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Income Taxes (Schedule Of Effective Tax Rates) (Detail) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Income Taxes [Line Items] |  |
Pre-Tax Income | $ (154) | $ 765
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | (32) | 161
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | (29) | 41
Income Tax Reconciliation Deductions Nuclear Decommissioning Trust | (6) | 8
Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Amount | 0 | (7)
Effective Income Tax Rate Reconciliation, GPRC | (6) | (1)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount | (73) | (78)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | (6) | (7)
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount | (120) | (44)
Income Tax Provision | $ (152) | $ 117
Effective tax rate | 98.70% | 15.30%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% |
Public Service Electric and Gas Company [Member] |  |
Income Taxes [Line Items] |  |
Pre-Tax Income | $ 598 | $ 556
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 126 | 117
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 41 | 38
Effective Income Tax Rate Reconciliation, GPRC | (6) | (1)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount | (73) | (78)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | 1 | 3
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount | (37) | (38)
Income Tax Provision | $ 89 | $ 79
Effective tax rate | 14.90% | 14.20%

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