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Regulatory Assets And Liabilities (Schedule Of Regulatory Assets and Liabilities) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2018
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Current | $ 369 | $ 351 |
Regulatory Assets, Noncurrent | 3,872 | 3,677 |
Regulatory Liability, Current | 294 | 234 |
Regulatory Liabilities, Noncurrent | 2,707 | 3,002 |
Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Current | 369 | 351 |
Regulatory Assets, Noncurrent | 3,872 | 3,677 |
Total Regulatory Assets | 4,241 | 4,028 |
Regulatory Liability, Current | 294 | 234 |
Regulatory Liabilities, Noncurrent | 2,707 | 3,002 |
Total Regulatory Liabilities | 3,001 | 3,236 |
Flowback of tax benefits | 31 | 58 |
Tax Adjustment Credit [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Liability, Current | 5 | 12 |
Excess Deferred Income Taxes [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Liability, Current | 223 | 193 |
Regulatory Liabilities, Noncurrent | 2,670 | 2,955 |
Weather Normalization Clause [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Liability, Current | 2 | 15 |
Electric and Gas Cost Of Removal [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Liabilities, Noncurrent | 37 | 47 |
Other [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Liability, Current | 27 | 4 |
ZEC Liability | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Liability, Current | 17 | 10 |
Tax Adjustment Credit [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Total Regulatory Assets |  |  | $ 581
Total Regulatory Liabilities |  |  | $ 581
New Jersey Clean Energy Program [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Current | 143 | 143 |
Green Program Recovery Charge [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 139 | 118 |
Pension and Other Postretirement Benefit Costs [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 1,489 | 1,284 |
Deferred Income Taxes [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 1,014 | 966 |
Manufactured Gas Plant (MGP) Remediation Costs [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 320 | 357 |
Base Rate Case [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Current | 56 | 56 |
Regulatory Assets, Noncurrent | 103 | 159 |
Remediation Adjustment Charge (Other SBC) [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 134 | 158 |
Conditional Asset Retirement Obligation [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 184 | 172 |
Electric and Gas Cost Of Removal [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 189 | 216 |
Unamortized Loss On Reacquired Debt And Debt Expense [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 36 | 42 |
Other [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Current | 5 | 13 |
Regulatory Assets, Noncurrent | 88 | 166 |
Underrecovered Electric Costs Basic Generation Service [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Current | 60 | 57 |
Societal Benefits Charges Sbc [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Current | 82 | 30 |
Formula Rate True up | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Current | 23 | 52 |
Deferred Storm Costs | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 99 | 12 |
COVID-19 Deferral | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 51 | 0 |
Gas Costs - BGSS | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Regulatory Assets, Noncurrent | 26 | 27 |
Regulatory Liability, Current | $ 20 | 0 |
Transmission related over remaining useful life [Member] | Public Service Electric and Gas Company |  |  |
Regulatory Assets And Liabilities [Line Items] |  |  |
Excess Deferred income taxes to be refunded |  | $ 940 |

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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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