Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	$ 33	$ 33	$ 35	$ 21
Unrealized Gains (Losses) on Cash Flow Hedges, tax	(1)	(1)	6	(3)
Pension/OPEB adjustment, tax	(5)	(2)	(17)	(5)
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	32	34	33	23
Unrealized Gains (Losses) on Cash Flow Hedges, tax	(1)	0	6	(2)
Pension/OPEB adjustment, tax	$ (5)	$ (1)	$ (15)	$ (4)