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Regulatory Assets And Liabilities (Significant Orders and Pending Filings) (Details) - PSE&G [Member] $ in Millions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Nov. 30, 2016 USD ($) | Oct. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jul. 31, 2016 USD ($) | Jun. 30, 2016 USD ($) | Apr. 30, 2016 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) $ / DTH | Oct. 01, 2016
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |  |
Deferred Storm and Property Reserve Deficiency, Noncurrent |  |  |  |  |  |  |  | $ 220 |
Self Implementing Bill Credit per therm | $ / DTH |  |  |  |  |  |  |  | 0.08 |
Current BGSS rate per therm |  |  |  |  |  |  |  | 0.40 |
Proposed BGSS rate per therm |  |  |  |  |  |  |  |  | 0.34
True-up adjustment for Transmission Formula Rate Revenues |  |  |  |  |  |  |  | $ (34) |
Public Utilities, Requested Rate Increase (Decrease), Amount |  | $ 121 |  |  |  |  |  |  |
Proposed Recovery of costs for Electric Green Energy Program |  |  |  |  | $ 44 |  |  |  |
Proposed Recovery of costs for Gas Green Energy Programs |  |  |  |  | 13 |  |  |  |
Public Utilities, Approved Additional Capital Expenditures | $ 80 |  |  |  |  |  |  |  |
Public Utilities, Requested Return on Equity, Percentage | 9.75% |  |  |  |  |  |  |  |
Gas Distribution [Member] |  |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  |  |  | 23 |  |  |  |
Gas System Modernization Program [Member] |  |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  | $ 10 |  |  |  |  |  |  |
Electric Distribution [Member] |  |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  | $ 12 |  | 16 |  |  |  |
Overrecovered Gas and Electric Costs - BGSS and BGS [Member] |  |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |  |
BGSS Revenue Reduction |  |  |  |  | $ 87 |  |  |  |
Weather Normalization Clause [Member] |  |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  |  | $ 54 |  |  |  |  |
Remediation Adjustment Charge (Other SBC) [Member] |  |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount | $ 41 |  |  |  |  | $ 54 |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |  |
BGSS Revenue Reduction |  |  |  |  |  |  | $ 47 |  |

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