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Schedule Of Consolidated Capital Stock (Consolidated Capital Stock) (Details) - USD ($) $ / shares in Units, $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Class of Stock [Line Items] |  |  |
Common Stock, authorized |  | 1,000,000,000 | 1,000,000,000
Common Stock, Shares, outstanding | [1] | 505 | 504.866212
Common Stock, book value | [1] | $ 4,198 | $ 4,219
PSE&G [Member] |  |  |
Class of Stock [Line Items] |  |  |
Common Stock, authorized |  | 150,000,000 | 150,000,000
PSE&G [Member] | Preferred Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Common Stock, authorized |  | 7,500,000 |
Preferred stock, par value |  | $ 100 |
PSE&G [Member] | Cumulative Preferred Stock [Member] |  |  |
Class of Stock [Line Items] |  |  |
Common Stock, authorized |  | 10,000,000 |
Preferred stock, par value |  | $ 25 |
[1] | PSEG did not issue any new shares under the Dividend Reinvestment and Stock Purchase Plan (DRASPP) or the Employee Stock Purchase Plan (ESPP) in 2017 or 2016.

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