Consolidated Statements Of Operations (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
OPERATING REVENUES	$ 11,079	$ 11,793	$ 12,035
OPERATING EXPENSES
Energy Costs	4,747	5,261	5,433
Operation and Maintenance	2,481	2,504	2,534
Depreciation and Amortization	976	955	819
Taxes Other Than Income Taxes	133	136	133
Total Operating Expenses	8,337	8,856	8,919
OPERATING INCOME	2,742	2,937	3,116
Income from Equity Method Investments	4	4	17
Other Income	220	221	246
Other Deductions	(85)	(63)	(161)
Other-Than-Temporary Investments	(22)	(11)	(61)
Interest Expense	(475)	(472)	(521)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	2,384	2,616	2,636
Income Tax (Expense) Benefit	(977)	(1,059)	(1,042)
INCOME FROM CONTINUING OPERATIONS	1,407	1,557	1,594
Income (Loss) from Discontinued Operations, including Gain (Loss) on Disposal, net of tax benefit	96	7	(2)
Net Income	1,503	1,564	1,592
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (THOUSANDS):
BASIC	505,949	505,985	505,986
Weighted Average Common Shares Outstanding, Diluted	506,982	507,045	507,064
EARNINGS PER SHARE:
INCOME FROM CONTINUING OPERATIONS, BASIC	$ 2.78	$ 3.08	$ 3.15
NET INCOME, BASIC	$ 2.97	$ 3.09	$ 3.15
INCOME FROM CONTINUING OPERATIONS, DILUTED	$ 2.77	$ 3.07	$ 3.14
NET INCOME, DILUTED	$ 2.96	$ 3.08	$ 3.14
DIVIDENDS PAID PER SHARE OF COMMON STOCK	$ 1.37	$ 1.37	$ 1.33
PSEG [Member]
OPERATING EXPENSES
Income Tax (Expense) Benefit	(977)	(1,059)	(1,042)
INCOME FROM CONTINUING OPERATIONS	1,407	1,557	1,594
Income (Loss) from Discontinued Operations, including Gain (Loss) on Disposal, net of tax benefit	96	7	(2)
Net Income	1,503	1,564	1,592
Power [Member]
OPERATING REVENUES	6,143	6,558	6,772
OPERATING EXPENSES
Energy Costs	3,046	3,374	3,462
Operation and Maintenance	1,102	1,046	1,045
Depreciation and Amortization	224	175	184
Total Operating Expenses	4,372	4,595	4,691
OPERATING INCOME	1,771	1,963	2,081
Other Income	190	170	233
Other Deductions	(79)	(53)	(135)
Other-Than-Temporary Investments	(20)	(9)	(60)
Interest Expense	(175)	(157)	(161)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	1,687	1,914	1,958
Income Tax (Expense) Benefit	(685)	(778)	(767)
INCOME FROM CONTINUING OPERATIONS	1,002	1,136	1,191
Income (Loss) from Discontinued Operations, including Gain (Loss) on Disposal, net of tax benefit	96	7	(2)
Net Income	1,098	1,143	1,189
PSE&G [Member]
OPERATING REVENUES	7,326	7,869	8,243
OPERATING EXPENSES
Energy Costs	3,951	4,655	5,170
Operation and Maintenance	1,372	1,442	1,474
Depreciation and Amortization	719	750	608
Taxes Other Than Income Taxes	133	136	133
Total Operating Expenses	6,175	6,983	7,385
OPERATING INCOME	1,151	886	858
Other Income	25	26	8
Other Deductions	(4)	(3)	(3)
Other-Than-Temporary Investments	(1)	0	0
Interest Expense	(310)	(318)	(312)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	861	591	551
Income Tax (Expense) Benefit	(340)	(232)	(226)
Net Income	521	359	325
Preferred Stock Dividends	0	(1)	(4)
EARNINGS AVAILABLE TO PUBLIC SERVICE ENTERPRISE GROUP INCORPORATED	$ 521	$ 358	$ 321