Condensed Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net Income	$ 386	$ 320
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	2	27
Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit	2	(4)
Pension/OPEB adjustment, net of tax (expense) benefit	4	10
Other Comprehensive Income (Loss), net of tax	8	33
COMPREHENSIVE INCOME	394	353
Power [Member]
Net Income	164	141
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	2	27
Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit	1	(4)
Pension/OPEB adjustment, net of tax (expense) benefit	3	9
Other Comprehensive Income (Loss), net of tax	6	32
COMPREHENSIVE INCOME	170	173
PSE And G [Member]
Net Income	214	179
Other Comprehensive Income (Loss), net of tax
COMPREHENSIVE INCOME	$ 214	$ 179