Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income (loss)	$ 871	$ 1,405	$ (316)
Less: Income from discontinued operations	0	0	34
Income (loss) from continuing operations	871	1,405	(350)
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	2,029	1,803	1,940
Allowance for equity during construction	(121)	(101)	(104)
Impairment and other (income) expense	(116)	184	78
Gain on sale of lease interest and other operating income	(133)	(5)	(7)
Deferred income taxes	(296)	(284)	(527)
Wildfire Insurance Fund amortization expense	336	152	0
Other	36	34	42
Nuclear decommissioning trusts	(197)	(106)	(109)
Contributions to Wildfire Insurance Fund	(95)	(2,457)	0
Changes in operating assets and liabilities:
Receivables	(283)	(76)	(39)
Inventory	(43)	(83)	(49)
Accounts payable	87	288	(31)
Tax receivables and payables	113	88	32
Other current assets and liabilities	4	(13)	(79)
Regulatory assets and liabilities, net	(1,799)	(1,278)	(92)
Wildfire-related insurance receivable	932	285	(2,000)
Wildfire-related claims	(56)	(101)	4,669
Other noncurrent assets and liabilities	(6)	(42)	(197)
Net cash provided by operating activities	1,263	(307)	3,177
Cash flows from financing activities:
Long-term debt issued, net of discount and issuance costs	3,073	3,696	3,237
Long-term debt repaid or repurchased	(1,099)	(82)	(654)
Short-term debt borrowed	2,994	1,750	0
Short-term debt repaid	(1,126)	(1,750)	0
Common stock issued	912	2,391	0
Preferred and preference stock redeemed	(308)	0	0
Commercial paper and other short-term borrowing (repayments), net	304	(172)	(1,611)
Dividends and distribution to noncontrolling interests	(118)	(121)	(121)
Dividends paid	(928)	(810)	(788)
Other	23	1	19
Net cash provided by financing activities	3,727	4,903	82
Cash flows from investing activities:
Capital expenditures	(5,484)	(4,877)	(4,509)
Proceeds from sale of nuclear decommissioning trust investments	5,927	4,389	4,340
Purchases of nuclear decommissioning trust investments	(5,730)	(4,283)	(4,231)
Proceeds from sale of San Onofre nuclear fuel	158	11	3
Proceeds from sale of lease investment	132	0	0
Other	26	82	158
Net cash used in investing activities	(4,971)	(4,678)	(4,239)
Net increase (decrease) in cash, cash equivalents and restricted cash	19	(82)	(980)
Cash, cash equivalents and restricted cash at beginning of year	70	152	1,132
Cash, cash equivalents and restricted cash at end of year	89	70	152
SCE
Cash flows from operating activities:
Net income (loss)	942	1,530	(189)
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	2,021	1,798	1,931
Allowance for equity during construction	(121)	(101)	(104)
Impairment and other (income) expense	(150)	159	(12)
Deferred income taxes	(263)	(243)	(552)
Wildfire Insurance Fund amortization expense	336	152	0
Other	17	17	28
Nuclear decommissioning trusts	(197)	(106)	(109)
Contributions to Wildfire Insurance Fund	(95)	(2,457)	0
Changes in operating assets and liabilities:
Receivables	(290)	(89)	(45)
Inventory	(43)	(83)	(50)
Accounts payable	63	307	(43)
Tax receivables and payables	141	178	(84)
Other current assets and liabilities	(7)	(15)	(91)
Regulatory assets and liabilities, net	(1,799)	(1,278)	(92)
Wildfire-related insurance receivable	932	285	(2,000)
Wildfire-related claims	(56)	(101)	4,669
Other noncurrent assets and liabilities	(4)	(44)	(66)
Net cash provided by operating activities	1,427	(91)	3,191
Cash flows from financing activities:
Long-term debt issued, net of discount and issuance costs	2,676	2,306	2,692
Long-term debt repaid or repurchased	(699)	(82)	(639)
Short-term debt borrowed	2,194	750	0
Short-term debt repaid	(326)	(750)	0
Capital contributions from Edison International Parent	1,432	3,250	0
Preferred and preference stock redeemed	(308)	0	0
Commercial paper and other short-term borrowing (repayments), net	175	(171)	(520)
Dividends paid	(1,450)	(521)	(909)
Other	5	(11)	(8)
Net cash provided by financing activities	3,699	4,771	616
Cash flows from investing activities:
Capital expenditures	(5,480)	(4,876)	(4,491)
Proceeds from sale of nuclear decommissioning trust investments	5,927	4,389	4,340
Purchases of nuclear decommissioning trust investments	(5,730)	(4,283)	(4,231)
Proceeds from sale of San Onofre nuclear fuel	158	11	3
Other	31	81	79
Net cash used in investing activities	(5,094)	(4,678)	(4,300)
Net increase (decrease) in cash, cash equivalents and restricted cash	32	2	(493)
Cash, cash equivalents and restricted cash at beginning of year	24	22	515
Cash, cash equivalents and restricted cash at end of year	$ 56	$ 24	$ 22