Organization, Basis Of Presentation And Summary Of Significant Accounting Policies Organization, Basic of Presentation And Summary Of Significant Accounting Policies (Cash, Cash Equivalents and Restricted Cash) (Details) - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Cash and Cash Equivalents		$ 818	$ 543
Restricted Cash and Investments, Noncurrent		17	22
Restricted Cash and Investments, Current		28	7
Cash, Cash Equivalents and Restricted Cash		863	572	$ 176	$ 199
Public Service Electric and Gas Company
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Cash and Cash Equivalents		294	204
Restricted Cash and Investments, Noncurrent		17	22
Restricted Cash and Investments, Current		28	7
Cash, Cash Equivalents and Restricted Cash		339	233	$ 50	$ 61
Other [Member]
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Cash and Cash Equivalents		524	339
Restricted Cash and Investments, Noncurrent		0	0
Restricted Cash and Investments, Current		0	0
Cash, Cash Equivalents and Restricted Cash	[1]	$ 524	$ 339

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