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Income Taxes (Schedule Of Effective Tax Rates) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Income Taxes [Line Items] |  |  |  |
Pre-Tax Income | $ 65 | $ 55 | $ 2,394 | $ (1)
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 14 | 12 | 503 | 0
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | (1) | 7 | 157 | (16)
Uncertain Tax Positions | 1 | (5) | (6) | (6)
Effective Income Tax Rate Reconciliation, Leasing Activities, Amount | 0 | 0 | (17) | 0
Effective Income Tax Rate Reconciliation, GPRC | (13) | (11) | (36) | (25)
Effective Tax Rate Reconciliation, Effective Tax Rate Adjustment | 9 | (7) | (7) | (14)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount | (62) | (44) | (188) | (150)
Effective Income Tax Rate Reconciliation, Bad Debt Flow Through | (2) | (2) | (9) | (2)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | (15) | 3 | (24) | 9
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount | (88) | (71) | (126) | (244)
Income Tax Provision | (74) | (59) | $ 377 | (244)
Effective tax rate |  |  | 15.70% |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  | 21.00% |
Income Tax Reconciliation Deductions Nuclear Decommissioning Trust | (3) | (10) | $ 11 | (34)
Effective Income Tax Reconciliation, Tax Credit Amortization/Recapture | (2) | (2) | (7) | (6)
Public Service Electric and Gas Company [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Pre-Tax Income | 454 | 468 | 1,365 | 1,427
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 95 | 98 | 287 | 300
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 33 | 32 | 100 | 99
Uncertain Tax Positions | 0 | 0 | (5) | 0
Effective Income Tax Rate Reconciliation, GPRC | (13) | (11) | (36) | (25)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount | (62) | (44) | (188) | (150)
Effective Income Tax Rate Reconciliation, Bad Debt Flow Through | (2) | (2) | (9) | (2)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | 4 | (2) | (1) | (2)
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount | (42) | (29) | (146) | (86)
Income Tax Provision | $ 53 | $ 69 | $ 141 | $ 214
Effective tax rate | 11.70% | 14.70% | 10.30% | 15.00%
Effective Income Tax Reconciliation, Tax Credit Amortization/Recapture | $ (2) | $ (2) | $ (7) | $ (6)

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