Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	$ 15	$ (9)	$ 2	$ (12)
Unrealized Gains (Losses) on Cash Flow Hedges, tax	0	0	7	(2)
Pension/OPEB adjustment, tax	(6)	(1)	(12)	(3)
PSE And G [Member]
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	0	0	0	0
Power [Member]
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	14	(9)	1	(11)
Unrealized Gains (Losses) on Cash Flow Hedges, tax	0	(1)	7	(2)
Pension/OPEB adjustment, tax	$ (5)	$ (1)	$ (10)	$ (3)