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Schedule Of Consolidated Capital Stock (Consolidated Capital Stock) (Details) - USD ($) $ / shares in Units, $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Class of Stock [Line Items] |  |  |  |
Common Stock, authorized |  | 1,000,000,000 | 1,000,000,000 |
Common Stock, Shares, outstanding |  | 504,000,000 | 504,000,000 | [1]
Common Stock, Value, Outstanding | [1] | $ 4,170 | $ 4,172 |
Common Stock |  | $ 5,031 | $ 5,003 |
Public Service Electric and Gas Company |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common Stock, authorized |  | 150,000,000 | 150,000,000 |
Common Stock |  | $ 892 | $ 892 |
Public Service Electric and Gas Company | Preferred Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Common Stock, authorized |  | 7,500,000 |  |
Preferred stock, par value |  | $ 100 |  |
Public Service Electric and Gas Company | 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 or the Employee Stock Purchase Plan (ESPP) in 2020 or 2019.

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