Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 925	$ 871	$ 1,405
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	2,288	2,029	1,803
Allowance for equity during construction	(118)	(121)	(101)
Impairment and other expense (income)	71	(116)	184
Gain on sale of lease interest and other operating income	(2)	(133)	(5)
Deferred income taxes	43	(296)	(284)
Wildfire Insurance Fund amortization expense	215	336	152
Other	40	36	34
Nuclear decommissioning trusts	(256)	(197)	(106)
Proceeds from Morongo Transmission LLC	400
Contributions to Wildfire Insurance Fund	(95)	(95)	(2,457)
Changes in operating assets and liabilities:
Receivables	(514)	(283)	(76)
Inventory	(21)	(43)	(83)
Accounts payable	138	87	288
Tax receivables and payables	13	113	88
Other current assets and liabilities	(333)	4	(13)
Regulatory assets and liabilities, net	(720)	(1,799)	(1,278)
Wildfire-related insurance receivable	708	932	285
Wildfire-related claims	(2,648)	(56)	(101)
Other noncurrent assets and liabilities	(123)	(6)	(42)
Net cash provided by (used in) operating activities	11	1,263	(307)
Cash flows from financing activities:
Long-term debt issued or remarketed, plus premium and net of discount and issuance costs	5,412	3,073	3,696
Long-term debt repaid or repurchased	(1,037)	(1,099)	(82)
Short-term debt issued	2,654	2,994	1,750
Short-term debt repaid	(2,255)	(1,126)	(1,750)
Common stock issued	32	912	2,391
Preferred stock issued, net	1,977
Preferred and preference stock redeemed		(308)
Commercial paper (repayments) borrowing, net	(254)	304	(172)
Dividends and distribution to noncontrolling interests	(106)	(118)	(121)
Common stock dividends paid	(988)	(928)	(810)
Preferred stock dividends paid	(35)
Other	45	23	1
Net cash provided by financing activities	5,445	3,727	4,903
Cash flows from investing activities:
Capital expenditures	(5,505)	(5,484)	(4,877)
Proceeds from sale of nuclear decommissioning trust investments	3,961	5,927	4,389
Purchases of nuclear decommissioning trust investments	(3,705)	(5,730)	(4,283)
Other	98	316	93
Net cash used in investing activities	(5,151)	(4,971)	(4,678)
Net increase (decrease) in cash, cash equivalents and restricted cash	305	19	(82)
Cash, cash equivalents and restricted cash at beginning of year	89	70	152
Cash, cash equivalents and restricted cash at end of year	394	89	70
SCE
Cash flows from operating activities:
Net income	935	942	1,530
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	2,280	2,021	1,798
Allowance for equity during construction	(118)	(121)	(101)
Impairment and other expense (income)	69	(150)	159
Deferred income taxes	62	(263)	(243)
Wildfire Insurance Fund amortization expense	215	336	152
Other	26	17	17
Nuclear decommissioning trusts	(256)	(197)	(106)
Proceeds from Morongo Transmission LLC	400
Contributions to Wildfire Insurance Fund	(95)	(95)	(2,457)
Changes in operating assets and liabilities:
Receivables	(513)	(290)	(89)
Inventory	(21)	(43)	(83)
Accounts payable	131	63	307
Tax receivables and payables	31	141	178
Other current assets and liabilities	(333)	(7)	(15)
Regulatory assets and liabilities, net	(720)	(1,799)	(1,278)
Wildfire-related insurance receivable	708	932	285
Wildfire-related claims	(2,648)	(56)	(101)
Other noncurrent assets and liabilities	5	(4)	(44)
Net cash provided by (used in) operating activities	158	1,427	(91)
Cash flows from financing activities:
Long-term debt issued or remarketed, plus premium and net of discount and issuance costs	5,411	2,676	2,306
Long-term debt repaid or repurchased	(1,037)	(699)	(82)
Short-term debt issued	2,654	2,194	750
Short-term debt repaid	(2,255)	(326)	(750)
Capital contributions from Edison International Parent	1,633	1,432	3,250
Preferred and preference stock redeemed		(308)
Commercial paper (repayments) borrowing, net	(124)	175	(171)
Common stock dividends paid	(1,081)	(1,450)	(521)
Other	17	5	(11)
Net cash provided by financing activities	5,218	3,699	4,771
Cash flows from investing activities:
Capital expenditures	(5,503)	(5,480)	(4,876)
Proceeds from sale of nuclear decommissioning trust investments	3,961	5,927	4,389
Purchases of nuclear decommissioning trust investments	(3,705)	(5,730)	(4,283)
Other	95	189	92
Net cash used in investing activities	(5,152)	(5,094)	(4,678)
Net increase (decrease) in cash, cash equivalents and restricted cash	224	32	2
Cash, cash equivalents and restricted cash at beginning of year	56	24	22
Cash, cash equivalents and restricted cash at end of year	$ 280	$ 56	$ 24