Condensed Consolidated Statements Of Operations (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Revenues	$ 2,786	$ 2,875
Operating Expenses [Abstract]
Energy Costs	1,155	1,179
Operation and Maintenance	710	628
Depreciation and Amortization	290	256
Taxes Other Than Income Taxes	21	29
Total Operating Expenses	2,176	2,092
OPERATING INCOME	610	783
Income from Equity Method Investments	(2)	0
Other Income	61	44
Other Deductions	(29)	(16)
Other-Than-Temporary Impairments	(2)	(5)
Interest Expense	(102)	(101)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	540	705
Income Tax Benefit (Expense)	(220)	(212)
Net Income	320	493
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (THOUSANDS):
BASIC	505,942	506,010
DILUTED	507,220	507,029
EARNINGS PER SHARE:
INCOME FROM CONTINUING OPERATIONS, BASIC	$ 0.63	$ 0.97
NET INCOME	$ 0.63	$ 0.97
INCOME FROM CONTINUING OPERATIONS, DILUTED	$ 0.63	$ 0.97
NET INCOME	$ 0.63	$ 0.97
DIVIDENDS PAID PER SHARE OF COMMON STOCK	$ 0.3600	$ 0.3550
Power [Member]
Operating Revenues	1,447	1,561
Operating Expenses [Abstract]
Energy Costs	860	822
Operation and Maintenance	282	241
Depreciation and Amortization	64	57
Total Operating Expenses	1,206	1,120
OPERATING INCOME	241	441
Other Income	47	30
Other Deductions	(28)	(15)
Other-Than-Temporary Impairments	(2)	(5)
Interest Expense	(30)	(30)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	228	421
Income Tax Benefit (Expense)	(91)	(168)
Net Income	137	253
PSE And G [Member]
Operating Revenues	1,995	1,939
Operating Expenses [Abstract]
Energy Costs	967	1,002
Operation and Maintenance	427	376
Depreciation and Amortization	215	190
Taxes Other Than Income Taxes	21	29
Total Operating Expenses	1,630	1,597
OPERATING INCOME	365	342
Other Income	13	11
Other Deductions	(1)	(1)
Interest Expense	(73)	(73)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	304	279
Income Tax Benefit (Expense)	(125)	(82)
Net Income	$ 179	$ 197