Consolidated Statements Of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	PSE&G [Member]	PSE&G [Member] Common Stock [Member]	PSE&G [Member] Contributed Capital [Member]	PSE&G [Member] Basis Adjustment [Member]	PSE&G [Member] Retained Earnings [Member]	PSE&G [Member] Accumulated Other Comprehensive Income (Loss) [Member]	Power [Member]	Power [Member] Contributed Capital [Member]	Power [Member] Basis Adjustment [Member]	Power [Member] Retained Earnings [Member]	Power [Member] Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance (in value) at Dec. 31, 2012	$ 10,781	$ 4,833	$ (607)	$ 6,942	$ (388)	$ 1	$ 5,175	$ 892	$ 420	$ 986	$ 2,875	$ 2	$ 5,630	$ 2,190	$ (986)	$ 4,754	$ (328)
Beginning Balance, shares at Dec. 31, 2012		534	(28)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,243			1,243			612				612		644			644
Other Comprehensive Income (Loss), net of tax
Other Comprehensive Income (Loss), net of tax	293				293	0	(1)					(1)	265				265
Comprehensive Income	1,536						611						909
Contributed Capital							100		100				24	24
Cash Dividends on Common Stock	(728)			(728)	0	0							(705)			(705)
Other	20	$ 28	$ (8)	0	0	0
Ending Balance (in value) at Dec. 31, 2013	11,609	$ 4,861	$ (615)	7,457	(95)	1	5,886	892	520	986	3,487	1	5,858	2,214	(986)	4,693	(63)
Ending Balance, shares at Dec. 31, 2013		534	(28)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,518			1,518			725				725		760			760
Other Comprehensive Income (Loss), net of tax
Other Comprehensive Income (Loss), net of tax	(188)				(188)		1					1	(165)				(165)
Comprehensive Income	1,330						726						595
Contributed Capital							175		175				0
Cash Dividends on Common Stock	(748)			(748)									(895)			(895)
Other	(5)	$ 15	$ (20)
Ending Balance (in value) at Dec. 31, 2014	12,186	$ 4,876	$ (635)	8,227	(283)	1	6,787	892	695	986	4,212	2	5,558	2,214	(986)	4,558	(228)
Ending Balance, shares at Dec. 31, 2014		534	(28)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,679			1,679			787				787		856			856
Other Comprehensive Income (Loss), net of tax
Other Comprehensive Income (Loss), net of tax	(12)				(12)		(1)					(1)	(12)				(12)
Comprehensive Income	1,667						786						844
Contributed Capital							0						0
Cash Dividends on Common Stock	(789)			(789)									(400)			(400)
Other	3	$ 39	$ (36)
Ending Balance (in value) at Dec. 31, 2015	$ 13,067	$ 4,915	$ (671)	$ 9,117	$ (295)	$ 1	$ 7,573	$ 892	$ 695	$ 986	$ 4,999	$ 1	$ 6,002	$ 2,214	$ (986)	$ 5,014	$ (240)
Ending Balance, shares at Dec. 31, 2015		534	(28)