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