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Valuation and Qualifying Accounts - Schedule Of Valuation And Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Allowance for Credit Losses [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period $ 283 $ 339 $ 337
Additions, Charged to cost and expenses [1] 103 100 114
Additions, Charged to other accounts-describe 0 0 0
Deductions-describe [2] 171 156 112
Balance at End of Period 215 283 339
Allowance for Credit Losses [Member] | Public Service Electric and Gas Company      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 283 339 337
Additions, Charged to cost and expenses [3] 103 100 114
Additions, Charged to other accounts-describe 0 0 0
Deductions-describe [4] 171 156 112
Balance at End of Period 215 283 339
Materials And Supplies Valuation Reserve [Member]      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 14 10 12
Additions, Charged to cost and expenses 1 4 1
Additions, Charged to other accounts-describe 0 0 0
Deductions-describe 2 0 3 [5]
Balance at End of Period 13 14 10
Materials And Supplies Valuation Reserve [Member] | Public Service Electric and Gas Company      
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 7 4 3
Additions, Charged to cost and expenses 1 3 1
Additions, Charged to other accounts-describe 0 0 0
Deductions-describe 2 0 0
Balance at End of Period $ 6 $ 7 $ 4
[1] For a discussion of bad debt recoveries, see Item 8. Note 1. Organization, Basis of Presentation and Summary of Significant Accounting Policies.
[2] Accounts Receivable written off.
[3] For a discussion of bad debt recoveries, see Item 8. Note 1. Organization, Basis of Presentation and Summary of Significant Accounting Policies.
[4] Accounts Receivable written off.
(C)
Reserve reduced to appropriate level and to remove obsolete inventory.
[5] Reserve reduced to appropriate level as a result of asset dispositions and to remove obsolete inventory.