Pension, OPEB and Savings Plans (Schedule Of Amount Paid For Employer Matching Contributions) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total Employer Matching Contributions	$ 40	$ 41	$ 41
PSEG Power LLC
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total Employer Matching Contributions	10	10	11
Public Service Electric and Gas Company
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total Employer Matching Contributions	25	26	25
Other [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total Employer Matching Contributions	$ 5	$ 5	$ 5