Condensed Consolidated Statements Of Operations (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
OPERATING REVENUES	$ 2,620	$ 3,114	$ 8,443	$ 9,048
OPERATING EXPENSES
Energy Costs	1,167	1,261	3,740	4,021
Operation and Maintenance	603	591	1,829	1,862
Depreciation and Amortization	263	260	739	716
Taxes Other Than Income Taxes	31	31	102	101
Total Operating Expenses	2,064	2,143	6,410	6,700
OPERATING INCOME	556	971	2,033	2,348
Income from Equity Method Investments	1	4	8	12
Other Income	45	75	176	165
Other Deductions	(11)	(9)	(39)	(37)
Other-Than-Temporary Impairments	(8)	(3)	(13)	(9)
Interest Expense	(117)	(120)	(361)	(356)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	466	918	1,804	2,123
Income Tax (Expense) Benefit	(201)	(371)	(757)	(856)
INCOME FROM CONTINUING OPERATIONS	265	547	1,047	1,267
Income (Loss) from Discontinued Operations, including Gain on Disposal, net of tax (expense) benefit of $(15) and $(11) for the three months and $(51) and $(10) for the nine months ended 2011 and 2010, respectively	29	20	96	15
NET INCOME	294	567	1,143	1,282
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (THOUSANDS):
BASIC	505,909	505,945	505,959	506,001
DILUTED	506,999	506,968	506,963	507,068
EARNINGS PER SHARE
INCOME FROM CONTINUING OPERATIONS, BASIC	$ 0.52	$ 1.08	$ 2.07	$ 2.50
NET INCOME, BASIC	$ 0.58	$ 1.12	$ 2.26	$ 2.53
INCOME FROM CONTINUING OPERATIONS, DILUTED	$ 0.52	$ 1.08	$ 2.06	$ 2.50
NET INCOME, DILUTED	$ 0.58	$ 1.12	$ 2.25	$ 2.53
DIVIDENDS PAID PER SHARE OF COMMON STOCK	$ 0.3425	$ 0.3425	$ 1.0275	$ 1.0275
Power [Member]
OPERATING REVENUES	1,398	1,523	4,650	4,983
OPERATING EXPENSES
Energy Costs	597	620	2,335	2,483
Operation and Maintenance	262	253	810	764
Depreciation and Amortization	56	43	166	130
Total Operating Expenses	915	916	3,311	3,377
OPERATING INCOME	483	607	1,339	1,606
Other Income	37	44	156	126
Other Deductions	(10)	(9)	(37)	(36)
Other-Than-Temporary Impairments	(8)	(2)	(10)	(8)
Interest Expense	(42)	(37)	(134)	(119)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	460	603	1,314	1,569
Income Tax (Expense) Benefit	(187)	(239)	(539)	(632)
INCOME FROM CONTINUING OPERATIONS	273	364	775	937
Income (Loss) from Discontinued Operations, including Gain on Disposal, net of tax (expense) benefit of $(15) and $(11) for the three months and $(51) and $(10) for the nine months ended 2011 and 2010, respectively	29	20	96	15
NET INCOME	302	384	871	952
PSE&G [Member]
OPERATING REVENUES	1,841	2,007	5,718	5,987
OPERATING EXPENSES
Energy Costs	943	1,115	3,124	3,572
Operation and Maintenance	342	327	1,014	1,084
Depreciation and Amortization	197	209	548	563
Taxes Other Than Income Taxes	31	31	102	101
Total Operating Expenses	1,513	1,682	4,788	5,320
OPERATING INCOME	328	325	930	667
Other Income	7	14	16	22
Other Deductions	(1)	(1)	(2)	(2)
Other-Than-Temporary Impairments	0	0	(1)	0
Interest Expense	(77)	(82)	(234)	(239)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	257	256	709	448
Income Tax (Expense) Benefit	(103)	(101)	(287)	(172)
NET INCOME	154	155	422	276
Preferred Stock Dividends	0	0	0	(1)
EARNINGS AVAILABLE TO PUBLIC SERVICE ENTERPRISE GROUP INCORPORATED	$ 154	$ 155	$ 422	$ 275