Property, Plant And Equipment And Jointly-Owned Facilities (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Public Utility, Property, Plant and Equipment [Line Items]
Other	$ 501	$ 1,396
Total	43,684	48,569
Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	38,588	36,300
Other	1,807	1,739
Total	38,588	36,300
Electric Transmission [Member] | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	15,544	14,075
Electric Distribution [Member] | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	10,223	9,622
Gas Distribution [Member] | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	9,818	9,081
Construction Work In Progress [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	177	248
Construction Work In Progress [Member] | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	1,196	1,783
Fossil Production [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	0	6,581
Nuclear Production [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	3,656	3,296
Nuclear Fuel [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	$ 762	$ 748