Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
CURRENT ASSETS
Cash and Cash Equivalents	$ 379	$ 834
Accounts Receivable, net of allowances in 2012 and 2011, respectively	1,069	967
Tax Receivable	227	16
Unbilled Revenues	314	289
Fuel	583	685
Materials and Supplies, net	422	367
Prepayments	283	308
Derivative Contracts	138	156
Deferred Income Taxes	49	0
Regulatory Assets	349	167
Other	56	122
Total Current Assets	3,869	3,911
PROPERTY, PLANT AND EQUIPMENT	27,402	25,080
Less: Accumulated Depreciation and Amortization	(7,666)	(7,231)
Net Property, Plant and Equipment	19,736	17,849
NONCURRENT ASSETS
Regulatory Assets	3,830	3,805
Regulatory Assets of Variable Interest Entities (VIEs)	713	925
Long-Term Investments	1,324	1,303
Nuclear Decommissioning Trust (NDT) Fund	1,540	1,349
Other Special Funds	191	172
Goodwill	16	16
Other Intangibles	34	131
Derivative Contracts	153	106
Restricted Cash of VIEs	23	22
Other	296	232
Total Noncurrent Assets	8,120	8,061
Total Assets	31,725	29,821
CURRENT LIABILITIES
Long-Term Debt Due Within One Year	1,026	417
Securitization Debt of VIEs Due Within One Year	226	216
Commercial Paper and Loans	263	0
Accounts Payable	1,304	1,184
Derivative Contracts	46	131
Accrued Interest	91	97
Accrued Taxes	17	30
Deferred Income Taxes	72	170
Clean Energy Program	153	214
Obligation to Return Cash Collateral	122	107
Regulatory Liabilities	67	100
Other	390	291
Total Current Liabilities	3,777	2,957
NONCURRENT LIABILITIES
Deferred Income Taxes and Investment Tax Credits (ITC)	6,542	5,458
Regulatory Liabilities	209	228
Regulatory Liabilities of VIEs	10	9
Asset Retirement Obligations	627	489
Other Postretirement Benefit (OPEB) Costs	1,285	1,127
Accrued Pension Costs	876	734
Clean Energy Program	0	39
Environmental Costs	537	643
Derivative Contracts	122	26
Long-Term Accrued Taxes	164	292
Other	108	86
Total Noncurrent Liabilities	10,480	9,131
LONG-TERM DEBT
Long-Term Debt	6,148	6,694
Securitization Debt of VIEs	496	723
Project Level, Non-Recourse Debt	43	44
Total Long-Term Debt	6,687	7,461
STOCKHOLDER'S EQUITY
Common Stock	4,833	4,823
Treasury Stock, at cost, 2012-27,664,188 shares; 2011-27,611,374 shares	(607)	(601)
Retained Earnings	6,942	6,385
Accumulated Other Comprehensive Income	(388)	(337)
Total Common Stockholders' Equity	10,780	10,270
Noncontrolling Interest	1	2
Total Stockholder's Equity	10,781	10,272
Total Capitalization	17,468	17,733
TOTAL LIABILITIES AND CAPITALIZATION	31,725	29,821
Power [Member]
CURRENT ASSETS
Cash and Cash Equivalents	7	12
Accounts Receivable, net of allowances in 2012 and 2011, respectively	269	267
Accounts Receivable-Affiliated Companies, net	340	381
Short-Term Loan to Affiliate	574	907
Fuel	583	685
Materials and Supplies, net	307	272
Prepayments	17	24
Derivative Contracts	118	139
Other	19	0
Total Current Assets	2,234	2,687
PROPERTY, PLANT AND EQUIPMENT	9,697	9,191
Less: Accumulated Depreciation and Amortization	(2,679)	(2,460)
Net Property, Plant and Equipment	7,018	6,731
NONCURRENT ASSETS
Nuclear Decommissioning Trust (NDT) Fund	1,540	1,349
Other Special Funds	36	33
Goodwill	16	16
Other Intangibles	34	131
Derivative Contracts	49	55
Other	105	85
Total Noncurrent Assets	1,780	1,669
Total Assets	11,032	11,087
CURRENT LIABILITIES
Long-Term Debt Due Within One Year	300	66
Accounts Payable	498	541
Derivative Contracts	46	124
Accrued Interest	26	32
Deferred Income Taxes	16	53
Other	81	86
Total Current Liabilities	967	902
NONCURRENT LIABILITIES
Deferred Income Taxes and Investment Tax Credits (ITC)	1,575	1,266
Asset Retirement Obligations	369	259
Other Postretirement Benefit (OPEB) Costs	221	180
Accrued Pension Costs	272	236
Derivative Contracts	15	24
Long-Term Accrued Taxes	50	8
Other	84	83
Total Noncurrent Liabilities	2,586	2,056
LONG-TERM DEBT
Total Long-Term Debt	2,040	2,685
STOCKHOLDER'S EQUITY
Contributed Capital	2,028	2,028
Basis Adjustment	(986)	(986)
Retained Earnings	4,725	4,678
Accumulated Other Comprehensive Income	(328)	(276)
Total Stockholder's Equity	5,439	5,444
TOTAL LIABILITIES AND CAPITALIZATION	11,032	11,087
PSE&G [Member]
CURRENT ASSETS
Cash and Cash Equivalents	116	143
Accounts Receivable, net of allowances in 2012 and 2011, respectively	783	691
Tax Receivable	0	16
Unbilled Revenues	314	289
Materials and Supplies, net	114	94
Prepayments	29	117
Derivative Contracts	5	0
Deferred Income Taxes	49	0
Regulatory Assets	349	167
Other	24	21
Total Current Assets	1,783	1,538
PROPERTY, PLANT AND EQUIPMENT	17,006	15,306
Less: Accumulated Depreciation and Amortization	(4,726)	(4,539)
Net Property, Plant and Equipment	12,280	10,767
NONCURRENT ASSETS
Regulatory Assets	3,830	3,805
Regulatory Assets of Variable Interest Entities (VIEs)	713	925
Long-Term Investments	348	280
Other Special Funds	61	57
Derivative Contracts	62	4
Restricted Cash of VIEs	23	22
Other	123	89
Total Noncurrent Assets	5,160	5,182
Total Assets	19,223	17,487
CURRENT LIABILITIES
Long-Term Debt Due Within One Year	725	300
Securitization Debt of VIEs Due Within One Year	226	216
Commercial Paper and Loans	263	0
Accounts Payable	630	498
Derivative Contracts	0	7
Accounts Payable-Affiliated Companies, net	73	280
Accrued Interest	65	65
Deferred Income Taxes	60	32
Clean Energy Program	153	214
Obligation to Return Cash Collateral	122	107
Regulatory Liabilities	67	100
Other	269	186
Total Current Liabilities	2,653	2,005
NONCURRENT LIABILITIES
Deferred Income Taxes and Investment Tax Credits (ITC)	4,223	3,675
Regulatory Liabilities	209	228
Regulatory Liabilities of VIEs	10	9
Asset Retirement Obligations	250	226
Other Postretirement Benefit (OPEB) Costs	1,011	900
Accrued Pension Costs	463	355
Clean Energy Program	0	39
Environmental Costs	486	592
Derivative Contracts	107	0
Long-Term Accrued Taxes	32	83
Other	38	35
Total Noncurrent Liabilities	6,829	6,142
LONG-TERM DEBT
Long-Term Debt	4,070	3,970
Securitization Debt of VIEs	496	723
Total Long-Term Debt	4,566	4,693
STOCKHOLDER'S EQUITY
Common Stock	892	892
Contributed Capital	420	420
Basis Adjustment	986	986
Retained Earnings	2,875	2,347
Accumulated Other Comprehensive Income	2	2
Total Stockholder's Equity	5,175	4,647
Total Capitalization	9,741	9,340
TOTAL LIABILITIES AND CAPITALIZATION	$ 19,223	$ 17,487