Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating Revenues	$ 2,133	$ 1,905	$ 4,725	$ 4,521
Operating Expenses [Abstract]
Energy Costs	588	624	1,462	1,460
Operation and Maintenance	708	710	1,420	1,439
Depreciation and Amortization	641	224	1,469	448
Total Operating Expenses	1,937	1,558	4,351	3,347
OPERATING INCOME (LOSS)	196	347	374	1,174
Income from Equity Method Investments	5	4	8	6
Other Income	70	44	142	92
Other Deductions	(9)	(10)	(20)	(31)
Other-Than-Temporary Impairments	(3)	(10)	(4)	(20)
Interest Expense	(91)	(97)	(189)	(189)
INCOME (LOSS) BEFORE INCOME TAXES	168	278	311	1,032
Income Tax Benefit (Expense)	(59)	(91)	(88)	(374)
Net Income (Loss)	$ 109	$ 187	$ 223	$ 658
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (shares)	505	505	505	505
DILUTED (shares)	507	508	507	508
EARNINGS PER SHARE:
BASIC (dollars per share)	$ 0.22	$ 0.37	$ 0.44	$ 1.30
DILUTED (dollars per share)	0.22	0.37	0.44	1.30
DIVIDENDS PAID PER SHARE OF COMMON STOCK (in dollars per share)	$ 0.43	$ 0.41	$ 0.86	$ 0.82
PSE And G [Member]
Operating Revenues	$ 1,368	$ 1,350	$ 3,180	$ 3,062
Operating Expenses [Abstract]
Energy Costs	472	529	1,225	1,258
Operation and Maintenance	351	352	718	734
Depreciation and Amortization	166	136	337	275
Total Operating Expenses	989	1,017	2,280	2,267
OPERATING INCOME (LOSS)	379	333	900	795
Other Income	22	19	47	39
Other Deductions	(1)	(1)	(2)	(2)
Interest Expense	(69)	(74)	(144)	(142)
INCOME (LOSS) BEFORE INCOME TAXES	331	277	801	690
Income Tax Benefit (Expense)	(123)	(98)	(294)	(249)
Net Income (Loss)	208	179	507	441
Power [Member]
Operating Revenues	929	714	2,213	2,027
Operating Expenses [Abstract]
Energy Costs	397	381	1,104	1,019
Operation and Maintenance	254	265	484	518
Depreciation and Amortization	465	80	1,115	159
Total Operating Expenses	1,116	726	2,703	1,696
OPERATING INCOME (LOSS)	(187)	(12)	(490)	331
Income from Equity Method Investments	5	4	8	6
Other Income	46	25	84	51
Other Deductions	(7)	(9)	(14)	(27)
Other-Than-Temporary Impairments	(3)	(10)	(4)	(20)
Interest Expense	(13)	(20)	(29)	(42)
INCOME (LOSS) BEFORE INCOME TAXES	(159)	(22)	(445)	299
Income Tax Benefit (Expense)	62	11	178	(118)
Net Income (Loss)	$ (97)	$ (11)	$ (267)	$ 181