Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Operating Revenues	$ 1,905	$ 2,314	$ 4,521	$ 5,449
Operating Expenses [Abstract]
Energy Costs	624	668	1,460	1,762
Operation and Maintenance	710	761	1,439	1,424
Depreciation and Amortization	224	317	448	647
Total Operating Expenses	1,558	1,746	3,347	3,833
OPERATING INCOME	347	568	1,174	1,616
Income from Equity Method Investments	4	4	6	7
Other Income	44	76	92	124
Other Deductions	(10)	(10)	(31)	(22)
Other-Than-Temporary Impairments	(10)	(10)	(20)	(15)
Interest Expense	(97)	(97)	(189)	(195)
INCOME BEFORE INCOME TAXES	278	531	1,032	1,515
Income Tax Expense	(91)	(186)	(374)	(584)
Net Income	$ 187	$ 345	$ 658	$ 931
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (in shares)	505	506	505	506
DILUTED (in shares)	508	508	508	508
EARNINGS PER SHARE:
BASIC (in dollars per share)	$ 0.37	$ 0.68	$ 1.30	$ 1.84
DILUTED (in dollars per share)	0.37	0.68	1.30	1.83
DIVIDENDS PAID PER SHARE OF COMMON STOCK (in dollars per share)	$ 0.41	$ 0.39	$ 0.82	$ 0.78
PSE And G [Member]
Operating Revenues	$ 1,350	$ 1,466	$ 3,062	$ 3,468
Operating Expenses [Abstract]
Energy Costs	529	544	1,258	1,436
Operation and Maintenance	352	368	734	780
Depreciation and Amortization	136	234	275	481
Total Operating Expenses	1,017	1,146	2,267	2,697
OPERATING INCOME	333	320	795	771
Other Income	19	19	39	37
Other Deductions	(1)	(1)	(2)	(2)
Interest Expense	(74)	(67)	(142)	(136)
INCOME BEFORE INCOME TAXES	277	271	690	670
Income Tax Expense	(98)	(104)	(249)	(261)
Net Income	179	167	441	409
Power [Member]
Operating Revenues	714	1,025	2,027	2,750
Operating Expenses [Abstract]
Energy Costs	381	409	1,019	1,302
Operation and Maintenance	265	313	518	485
Depreciation and Amortization	80	75	159	151
Total Operating Expenses	726	797	1,696	1,938
OPERATING INCOME	(12)	228	331	812
Income from Equity Method Investments	4	5	6	8
Other Income	25	55	51	84
Other Deductions	(9)	(7)	(27)	(18)
Other-Than-Temporary Impairments	(10)	(10)	(20)	(15)
Interest Expense	(20)	(33)	(42)	(64)
INCOME BEFORE INCOME TAXES	(22)	238	299	807
Income Tax Expense	11	(72)	(118)	(306)
Net Income	$ (11)	$ 166	$ 181	$ 501