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Income Taxes (Schedule Of Effective Tax Rates) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Income Taxes [Line Items] |  |  |  |
Pre-Tax Income | $ 98 | $ (239) | $ (56) | $ 526
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 21 | (50) | (12) | 110
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 6 | (24) | (22) | 18
Income Tax Reconciliation Deductions Nuclear Decommissioning Trust | (18) | 9 | (24) | 18
Effective Income Tax Rate Reconciliation, GPRC | (8) | (2) | (14) | (3)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount | (32) | (40) | (106) | (118)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | 0 | 10 | (3) | (1)
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount | (54) | (12) | (173) | (55)
Income Tax Provision | $ (33) | $ (62) | $ (185) | $ 55
Effective tax rate | (33.70%) | 25.90% | 330.40% | 10.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  | 21.00% |
Effective Income Tax Reconciliation, Tax Credit Amortization/Recapture | $ (2) | $ 35 | $ (4) | $ 31
Public Service Electric and Gas Company [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Pre-Tax Income | 361 | 370 | 959 | 926
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | 76 | 78 | 201 | 194
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount | 25 | 25 | 67 | 63
Effective Income Tax Rate Reconciliation, GPRC | (8) | (2) | (14) | (3)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount | (32) | (40) | (106) | (118)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | (5) | 0 | (3) | 4
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount | (20) | (17) | (56) | (54)
Income Tax Provision | $ 56 | $ 61 | $ 145 | $ 140
Effective tax rate | 15.50% | 16.50% | 15.10% | 15.10%

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