Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating Revenues	$ 2,616	$ 3,135
Operating Expenses [Abstract]
Energy Costs	836	1,094
Operation and Maintenance	729	663
Depreciation and Amortization	224	330
Total Operating Expenses	1,789	2,087
OPERATING INCOME	827	1,048
Income from Equity Method Investments	2	3
Other Income	48	48
Other Deductions	(21)	(12)
Other-Than-Temporary Impairments	(10)	(5)
Interest Expense	(92)	(98)
INCOME BEFORE INCOME TAXES	754	984
Income Tax Expense	(283)	(398)
Net Income	$ 471	$ 586
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (in shares)	505	506
DILUTED (in shares)	508	508
EARNINGS PER SHARE:
BASIC (in dollars per share)	$ 0.93	$ 1.16
DILUTED (in dollars per share)	0.93	1.15
DIVIDENDS PAID PER SHARE OF COMMON STOCK (in dollars per share)	$ 0.41	$ 0.39
PSE And G [Member]
Operating Revenues	$ 1,712	$ 2,002
Operating Expenses [Abstract]
Energy Costs	729	892
Operation and Maintenance	382	412
Depreciation and Amortization	139	247
Total Operating Expenses	1,250	1,551
OPERATING INCOME	462	451
Other Income	20	18
Other Deductions	(1)	(1)
Interest Expense	(68)	(69)
INCOME BEFORE INCOME TAXES	413	399
Income Tax Expense	(151)	(157)
Net Income	262	242
Power [Member]
Operating Revenues	1,313	1,725
Operating Expenses [Abstract]
Energy Costs	638	893
Operation and Maintenance	253	172
Depreciation and Amortization	79	76
Total Operating Expenses	970	1,141
OPERATING INCOME	343	584
Income from Equity Method Investments	2	3
Other Income	26	29
Other Deductions	(18)	(11)
Other-Than-Temporary Impairments	(10)	(5)
Interest Expense	(22)	(31)
INCOME BEFORE INCOME TAXES	321	569
Income Tax Expense	(129)	(234)
Net Income	$ 192	$ 335