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Regulatory Assets And Liabilities (Significant Orders and Pending Filings) (Details) $ in Millions | 1 Months Ended | 2 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Oct. 31, 2018 USD ($) | Aug. 31, 2018 USD ($) | Apr. 30, 2018 USD ($) | Feb. 28, 2018 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Maximum U.S. Corporate Income Tax Rate |  |  |  |  |  |  | 21.00% | 35.00%
PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Current BGSS rate per therm |  | 0.37 |  |  |  |  | 0.37 |
Proposed BGSS rate per therm |  | 0.35 |  |  |  |  | 0.35 |
True-up adjustment for Transmission Formula Rate Revenues |  | $ 27.0 |  |  |  |  | $ 27.0 |
Distribution Base rates [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | $ 13.0 |  |  |  |  |
Public Utilities, Approved Rate Base |  |  | $ 9,500.0 |  |  |  |  |
Public Utilities, Approved Return on Equity, Percentage |  |  | 9.60% |  |  |  |  |
Public Utilities, Approved Equity Capital Structure, Percentage |  |  | 54.00% |  |  |  |  |
Revenue Subject to Refund [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | $ 28.0 |  |  |  |  |
Gas Distribution [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  |  |  |  |  | 43.0 |
Transmission related unprotected deferred taxes [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  |  |  |  |  | 114.0 |
Gas System Modernization Program [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  | $ (21.0) |  |  |  |  |  |
Electric Distribution [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  |  |  |  |  | 71.0 |
Weather Normalization Clause [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | (14.0) |  | $ (55.0) |  |  |
Remediation Adjustment Charge (Other SBC) [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | (63.0) |  |  |  |  |
Electric Green Program Recovery [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  |  |  |  |  | (65.0) |
Gas Green Program Recovery [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount |  |  |  |  |  |  | (6.0) |
BGSS [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  |  |  |  |  | 26.0 |
Subsequent Event [Member] | Transmission Formula Rate [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount | $ 54.0 |  |  |  |  |  |  |
Subsequent Event [Member] | Remediation Adjustment Charge (Other SBC) [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Requested Rate Increase (Decrease), Amount | $ (73.0) |  |  |  |  |  |  |
2017 to 2018 [Member] | Weather Normalization Clause [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | 9.0 |  |  |  |  |
2015 to 2016 [Member] | Weather Normalization Clause [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  |  |  | (24.0) |  |  |
2016 to 2017 [Member] | Weather Normalization Clause [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | (23.0) |  | $ (31.0) |  |  |
Solar or EE Recovery Charge (RRC) [Member] | Gas Distribution [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | (15.0) |  |  |  |  |
Solar or EE Recovery Charge (RRC) [Member] | Electric Distribution [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | (58.0) |  |  |  |  |
Energy Strong program [Member] | Gas Distribution [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  |  | $ (0.1) |  |  |  |
Energy Strong program [Member] | Electric Distribution [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  |  | $ (0.6) |  | $ (8.0) |  |
Societal Benefits Charges Sbc [Member] | Gas Distribution [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  |  |  |  |  | 0.8 |
Societal Benefits Charges Sbc [Member] | Electric Distribution [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  |  |  |  |  | $ (20.0) |
Base Revenues [Member] | Distribution Base rates [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | (212.0) |  |  |  |  |
Return of Tax Benefits [Member] | Distribution Base rates [Member] | PSE&G [Member] |  |  |  |  |  |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |  |  |  |  |  |
Public Utilities, Approved Rate Increase (Decrease), Amount |  |  | $ 225.0 |  |  |  |  |

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