Condensed Consolidated Statements of Stockholders Equity Condensed Consolidated Statements of Stockholders Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Public Service Electric and Gas Company [Member]	Public Service Electric and Gas Company [Member] Common Stock [Member]	Public Service Electric and Gas Company [Member] Retained Earnings [Member]	Public Service Electric and Gas Company [Member] AOCI Attributable to Parent [Member]	Public Service Electric and Gas Company [Member] Contributed Capital [Member]	Public Service Electric and Gas Company [Member] Basis Adjustment [Member]
Shares, Outstanding		534	(30)
Total Stockholder's Equity	$ 15,984	$ 5,031	$ (861)	$ 12,318	$ (504)	$ 13,129	$ 892	$ 10,078	$ 3	$ 1,170	$ 986
Net Income	648			648		477		477
Other Comprehensive Income (Loss), Net of Tax	(38)				(38)	(3)			(3)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	610					474
Dividends, Common Stock, Cash	(258)			(258)	0
Stockholders' Equity, Other	(59)	$ (18)	$ (41)	0	0
Stockholders' Equity, Other Shares		0	0
Other Comprehensive Income (Loss), Tax	24					1
Payments for Share Repurchase Program	0
Shares, Outstanding		534	(30)
Total Stockholder's Equity	16,277	$ 5,013	$ (902)	12,708	(542)	13,603	892	10,555	0	1,170	986
Shares, Outstanding		534	(30)
Total Stockholder's Equity	14,438	$ 5,045	$ (896)	10,639	(350)	14,573	892	11,524	1	1,170	986
Net Income	(2)			(2)		509		509
Other Comprehensive Income (Loss), Net of Tax	(60)				(60)	(3)			(3)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(62)					506
Dividends, Common Stock, Cash	(271)			(271)	0
Treasury Stock, Shares, Acquired			(7)
Stockholders' Equity, Other	(7)	$ (17)	$ 10	0	0
Stockholders' Equity, Other Shares		0	0
Other Comprehensive Income (Loss), Tax	39					1
Payments for Share Repurchase Program	(500)	$ (50)	$ (450)
Shares, Outstanding		534	(37)
Total Stockholder's Equity	$ 13,598	$ 4,978	$ (1,336)	$ 10,366	$ (410)	$ 15,079	$ 892	$ 12,033	$ (2)	$ 1,170	$ 986