Schedule Of Consolidated Debt (Short-Term Liquidity) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 4,153
Line of Credit Facility, Amount Outstanding		610
Available Liquidity		3,543
Commercial Paper and Loans		$ 388	$ 364
Commitments of single institution as percentage of total commitments		7.00%
PSEG [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 1,000
Line of Credit Facility, Amount Outstanding		398
Available Liquidity		602
PSE&G [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		600
Line of Credit Facility, Amount Outstanding		14
Available Liquidity		586
Commercial Paper and Loans		0	$ 153
Power [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		2,553
Line of Credit Facility, Amount Outstanding		198
Available Liquidity		2,355
5-year Credit Facility, April 2019 [Member] | PSEG [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		500
Line of Credit Facility, Amount Outstanding		10
Available Liquidity		$ 490
Expiration Date		Mar 2019
5-year Credit Facility, April 2019 [Member] | Power [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 1,600
Line of Credit Facility, Amount Outstanding		195
Available Liquidity		$ 1,405
Expiration Date		Mar 2019
Five Year Credit Facility Maturing on April 2020 [Member] | PSEG [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	[1]	$ 500
Line of Credit Facility, Amount Outstanding	[2]	388
Available Liquidity		112
Commercial Paper and Loans		$ 388
Expiration Date		Apr 2020
Credit Facility Reduction in March 2018	[3]	$ 12
Short-term Debt, Weighted Average Interest Rate		1.03%
Five Year Credit Facility Maturing on April 2020 [Member] | PSE&G [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	[4]	$ 600
Line of Credit Facility, Amount Outstanding	[2]	14
Available Liquidity		$ 586
Expiration Date		Apr 2020
Credit Facility Reduction in March 2018	[3]	$ 14
Five Year Credit Facility Maturing on April 2020 [Member] | Power [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	[3]	953
Line of Credit Facility, Amount Outstanding		3
Available Liquidity		$ 950
Expiration Date		Apr 2020
Credit Facility Reduction in March 2018	[3]	$ 24

[1] PSEG facility will be reduced by $12 million in March 2018.

[2] 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, 2016, PSEG had $388 million outstanding at a weighted average interest rate of 1.03%. PSE&G had no amounts outstanding under its Commercial Paper Program as of December 31, 2016.

[3] PSE&G facility will be reduced by $14 million in March 2018.

[4] Power facility will be reduced by $24 million in March 2018.