Condensed Consolidated Statements Of Operations (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
OPERATING REVENUES	$ 2,469	$ 2,361	$ 5,823	$ 5,934
OPERATING EXPENSES
Energy Costs	1,010	1,072	2,573	2,760
Operation and Maintenance	575	601	1,226	1,271
Depreciation and Amortization	235	229	476	456
Taxes Other Than Income Taxes	28	28	71	70
Total Operating Expenses	1,848	1,930	4,346	4,557
OPERATING INCOME	621	431	1,477	1,377
Income from Equity Method Investments	4	5	7	8
Other Income	55	47	131	90
Other Deductions	(15)	(12)	(28)	(28)
Other-Than-Temporary Impairments	(1)	(5)	(5)	(6)
Interest Expense	(117)	(120)	(244)	(236)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	547	346	1,338	1,205
Income Tax (Expense) Benefit	(227)	(124)	(556)	(485)
INCOME FROM CONTINUING OPERATIONS	320	222	782	720
Income (Loss) from Discontinued Operations, including Gain on Disposal	3	2	67	(5)
NET INCOME	323	224	849	715
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (THOUSANDS):
BASIC	505,988	506,109	505,984	506,030
DILUTED	506,761	507,091	506,945	507,119
EARNINGS PER SHARE:
INCOME FROM CONTINUING OPERATIONS, BASIC	$ 0.63	$ 0.44	$ 1.55	$ 1.42
NET INCOME, BASIC	$ 0.63	$ 0.44	$ 1.68	$ 1.41
INCOME FROM CONTINUING OPERATIONS, DILUTED	$ 0.63	$ 0.44	$ 1.54	$ 1.42
NET INCOME, DILUTED	$ 0.63	$ 0.44	$ 1.67	$ 1.41
DIVIDENDS PAID PER SHARE OF COMMON STOCK	$ 0.3425	$ 0.3425	$ 0.6850	$ 0.6850
Power [Member]
OPERATING REVENUES	1,285	1,264	3,252	3,460
OPERATING EXPENSES
Energy Costs	603	612	1,738	1,863
Operation and Maintenance	271	260	548	511
Depreciation and Amortization	56	44	110	87
Total Operating Expenses	930	916	2,396	2,461
OPERATING INCOME	355	348	856	999
Other Income	49	43	119	82
Other Deductions	(14)	(13)	(26)	(27)
Other-Than-Temporary Impairments	(1)	(5)	(3)	(6)
Interest Expense	(41)	(42)	(92)	(82)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	348	331	854	966
Income Tax (Expense) Benefit	(143)	(129)	(352)	(393)
INCOME FROM CONTINUING OPERATIONS	205	202	502	573
Income (Loss) from Discontinued Operations, including Gain on Disposal	3	2	67	(5)
NET INCOME	208	204	569	568
PSE&G [Member]
OPERATING REVENUES	1,571	1,536	3,877	3,980
OPERATING EXPENSES
Energy Costs	815	917	2,181	2,457
Operation and Maintenance	304	343	672	757
Depreciation and Amortization	172	177	351	354
Taxes Other Than Income Taxes	28	28	71	70
Total Operating Expenses	1,319	1,465	3,275	3,638
OPERATING INCOME	252	71	602	342
Other Income	4	3	9	8
Other Deductions	0	0	(1)	(1)
Other-Than-Temporary Impairments	0	0	(1)	0
Interest Expense	(78)	(80)	(157)	(157)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	178	(6)	452	192
Income Tax (Expense) Benefit	(73)	9	(184)	(71)
NET INCOME	105	3	268	121
Preferred Stock Dividends	0	0	0	(1)
EARNINGS AVAILABLE TO PUBLIC SERVICE ENTERPRISE GROUP INCORPORATED	$ 105	$ 3	$ 268	$ 120