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Asset Retirement Obligations (AROs) (Impact Of The Revisions On Asset Retirement Obligation) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Jun. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |  |  |
ARO Liability, Beginning Balance |  |  |  | $ 1,212 | $ 1,087
Liabilities Settled |  |  |  | (15) | (9)
Adjustments | [1] |  |  | (37) |
Accretion Expense |  |  |  | 44 | 42
Accretion Expense Deferred and Recovered in Rate Base | [2] |  |  | 16 | 17
Revision to Present Value of Future Cash Flows |  |  |  | 353 | 75
ARO Liability, Ending Balance |  | $ 1,573 |  | 1,573 | 1,212
Public Service Electric and Gas Company |  |  |  |  |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |  |  |
ARO Liability, Beginning Balance |  |  |  | 314 | 303
Liabilities Settled |  |  |  | (14) | (7)
Adjustments | [1] |  |  | 0 |
Accretion Expense |  |  |  | 0 | 0
Accretion Expense Deferred and Recovered in Rate Base | [2] |  |  | 16 | 17
Revision to Present Value of Future Cash Flows |  |  |  | 47 | 1
ARO Liability, Ending Balance |  | 363 |  | 363 | 314
Other [Member] |  |  |  |  |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |  |  |
ARO Liability, Beginning Balance |  |  |  | 898 | 784
Liabilities Settled |  |  |  | (1) | (2)
Adjustments | [1] |  |  | (37) |
Accretion Expense |  |  |  | 44 | 42
Accretion Expense Deferred and Recovered in Rate Base | [2] |  |  | 0 | 0
Revision to Present Value of Future Cash Flows |  | 255 | $ 51 | 306 | 74
ARO Liability, Ending Balance |  | $ 1,210 |  | $ 1,210 | $ 898
[1] | Represents amounts related to the sale of the solar plants and the fossil generating assets classified as Held for Sale.
[2] | Not reflected as expense in Consolidated Statements of Operations.

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- Definition Accretion Expense Deferred And Recovered In Rate Base + References No definition available. + Details
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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848 + Details
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- Definition Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 35 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6392603&loc=d3e7123-110846 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of asset retirement obligations settled through noncash transactions. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4313-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 + Details
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