Organization and Basis of Presentation Organization and Basis of Presentation (Details) - USD ($) $ in Millions		Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Cash and Cash Equivalents		$ 1,205	$ 465
Restricted Cash in Other Current Assets		29	27
Restricted Cash in Other Noncurrent Assets		20	19
Cash, Cash Equivalents and Restricted Cash		1,254	511	$ 1,642	$ 863
Public Service Electric and Gas Company [Member]
Cash and Cash Equivalents		814	220
Restricted Cash in Other Current Assets		29	27
Restricted Cash in Other Noncurrent Assets		20	19
Cash, Cash Equivalents and Restricted Cash		863	266	$ 949	$ 339
PSEG Power & Other
Cash and Cash Equivalents	[1]	391	245
Restricted Cash in Other Current Assets	[1]	0	0
Restricted Cash in Other Noncurrent Assets	[1]	0	0
Cash, Cash Equivalents and Restricted Cash	[1]	$ 391	$ 245

[1] Includes amounts applicable to PSEG Power, Energy Holdings, Services and PSEG (parent company).