Organization, Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash and Cash Equivalents		$ 125	$ 54
Restricted Cash in Other Current Assets		8	23
Restricted Cash in Other Noncurrent Assets		21	22
Cash, Cash Equivalents and Restricted Cash		154	99	$ 511	$ 863
Public Service Electric and Gas Company [Member]
Cash and Cash Equivalents		79	30
Restricted Cash in Other Current Assets		8	23
Restricted Cash in Other Noncurrent Assets		21	22
Cash, Cash Equivalents and Restricted Cash		108	75	$ 266	$ 339
PSEG Power & Other [Member]
Cash and Cash Equivalents	[1]	46	24
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]	$ 46	$ 24

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