Condensed Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net Income	$ 586	$ 386
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	14	2
Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit	(9)	2
Pension/OPEB adjustment, net of tax (expense) benefit	8	4
Other Comprehensive Income (Loss), net of tax	13	8
COMPREHENSIVE INCOME	599	394
PSE And G [Member]
Net Income	242	214
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	0	0
COMPREHENSIVE INCOME	242	214
Power [Member]
Net Income	335	164
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	14	2
Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit	(9)	1
Pension/OPEB adjustment, net of tax (expense) benefit	7	3
Other Comprehensive Income (Loss), net of tax	12	6
COMPREHENSIVE INCOME	$ 347	$ 170