Property, Plant and Equipment and Jointly-Owned Facilities - Schedule Of Property, Plant And Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Public Utility, Property, Plant and Equipment [Line Items]
Total	$ 53,920	$ 51,207
PSEG Power & Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Other	406	408
Total	5,168	5,009
Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Other	1,751	2,136
Total	48,752	46,198
Electric Transmission | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	18,701	17,874
Electric Distribution | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	13,717	12,520
Gas Distribution and Transmission | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	13,350	12,536
Construction Work In Progress | PSEG Power & Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	256	159
Construction Work In Progress | Public Service Electric and Gas Company
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	1,233	1,132
Nuclear Production | PSEG Power & Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	3,615	3,649
Nuclear Fuel in Service | PSEG Power & Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	$ 891	$ 793