Condensed Consolidated Statements Of Operations (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating Revenues	$ 2,402	$ 2,620	$ 7,375	$ 8,443
Operating Expenses [Abstract]
Energy Costs	879	1,167	2,819	3,740
Operation and Maintenance	619	603	1,876	1,829
Depreciation and Amortization	286	263	797	739
Taxes Other Than Income Taxes	24	31	73	102
Total Operating Expenses	1,808	2,064	5,565	6,410
OPERATING INCOME	594	556	1,810	2,033
Income from Equity Method Investments	(7)	(1)	(9)	(8)
Other Income	121	45	216	176
Other Deductions	(26)	(11)	(61)	(39)
Other-Than-Temporary Impairments	(2)	(8)	(14)	(13)
Interest Expense	(106)	(117)	(310)	(361)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	588	466	1,650	1,804
Income Tax (Expense) Benefit	(241)	(201)	(599)	(757)
INCOME FROM CONTINUING OPERATIONS	347	265	1,051	1,047
Income (Loss) from Discontinued Operations, including Gain on Disposal, net of tax (expense) benefit of $(15) and $(51) for the three and nine months ended 2011	0	29	0	96
Net Income	347	294	1,051	1,143
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (THOUSANDS):
BASIC	505,914	505,909	505,942	505,959
DILUTED	507,111	506,999	507,037	506,963
EARNINGS PER SHARE:
INCOME FROM CONTINUING OPERATIONS, BASIC	$ 0.69	$ 0.52	$ 2.08	$ 2.07
NET INCOME	$ 0.69	$ 0.58	$ 2.08	$ 2.26
INCOME FROM CONTINUING OPERATIONS, DILUTED	$ 0.68	$ 0.52	$ 2.07	$ 2.06
NET INCOME	$ 0.68	$ 0.58	$ 2.07	$ 2.25
DIVIDENDS PAID PER SHARE OF COMMON STOCK	$ 0.3550	$ 0.3425	$ 1.0650	$ 1.0275
Power [Member]
Operating Revenues	1,038	1,398	3,584	4,650
Operating Expenses [Abstract]
Energy Costs	456	597	1,725	2,335
Operation and Maintenance	255	262	780	810
Depreciation and Amortization	60	56	175	166
Total Operating Expenses	771	915	2,680	3,311
OPERATING INCOME	267	483	904	1,339
Other Income	104	37	171	156
Other Deductions	(20)	(10)	(52)	(37)
Other-Than-Temporary Impairments	(2)	(8)	(14)	(10)
Interest Expense	(35)	(42)	(97)	(134)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	314	460	912	1,314
Income Tax (Expense) Benefit	(133)	(187)	(374)	(539)
INCOME FROM CONTINUING OPERATIONS	181	273	538	775
Income (Loss) from Discontinued Operations, including Gain on Disposal, net of tax (expense) benefit of $(15) and $(51) for the three and nine months ended 2011	0	29	0	96
Net Income	181	302	538	871
PSE And G [Member]
Operating Revenues	1,683	1,841	5,029	5,718
Operating Expenses [Abstract]
Energy Costs	756	943	2,380	3,124
Operation and Maintenance	366	342	1,092	1,014
Depreciation and Amortization	216	197	594	548
Taxes Other Than Income Taxes	24	31	73	102
Total Operating Expenses	1,362	1,513	4,139	4,788
OPERATING INCOME	321	328	890	930
Other Income	16	7	39	16
Other Deductions	(6)	(1)	(8)	(2)
Other-Than-Temporary Impairments	0	0	0	(1)
Interest Expense	(73)	(77)	(220)	(234)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	258	257	701	709
Income Tax (Expense) Benefit	(103)	(103)	(248)	(287)
Net Income	$ 155	$ 154	$ 453	$ 422