Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income	$ 298	$ 112
Less: Income (loss) from discontinued operations, net of tax	12	(84)
Income from continuing operations	286	196
Adjustments to reconcile to net cash provided by operating activities:
Depreciation, decommissioning and amortization	414	388
Regulatory impacts of net nuclear decommissioning trust earnings	25	77
Other amortization and other	17	19
Stock-based compensation	6	8
Deferred income taxes and investment tax credits	174	30
Proceeds from U.S. treasury grants	0	29
Changes in operating assets and liabilities:
Receivables	(38)	88
Inventory	(11)	10
Margin and collateral deposits, net of collateral received	(2)	(1)
Prepaid taxes	(5)	11
Other current assets	82	17
Accounts payable	(65)	(47)
Accrued taxes	60	170
Other current liabilities	(255)	(302)
Derivative assets and liabilities, net	79	273
Regulatory assets and liabilities, net	(199)	(254)
Other assets	(13)	(9)
Other liabilities	(49)	72
Operating cash flows from continuing operations	506	775
Operating cash flows from discontinued operations, net	0	(98)
Net cash provided by operating activities	506	677
Cash flows from financing activities:
Long-term debt issued	398	395
Long-term debt issuance costs	(4)	(4)
Long-term debt repaid	(1)	(2)
Preference stock issued, net	387	345
Preference stock redeemed	(400)	0
Short-term debt financing, net	245	(86)
Settlements of stock-based compensation, net	(32)	(22)
Dividends to noncontrolling interests	(30)	(14)
Dividends paid	(110)	(106)
Financing cash flows from continuing operations	453	506
Financing cash flows from discontinued operations, net	0	279
Net cash provided by financing activities	453	785
Cash flows from investing activities:
Capital expenditures	(979)	(1,189)
Proceeds from sale of nuclear decommissioning trust investments	435	602
Purchases of nuclear decommissioning trust investments and other	(466)	(684)
Other investments and customer advances for construction	(4)	(3)
Investing cash flows from continuing operations	(1,014)	(1,274)
Investing cash flows from discontinued operations, net	0	(174)
Net cash used by investing activities	(1,014)	(1,448)
Net (decrease) increase in cash and cash equivalents	(55)	14
Cash and cash equivalents at beginning of period	170	1,469
Cash and cash equivalents at end of period	115	1,483
Cash and cash equivalents from discontinued operations	0	1,300
Cash and cash equivalents from continuing operations	115	183
Southern California Edison
Cash flows from operating activities:
Net income	283	201
Adjustments to reconcile to net cash provided by operating activities:
Depreciation, decommissioning and amortization	414	389
Regulatory impacts of net nuclear decommissioning trust earnings	25	77
Other amortization	18	20
Stock-based compensation	4	4
Deferred income taxes and investment tax credits	150	156
Proceeds from U.S. treasury grants	0	29
Changes in operating assets and liabilities:
Receivables	1	90
Inventory	(11)	11
Margin and collateral deposits, net of collateral received	(2)	(1)
Prepaid taxes	18	(1)
Other current assets	79	19
Accounts payable	(63)	(53)
Accrued taxes	59	62
Other current liabilities	(247)	(185)
Derivative assets and liabilities, net	79	336
Regulatory assets and liabilities, net	(199)	(317)
Other assets	(15)	(10)
Other liabilities	(32)	(52)
Net cash provided by operating activities	561	775
Cash flows from financing activities:
Long-term debt issued	398	395
Long-term debt issuance costs	(4)	(4)
Long-term debt repaid	(1)	(1)
Preference stock issued, net	387	345
Preference stock redeemed	(400)	0
Short-term debt financing, net	229	(89)
Settlements of stock-based compensation, net	(29)	(15)
Dividends paid	(150)	(131)
Net cash provided by financing activities	430	500
Cash flows from investing activities:
Capital expenditures	(979)	(1,189)
Proceeds from sale of nuclear decommissioning trust investments	435	602
Purchases of nuclear decommissioning trust investments and other	(466)	(684)
Other investments and customer advances for construction	1	2
Net cash used by investing activities	(1,009)	(1,269)
Net (decrease) increase in cash and cash equivalents	(18)	6
Cash and cash equivalents at beginning of period	45	57
Cash and cash equivalents at end of period	$ 27	$ 63