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.