average Interest Rate, at Point in Time |  | 1.89% |
Revolving Credit Facility [Member] | PSEG [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | [1] | $ 1,500 |
Line of Credit Facility, Amount Outstanding | [1] | 556 |
Available Liquidity | [1] | $ 944 |
Expiration Date |  | Mar 2022 |
Revolving Credit Facility [Member] | PSE&G [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | [1] | $ 600 |
Line of Credit Facility, Amount Outstanding | [1] | 15 |
Available Liquidity | [1] | $ 585 |
Expiration Date |  | Mar 2022 |
Revolving Credit Facility [Member] | Power [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 1,900 |
Line of Credit Facility, Amount Outstanding |  | 39 |
Available Liquidity |  | $ 1,861 |
Expiration Date |  | Mar 2022 |
Letter of Credit [Member] | Power [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 200 |
Line of Credit Facility, Amount Outstanding |  | 112 |
Available Liquidity |  | $ 88 |
Expiration Date |  | Mar 2020 |
[1] | The primary use of PSEG’s and PSE&G’s credit facilities is to support their respective Commercial Paper Programs under which as of December 31, 2017, PSEG had $542 million outstanding at a weighted average interest rate of 1.89%. PSE&G had no amounts outstanding under its Commercial Paper Program as of December 31, 2017.

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