Valuation And Qualifying Accounts (Schedule Of Valuation And Qualifying Accounts) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Allowance For Doubtful Accounts [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		$ 337	[1]	$ 206		$ 68	[1]
Additions, Charged to cost and expenses	[2]	114		195		175
Additions, Charged to other accounts-describe		0		0		0
Deductions-describe	[3]	112		64		37
Balance at End of Period		339		337	[1]	206
Allowance For Doubtful Accounts [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period				206
Balance at End of Period						206
Materials And Supplies Valuation Reserve [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		12		10		11
Additions, Charged to cost and expenses		1		3		1
Additions, Charged to other accounts-describe		0		0		0
Deductions-describe	[4]	3		1		2
Balance at End of Period		10		12		10
Public Service Electric and Gas Company | Allowance For Doubtful Accounts [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		337	[5]	206		68	[1]
Additions, Charged to cost and expenses	[6]	114		195		175
Additions, Charged to other accounts-describe		0		0		0
Deductions-describe	[7]	112		64		37
Balance at End of Period		339		337	[5]	206
Public Service Electric and Gas Company | Allowance For Doubtful Accounts [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period				206
Balance at End of Period						206
Public Service Electric and Gas Company | Materials And Supplies Valuation Reserve [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		3		2		2
Additions, Charged to cost and expenses		1		2		0
Additions, Charged to other accounts-describe		0		0		0
Deductions-describe		0		1	[8]	0
Balance at End of Period		$ 4		$ 3		$ 2

[1] Includes $8 million due to the adoption of ASU 2016-13.

[2] For a discussion of bad debt recoveries, see Item 8. Note 1. Organization, Basis of Presentation and Significant Accounting Policies.

[3] Accounts Receivable written off.

[4] Reserve reduced to appropriate level as a result of asset dispositions and to remove obsolete inventory.

[5] Includes $8 million due to the adoption of ASU 2016-13.

[6] For a discussion of bad debt recoveries, see Item 8. Note 1. Organization, Basis of Presentation and Significant Accounting Policies.

[7] Accounts Receivable written off.

[8] Reserve reduced to appropriate level and to remove obsolete inventory.