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Condensed Consolidated Statements of Stockholders Equity Condensed Consolidated Statements of Stockholders Equity - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	AOCI Attributable to Parent [Member]	Public Service Electric and Gas Company [Member]	Public Service Electric and Gas Company [Member] Cumulative Effect, Period of Adoption, Adjustment	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] Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	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]	PSEG Power [Member]	PSEG Power [Member] Retained Earnings [Member]	PSEG Power [Member] AOCI Attributable to Parent [Member]	PSEG Power [Member] Contributed Capital [Member]	PSEG Power [Member] Basis Adjustment [Member]
Shares, Outstanding			534	(30)
Total Stockholder's Equity	$ 15,089	$ (2)	$ 5,003	$ (831)	$ 11,406	$ (2)	$ (489)	$ 11,903	$ (2)	$ 892	$ 8,928	$ (2)	$ 2	$ 1,095	$ 986	$ 5,890	$ 5,063	$ (401)	$ 2,214	$ (986)
Net Income	448				448			440			440					13	13
Other Comprehensive Income (Loss), Net of Tax	8						8	0					0			9		9
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	456							440								22
Dividends, Common Stock, Cash	(248)				(248)		0	(175)			(175)
Stockholders' Equity, Other	(46)		$ (9)	$ (37)	0		0
Stockholders' Equity, Other Shares			0	0
Shares, Outstanding			534	(30)
Total Stockholder's Equity	15,249		$ 4,994	$ (868)	11,604		(481)	12,166		892	9,191		2	1,095	986	5,912	5,076	(392)	2,214	(986)
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	6,212	5,307	(419)	2,310	(986)
Net Income	648				648			477			477					161	161
Other Comprehensive Income (Loss), Net of Tax	(38)						(38)	(3)					(3)			(30)		(30)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	610							474								131
Dividends, Common Stock, Cash	(258)				(258)		0									(175)	(175)
Stockholders' Equity, Other	(59)		$ (18)	$ (41)	0		0
Stockholders' Equity, Other Shares			0	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	$ 6,168	$ 5,293	$ (449)	$ 2,310	$ (986)

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

This element represents movements included in the statement of changes in stockholders' equity which are not separately disclosed or provided for elsewhere in the taxonomy.

+ References

No definition available.

+ Details

Name:	us-gaap_StockholdersEquityOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Number of increase (decrease) in shares of stock classified as other.

+ References

No definition available.

+ Details

Name:	us-gaap_StockholdersEquityOtherShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration