Organization and Basis of Presentation Organization and Basis of Presentation (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Cash and Cash Equivalents		$ 1,186	$ 54
Restricted Cash in Other Current Assets		16	23
Restricted Cash in Other Noncurrent Assets		22	22
Cash, Cash Equivalents and Restricted Cash		1,224	99	$ 1,254	$ 511
Public Service Electric and Gas Company [Member]
Cash and Cash Equivalents		50	30
Restricted Cash in Other Current Assets		16	23
Restricted Cash in Other Noncurrent Assets		22	22
Cash, Cash Equivalents and Restricted Cash		88	75	$ 863	$ 266
PSEG Power & Other
Cash and Cash Equivalents	[1]	1,136	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]	$ 1,136	$ 24

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