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Asset Retirement Obligations (AROs) (Impact Of The Revisions On Asset Retirement Obligation) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |
ARO Liability, Beginning Balance |  | $ 743 | $ 677
Liabilities Settled |  | (5) | (2)
Liabilities Incurred |  | 14 | 23
Accretion Expense |  | 26 | 30
Accretion Expense Deferred and Recovered in Rate Base | [1] | 16 | 15
ARO Liability, Ending Balance |  | 679 | 743
Asset Retirement Obligation, Revision of Estimate |  | (115) |
PSE&G [Member] |  |  |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |
ARO Liability, Beginning Balance |  | 290 | 274
Liabilities Settled |  | (4) | (2)
Liabilities Incurred |  | 1 | 3
Accretion Expense |  | 0 | 0
Accretion Expense Deferred and Recovered in Rate Base | [1] | 16 | 15
ARO Liability, Ending Balance |  | 218 | 290
Asset Retirement Obligation, Revision of Estimate |  | (85) |
Power [Member] |  |  |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |
ARO Liability, Beginning Balance |  | 450 | 400
Liabilities Settled |  | (1) | 0
Liabilities Incurred |  | 12 | 20
Accretion Expense |  | 26 | 30
Accretion Expense Deferred and Recovered in Rate Base | [1] | 0 | 0
ARO Liability, Ending Balance |  | 457 | 450
Asset Retirement Obligation, Revision of Estimate |  | (30) |
Other [Member] |  |  |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |
ARO Liability, Beginning Balance |  | 3 | 3
Liabilities Settled |  | 0 | 0
Liabilities Incurred |  | 1 | 0
Accretion Expense |  | 0 | 0
Accretion Expense Deferred and Recovered in Rate Base | [1] | 0 | 0
ARO Liability, Ending Balance |  | 4 | $ 3
Asset Retirement Obligation, Revision of Estimate |  | $ 0 |
[1] | 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://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Asset Retirement Obligation -URI http://asc.fasb.org/extlink&oid=6505190 + 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://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -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 incurred during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + 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://www.xbrl.org/2003/role/presentationRef -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 the Increase or Decrease in the amount of the asset retirement obligation during the current period for changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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