Schedule Of Consolidated Debt (Short-Term Liquidity) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 4,200
Line of Credit Facility, Amount Outstanding		552
Available Liquidity		3,648
Commercial Paper and Loans		$ 364	$ 0
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		221
Available Liquidity		779
PSE&G [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		600
Line of Credit Facility, Amount Outstanding		167
Available Liquidity		433
Commercial Paper and Loans		153	$ 0
Power [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		2,600
Line of Credit Facility, Amount Outstanding		164
Available Liquidity		2,436
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		Apr 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		161
Available Liquidity		$ 1,439
Expiration Date		Apr 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]	211
Available Liquidity		289
Commercial Paper and Loans	[2]	$ 211
Expiration Date		Apr 2020
Credit Facility Reduction in April 2016	[3]	$ 23
Credit Facility Reduction in March 2018	[3]	$ 12
Short-term Debt, Weighted Average Interest Rate	[2]	0.96%
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]	167
Available Liquidity		433
Commercial Paper and Loans	[2]	$ 153
Expiration Date		Apr 2020
Credit Facility Reduction in April 2016	[3]	$ 29
Credit Facility Reduction in March 2018	[3]	$ 14
Short-term Debt, Weighted Average Interest Rate	[2]	0.91%
Five Year Credit Facility Maturing on April 2020 [Member] | Power [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	[3]	$ 1,000
Line of Credit Facility, Amount Outstanding		3
Available Liquidity		$ 997
Expiration Date		Apr 2020
Credit Facility Reduction in April 2016	[3]	$ 48
Credit Facility Reduction in March 2018	[3]	$ 24

[1] PSEG facility will be reduced by $23 million in April 2016 and $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, 2015, $211 million and $153 million, respectively, were outstanding. The weighted average interest rates on PSEG's and PSE&G's Commercial Paper Programs were 0.96% and 0.91%, respectively, at December 31, 2015.

[3] PSE&G facility will be reduced by $29 million in April 2016 and $14 million in March 2018.

[4] Power facility will be reduced by $48 million in April 2016 and $24 million in March 2018.