Property, Plant and Equipment and Jointly-Owned Facilities - Schedule Of Property, Plant And Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Public Utility, Property, Plant and Equipment [Line Items]
Total	$ 51,207	$ 48,603
Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Other	2,136	1,992
Total	46,198	43,753
Public Service Electric Gas and Other Company [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Other	408	358
Total	5,009	4,850
Electric Transmission | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	17,874	17,379
Electric Distribution | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	12,520	11,554
Gas Distribution and Transmission | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	12,536	11,545
Construction Work In Progress | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	1,132	1,283
Construction Work In Progress | Public Service Electric Gas and Other Company [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	159	224
Nuclear Production | Public Service Electric Gas and Other Company [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	3,649	3,496
Nuclear Fuel in Service | Public Service Electric Gas and Other Company [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	$ 793	$ 772