Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net income (loss)	$ (70)	$ 98	$ 227	$ 208
Other comprehensive income (loss), net of tax:
Net loss arising during the period, net of income tax benefit	0	(4)	(2)	(3)
Amortization of net loss included in net income, net of income tax expense	5	3	7	9
Unrealized loss on derivatives qualified as cash flow hedges:
Unrealized holding loss arising during the period, net of income tax expense	0	(28)	0	(3)
Reclassification adjustments included in net income, net of income tax benefit	0	(9)	0	(20)
Other comprehensive income (loss), net of tax	5	(38)	5	(17)
Comprehensive income (loss)	(65)	60	232	191
Less: Comprehensive income attributable to noncontrolling interests	24	24	51	41
Comprehensive income (loss) attributable to Edison International	(89)	36	181	150
Southern California Edison
Net income (loss)	(67)	214	216	414
Other comprehensive income (loss), net of tax:
Net loss arising during the period, net of income tax benefit	0	(4)	(4)	(4)
Amortization of net loss included in net income, net of income tax expense	2	1	3	4
Unrealized loss on derivatives qualified as cash flow hedges:
Other comprehensive income (loss), net of tax	2	(3)	(1)	0
Comprehensive income (loss)	$ (65)	$ 211	$ 215	$ 414