Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income (loss)	$ 227	$ 208
Less: Income (loss) from discontinued operations, net of tax	24	(193)
Income from continuing operations	203	401
Adjustments to reconcile to net cash provided by operating activities:
Depreciation, decommissioning and amortization	832	788
Regulatory impacts of net nuclear decommissioning trust earnings	161	114
Other amortization and other	33	34
Asset impairment	575	0
Stock-based compensation	12	16
Deferred income taxes and investment tax credits	85	11
Proceeds from U.S. treasury grants	0	29
Changes in operating assets and liabilities:
Receivables	(47)	10
Inventory	73	15
Margin and collateral deposits, net of collateral received	(67)	(3)
Prepaid taxes	(5)	98
Other current assets	(190)	(204)
Accounts payable	88	27
Accrued taxes	(33)	(15)
Other current liabilities	(98)	(83)
Derivative assets and liabilities, net	152	(79)
Regulatory assets and liabilities, net	(11)	252
Other assets	(27)	(19)
Other liabilities	(475)	122
Operating cash flows from continuing operations	1,261	1,514
Operating cash flows from discontinued operations, net	0	(354)
Net cash provided by operating activities	1,261	1,160
Cash flows from financing activities:
Long-term debt issued	398	395
Long-term debt issuance costs	(4)	(4)
Long-term debt repaid	(3)	(3)
Bonds remarketed, net	195	0
Bonds purchased	(196)	0
Preference stock issued, net	387	805
Preference stock redeemed	(400)	(75)
Short-term debt financing, net	678	(121)
Settlements of stock-based compensation, net	(37)	(30)
Dividends to noncontrolling interests	(52)	(29)
Dividends paid	(220)	(212)
Financing cash flows from continuing operations	746	726
Financing cash flows from discontinued operations, net	0	300
Net cash provided by financing activities	746	1,026
Cash flows from investing activities:
Capital expenditures	(1,834)	(2,125)
Proceeds from sale of nuclear decommissioning trust investments	1,956	1,097
Purchases of nuclear decommissioning trust investments and other	(2,128)	(1,222)
Customer advances for construction and other investments	(23)	7
Investing cash flows from continuing operations	(2,029)	(2,243)
Investing cash flows from discontinued operations, net	0	(237)
Net cash used by investing activities	(2,029)	(2,480)
Net (decrease) increase in cash and cash equivalents	(22)	(294)
Cash and cash equivalents at beginning of period	170	1,469
Cash and cash equivalents at end of period	148	1,175
Cash and cash equivalents from discontinued operations	0	1,009
Cash and cash equivalents from continuing operations	148	166
Southern California Edison
Cash flows from operating activities:
Net income (loss)	216	414
Adjustments to reconcile to net cash provided by operating activities:
Depreciation, decommissioning and amortization	832	788
Regulatory impacts of net nuclear decommissioning trust earnings	161	114
Other amortization	35	37
Asset impairment	575	0
Stock-based compensation	7	8
Deferred income taxes and investment tax credits	50	250
Proceeds from U.S. treasury grants	0	29
Changes in operating assets and liabilities:
Receivables	(12)	11
Inventory	73	15
Margin and collateral deposits, net of collateral received	(67)	(3)
Prepaid taxes	26	3
Other current assets	(192)	(203)
Accounts payable	96	28
Accrued taxes	(36)	(14)
Other current liabilities	(102)	(79)
Derivative assets and liabilities, net	152	(72)
Regulatory assets and liabilities, net	(11)	245
Other assets	(12)	(21)
Other liabilities	(466)	(39)
Net cash provided by operating activities	1,325	1,511
Cash flows from financing activities:
Long-term debt issued	398	395
Long-term debt issuance costs	(4)	(4)
Long-term debt repaid	(3)	(3)
Bonds remarketed, net	195	0
Bonds purchased	(196)	0
Preference stock issued, net	387	805
Preference stock redeemed	(400)	(75)
Short-term debt financing, net	653	(125)
Settlements of stock-based compensation, net	(34)	(20)
Dividends paid	(292)	(261)
Net cash provided by financing activities	704	712
Cash flows from investing activities:
Capital expenditures	(1,834)	(2,125)
Proceeds from sale of nuclear decommissioning trust investments	1,956	1,097
Purchases of nuclear decommissioning trust investments and other	(2,128)	(1,222)
Customer advances for construction and other investments	(19)	11
Net cash used by investing activities	(2,025)	(2,239)
Net (decrease) increase in cash and cash equivalents	4	(16)
Cash and cash equivalents at beginning of period	45	57
Cash and cash equivalents at end of period	$ 49	$ 41