Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net Income	$ 187	$ 345	$ 658	$ 931
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	10	(15)	26	(1)
Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit	(1)	0	1	(9)
Pension/Other Postretirement Benefit (OPEB) adjustment, net of tax (expense) benefit	8	8	16	16
Other Comprehensive Income (Loss), net of tax	17	(7)	43	6
COMPREHENSIVE INCOME	204	338	701	937
PSE And G [Member]
Net Income	179	167	441	409
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	1	(1)	1	(1)
COMPREHENSIVE INCOME	180	166	442	408
Power [Member]
Net Income	(11)	166	181	501
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	9	(14)	25	0
Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit	0	0	0	(9)
Pension/Other Postretirement Benefit (OPEB) adjustment, net of tax (expense) benefit	7	7	14	14
Other Comprehensive Income (Loss), net of tax	16	(7)	39	5
COMPREHENSIVE INCOME	$ 5	$ 159	$ 220	$ 506