Edison International (EIX) 10-K23 Feb 232022 FY Annual reportFinancial data

Company Profile

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
Cover Page - USD ($) $ in Billions	Dec. 31, 2022	Feb. 16, 2023	Jun. 30, 2022
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2022
Entity File Number	1-9936
Entity Registrant Name	EDISON INTERNATIONAL
Entity Incorporation, State or Country Code	CA
Entity Tax Identification Number	95-4137452
Entity Address, Address Line One	2244 Walnut Grove Avenue
Entity Address, Address Line Two	(P.O. Box 976)
Entity Address, City or Town	Rosemead,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	91770
City Area Code	(626)
Local Phone Number	302-2222
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	EIX
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 24
Entity Common Stock, Shares Outstanding		382,566,466
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	238
Auditor Location	Los Angeles, California
Entity Central Index Key	0000827052
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false
SCE
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2022
Entity File Number	1-2313
Entity Registrant Name	SOUTHERN CALIFORNIA EDISON COMPANY
Entity Incorporation, State or Country Code	CA
Entity Tax Identification Number	95-1240335
Entity Address, Address Line One	2244 Walnut Grove Avenue
Entity Address, Address Line Two	(P.O. Box 800)
Entity Address, City or Town	Rosemead,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	91770
City Area Code	(626)
Local Phone Number	302-1212
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 0
Entity Common Stock, Shares Outstanding		434,888,104
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	238
Auditor Location	Los Angeles, California
Entity Central Index Key	0000092103
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Total operating revenue	$ 17,220	$ 14,905	$ 13,578
Purchased power and fuel	6,375	5,540	4,932
Operation and maintenance	4,724	3,645	3,609
Wildfire-related claims, net of insurance recoveries	1,313	1,276	1,328
Wildfire Insurance Fund expense	214	215	336
Depreciation and amortization	2,561	2,218	1,967
Property and other taxes	501	465	438
Impairment, net of other (income)	54	71	(116)
Gain on sale of lease interest and other operating income	(5)	(2)	(133)
Total operating expenses	15,737	13,428	12,361
Operating income	1,483	1,477	1,217
Interest expense	(1,169)	(925)	(902)
Other income	348	237	251
Income before income taxes	662	789	566
Income tax benefit	(162)	(136)	(305)
Net income	824	925	871
Less: Preferred and preference stock dividend requirements	105	60
Net income attributable to Edison International common shareholders	$ 612	$ 759	$ 739
Basic earnings per share:
Weighted average shares of common stock outstanding	381	380	373
Basic earnings per common share attributable to Edison International common shareholders	$ 1.61	$ 2	$ 1.98
Diluted earnings per share:
Weighted average shares of common stock outstanding, including effect of dilutive securities	383	380	374
Diluted earnings per common share attributable to Edison International common shareholders	$ 1.60	$ 2	$ 1.98
SCE
Total operating revenue	$ 17,172	$ 14,874	$ 13,546
Purchased power and fuel	6,375	5,540	4,932
Operation and maintenance	4,659	3,588	3,523
Wildfire-related claims, net of insurance recoveries	1,305	1,276	1,328
Wildfire Insurance Fund expense	214	215	336
Depreciation and amortization	2,559	2,216	1,965
Property and other taxes	497	462	435
Impairment, net of other (income)	50	67	(151)
Total operating expenses	15,659	13,364	12,368
Operating income	1,513	1,510	1,178
Interest expense	(1,005)	(791)	(768)
Other income	337	233	255
Income before income taxes	845	952	665
Income tax benefit	(109)	17	(277)
Net income	954	935	942
Less: Preferred and preference stock dividend requirements	107	106	132
Net income attributable to Edison International common shareholders	$ 847	$ 829	$ 810

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net income	$ 824	$ 925	$ 871
Other comprehensive income, net of tax:
Pension and postretirement benefits other than pensions	43	15
Other comprehensive income, net of tax	43	15
Comprehensive income	867	940	871
Less: Comprehensive income attributable to noncontrolling interests	107	106	132
Comprehensive income attributable to Edison International	760	834	739
SCE
Net income	954	935	942
Other comprehensive income, net of tax:
Pension and postretirement benefits other than pensions	24	9	(2)
Other comprehensive income, net of tax	24	9	(2)
Comprehensive income	$ 978	$ 944	$ 940

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
ASSETS
Cash and cash equivalents	$ 914	$ 390
Receivables, less allowances for uncollectible accounts at respective dates	1,695	1,398
Accrued unbilled revenue	641	794
Inventory	474	420
Prepaid expenses	248	258
Regulatory assets	2,497	1,778
Wildfire Insurance Fund contributions	204	204
Other current assets	397	249
Total current assets	7,070	5,491
Nuclear decommissioning trusts	3,948	4,870
Marketable securities	5	12
Other investments	50	39
Total investments	4,003	4,921
Utility property, plant and equipment, less accumulated depreciation and amortization	53,274	50,497
Nonutility property, plant and equipment, less accumulated depreciation at respective dates	212	203
Total property, plant and equipment	53,486	50,700
Receivables, less allowances for uncollectible accounts at respective dates	2	122
Regulatory assets	8,181	7,660
Wildfire Insurance Fund contributions	2,155	2,359
Operating lease right-of-use assets	1,442	1,932
Long-term insurance receivables	465	75
Other long-term assets	1,237	1,485
Total long-term assets	13,482	13,633
Total assets	78,041	74,745
LIABILITIES AND EQUITY
Short-term debt	2,015	2,354
Current portion of long-term debt	2,614	1,077
Accounts payable	2,359	2,002
Wildfire-related claims	121	131
Customer deposits	167	193
Regulatory liabilities	964	603
Current portion of operating lease liabilities	506	582
Other current liabilities	1,601	1,667
Total current liabilities	10,347	8,609
Long-term debt	27,025	24,170
Deferred income taxes and credits	6,149	5,740
Pensions and benefits	422	496
Asset retirement obligations	2,754	2,772
Regulatory liabilities	8,211	8,981
Operating lease liabilities	936	1,350
Wildfire-related claims	1,687	1,733
Other deferred credits and other long-term liabilities	2,988	3,105
Total deferred credits and other liabilities	23,147	24,177
Total liabilities	60,519	56,956
Commitments and contingencies (Note 12)
Preferred / preference stock	1,978	1,977
Common stock, no par value, including additional paid-in capital	6,200	6,071
Accumulated other comprehensive loss	(11)	(54)
Retained earnings	7,454	7,894
Total Edison International's shareholders' equity	15,621	15,888
Noncontrolling interests - preference stock of SCE	1,901	1,901
Total equity	17,522	17,789
Total liabilities and equity	78,041	74,745
SCE Recovery Funding LLC
ASSETS
Other current assets	45	19
Regulatory assets	834	325
LIABILITIES AND EQUITY
Current portion of long-term debt	29	14
Regulatory liabilities	33	14
Other current liabilities	4	1
Long-term debt	809	314
SCE
ASSETS
Cash and cash equivalents	766	279
Receivables, less allowances for uncollectible accounts at respective dates	1,675	1,393
Accrued unbilled revenue	638	794
Inventory	474	420
Prepaid expenses	292	257
Regulatory assets	2,497	1,778
Wildfire Insurance Fund contributions	204	204
Other current assets	384	222
Total current assets	6,930	5,347
Nuclear decommissioning trusts	3,948	4,870
Other investments	36	34
Total investments	3,984	4,904
Utility property, plant and equipment, less accumulated depreciation and amortization	53,274	50,497
Nonutility property, plant and equipment, less accumulated depreciation at respective dates	206	196
Total property, plant and equipment	53,480	50,693
Receivables, less allowances for uncollectible accounts at respective dates	2	122
Regulatory assets	8,181	7,660
Wildfire Insurance Fund contributions	2,155	2,359
Operating lease right-of-use assets	1,433	1,925
Long-term insurance receivables	139	75
Long-term insurance receivables due from affiliate	334
Other long-term assets	1,169	1,453
Total long-term assets	13,413	13,594
Total assets	77,807	74,538
LIABILITIES AND EQUITY
Short-term debt	925	2,354
Current portion of long-term debt	2,214	377
Accounts payable	2,351	1,999
Wildfire-related claims	121	131
Customer deposits	167	193
Regulatory liabilities	964	603
Current portion of operating lease liabilities	505	582
Other current liabilities	1,578	1,631
Total current liabilities	8,825	7,870
Long-term debt	24,044	21,733
Deferred income taxes and credits	7,545	7,181
Pensions and benefits	105	111
Asset retirement obligations	2,754	2,772
Regulatory liabilities	8,211	8,981
Operating lease liabilities	928	1,343
Wildfire-related claims	1,687	1,733
Other deferred credits and other long-term liabilities	2,919	2,979
Total deferred credits and other liabilities	24,149	25,100
Total liabilities	57,018	54,703
Commitments and contingencies (Note 12)
Preferred / preference stock	1,945	1,945
Common stock, no par value, including additional paid-in capital	2,168	2,168
Additional paid-in capital	8,441	7,033
Accumulated other comprehensive loss	(8)	(32)
Retained earnings	8,243	8,721
Total equity	20,789	19,835
Total liabilities and equity	77,807	74,538
SCE \| SCE Recovery Funding LLC
ASSETS
Regulatory assets	834	325
LIABILITIES AND EQUITY
Long-term debt	$ 809	$ 314

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Receivables, allowances for uncollectible accounts	$ 347	$ 193
Utility property, plant and equipment, accumulated depreciation	12,260	11,407
Nonutility property, plant and equipment, accumulated depreciation	106	98
Receivables, allowances for uncollectible accounts, Long term	$ 7	$ 116
Preferred stock, shares authorized	50,000,000	50,000,000
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	800,000,000	800,000,000
Common stock, shares issued	382,208,498	380,378,145
Common stock, shares outstanding	382,208,498	380,378,145
Regulatory assets: non-current	$ 8,181	$ 7,660
Long-term debt	27,025	24,170
SCE Recovery Funding LLC
Regulatory assets: non-current	834	325
Long-term debt	$ 809	$ 314
Series A
Preferred stock, shares issued	1,250,000	1,250,000
Preferred stock, shares outstanding	1,250,000	1,250,000
Series B
Preferred stock, shares issued	750,000	750,000
Preferred stock, shares outstanding	750,000	750,000
SCE
Receivables, allowances for uncollectible accounts	$ 347	$ 193
Utility property, plant and equipment, accumulated depreciation	12,260	11,407
Nonutility property, plant and equipment, accumulated depreciation	94	88
Receivables, allowances for uncollectible accounts, Long term	$ 7	$ 116
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	560,000,000	560,000,000
Common stock, shares issued	434,888,104	434,888,104
Common stock, shares outstanding	434,888,104	434,888,104
Regulatory assets: non-current	$ 8,181	$ 7,660
Long-term debt	24,044	21,733
SCE \| SCE Recovery Funding LLC
Regulatory assets: non-current	834	325
Long-term debt	$ 809	$ 314

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 824	$ 925	$ 871
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	2,633	2,288	2,029
Allowance for equity during construction	(137)	(118)	(121)
Impairment and other expense (income)	54	71	(116)
Gain on sale of lease interest and other operating income	(5)	(2)	(133)
Deferred income taxes	(177)	43	(296)
Wildfire Insurance Fund amortization expense	214	215	336
Other	80	40	36
Nuclear decommissioning trusts	(123)	(256)	(197)
Proceeds from Morongo Transmission LLC		400
Contributions to Wildfire Insurance Fund	(95)	(95)	(95)
Changes in operating assets and liabilities:
Receivables	(252)	(514)	(283)
Inventory	(58)	(21)	(43)
Accounts payable	367	138	87
Tax receivables and payables	18	13	113
Other current assets and liabilities	322	(333)	4
Regulatory assets and liabilities, net	(51)	(720)	(1,799)
Wildfire-related insurance receivable	(390)	708	932
Wildfire-related claims	(56)	(2,648)	(56)
Other noncurrent assets and liabilities	48	(123)	(6)
Net cash provided by operating activities	3,216	11	1,263
Cash flows from financing activities:
Long-term debt issued, plus premium and net of discount and issuance costs	5,971	5,412	3,073
Long-term debt repaid	(1,085)	(1,037)	(1,099)
Short-term debt issued	1,000	2,654	2,994
Short-term debt repaid	(1,543)	(2,255)	(1,126)
Common stock issued	13	32	912
Preferred stock issued, net		1,977
Preferred and preference stock redeemed			(308)
Commercial paper borrowing (repayments), net	(317)	(254)	304
Dividends and distribution to noncontrolling interests	(110)	(106)	(118)
Common stock dividends paid	(1,050)	(988)	(928)
Preferred and preference stock dividends paid	(99)	(35)
Other	101	45	23
Net cash provided by financing activities	2,881	5,445	3,727
Cash flows from investing activities:
Capital expenditures	(5,778)	(5,505)	(5,484)
Proceeds from sale of nuclear decommissioning trust investments	4,177	3,961	5,927
Purchases of nuclear decommissioning trust investments	(4,054)	(3,705)	(5,730)
Other	81	98	316
Net cash used in investing activities	(5,574)	(5,151)	(4,971)
Net increase in cash, cash equivalents and restricted cash	523	305	19
Cash, cash equivalents and restricted cash at beginning of period	394	89	70
Cash, cash equivalents and restricted cash at end of period	917	394	89
SCE
Cash flows from operating activities:
Net income	954	935	942
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	2,626	2,280	2,021
Allowance for equity during construction	(137)	(118)	(121)
Impairment and other expense (income)	50	67	(151)
Deferred income taxes	(111)	62	(263)
Wildfire Insurance Fund amortization expense	214	215	336
Other	59	28	18
Nuclear decommissioning trusts	(123)	(256)	(197)
Proceeds from Morongo Transmission LLC		400
Contributions to Wildfire Insurance Fund	(95)	(95)	(95)
Changes in operating assets and liabilities:
Receivables	(245)	(513)	(290)
Inventory	(58)	(21)	(43)
Accounts payable	366	131	63
Tax receivables and payables	(1)	31	141
Other current assets and liabilities	265	(333)	(7)
Regulatory assets and liabilities, net	(51)	(720)	(1,799)
Wildfire-related insurance receivable	(398)	708	932
Wildfire-related claims	(56)	(2,648)	(56)
Other noncurrent assets and liabilities	60	5	(4)
Net cash provided by operating activities	3,319	158	1,427
Cash flows from financing activities:
Long-term debt issued, plus premium and net of discount and issuance costs	5,032	5,411	2,676
Long-term debt repaid	(385)	(1,037)	(699)
Short-term debt issued		2,654	2,194
Short-term debt repaid	(1,543)	(2,255)	(326)
Capital contributions from Edison International Parent	1,400	1,633	1,432
Preferred and preference stock redeemed			(308)
Commercial paper borrowing (repayments), net	(406)	(124)	175
Common stock dividends paid	(1,300)	(975)	(1,332)
Preferred and preference stock dividends paid	(110)	(106)	(118)
Other	36	17	5
Net cash provided by financing activities	2,724	5,218	3,699
Cash flows from investing activities:
Capital expenditures	(5,776)	(5,503)	(5,480)
Proceeds from sale of nuclear decommissioning trust investments	4,177	3,961	5,927
Purchases of nuclear decommissioning trust investments	(4,054)	(3,705)	(5,730)
Other	96	95	189
Net cash used in investing activities	(5,557)	(5,152)	(5,094)
Net increase in cash, cash equivalents and restricted cash	486	224	32
Cash, cash equivalents and restricted cash at beginning of period	280	56	24
Cash, cash equivalents and restricted cash at end of period	$ 766	$ 280	$ 56

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Premium and net of discount and issuance costs	$ (62)	$ (43)	$ 23
SCE
Premium and net of discount and issuance costs	$ (51)	$ (43)	$ 26

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Preferred stock SCE	Preferred stock	Common Stock, Including APIC	Common stock SCE	Additional Paid-in Capital SCE	Accumulated Other Comprehensive Loss SCE	Accumulated Other Comprehensive Loss	Retained Earnings SCE	Retained Earnings	Equity Attributable to Common Shareholders	Noncontrolling Interest	SCE	Total
Beginning balance at Dec. 31, 2019	$ 2,245		$ 4,990	$ 2,168	$ 3,939	$ (39)	$ (69)	$ 9,514	$ 8,382	$ 13,303	$ 2,193	$ 17,827	$ 15,496
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income								942	739	739	132	942	871
Other comprehensive income						(2)						(2)
Capital contribution from Edison International Parent					1,432							1,432
Common stock issued, net of issuance cost			942							942			942
Common stock dividends declared								(1,132)	(965)	(965)		(1,132)	(965)
Preferred stock dividend declared								(117)				(117)
Dividends to noncontrolling interests											(117)		(117)
Stock-based compensation					(5)							(5)
Noncash stock-based compensation			30		14			(1)	(1)	29	1	13	30
Redemption of preferred and preference stock	(300)				7			(15)			(308)	(308)	(308)
Ending Balance at Dec. 31, 2020	1,945		5,962	2,168	5,387	(41)	(69)	9,191	8,155	14,048	1,901	18,650	15,949
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income								935	819	819	106	935	925
Other comprehensive income						9	15			15		9	15
Capital contribution from Edison International Parent					1,633							1,633
Common stock issued, net of issuance cost			71							71			71
Preferred stock issued, net of issuance cost		$ 1,977								1,977			1,977
Common stock dividends declared								(1,300)	(1,021)	(1,021)		(1,300)	(1,021)
Preferred stock dividend declared								(106)	(60)	(60)		(106)	(60)
Dividends to noncontrolling interests											(106)		(106)
Stock-based compensation					(7)							(7)
Noncash stock-based compensation			38		20			1	1	39		21	39
Ending Balance at Dec. 31, 2021	1,945	1,977	6,071	2,168	7,033	(32)	(54)	8,721	7,894	15,888	1,901	19,835	17,789
Beginning balance at Dec. 31, 2020	1,945		5,962	2,168	5,387	(41)	(69)	9,191	8,155	14,048	1,901	18,650	15,949
Ending Balance at Dec. 31, 2022	1,945	1,978	6,200	2,168	8,441	(8)	(11)	8,243	7,454	15,621	1,901	20,789	17,522
Beginning balance at Dec. 31, 2021	1,945	1,977	6,071	2,168	7,033	(32)	(54)	8,721	7,894	15,888	1,901	19,835	17,789
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income								954	717	717	107	954	824
Other comprehensive income						24	43			43		24	43
Capital contribution from Edison International Parent					1,400							1,400
Common stock issued, net of issuance cost			87							87			87
Common stock dividends declared								(1,325)	(1,083)	(1,083)		(1,325)	(1,083)
Preferred stock dividend declared								(107)	(74)	(74)		(107)	(74)
Dividends to noncontrolling interests											(107)		(107)
Stock-based compensation					(14)							(14)
Noncash stock-based compensation			42		22					42		22	42
Other		1								1			1
Ending Balance at Dec. 31, 2022	$ 1,945	$ 1,978	$ 6,200	$ 2,168	$ 8,441	$ (8)	$ (11)	$ 8,243	$ 7,454	$ 15,621	$ 1,901	$ 20,789	$ 17,522

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Dividends declared per common share (in dollars per share)	$ 2.8375	$ 2.6875	$ 2.5750
Series A
Preferred stock dividends (in dollars per share)	53.750	43.5972
Series B
Dividends declared per common share (in dollars per share)		6.8056
Preferred stock dividends (in dollars per share)	42.08333
Minimum \| Noncontrolling Interest
Preferred stock dividends (in dollars per share)	65.1098	62.50	0.757
Preference stock dividends (in dollars per share)			62.50
Maximum \| Noncontrolling Interest
Preferred stock dividends (in dollars per share)	143.75	143.75	0.886
Preference stock dividends (in dollars per share)			143.75
SCE
Dividends declared per common share (in dollars per share)	3.0468	2.9893	2.6030
SCE \| Minimum
Preferred stock dividends (in dollars per share)	65.1098	62.50	0.757
Preference stock dividends (in dollars per share)			62.50
SCE \| Maximum
Preferred stock dividends (in dollars per share)	$ 143.75	$ 143.75	0.886
Preference stock dividends (in dollars per share)			$ 143.75

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2022
Summary of Significant Accounting Policies
Summary of Significant Accounting Policies	Note 1. Organization and Basis of Presentation Edison International is the ultimate parent holding company of Southern California Edison Company ("SCE") and Edison Energy, LLC ("Edison Energy Group"). SCE is an investor-owned public utility primarily engaged in the business of supplying and delivering electricity to an approximately 50,000 square mile area of Southern California. Edison Energy Group is an indirect wholly-owned subsidiary of Edison International and a holding company for Edison Energy, LLC ("Edison Energy") which is engaged in the competitive business of providing decarbonization and energy solutions to commercial, institutional and industrial customers in North America and Europe. Edison Energy's business activities are currently not material to report as a separate business segment. These combined notes to the consolidated financial statements apply to both Edison International and SCE unless otherwise described. Edison International's consolidated financial statements include the accounts of Edison International, SCE, and other wholly owned and controlled subsidiaries. References to Edison International refer to the consolidated group of Edison International and its subsidiaries. References to "Edison International Parent and Other" refer to Edison International Parent and its competitive subsidiaries and "Edison International Parent" refer to Edison International on a stand-alone basis, not consolidated with its subsidiaries. SCE's consolidated financial statements include the accounts of SCE, its wholly owned and controlled subsidiaries and a variable interest entity of which SCE is the primary beneficiary, SCE Recovery Funding LLC. All intercompany transactions have been eliminated from the consolidated financial statements. Edison International's and SCE's accounting policies conform to accounting principles generally accepted in the United States of America ("GAAP"), including the accounting principles for rate-regulated enterprises, which reflect the ratemaking policies of the California Public Utility Commission ("CPUC") and the Federal Energy Regulatory Commission ("FERC"). SCE applies authoritative guidance for rate-regulated enterprises to the portion of its operations in which regulators set rates at levels intended to recover the estimated costs of providing service, plus a return on net investments in assets, or rate base. Regulators may also impose certain penalties or grant certain incentives. Due to timing and other differences in the collection of electric utility revenue, these principles require an incurred cost that would otherwise be charged to expense by a non-regulated entity to be capitalized as a regulatory asset if it is probable that the cost is recoverable through future rates; and conversely the principles require recording of a regulatory liability for amounts collected in rates to recover costs expected to be incurred in the future or amounts collected in excess of costs incurred and refundable to customers. In addition, SCE recognizes revenue and regulatory assets from alternative revenue programs, which enables the utility to adjust future rates in response to past activities or completed events, if certain criteria are met. SCE assesses, at the end of each reporting period, whether regulatory assets are probable of future recovery. See Note 11 for composition of regulatory assets and liabilities. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reported period. Actual results could differ from those estimates. Certain prior year amounts have been conformed to the current year's presentation, including separate presentation of common stock and preferred and preference stock dividends in SCE's consolidated statements of cash flows. Cash, Cash Equivalents and Restricted Cash Cash equivalents consist of investments in money market funds. Generally, the carrying value of cash equivalents equals the fair value, as these investments have original maturities of three months or less. The cash equivalents were as follows: Edison International SCE December 31, (in millions) 2022 2021 2022 2021 Money market funds $ 784 $ 329 $ 647 $ 230 Cash is temporarily invested until required for check clearing. Checks issued, but not yet paid by the financial institution, are reclassified from cash to accounts payable at the end of each reporting period. The following table sets forth the cash, cash equivalents and restricted cash included in the consolidated statements of cash flows: December 31, December 31, (in millions) 2022 2021 Edison International: Cash and cash equivalents $ 914 $ 390 Short-term restricted cash 1 3 4 Total cash, cash equivalents and restricted cash $ 917 $ 394 SCE: Cash and cash equivalents $ 766 $ 279 Short-term restricted cash 1 — 1 Total cash, cash equivalents and restricted cash $ 766 $ 280 1 Reflected in "Other current assets" on Edison International's and SCE's consolidated balance sheets. Allowance for Uncollectible Accounts The allowance for uncollectible accounts is recorded based on SCE's estimate of expected credit losses and adjusted over the life of the receivables as needed. Since the customer base of SCE is concentrated in Southern California and exposes SCE to a homogeneous set of economic conditions, the allowance is measured on a collective basis on the historical amounts written-off, assessment of customer collectibility and current economic trends, including unemployment rates and likelihood of recession for the region. At December 31, 2022, this included the estimated impacts of the COVID-19 pandemic. The following table sets forth the changes in allowance for uncollectible accounts for SCE: (in millions) Customers All others Total Balance at December 31, 2019 $ 35 $ 14 $ 49 Current period provision for uncollectible accounts Included in operation and maintenance expenses in earning activities 1 36 9 45 Included in operation and maintenance expenses in cost-recovery activities 2 15 — 15 Deferred to regulatory memorandum accounts 105 — 105 Write-offs, net of recoveries (16) (10) (26) Balance at December 31, 2020 $ 175 $ 13 $ 188 Current period provision for uncollectible accounts Included in operation and maintenance expenses in earning activities 1 33 11 44 Included in operation and maintenance expenses in cost-recovery activities 2 74 — 74 Deferred to regulatory memorandum accounts 17 — 17 Write-offs, net of recoveries (6) (8) (14) Balance at December 31, 2021³ $ 293 $ 16 $ 309 Current period provision for uncollectible accounts Included in operation and maintenance expenses in earning activities 1 71 11 82 Included in operation and maintenance expenses in cost-recovery activities 2,4 58 — 58 Deferred to regulatory memorandum accounts 4 (18) — (18) Write-offs, net of recoveries (70) (7) (77) Balance at December 31, 2022³ $ 334 $ 20 $ 354 1 Earning activities is one of SCE's disaggregated revenue sources. See Note 7 for further details. 2 Cost-recovery activities is one of SCE's disaggregated revenue sources. See Note 7 for further details. This portion of costs from the allowance for uncollectible expenses is recovered through the residential uncollectibles balancing account. 3 Approximately $7 million and $116 million of allowance for uncollectible accounts are included in long-term "Receivables" on SCE's consolidated balance sheets as of December 31, 2022 and December 31, 2021, respectively. 4 Represents current year changes in the allowance for uncollectible accounts and excludes authorized recovery of previously deferred balances. Inventory SCE's inventory is primarily composed of materials, supplies and spare parts, and generally stated at weighted average cost. Emission Allowances and Energy Credits SCE is allocated greenhouse gas ("GHG") allowances annually which it is then required to sell into quarterly auctions. GHG proceeds from the auctions are recorded as a regulatory liability to be refunded to customers. SCE purchases GHG allowances in quarterly auctions or from counterparties to satisfy its GHG emission compliance obligations and recovers such costs of GHG allowances from customers. GHG allowances held for use are classified as "Other current assets" on the consolidated balance sheets and are stated, similar to an inventory method, at the lower of weighted average cost or market. SCE will evaluate GHG allowances for impairment upon a triggering event that would indicate SCE might not recover the full cost of an allowance. SCE had GHG allowances held for use of $87 million and $47 million at December 31, 2022 and 2021, respectively. GHG emission obligations were $55 million and $34 million at December 31, 2022 and 2021, respectively, and are classified as "Other current liabilities" on the consolidated balance sheets. SCE is allocated low carbon fuel standard ("LCFS") credits which it sells to market participants. Proceeds from the sales, net of selling fees and program administration expenses, are recorded in a balancing account to be refunded to eligible customers. SCE's net proceeds from the sale of these LCFS credits were $218 million and $193 million and are classified as "Regulatory liabilities" on the consolidated balance sheets at December 31, 2022 and 2021, respectively. Property, Plant and Equipment SCE plant additions, including replacements and betterments, are capitalized. Direct material and labor and indirect costs such as construction overhead, administrative and general costs, pension and benefits, and property taxes are capitalized as part of plant additions. The CPUC authorizes a capitalization rate for each of the indirect costs which are allocated to each project based on either labor or total costs. Estimated useful lives authorized by the CPUC in the 2021 General Rate Case ("GRC") and weighted average useful lives of SCE's property, plant and equipment, are as follows: Weighted Average Estimated Useful Lives Useful Lives Generation plant 10 years to 55 years 39 years Distribution plant 20 years to 67 years 50 years Transmission plant 30 years to 65 years 53 years General plant and other 5 years to 60 years 20 years Depreciation of utility property, plant and equipment is computed on a straight-line, remaining-life basis. SCE's depreciation expense was $2.5 billion, $2.0 billion and $1.8 billion for 2022, 2021 and 2020, respectively. Depreciation expense stated as a percent of average original cost of depreciable utility plant was, on a composite basis, 4.2%, 3.7% and 3.6% for 2022, 2021 and 2020, respectively. The original costs of retired property are charged to accumulated depreciation. See Note 2 for further information. Nuclear fuel for the Palo Verde Nuclear Generating Station ("Palo Verde") is recorded as utility plant (nuclear fuel in the fabrication and installation phase is recorded as construction in progress) in accordance with CPUC ratemaking procedures. Palo Verde nuclear fuel is amortized using the units of production method. Allowance for funds used during construction ("AFUDC") represents the estimated cost of debt and equity funds that finance utility-plant construction and is capitalized during certain plant construction. AFUDC is recovered in rates through depreciation expense over the useful life of the related asset. AFUDC equity represents a method to compensate SCE for the estimated cost of equity used to finance utility plant additions and is recorded as part of construction in progress. AFUDC equity was $137 million, $118 million and $121 million in 2022, 2021 and 2020, respectively, and is reflected in "Other income." AFUDC debt was $53 million, $50 million and $53 million in 2022, 2021 and 2020, respectively and is reflected as a reduction of "Interest expense." Major Maintenance Major maintenance costs for SCE's facilities and equipment are expensed as incurred. Impairment of Long-Lived Assets Impairments of long-lived assets are evaluated based on a review of estimated future cash flows expected to be generated whenever events or changes in circumstances indicate that the carrying amount of such investments or assets may not be recoverable. If the carrying amount of a long-lived asset exceeds expected future cash flows, undiscounted and without interest charges, an impairment loss is recognized in the amount of the excess of fair value over the carrying amount. Fair value is determined via market, cost and income-based valuation techniques, as appropriate. Accounting principles for rate-regulated enterprises also require recognition of an impairment loss if it becomes probable that the regulated utility will abandon a plant investment, or if it becomes probable that the cost of a recently completed plant will be disallowed, either directly or indirectly, for ratemaking purposes and a reasonable estimate of the amount of the disallowance can be made. In September 2022, the CPUC approved the settlement agreement between SCE and The Utility Reform Network for SCE's Customer Service Re-platform ("CSRP") proceeding filed in 2021 for expenditures incurred through April 2021. As a result of the settlement agreement, SCE recorded a $47 million ($34 million after-tax) impairment of property, plant and equipment, reflected in "Impairment, net of other (income)" in the consolidated statements of income. In August 2021, as a result of adoption of 2021 GRC, SCE recorded $79 million ($47 million after-tax) in impairment charges related to disallowed historical capital expenditures of pole replacements the CPUC determined were performed prematurely in 2021. The impairment is included in "Impairment, net of other (income)" in the consolidated statements of income. As of December 31, 2022 and 2021, SCE has $177 million and $186 million in assets recorded in property, plant and equipment in relation to restoration costs related to the 2017/2018 Wildfire/Mudslide Events, respectively, which may not be recoverable. These assets would be impaired if the restoration costs are permanently disallowed by the CPUC in future cost recovery proceedings. For further details, see Note 12. Initial and annual contributions to the wildfire insurance fund established pursuant to California Assembly Bill 1054 (the "Wildfire Insurance Fund" and "AB 1054") Edison International and SCE accounted for the contributions to the Wildfire Insurance Fund similarly to prepaid insurance. No period of coverage was provided in AB 1054, therefore expense is being allocated to periods ratably based on an estimated period of coverage. At December 31, 2022 and 2021, Edison International and SCE had a $2.2 billion and a $2.4 billion long-term asset, respectively, as well as a $204 million current asset for both years, reflected as "Wildfire Insurance Fund contributions" in their consolidated balance sheets for the initial $2.4 billion contribution made during 2019 and the present value of annual contributions SCE committed to make to the Wildfire Insurance Fund, reduced by amortization. At December 31, 2022 and 2021, long-term liabilities of $536 million and $620 million, respectively, have been reflected in "Other deferred credits and other long-term liabilities" for the present value of unpaid contributions. Contributions were discounted to the present value using US treasury interest rates at the date SCE committed to participate in the Wildfire Insurance Fund. In 2022 and 2021, the asset was amortized based on an estimated period of coverage of 15 years. All expenses related to the contributions are being reflected in "Wildfire Insurance Fund Expense" in the consolidated statements of income. Changes in the estimated period of coverage provided by the Wildfire Insurance Fund could lead to material changes in future expense recognition. In estimating the period of coverage, Edison International and SCE used Monte Carlo Monte Carlo the expected life of the Wildfire Insurance Fund remained 15 years from the date SCE committed to participate in the Wildfire Insurance Fund. Edison International and SCE will assess the Wildfire Insurance Fund contribution assets for impairment in the event that a participating utility's electrical equipment is found to be the substantial cause of a catastrophic wildfire, based on the ability of SCE to benefit from the coverage provided by the Wildfire Insurance Fund in an amount equal to the recorded assets. Nuclear Decommissioning and Asset Retirement Obligations The fair value of a liability for an asset retirement obligation ("ARO") is recorded in the period in which it is incurred, including a liability for the fair value of a conditional ARO, if the fair value can be reasonably estimated even though uncertainty exists about the timing and/or method of settlement. When an ARO liability is initially recorded, SCE capitalizes the cost by increasing the carrying amount of the related long-lived asset. For each subsequent period, the liability is increased for accretion expense and the capitalized cost is depreciated over the useful life of the related asset. SCE has not recorded an ARO for assets that are expected to operate indefinitely or where SCE cannot estimate a settlement date (or range of potential settlement dates). As such, ARO liabilities are not recorded for certain retirement activities, including certain hydroelectric facilities. The following table summarizes the changes in SCE's ARO liability: December 31, (in millions) 2022 2021 Beginning balance $ 2,772 $ 2,930 Accretion 1 143 157 Revisions 28 (77) Liabilities settled (189) (238) Ending balance $ 2,754 $ 2,772 1 An ARO represents the present value of a future obligation. Accretion is an increase in the liability to account for the time value of money resulting from discounting. AROs related to decommissioning of SCE's nuclear power facilities are based on site-specific studies conducted as part of each Nuclear Decommissioning Cost Triennial Proceeding ("NDCTP") conducted before the CPUC. Revisions of an ARO are established for updated site-specific decommissioning cost estimates. The ARO for decommissioning SCE's San Onofre Nuclear Generating Station ("San Onofre") and Palo Verde nuclear power facilities is $2.3 billion as of December 31, 2022. The liability to decommission SCE's nuclear power facilities is based on a 2020 decommissioning study, filed as part of the 2021 NDCTP, for San Onofre Unit 1, 2 and 3 and a 2019 decommissioning study for Palo Verde, with revisions to the cost estimate in 2020. SCE records an ARO regulatory liability as a result of timing differences between the recognition of costs and the recovery of costs through the ratemaking process. For further information, see Note 11. Decommissioning of San Onofre Unit 1 began in 1999 and the transfer of spent nuclear fuel from Unit 1 to dry cask storage in the Independent Spent Fuel Storage Installation ("ISFSI") 1 was completed in 2005. Major decommissioning work for Unit 1 has been completed except for certain underground work. Decommissioning of San Onofre Units 2 and 3 began in June 2013 and the transfer of spent nuclear fuel from San Onofre Units 2 and 3 to dry cask storage in the two ISFSIs was completed in August 2020. In October 2019, the California Coastal Commission approved SCE's application for a Coastal Development Permit, the principal discretionary permit required to start major decommissioning activities at San Onofre Units 2 and 3. In August 2020, SCE commenced, and is currently conducting, major decommissioning activities in accordance with the terms of the permit. Decommissioning costs, which are recovered through customer rates over the term of each nuclear facility's operating license, are recorded as a component of depreciation expense, with a corresponding credit to the ARO regulatory liability. Due to regulatory recovery of SCE's nuclear decommissioning expense, prudently incurred costs for nuclear decommissioning activities do not affect SCE's earnings. Amortization of the ARO asset (included within the unamortized nuclear investment) and accretion of the ARO liability are deferred as decreases to the ARO regulatory liability account, resulting in no impact on earnings. SCE has collected in rates amounts for the future decommissioning of its nuclear assets and has placed those amounts in independent trusts. Amounts collected in rates in excess of the ARO liability are classified as regulatory liabilities. Changes in the estimated costs, timing of decommissioning or the assumptions underlying these estimates could cause material revisions to the estimated total cost to decommission. SCE currently estimates that it will spend approximately $6.3 billion through 2080 to decommission its nuclear facilities. This estimate is based on SCE's decommissioning cost methodology used for ratemaking purposes, escalated at rates ranging from 2.3% to 7.5% (depending on the cost element) annually. These costs are expected to be funded from independent decommissioning trusts. SCE estimates annual after-tax earnings on the decommissioning funds of 1.6% to 4.9% dependent on asset class. If the assumed return on trust assets is not earned or costs escalate at higher rates, SCE expects that additional funds needed for decommissioning will be recoverable through future rates, subject to a reasonableness review. See Note 10 for further information. Due to regulatory recovery of SCE's nuclear decommissioning expense, prudently incurred costs for nuclear decommissioning activities do not affect SCE's earnings. SCE's nuclear decommissioning costs are subject to CPUC review through the triennial regulatory proceedings. SCE's nuclear decommissioning trust investments primarily consist of fixed income investments that are classified as available-for-sale and equity investments. Due to regulatory mechanisms, investment earnings and realized gains and losses have no impact on earnings. Unrealized gains and losses on decommissioning trust funds, including impairment, increase or decrease the trust assets and the related regulatory asset or liability and have no impact on electric utility revenue or decommissioning expense. SCE reviews each fixed income security for impairment on the last day of each month. If the fair value on the last day of the month is less than the amortized cost for that security, SCE impairs the disclosed amortized cost. If the fair value is greater or less than the carrying value for that security at the time of sale, SCE recognizes a related realized gain or loss, respectively. Deferred Financing Costs Debt premium, discount and issuance expenses incurred in connection with obtaining financing are deferred and amortized on a straight-line basis. Under CPUC ratemaking procedures, SCE's debt reacquisition expenses are amortized over the remaining life of the reacquired debt or, if refinanced, the life of the new debt. SCE had unamortized losses on reacquired debt of $109 million and $121 million at December 31, 2022 and 2021, respectively, reflected as long-term "Regulatory assets" in the consolidated balance sheets. In addition, Edison International and SCE had debt issuance costs related to issuances of long-term debt of $178 million and $165 million at December 31, 2022 and $153 million and $143 million at December 31, 2021, respectively. These costs are recorded as an offset to long-term debt. Amortization of deferred financing costs charged to interest expense is as follows: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Amortization of deferred financing costs charged to interest expense $ 37 $ 34 $ 32 $ 31 $ 29 $ 27 Revenue Recognition Revenue is recognized by Edison International and SCE when a performance obligation to transfer control of the promised goods is satisfied or when services are rendered to customers. This typically occurs when electricity is delivered to customers, which includes amounts for services rendered but unbilled at the end of a reporting period. SCE's Revenue from Contracts with Customers Provision of Electricity SCE principally generates revenue through supplying and delivering electricity to its customers. Rates charged to customers are based on tariff rates, approved by the CPUC and FERC. Starting with SCE's 2021 GRC, revenue will be authorized through quadrennial GRC proceedings, which are intended to provide SCE a reasonable opportunity to recover its costs and earn a return on its CPUC-jurisdictional rate base. The CPUC sets an annual revenue requirement for the base year and the remaining three years are set by a methodology established in the GRC proceeding. Revenue was previously authorized by the CPUC in triennial GRC proceedings. As described above, SCE also earns revenue, with no return, to recover costs for power procurement, certain wildfire related expenses and other activities. Revenue is authorized by the FERC through a formula rate which is intended to provide SCE a reasonable opportunity to recover transmission capital and operating costs that are prudently incurred, including a return on its FERC-jurisdictional rate base. Under the operation of the formula rate, transmission revenue is updated to actual cost of service annually. For SCE's electricity sales for both residential and non-residential customers, SCE satisfies the performance obligation of delivering electricity over time as the customers simultaneously receive and consume the delivered electricity. Energy sales are typically on a month-to-month implied contract for transmission, distribution and generation services. Revenue is recognized over time as the energy is supplied and delivered to customers and the respective revenue is billed and paid on a monthly basis. CPUC and FERC rates decouple authorized revenue from the volume of electricity sales and the price of energy procured so that SCE receives revenue equal to amounts authorized by the relevant regulatory agencies. As a result, the volume of electricity sold to customers and specific customer classes does not have a direct impact on SCE's financial results. See Note 7 for further information on SCE's revenue. Sales and Use Taxes SCE bills certain sales and use taxes levied by state or local governments to its customers. Included in these sales and use taxes are franchise fees, which SCE pays to various municipalities (based on contracts with these municipalities) in order to operate within the limits of the municipality. SCE bills these franchise fees to its customers based on a CPUC-authorized rate. These franchise fees, which are required to be paid regardless of SCE's ability to collect from the customer, are accounted for on a gross basis. SCE's franchise fees billed to customers were $172 million, $147 million and $131 million for the years ended December 31, 2022, 2021, and 2020, respectively. When SCE acts as an agent for sales and use tax, the taxes are accounted for on a net basis. Amounts billed to and collected from customers for these taxes are remitted to the taxing authorities and are not recognized as electric utility revenue. SCE's Alternative Revenue Programs The CPUC and FERC have authorized additional, alternative revenue programs which adjust billings for the effects of broad external factors. These alternative revenue programs allow SCE to recover costs that SCE has been authorized to pass on to customers, including costs of certain operations and maintenance activities, costs to purchase electricity and natural gas, and to fund public purpose, demand response, and customer energy efficiency programs. In general, revenue is recognized for these alternative revenue programs at the time the costs are incurred. SCE begins recognizing revenues for these programs when a program has been established by an order from either the CPUC or FERC that allows for automatic adjustment of future rates, the amount of revenue for the period is objectively determinable and probable of recovery and the revenue will be collected within 24 months following the end of the annual period. Power Purchase Agreements SCE enters into power purchase agreements ("PPAs") in the normal course of business. A power purchase agreement may be considered a variable interest in a variable interest entity ("VIE"). If SCE is the primary beneficiary in the VIE, SCE should consolidate the VIE. None of SCE's PPAs resulted in consolidation at December 31, 2022 and 2021. See Note 3 for further discussion of PPAs that are considered variable interests. A PPA may also contain a lease for accounting purposes. See "Leases" below and Note 12 and Note 13 for further discussion of SCE's PPAs. A PPA that does not contain a lease may be classified as a derivative which is recorded at fair value on the consolidated balance sheets. These PPAs may be eligible for an election to designate as a normal purchase or sale, which is accounted for on an accrual basis as an executory contract. PPAs that do not meet the above classifications are accounted for on an accrual basis. Derivative Instruments SCE records derivative instruments on its consolidated balance sheets as either assets or liabilities measured at fair value unless otherwise exempted from derivative treatment as normal purchases or sales. The normal purchases and sales exception requires, among other things, physical delivery in quantities expected to be used or sold over a reasonable period in the normal course of business. Realized gains and losses from SCE's derivative instruments are expected to be recovered from or refunded to customers through regulatory mechanisms and, therefore, SCE's fair value changes have no impact on purchased power expense or earnings. SCE does not use hedge accounting for derivative transactions due to regulatory accounting treatment. Where SCE's derivative instruments are subject to a master netting agreement and certain criteria are met, SCE presents its derivative assets and liabilities on a net basis on its consolidated balance sheets. In addition, derivative positions are offset against margin and cash collateral deposits. The results of derivative activities are recorded as part of cash flows from operating activities on the consolidated statements of cash flows. See Note 6 for further information on derivative instruments. Leases A lease is defined as a contract, or part of a contract, that conveys the right to control the use of identified assets for a period of time in exchange for consideration. An entity controls the use when it has a right to obtain substantially all of the benefits from the use of the identified asset and has the right to direct the use of the asset. SCE determines if an arrangement is a lease at contract inception. For all classes of underlying assets, except battery storage assets which were first contracted in 2020 and for which each component will be separately accounted for, SCE includes both the lease and non-lease components as a single component and accounts for it as a lease. Lease liabilities are recognized based on the present value of the lease payments over the lease term at the commencement date. SCE calculates and uses the rate implicit in the lease if the information is readily available or if not available, SCE uses its incremental borrowing rate in determining the present value of lease payments. Incremental borrowing rates are comprised of underlying risk-free rates and secured credit spreads relative to first mortgage bonds with like tenors of lease term durations. Lease right-of-use ("ROU") assets are based on the liability, subject to adjustments, such as lease incentives. The ROU assets also include any lease payments made at or before the commencement date. SCE excludes variable lease payments in measuring lease assets and lease liabilities, other than those that depend on an index or a rate or are in substance fixed payments. SCE's lease terms include options to extend or terminate the lease when it is reasonably certain that such options will be exercised. SCE elected to exclude from the balance sheet short-term lease contracts of one year or less. SCE enters int

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
Property, Plant and Equipment	Dec. 31, 2022
Property, Plant and Equipment
Property, Plant and Equipment	Note 2. SCE's utility property, plant and equipment included in the consolidated balance sheets is composed of the following: December 31, (in millions) 2022 2021 Distribution $ 32,754 $ 30,821 Transmission 18,106 17,016 Generation 3,880 3,769 General plant and other 6,121 6,108 Accumulated depreciation (12,260) (11,407) 48,601 46,307 Construction work in progress 4,551 4,067 Nuclear fuel, at amortized cost 122 123 Total utility property, plant and equipment $ 53,274 $ 50,497 Capitalized Software Costs SCE capitalizes costs incurred during the application development stage of internal use software projects to property, plant and equipment. SCE amortizes capitalized software costs ratably over the expected lives of the software, primarily ranging from 5 to 7 years and commencing upon operational use. Capitalized software costs, included in general plant and other above, was $2.0 billion at both December 31, 2022 and 2021, and accumulated amortization was $0.7 billion and $0.6 billion, at December 31, 2022 and 2021, respectively. Amortization expense for capitalized software was Jointly Owned Utility Projects SCE owns undivided interests in transmission and generating assets for which each participant provides its own financing. SCE's proportionate share of these assets is reflected in the consolidated balance sheets and included in the above table. SCE's proportionate share of expenses for each project is reflected in the consolidated statements of income. The following is SCE's investment in each asset as of December 31, 2022: Construction Plant in Work in Accumulated Nuclear Fuel Net Book Ownership (in millions) Service Progress Depreciation (at amortized cost) Value Interest Transmission systems: Eldorado $ 351 $ 107 $ (56) $ — $ 402 77 % Pacific Intertie 354 2 (82) — 274 50 % Generating station: Palo Verde (nuclear) 2,180 56 (1,653) 122 705 16 % Total $ 2,885 $ 165 $ (1,791) $ 122 $ 1,381 In addition to the jointly owned assets in the table above, SCE has ownership interests in jointly owned power poles with other companies.

Variable Interest Entities

Variable Interest Entities	12 Months Ended
Variable Interest Entities	Dec. 31, 2022
Variable Interest Entities
Variable Interest Entities	Note 3. A VIE is defined as a legal entity that meets one of two conditions: (1) the equity owners do not have sufficient equity at risk, or (2) the holders of the equity investment at risk, as a group, lack any of the following three characteristics: decision-making rights, the obligation to absorb losses or the right to receive the expected residual returns of the entity. The primary beneficiary is identified as the variable interest holder that has both the power to direct the activities of the VIE that most significantly impact the entity's economic performance and the obligation to absorb losses or the right to receive benefits from the entity that could potentially be significant to the VIE. The primary beneficiary is required to consolidate the VIE. Commercial and operating activities are generally the factors that most significantly impact the economic performance of such VIEs. Commercial and operating activities include construction, operation and maintenance, fuel procurement, dispatch and compliance with regulatory and contractual requirements. Variable Interest in VIEs that are Consolidated SCE Recovery Funding LLC is a bankruptcy remote, wholly owned special purpose subsidiary, consolidated by SCE. SCE Recovery Funding LLC is a VIE and SCE is the primary beneficiary. SCE Recovery Funding LLC was formed in 2021 for the purpose of issuing and servicing securitized bonds related to SCE's AB 1054 Excluded Capital Expenditures. In February 2022 and 2021, SCE Recovery Funding LLC issued $533 million and $338 million of securitized bonds, respectively, and used the proceeds to acquire SCE's right, title and interest in and to non-bypassable rates and other charges to be collected from certain existing and future customers in SCE's service territory, associated with the AB 1054 Excluded Capital Expenditures ("Recovery Property"), until the bonds are paid in full and all financing costs have been recovered. The securitized bonds are secured by the Recovery Property and cash collections from the non-bypassable rates and other charges are the sole source of funds to satisfy the debt obligation. The bondholders have no recourse to SCE. For further details, see Note 5. The following table summarizes the impact of SCE Recovery Funding LLC on SCE's and Edison International's consolidated balance sheets. December 31, December 31, (in millions) 2022 2021 Other current assets $ 45 $ 19 Regulatory assets: non-current 834 325 Regulatory liabilities: current 33 14 Current portion of long-term debt 29 14 Other current liabilities 4 1 Long-term debt 1 809 314 1 The bondholders have no recourse to SCE. Balance is net of unamortized debt issuance costs. Variable Interest in VIEs that are not Consolidated Power Purchase Agreements SCE has PPAs that are classified as variable interests in VIEs, including agreements through which SCE provides the natural gas to fuel the plants, fixed price contracts for renewable energy, and resource adequacy agreements that, upon the seller's election, include the purchase of energy at fixed prices. SCE has concluded that it is not the primary beneficiary of these VIEs since it does not control the commercial and operating activities of these entities. Since payments for capacity are the primary source of income, the most significant economic activity for these VIEs is the operation and maintenance of the power plants. As of the balance sheet date, the carrying amount of assets and liabilities in SCE's consolidated balance sheet that relate to involvement with VIEs that are not consolidated result from amounts due under the PPAs. Under these contracts, SCE recovers the costs incurred through demonstration of compliance with its CPUC-approved long-term power procurement plans. SCE has no residual interest in the entities and has not provided or guaranteed any debt or equity support, liquidity arrangements, performance guarantees or other commitments associated with these contracts other than the purchase commitments described in Note 12. As a result, there is no significant potential exposure to loss to SCE from its variable interest in these VIEs. The aggregate contracted capacity dedicated to SCE from these VIE projects was 3,907 megawatts ("MW") and 3,545 MW at December 31, 2022 and 2021, respectively, and the amounts that SCE paid to these projects were $608 million and $673 million for the years ended December 31, 2022 and 2021, respectively. These amounts are recoverable in customer rates, subject to reasonableness review. Unconsolidated Trusts of SCE SCE Trust II, Trust III, Trust IV, Trust V and Trust VI were formed in 2013, 2014, 2015, 2016 and 2017, respectively, for the exclusive purpose of issuing the 5.10%, 5.75%, 5.375%, 5.45% and 5.00% trust preference securities, respectively ("trust securities"). The trusts are VIEs. SCE has concluded that it is not the primary beneficiary of these VIEs as it does not have the obligation to absorb the expected losses or the right to receive the expected residual returns of the trusts. SCE Trust II, Trust III, Trust IV, Trust V and Trust VI issued to the public trust securities in the face amounts of $400 million, $275 million, $325 million, $300 million and $475 million (cumulative, liquidation amounts of $25 per share), respectively, and $10,000 of common stock each to SCE. The trusts invested the proceeds of these trust securities in Series G, Series H, Series J, Series K and Series L Preference Stock issued by SCE in the principal amounts of $400 million, $275 million, $325 million, $300 million and $475 million (cumulative, $2,500 per share liquidation values), respectively, which have substantially the same payment terms as the respective trust securities. The Series G, Series H, Series J, Series K and Series L Preference Stock and the corresponding trust securities do not have a maturity date. Upon any redemption of any shares of the Series G, Series H, Series J, Series K or Series L Preference Stock, a corresponding dollar amount of trust securities will be redeemed by the applicable trust (see Note 14 for further information). The applicable trust will make distributions at the same rate and on the same dates on the applicable series of trust securities if and when the SCE board of directors declares and makes dividend payments on the related Preference Stock. The applicable trust will use any dividends it receives on the related Preference Stock to make its corresponding distributions on the applicable series of trust securities. If SCE does not make a dividend payment to any of these trusts, SCE would be prohibited from paying dividends on its common stock. SCE has fully and unconditionally guaranteed the payment of the trust securities and trust distributions, if and when SCE pays dividends on the related Preference Stock. The Trust II, Trust III, Trust IV, Trust V and Trust VI balance sheets as of December 31, 2022 and 2021, consisted of investments of $220 million, $275 million, $325 million, $300 million and $475 million in the Series G, Series H, Series J, Series K and Series L Preference Stock, respectively, $220 million, $275 million, $325 million, $300 million and $475 million of trust securities, respectively, and $10,000 each of common stock. The following table provides a summary of the trusts' income statements: Years ended December 31, (in millions) Trust II Trust III Trust IV Trust V Trust VI 2022 Dividend income $ 11 $ 16 $ 17 $ 16 $ 24 Dividend distributions 11 16 17 16 24 2021 Dividend income $ 20 $ 16 $ 17 $ 16 $ 24 Dividend distributions 20 16 17 16 24 2020 Dividend income $ 20 $ 16 $ 17 $ 16 $ 24 Dividend distributions 20 16 17 16 24

Fair Value Measurements

Fair Value Measurements	12 Months Ended
Fair Value Measurements	Dec. 31, 2022
Fair Value Measurements
Fair Value Measurements	Note 4. Recurring Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (referred to as an "exit price"). Fair value of an asset or liability considers assumptions that market participants would use in pricing the asset or liability, including assumptions about nonperformance risk. As of December 31, 2022 and 2021, nonperformance risk was not material for Edison International and SCE. Assets and liabilities are categorized into a three-level fair value hierarchy based on valuation inputs used to determine fair value. Level 1 – The fair value of Edison International's and SCE's Level 1 assets and liabilities is determined using unadjusted quoted prices in active markets that are available at the measurement date for identical assets and liabilities. This level includes exchange-traded equity securities, U.S. treasury securities, mutual funds and money market funds. Level 2 – Edison International's and SCE's Level 2 assets and liabilities include fixed income securities, primarily consisting of U.S. government and agency bonds, municipal bonds and corporate bonds, and over-the-counter derivatives. The fair value of fixed income securities is determined using a market approach by obtaining quoted prices for similar assets and liabilities in active markets and inputs that are observable, either directly or indirectly, for substantially the full term of the instrument. The fair value of SCE's over-the-counter derivative contracts is determined using an income approach. SCE uses standard pricing models to determine the net present value of estimated future cash flows. Inputs to the pricing models include forward published or posted clearing prices from an exchange (Intercontinental Exchange) for similar instruments and discount rates. A primary price source that best represents trade activity for each market is used to develop observable forward market prices in determining the fair value of these positions. Broker quotes, prices from exchanges or comparison to executed trades are used to validate and corroborate the primary price source. These price quotations reflect mid-market prices (average of bid and ask) and are obtained from sources believed to provide the most liquid market for the commodity. Level 3 – The fair value of SCE's Level 3 assets and liabilities is determined using the income approach through various models and techniques that require significant unobservable inputs. This level includes derivative contracts that trade infrequently such as congestion revenue rights ("CRRs"). Edison International Parent and Other does not have any Level 3 assets and liabilities. Assumptions are made in order to value derivative contracts in which observable inputs are not available. In circumstances where fair value cannot be verified with observable market transactions, it is possible that a different valuation model could produce a materially different estimate of fair value. Modeling methodologies, inputs, and techniques are reviewed and assessed as markets continue to develop and more pricing information becomes available and the fair value is adjusted when it is concluded that a change in inputs or techniques would result in a new valuation that better reflects the fair value of those derivative contracts. See Note 6 for a discussion of derivative instruments. SCE The following table sets forth assets and liabilities of SCE that were accounted for at fair value by level within the fair value hierarchy: December 31, 2022 Netting and (in millions) Level 1 Level 2 Level 3 Collateral 1 Total Assets at fair value Derivative contracts $ — 392 67 (218) $ 241 Money market funds and other 647 22 — — 669 Nuclear decommissioning trusts: Stocks 2 1,610 — — — 1,610 Fixed Income 3 941 1,281 — — 2,222 Short-term investments, primarily cash equivalents 137 64 — — 201 Subtotal of nuclear decommissioning trusts 4 2,688 1,345 — — 4,033 Total assets 3,335 1,759 67 (218) 4,943 Liabilities at fair value Derivative contracts — 116 4 (119) 1 Total liabilities — 116 4 (119) 1 Net assets $ 3,335 $ 1,643 $ 63 $ (99) $ 4,942 December 31, 2021 Netting and (in millions) Level 1 Level 2 Level 3 Collateral 1 Total Assets at fair value Derivative contracts $ — $ 26 $ 49 $ (31) $ 44 Money market funds and other 230 23 — — 253 Nuclear decommissioning trusts: Stocks 2 1,972 — — — 1,972 Fixed Income 3 1,083 1,607 — — 2,690 Short-term investments, primarily cash equivalents 102 125 — — 227 Subtotal of nuclear decommissioning trusts 4 3,157 1,732 — — 4,889 Total assets 3,387 1,781 49 (31) 5,186 Liabilities at fair value Derivative contracts — 42 5 (47) — Total liabilities — 42 5 (47) — Net assets $ 3,387 $ 1,739 $ 44 $ 16 $ 5,186 1 Represents the netting of assets and liabilities under master netting agreements and cash collateral. 2 Approximately 74% and 75% of SCE's equity investments were in companies located in the United States at December 31, 2022 and 2021, respectively. 3 Includes corporate bonds, which were diversified by the inclusion of collateralized mortgage obligations and other asset backed securities of $49 million and $30 million at December 31, 2022 and 2021, respectively. 4 Excludes net payables of $85 million and $19 million at December 31, 2022 and 2021, respectively, which consist of interest and dividend receivables as well as receivables and payables related to SCE's pending securities sales and purchases. SCE Fair Value of Level 3 The following table sets forth a summary of changes in SCE's fair value of Level 3 net derivative assets and liabilities: Years ended December 31, (in millions) 2022 2021 Fair value of net assets at beginning of period $ 44 $ 108 Sales (8) (2) Settlements (54) (63) Total realized/unrealized gains 1 81 1 Fair value of net assets at end of period $ 63 $ 44 1 Due to regulatory mechanisms, SCE's realized and unrealized gains and losses are recorded as regulatory assets and liabilities. There were no material transfers into or out of Level 3 during 2022 and 2021. The following table sets forth SCE's valuation techniques and significant unobservable inputs used to determine fair value for significant Level 3 assets and liabilities: Fair Value Significant Weighted (in millions) Valuation Unobservable Range Average Assets Liabilities Technique Input (per MWh) (per MWh) Congestion revenue rights December 31, 2022 $ 67 $ 4 Auction prices CAISO CRR auction prices $(7.91) - $3,856.67 $ 1.64 December 31, 2021 49 5 Auction prices CAISO CRR auction prices (18.87) - 43.03 1.46 Level 3 Fair Value Uncertainty For CRRs, increases or decreases in CAISO auction prices would result in higher or lower fair value, respectively. Nuclear Decommissioning Trusts SCE's nuclear decommissioning trust investments include equity securities, U.S. treasury securities and other fixed income securities. Equity and treasury securities are classified as Level 1 as fair value is determined by observable market prices in active or highly liquid and transparent markets. The remaining fixed income securities are classified as Level 2. The fair value of these financial instruments is based on evaluated prices that reflect significant observable market information such as reported trades, actual trade information of similar securities, benchmark yields, broker/dealer quotes, issuer spreads, bids, offers and relevant credit information. There are no securities classified as Level 3 in the nuclear decommissioning trusts. SCE's investment policies and CPUC requirements place limitations on the types and investment grade ratings of the securities that may be held by the nuclear decommissioning trust funds. These policies restrict the trust from holding alternative investments and limit the trust funds' exposures to investments in highly illiquid markets. With respect to equity and fixed income securities, the trustee obtains prices from third-party pricing services which SCE is able to independently corroborate as described below. The trustee monitors prices supplied by pricing services, including reviewing prices against defined parameters' tolerances and performs research and resolves variances beyond the set parameters. SCE corroborates the fair values of securities by comparison to other market-based price sources obtained by SCE's investment managers. Differences outside established thresholds are followed-up with the trustee and resolved. For each reporting period, SCE reviews the trustee determined fair value hierarchy and overrides the trustee level classification when appropriate. Edison International Parent and Other Edison International Parent and Other assets measured at fair value and classified as Level 1 consisted of equity investments of $5 million and $12 million and money market funds of $137 million and $99 million at December 31, 2022 and December 31, 2021, respectively. Assets measured at fair value and classified as Level 2 consisted of short-term investments of $2 million and $6 million at December 31, 2022 and December 31, 2021, respectively. Fair Value of Debt Recorded at Carrying Value The carrying value and fair value of Edison International's and SCE's long-term debt (including current portion of long-term debt) are as follows: December 31, 2022 December 31, 2021 Carrying Fair Carrying Fair (in millions) Value 1 Value 2 Value 1 Value 2 Edison International $ 29,639 $ 26,824 $ 25,247 $ 27,718 SCE 26,258 23,469 22,110 24,375 1 2 .

Debt and Credit Agreements

Debt and Credit Agreements	12 Months Ended
Debt and Credit Agreements	Dec. 31, 2022
Debt and Credit Agreements
Debt and Credit Agreements	Note 5. Long-Term Debt The following table summarizes long-term debt (rates and terms are as of December 31, 2022) of Edison International and SCE: December 31, (in millions) 2022 2021 Edison International Parent and Other: Debentures and notes: 2023 – 2029 (2.95% to 6.95%) $ 3,400 $ 3,150 Current portion of long-term debt (400) (700) Unamortized debt discount/premium and issuance costs, net (19) (13) Total Edison International Parent and Other 2,981 2,437 SCE: First and refunding mortgage bonds: 2023 – 2052 (0.70% to 6.05%) 23,900 20,314 Pollution-control bonds: 2023 – 2035 (1.45% to 2.63%) 752 752 Debentures and notes: 2029 – 2053 (5.06% to 6.65%) 306 306 Senior secured recovery bonds 1 2028 – 2046 (0.86% to 3.24%) 849 333 Other long-term debt 2 600 518 Current portion of long-term debt (2,214) (377) Unamortized debt discount/premium and issuance costs, net (149) (113) Total SCE 24,044 21,733 Total Edison International $ 27,025 $ 24,170 1 The senior secured recovery bonds are payable only from and secured by the Recovery Property at SCE Recovery Funding LLC, and do not constitute a debt or other legal obligation of, or interest in, SCE or any of its affiliates, except for SCE Recovery Funding LLC. For further details, see Note 3. 2 2022 amount represents a term loan due in 2024 with an interest rate of adjusted term secured overnight financing rate ("SOFR") plus 0.90% . 2021 amount represent short-term obligations refinanced on a long-term basis subsequent to December 31, 2021. Edison International and SCE long-term debt maturities over the next five years are as follows: Edison (in millions) International SCE 2023 $ 2,614 $ 2,214 2024 2,680 2,180 2025 2,030 1,230 2026 381 381 2027 1,981 1,381 Liens and Security Interests Almost all of SCE's properties are subject to a trust indenture lien. SCE has pledged first and refunding mortgage bonds as collateral for borrowed funds obtained from pollution-control bonds issued by government agencies. SCE has a debt covenant that requires a debt to total capitalization ratio to be less than or equal to 0.65 to 1. At December 31, 2022, SCE's debt to total capitalization ratio was 0.56 to 1 and was in compliance with all other financial covenants that affect access to capital. Edison International Parent's credit facility requires a consolidated debt to total capitalization ratio as defined in the applicable agreements of less than or equal to 0.70 to 1. At December 31, 2022, Edison International consolidated debt to total capitalization ratio was 0.64 to 1. Credit Agreements and Short-Term Debt The following table summarizes the status of the credit facilities at December 31, 2022: (in millions, except for rates) Termination SOFR Outstanding Outstanding Amount Borrower date plus (bps) Commitment borrowings letters of credit available Edison International Parent 1, 3 May 2026 128 $ 1,500 $ 90 $ — $ 1,410 SCE 2, 3 May 2026 108 3,350 195 431 2,724 Total Edison International $ 4,850 $ 285 $ 431 $ 4,134 1 At December 31, 2022, Edison International Parent had $90 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 4.92% . At December 31, 2021 Edison International Parent did no t have any outstanding commercial paper. 2 At December 31, 2022 and December 31, 2021, SCE had $195 million and $601 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 5.20% and 0.45% , respectively. 3 Proceeds are used to support commercial paper borrowings and general corporate purposes. The aggregate maximum principal amount under the SCE and Edison International Parent revolving credit facilities may be increased up to $4.0 billion and $2.0 billion, respectively, provided that additional lender commitments are obtained. Short-term Term Loans As of December 31, 2022, Edison International Parent had outstanding term loans of $600 million due in April 2023 and $400 million due in November 2023, each bearing interest at either an adjusted term SOFR plus 0.70% and 0.95% , respectively, or a base rate with no applicable margin. The term loan proceeds were used for general corporate purposes. As of December 31, 2022, SCE had a $730 million outstanding balance on its green term loan agreement due in May 2023 and bears interest at an adjusted term SOFR plus 0.55% .

Derivative Instruments

Derivative Instruments	12 Months Ended
Derivative Instruments	Dec. 31, 2022
Derivative Instruments
Derivative Instruments	Note 6. Derivative financial instruments are used to manage exposure to commodity price risk. These risks are managed in part by entering into forward commodity transactions, including options, swaps and futures. To mitigate credit risk from counterparties in the event of nonperformance, master netting agreements are used whenever possible and counterparties may be required to pledge collateral depending on the creditworthiness of each counterparty and the risk associated with the transaction. Commodity Price Risk Commodity price risk represents the potential impact that can be caused by a change in the market value of a particular commodity. SCE's electricity price exposure arises from energy purchased from and sold to wholesale markets as a result of differences between SCE's load requirements and the amount of energy delivered from its generating facilities and PPAs. SCE's natural gas price exposure arises from natural gas purchased for the Mountainview power plants, Peaker plants and Qualifying Facilities contracts where pricing is based on a monthly natural gas index and PPAs in which SCE has agreed to provide the natural gas needed for generation, referred to as tolling arrangements. Credit and Default Risk Credit and default risk represent the potential impact that can be caused if a counterparty were to default on its contractual obligations and SCE would be exposed to spot markets for buying replacement power or selling excess power. In addition, SCE would be exposed to the risk of non-payment of accounts receivable, primarily related to the sales of excess power and realized gains on derivative instruments. Certain power and gas contracts contain master netting agreements or similar agreements, which generally allow counterparties subject to the agreement to offset amounts when certain criteria are met, such as in the event of default. The objective of netting is to reduce credit exposure. Additionally, to reduce SCE's risk exposures counterparties may be required to pledge collateral depending on the creditworthiness of each counterparty and the risk associated with the transaction. Certain power and gas contracts contain a provision that requires SCE to maintain an investment grade rating from the major credit rating agencies that have credit ratings for SCE, referred to as a credit-risk-related contingent feature. If SCE's credit rating were to fall below investment grade, SCE may be required to post additional collateral to cover derivative liabilities and the related outstanding payables. The net fair value of all derivative liabilities with these credit-risk-related contingent features was less than $1 million as of December 31, 2022 and 2021, for which SCE posted collateral of $24 million and no collateral to its counterparties for its derivative liabilities and related outstanding payables as of December 31, 2022, and 2021, respectively. If the credit-risk-related contingent features underlying these agreements were triggered on December 31, 2022, SCE would be required to post $58 million of collateral, most of which is related to outstanding payables. Fair Value of Derivative Instruments SCE presents its derivative assets and liabilities on a net basis on its consolidated balance sheets when subject to master netting agreements or similar agreements. Derivative positions are also offset against margin and cash collateral deposits. In addition, SCE has provided collateral in the form of letters of credit. Collateral requirements can vary depending upon the level of unsecured credit extended by counterparties, changes in market prices relative to contractual commitments and other factors. See Note 4 for a discussion of fair value of derivative instruments. The following table summarizes the gross and net fair values of SCE's commodity derivative instruments: December 31, 2022 Derivative Assets Derivative Liabilities (in millions) Short-Term 1 Long-Term Subtotal Short-Term 3 Long-Term Subtotal Net Assets Commodity derivative contracts Gross amounts recognized $ 459 $ — $ 459 $ 120 $ — $ 120 $ 339 Gross amounts offset in the consolidated balance sheets (119) — (119) (119) — (119) — Cash collateral received 4 (99) (99) — (99) Net amounts presented in the consolidated balance sheets $ 241 $ — $ 241 $ 1 $ — $ 1 $ 240 December 31, 2021 Derivative Assets Derivative Liabilities (in millions) Short-Term 1 Long-Term 2 Subtotal Short-Term Long-Term Subtotal Net Assets Commodity derivative contracts Gross amounts recognized $ 70 $ 6 $ 76 $ 46 $ 2 $ 48 $ 28 Gross amounts offset in the consolidated balance sheets (30) (2) (32) (30) (2) (32) — Cash collateral posted 4 — — — (16) — (16) 16 Net amounts presented in the consolidated balance sheets $ 40 $ 4 $ 44 $ — $ — $ — $ 44 1 Included in "Other current assets" on Edison International's and SCE's consolidated balance sheets. 2 Included in "Other long-term assets" on Edison International's and SCE's consolidated balance sheets. 3 Included in "Other current liabilities" on Edison International's and SCE's consolidated balance sheets. 4 At December 31, 2022, SCE received cash collateral and accrued the obligation to return cash collateral totaled $99 million, all of which was offset against derivative assets. At December 31, 2021, SCE posted $65 million of cash, of which $16 million was offset against derivative liabilities and $49 million was reflected in "Other current assets" on the consolidated balance sheets. Financial Statement Impact of Derivative Instruments SCE recognizes realized gains and losses on derivative instruments as purchased power expense and expects that such gains or losses will be part of the purchased power costs recovered from customers. As a result, realized gains and losses do not affect earnings, but may temporarily affect cash flows. Due to expected future recovery from customers, unrealized gains and losses are recorded as regulatory assets and liabilities and therefore also do not affect earnings. The remaining effects of derivative activities and related regulatory offsets are reported in cash flows from operating activities in the consolidated statements of cash flows. The following table summarizes the components of SCE's economic hedging activity: Years ended December 31, (in millions) 2022 2021 2020 Realized gains $ 178 $ 200 $ 87 Unrealized gains (losses) 310 (75) 17 Notional Volumes of Derivative Instruments The following table summarizes the notional volumes of derivatives used for SCE's economic hedging activities: Economic Hedges Unit of December 31, Commodity Measure 2022 2021 Electricity options, swaps and forwards GWh 1,022 1,869 Natural gas options, swaps and forwards Bcf 42 58 Congestion revenue rights GWh 44,028 33,216

Revenue

Revenue	12 Months Ended
Revenue	Dec. 31, 2022
Revenue
Revenue	Note 7. SCE's revenue is disaggregated by two revenue sources: ● Earning activities – representing revenue authorized by the CPUC and FERC, which is intended to provide SCE a reasonable opportunity to recover its costs and earn a return on its net investment in generation, transmission and distribution assets. The annual revenue requirements are comprised of authorized operation and maintenance costs, depreciation, taxes and a return consistent with the capital structure. Also, included in earnings activities are revenue or penalties related to incentive mechanisms, other operating revenue and regulatory charges or disallowances. ● Cost-recovery activities – representing CPUC- and FERC- authorized balancing accounts, which allow for recovery of specific project or program costs, subject to a reasonableness review or compliance with upfront standards as well as non-bypassable rates collected for SCE Recovery Funding LLC. Cost-recovery activities include rates which provide recovery, subject to a reasonableness review of, among other things, fuel costs, purchased power costs, public purpose related-program costs (including energy efficiency and demand-side management programs), certain operation and maintenance expenses, and repayment of bonds and financing costs of SCE Recovery Funding LLC. SCE earns no return on these activities. The following table is a summary of SCE's revenue: 2022 2021 2020 Cost- Cost- Cost- Earning Recovery Total Earning Recovery Total Earning Recovery Total (in millions) Activities Activities Consolidated Activities Activities Consolidated Activities Activities Consolidated Revenues from contracts with customers 1,2 $ 8,327 8,433 $ 16,760 $ 7,523 $ 6,824 14,347 $ 6,920 $ 5,539 $ 12,459 Alternative revenue programs and other operating revenue 3 681 (269) 412 349 178 527 548 539 1,087 Total operating revenue $ 9,008 $ 8,164 $ 17,172 $ 7,872 $ 7,002 $ 14,874 $ 7,468 $ 6,078 $ 13,546 1 SCE recorded CPUC revenue based on an annual revenue requirement set by a methodology established in the GRC proceeding and FERC revenue authorized through a formula rate. For further information, see Note 1. 2 At December 31, 2022 and 2021, SCE's receivables related to contracts from customers were $2.3 billion and $2.3 billion, which included accrued unbilled revenue of $638 million and $794 million, respectively. 3 Includes differences between amounts billed and authorized levels for both the CPUC and FERC. Deferred Revenue In July 2021, Morongo Transmission LLC ("Morongo") paid SCE $400 million for the use of a portion of the West of Devers transmission line transfer capability for a period of 30 years. SCE recognized the entire proceeds as deferred revenue and is amortizing deferred revenue from the use of the transfer capability over the 30-year term on a straight-line basis resulting in revenue of $13 million per year. As of December 31, 2022, the deferred revenue was $381 million, of which $13 million and $368 million are included in "Other current liabilities" and "Other deferred credits and other long-term liabilities," respectively, on SCE's consolidated balance sheets. For the years ended December 31, 2022 and 2021, SCE has recognized revenue of $13 million and $6 million, respectively.

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2022
Income Taxes
Income Taxes	Note 8. Current and Deferred Taxes The components of income tax (benefit) expense by location of taxing jurisdiction are: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Current: Federal $ 2 $ — $ 13 $ — $ — $ 12 State 13 (179) (22) 2 (45) (26) 15 (179) (9) 2 (45) (14) Deferred: Federal (103) 83 (230) (44) 83 (207) State (74) (40) (66) (67) (21) (56) (177) 43 (296) (111) 62 (263) Total $ (162) $ (136) $ (305) $ (109) $ 17 $ (277) The components of net accumulated deferred income tax liability are: Edison International SCE December 31, (in millions) 2022 2021 2022 2021 Deferred tax assets: Property $ 859 $ 856 $ 840 $ 835 Wildfire-related 1 458 558 457 558 Nuclear decommissioning trust assets in excess of nuclear ARO liability 321 517 321 517 Loss and credit carryforwards 2 3,479 3,078 2,157 1,697 Regulatory balances 641 652 641 652 Pension and postretirement benefits other than pensions, net 130 153 26 30 Leases 406 543 406 543 Other 162 165 135 179 Sub-total 6,456 6,522 4,983 5,011 Less: valuation allowance 3 39 44 — 6 Total 6,417 6,478 4,983 5,005 Deferred tax liabilities: Property 10,091 9,645 10,078 9,633 Regulatory balances 1,462 1,242 1,462 1,242 Nuclear decommissioning trust assets 321 517 321 517 Leases 406 543 406 543 Other 225 207 200 186 Total 12,505 12,154 12,467 12,121 Accumulated deferred income tax liability, net 4 $ 6,088 $ 5,676 $ 7,484 $ 7,116 1 Relates to accrued estimated losses for wildfire-related claims, net of expected recoveries from insurance and FERC customers, and contributions to the Wildfire Insurance Fund. For further information, see Note 12 and Note 1. 2 As of December 31, 2022, unrecognized tax benefits of $310 million and $254 million for Edison International and SCE, respectively, are presented net against the deferred tax asset for the loss and tax credit carryforwards. As of December 31, 2021, the unrecognized tax benefits netted against deferred tax assets and tax credit carryforwards were $277 million and $221 million for Edison International and SCE, respectively. 3 As of December 31, 2022, Edison International has recorded a valuation allowance on deferred tax assets which are estimated to expire before being utilized. The valuation allowance for Edison International includes $35 million for non-California state net operating loss carryforwards and $4 million for California capital losses generated from sale of SoCore Energy in 2018. As of December 31, 2021, the valuation allowance on deferred tax assets which are estimated to expire before being utilized for Edison International includes $33 million for non-California state net operating loss carryforwards, $4 million for California capital losses generated from sale of SoCore Energy in 2018, and $7 million for federal and California charitable contribution carryover from 2017. Valuation allowance for SCE includes $6 million for federal and California charitable contribution carryover from 2017. 4 Included in "Deferred income taxes and credits" on the consolidated balance sheets. Net Operating Loss and Tax Credit Carryforwards The amounts of net operating loss and tax credit carryforwards (after-tax) are as follows: Edison International SCE December 31, 2022 Loss Credit Loss Credit (in millions) Carryforwards Carryforwards Carryforwards Carryforwards Expire in 2023 $ 10 $ — $ 6 $ — Expire between 2024 to 2027 26 — 25 — Expire between 2029 to 2042 1,670 544 870 60 No expiration date 1 1,529 10 1,450 — Total $ 3,235 $ 554 $ 2,351 $ 60 1 Under the Tax Cut and Jobs Act signed into law on December 22, 2017 ("Tax Reform"), that it was an event vs. net operating losses generated after December 31, 2017 can carryforward indefinitely. Edison International consolidates for federal income tax purposes, but not for financial accounting purposes, a group of wind projects referred to as Capistrano Wind. The amount of net operating loss and tax credit carryforwards recognized as part of deferred income taxes includes $121 million and $223 million related to Capistrano Wind for 2022 and 2021, respectively. The change in Capistrano's carryforwards is primarily due to a sale of the Capistrano Wind projects consummated in the third quarter of 2022. The tax impact of the sale and cancellation of debt is approximately $125 million. The tax attributes not utilized as of December 31, 2022 will be available for the Edison International consolidated group to utilize in the future. When the remaining Capistrano tax attributes are used in the future by Edison International, payments will be made to those entities under a tax allocation agreement. Under the tax allocation agreement, Edison International has recorded a corresponding liability as part of other long-term liabilities related to its obligation to make payments to Capistrano Wind when these tax benefits are realized. Effective Tax Rate The table below provides a reconciliation of income tax expense computed at the federal statutory income tax rate to the income tax provision: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Income from operations before income taxes $ 662 $ 789 $ 566 $ 845 $ 952 $ 665 Provision for income tax at federal statutory rate of 21% 139 166 119 177 200 140 Increase (decrease) in income tax from: State tax, net of federal benefit (70) (47) (61) (57) (33) (52) Property-related (219) (233) (320) (219) (233) (320) Change related to uncertain tax position 1 — (147) (15) — (37) (19) Wildfire related charges 2 — 31 — — 31 — Average rate assumption method ("ARAM") adjustment 3 — 87 — — 87 — Corporate-owned life insurance cash surrender value (9) (8) (8) (9) (8) (8) Other (3) 15 (20) (1) 10 (18) Total income tax (benefit) expense $ (162) $ (136) $ (305) $ (109) $ 17 $ (277) Effective tax rate (24.5) % (17.2) % (53.9) % (12.9) % 1.8 % (41.7) % 1 In 2021, Edison International and SCE recognized tax benefits related to a settlement with the California Franchise Tax Board "FTB" for tax years 2007 – 2012. See further discussion in Tax Disputes below. In 2020, Edison International and SCE recognized tax expense and benefit, respectively, primarily due to the re-measurement of uncertain tax positions related to the 2010 – 2012 California state tax filings currently under audit. 2 Relates to the non-tax deductible portions of the SED Agreement (as defined in Note 12). See Note 12 for further discussion under 2017/2018 Wildfire/Mudslide Events. 3 In July 2021, SCE received the IRS' response to its private letter ruling request, regarding the scope of the deferred tax normalization requirements and the computations required to comply with the average rate assumption method. As a result, SCE's estimate changed and a cumulative true-up of $87 million reduction in tax benefits was recorded in the third quarter of 2021, for the period of January 1, 2018 to June 30, 2021. The CPUC requires flow-through ratemaking treatment for the current tax benefit arising from certain property-related and other temporary differences which reverse over time. Flow-through items reduce current authorized revenue requirements in SCE's rate cases and result in a regulatory asset for recovery of deferred income taxes in future periods. The difference between the authorized amounts as determined in SCE's rate cases, adjusted for balancing and memorandum account activities, and the recorded flow-through items also result in increases or decreases in regulatory assets with a corresponding impact on the effective tax rate to the extent that recorded deferred amounts are expected to be recovered in future rates. For further information, see Note 11. Accounting for Uncertainty in Income Taxes Authoritative guidance related to accounting for uncertainty in income taxes requires an enterprise to recognize, in its financial statements, the best estimate of the impact of a tax position by determining if the weight of available evidence indicates it is more likely than not, based solely on the technical merits, that the position will be sustained upon examination. The guidance requires the disclosure of all unrecognized tax benefits, which includes both the reserves recorded for tax positions on filed tax returns and the unrecognized portion of affirmative claims. Unrecognized Tax Benefits The following table provides a reconciliation of unrecognized tax benefits: Edison International SCE (in millions) 2022 2021 2020 2022 2021 2020 Balance at January 1, $ 613 $ 679 $ 370 $ 340 $ 320 $ 282 Tax positions taken during the current year: Increases 54 53 55 54 53 56 Tax positions taken during a prior year: Increases 1 — 3 274 — 1 4 Decreases 2 (21) (118) (20) (20) (29) (22) Settlements with taxing authorities 3 — (4) — — (5) — Balance at December 31, $ 646 $ 613 $ 679 $ 374 $ 340 $ 320 1 Edison International recorded favorable tax positions in 2020 in connection with the Edison Mission Energy bankruptcy that required a revaluation of the reserve for uncertain tax positions. 2 Decrease in 2021 was related to re-measurement as a result of a settlement with the FTB for tax years 2007 – 2012. 3 In 2021, Edison International reached a settlement with the FTB for tax years 2007 – 2012. As of December 31, 2022, if recognized, $341 million of unrecognized tax benefits would impact Edison International's effective tax rate and $69 million of the unrecognized tax benefits would impact SCE's effective tax rate. Tax Disputes Tax years that remain open for examination by the IRS and FTB are 2019 – 2021 and 2013 – 2021, respectively. Accrued Interest and Penalties The total amount of accrued interest and penalties related to income tax liabilities are: Edison International SCE December 31, (in millions) 2022 2021 2022 2021 Accrued interest and penalties $ — $ — $ 23 $ 20 The net after-tax interest and penalties recognized in income tax (benefit) expense are: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Net after-tax interest and penalties tax (benefit) expense $ — $ (41) $ 4 $ 2 $ (2) $ 6

Compensation and Benefit Plans

Compensation and Benefit Plans	12 Months Ended
Compensation and Benefit Plans	Dec. 31, 2022
Retirement Benefits [Abstract]
Compensation and Benefit Plans	Note 9. Employee Savings Plan The 401(k) defined contribution savings plan is designed to supplement employees' retirement income. The employer contributions were as follows: Edison International SCE (in millions) Years ended December 31, 2022 $ 103 $ 101 2021 97 96 2020 93 92 Pension Plans and Postretirement Benefits Other Than Pensions Pension Plans Noncontributory defined benefit pension plans (some with cash balance features) cover most employees meeting minimum service requirements. Employees hired by the participating companies on or after December 31, 2017 are no longer eligible to participate in the pension plan. In lieu of that, an additional non-contributory employer contribution is deposited into the Edison 401(k) Savings Plan. SCE recognizes pension expense for its nonexecutive plan as calculated by the actuarial method used for ratemaking. The expected contributions (all by the employer) for Edison International and SCE are approximately $35 million and $8 million, respectively, for the year ending December 31, 2023. Annual contributions made by SCE to most of SCE's pension plans are anticipated to be recovered through CPUC-approved regulatory mechanisms. The funded position of Edison International's pension is sensitive to changes in market conditions. Changes in overall interest rate levels significantly affect the company's liabilities, while assets held in the various trusts established to fund Edison International's pension are affected by movements in the equity and bond markets. Due to SCE's regulatory recovery treatment, a regulatory asset is recorded equal to the unfunded status and a regulatory liability is recorded equal to the funded status. See Note 11 for further information. Information on pension plan assets and benefit obligations for continuing and discontinued operations is shown below. Edison International SCE Years ended December 31, (in millions) 2022 2021 2022 2021 Change in projected benefit obligation Projected benefit obligation at beginning of year $ 4,171 $ 4,476 $ 3,694 $ 3,984 Service cost 120 130 115 126 Interest cost 111 103 97 92 Actuarial gain (589) (245) (503) (246) Benefits paid (289) (293) (244) (262) Projected benefit obligation at end of year $ 3,524 $ 4,171 $ 3,159 $ 3,694 Change in plan assets Fair value of plan assets at beginning of year $ 4,296 $ 4,171 $ 4,061 $ 3,940 Actual return on plan assets (575) 368 (544) 348 Employer contributions 30 50 2 35 Benefits paid (289) (293) (244) (262) Fair value of plan assets at end of year 3,462 4,296 3,275 4,061 Funded status at end of year $ (62) $ 125 $ 116 $ 367 Amounts recognized in the consolidated balance sheets consist of 1 Long-term assets $ 139 $ 384 $ 128 $ 384 Current liabilities (26) (26) (2) (2) Long-term liabilities (175) (233) (10) (15) $ (62) $ 125 $ 116 $ 367 Amounts recognized in accumulated other comprehensive loss consist of: Net loss 1 $ 17 74 8 12 Amounts recognized as a regulatory liability (139) (395) (139) (395) Accumulated benefit obligation at end of year $ 3,401 $ 3,947 $ 3,049 $ 3,491 Pension plans with plan assets in excess of an accumulated benefit obligation: Projected benefit obligation 3,524 4,171 3,159 3,694 Accumulated benefit obligation 3,401 3,947 3,049 3,491 Fair value of plan assets 3,462 4,296 3,275 4,061 Weighted average assumptions used to determine obligations at end of year: Discount rate 5.36 % 2.75 % 5.36 % 2.75 % Rate of compensation increase 4.00 % 4.00 % 4.00 % 4.00 % 1 The SCE liability excludes a long-term payable due to Edison International Parent of $93 million and $132 million at December 31, 2022 and 2021, respectively, related to certain SCE postretirement benefit obligations transferred to Edison International Parent. SCE's accumulated other comprehensive loss of $8 million and $12 million at December 31, 2022 and 2021, excludes net losses of $3 million and $32 million related to these benefits, respectively. For Edison International and SCE, respectively, the 2022 actuarial gains are primarily related to $1.0 billion and $929 million in gains from an increase in the discount rate (from 2.75% as of December 31, 2021 to 5.36% as of December 31, 2022), partially offset by $456 million and $430 million in losses from economic assumption and experience. For Edison International and SCE, respectively, the 2021 actuarial gains are primarily related to $159 million and $149 million in gains from an increase in discount rate (from 2.38% as of December 31, 2020 to 2.75% as of December 31, 2021), $69 million and $83 million in gains from valuation and experience. Net periodic pension expense components are: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Service cost $ 120 $ 130 $ 121 $ 118 $ 127 $ 119 Non-service cost (benefit) Interest cost 111 103 124 101 95 114 Expected return on plan assets (227) (222) (215) (215) (211) (203) Settlement costs 4 — — 4 — — Amortization of prior service cost — 1 2 — 1 1 Amortization of net loss 5 11 10 2 7 7 Regulatory adjustment 6 25 16 6 25 16 Total non-service benefit 1 (101) (82) (63) (102) (83) (65) Total expense recognized $ 19 $ 48 $ 58 $ 16 $ 44 $ 54 1 Included in "Other income" on Edison International's and SCE's consolidated income statements. For further details, see Note 16. Other changes in pension plan assets and benefit obligations recognized in other comprehensive income: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Net (gain) loss $ (45) $ (10) $ 11 $ (24) $ (5) $ 9 Settlement charges (4) — — (4) — — Amortization of net loss (8) (11) (10) (5) (7) (7) Total (gain) loss recognized in other comprehensive income (57) (21) 1 (33) (12) 2 Total recognized in expense and other comprehensive income $ (38) $ 27 $ 59 $ (17) $ 32 $ 56 In accordance with authoritative guidance on rate-regulated enterprises, SCE records regulatory assets and liabilities instead of charges and credits to other comprehensive income for the portion of SCE's postretirement benefit plans that are recoverable in utility rates. Edison International and SCE used the following weighted average assumptions to determine pension expense: Years ended December 31, 2022 2021 2020 Discount rate 2.75 % 2.38 % 3.11 % Rate of compensation increase 4.00 % 4.00 % 4.10 % Expected long-term return on plan assets 5.50 % 5.50 % 6.00 % Interest crediting rate for cash balance account Starting rate 3.12 % 3.03 % 3.61 % Ultimate rate 4.50 % 4.50 % 5.00 % Year ultimate rate is reached 2026 2025 2025 The following benefit payments, which reflect service rendered and expected future service, are expected to be paid: Edison (in millions) International SCE 2023 $ 310 $ 269 2024 314 274 2025 313 276 2026 321 282 2027 308 276 2028 – 2032 1,428 1,291 Postretirement Benefits Other Than Pensions ("PBOP(s)") Employees hired prior to December 31, 2017 who are retiring at or after age 55 with at least 10 years of service may be eligible for postretirement healthcare benefits. Eligibility for a company contribution toward the cost of these benefits in retirement depends on a number of factors, including the employee's years of service, age, hire date, and retirement date. Employees hired on or after December 31, 2017 are no longer eligible for retiree healthcare benefits. In lieu of those benefits, Edison International will provide a health reimbursement account of $200 per month available only after meeting certain age and service year requirements. Under the terms of the Edison International Welfare Benefit Plan ("PBOP Plan"), each participating employer (Edison International or its participating subsidiaries) is responsible for the costs and expenses of PBOP Plan benefits with respect to its employees and former employees that exceed the participants' share of contributions. A participating employer may terminate the PBOP Plan benefits with respect to its employees and former employees, as may SCE (as PBOP Plan sponsor), and, accordingly, the participants' PBOP Plan benefits are not vested benefits. The expected contributions (substantially all of which are expected to be made by SCE) for PBOP benefits are $8 million for the year ended December 31, 2023. Annual contributions related to SCE employees made to SCE plans are anticipated to be recovered through CPUC-approved regulatory mechanisms and are expected to be, at a minimum, equal to the total annual expense for these plans. SCE has three voluntary employees' beneficiary association trusts ("VEBA Trusts") that can only be used to pay for retiree health care benefits of SCE and its subsidiaries. Once funded into the VEBA Trusts, neither SCE nor Edison International can subsequently recover remaining amounts in the VEBA Trusts. Participants of the PBOP Plan do not have a beneficial interest in the VEBA Trusts. The VEBA Trust assets are sensitive to changes in market conditions. Changes in overall interest rate levels significantly affect the company's liabilities, while assets held in the various trusts established to fund Edison International's other postretirement benefits are affected by movements in the equity and bond markets. Due to SCE's regulatory recovery treatment, the funded status is offset by a regulatory liability. Information on PBOP Plan assets and benefit obligations is shown below: Edison International SCE Years ended December 31, (in millions) 2022 2021 2022 2021 Change in benefit obligation Benefit obligation at beginning of year $ 1,904 $ 2,073 $ 1,895 $ 2,064 Service cost 34 40 34 40 Interest cost 56 52 55 52 Actuarial gain (598) (190) (596) (190) Plan participants' contributions 29 29 29 29 Benefits paid (94) (100) (94) (100) Benefit obligation at end of year $ 1,331 $ 1,904 $ 1,323 $ 1,895 Change in plan assets Fair value of plan assets at beginning of year $ 2,772 $ 2,717 $ 2,772 $ 2,717 Actual return on assets (527) 119 (527) 119 Employer contributions 7 7 7 7 Plan participants' contributions 29 29 29 29 Benefits paid (94) (100) (94) (100) Fair value of plan assets at end of year 2,187 2,772 2,187 2,772 Funded status at end of year $ 856 $ 868 $ 864 $ 877 Amounts recognized in the consolidated balance sheets consist of: Long-term assets $ 871 $ 885 $ 871 $ 885 Current liabilities (8) (8) (7) (8) Long-term liabilities (7) (9) — — $ 856 $ 868 $ 864 $ 877 Amounts recognized in accumulated other comprehensive loss consist of: Net (gain)/loss $ (2) $ 1 $ — $ — Amounts recognized as a regulatory liability (867) (886) (867) (886) Weighted average assumptions used to determine obligations at end of year: Discount rate 5.43 % 2.95 % 5.43 % 2.95 % Assumed health care cost trend rates: Rate assumed for following year 6.75 % 6.25 % 6.75 % 6.25 % Ultimate rate 5.00 % 5.00 % 5.00 % 5.00 % Year ultimate rate reached 2029 2029 2029 2029 For Edison International and SCE, the 2022 actuarial gains are primarily related to $546 million and $543 million in gains from an increase in the discount rate (from 2.95% as of December 31, 2021 to 5.43% as of December 31, 2022), respectively. For both Edison International and SCE, the 2021 actuarial gains are primarily related to $113 million in gains from valuation and experience and $83 million in gains from an increase in the discount rate (from 2.67% as of December 31, 2020 to 2.95% as of December 31, 2021). Net periodic PBOP expense components are: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Service cost $ 34 $ 40 $ 38 $ 34 $ 40 $ 37 Non-service cost (benefit) Interest cost 56 52 63 55 52 63 Expected return on plan assets (97) (106) (119) (97) (106) (119) Amortization of prior service cost (2) (1) (1) (2) (1) (1) Amortization of net gain (45) (35) (29) (45) (36) (29) Regulatory adjustment 55 51 49 55 51 49 Total non-service benefit 1 (33) (39) (37) (34) (40) (37) Total expense $ 1 $ 1 $ 1 $ — $ — $ — 1 Included in "Other income" on Edison International's and SCE's consolidated income statements. For further details, see Note 16. In accordance with authoritative guidance on rate-regulated enterprises, SCE records regulatory assets and liabilities instead of charges and credits to other comprehensive income (loss) for the portion of SCE's postretirement benefit plans that are recoverable in utility rates. Edison International and SCE used the following weighted average assumptions to determine PBOP expense: Years ended December 31, 2022 2021 2020 Discount rate 2.95 % 2.67 % 3.32 % Expected long-term return on plan assets 3.50 % 4.00 % 4.90 % Assumed health care cost trend rates: Current year 6.25 % 6.50 % 6.50 % Ultimate rate 5.00 % 5.00 % 5.00 % Year ultimate rate reached 2029 2029 2029 The following benefit payments (net of plan participants' contributions) are expected to be paid: Edison (in millions) International SCE 2023 $ 78 $ 78 2024 81 80 2025 82 82 2026 84 84 2027 86 85 2028 – 2032 450 447 Plan Assets Description of Pension and Postretirement Benefits Other than Pensions Investment Strategies The investment of plan assets is overseen by a fiduciary investment committee. Plan assets are invested using a combination of asset classes and may have active and passive investment strategies within asset classes. Target allocations for 2022 pension plan assets were 19.1% for U.S. equities, 10.9% for non-U.S. equities, 55% for fixed income and 15% for opportunistic and/or alternative investments. Target allocations for 2022 PBOP plan assets (except for Represented VEBA which is 95% for fixed income and 5% for U.S. and non-U.S. equities) are 44% for U.S. and non-U.S. equities, 50% for fixed income and 6% for opportunistic and/or alternative investments. Edison International employs multiple investment management firms. Investment managers within each asset class cover a range of investment styles and approaches. Risk is managed through diversification among multiple asset classes, managers, styles and securities. Plan asset classes and individual manager performances are measured against targets. Edison International also monitors the stability of its investment managers' organizations. Allowable investment types under CPUC investment guidelines include: ● United States equities: common and preferred stocks of large, medium, and small companies which are predominantly United States-based. ● Non-United States equities: equity securities issued by companies domiciled outside the United States and in depository receipts which represent ownership of securities of non-United States companies. ● Fixed income: fixed income securities issued or guaranteed by the United States government, non-United States governments, government agencies and instrumentalities including municipal bonds, mortgage backed securities and corporate debt obligations. A portion of the fixed income positions may be held in debt securities that are below investment grade. ● Opportunistic, alternative and other investments: Opportunistic investments in short to intermediate term market opportunities. Investments may have fixed income and/or equity characteristics and may be either liquid or illiquid. Alternative investments are limited partnerships that invest in non-publicly traded entities. Other investments are diversified among multiple asset classes such as global equity, fixed income currency and commodities markets. Investments are made in liquid or illiquid instruments within and across markets. The investment returns are expected to approximate the plans' expected investment returns. Asset class portfolio weights are permitted to range within plus or minus 5%. Where approved by the fiduciary investment committee, futures contracts are used for portfolio rebalancing and to reallocate portfolio cash positions. Where authorized, a few of the plans' investment managers employ limited use of derivatives, including futures contracts, options, options on futures and interest rate swaps in place of direct investment in securities to gain efficient exposure to markets. Derivatives are not used to leverage the plans or any portfolios. Determination of the Expected Long-Term Rate of Return on Assets The overall expected long-term rate of return on assets assumption is based on the long-term target asset allocation for plan assets and capital markets return forecasts for asset classes employed. A portion of the PBOP trust asset returns is subject to taxation, so the expected long-term rate of return for these assets is determined on an after-tax basis. Capital Markets Return Forecasts SCE's capital markets return forecast methodologies primarily use a combination of historical market data, current market conditions, proprietary forecasting expertise, complex models to develop asset class return forecasts and a building block approach. The forecasts are developed using variables such as real risk-free interest, inflation and asset class specific risk premiums. For equities, the risk premium is based on an assumed average equity risk premium of 5% over cash. The forecasted return on private equity and opportunistic investments are estimated at a 4% premium above public equity, reflecting a premium for higher volatility and lower liquidity. For fixed income, the risk premium is based on a comprehensive modeling of credit spreads. Fair Value of Plan Assets The PBOP Plan and the Southern California Edison Company Retirement Plan Trust assets include investments in equity securities, U.S. treasury securities, other fixed-income securities, common/collective funds, mutual funds, other investment entities, foreign exchange and interest rate contracts, and partnership/joint ventures. Equity securities, U.S. treasury securities, mutual and money market funds are classified as Level 1 as fair value is determined by observable, unadjusted quoted market prices in active or highly liquid and transparent markets. The fair value of the underlying investments in equity mutual funds are based on stock-exchange prices. The fair value of the underlying investments in fixed-income mutual funds and other fixed income securities including municipal bonds are based on evaluated prices that reflect significant observable market information such as reported trades, actual trade information of similar securities, benchmark yields, broker/dealer quotes, issuer spreads, bids, offers and relevant credit information. Foreign exchange and interest rate contracts are classified as Level 2 because the values are based on observable prices but are not traded on an exchange. Futures contracts trade on an exchange and therefore are classified as Level 1. No investment is classified as Level 3 as of December 31, 2022 and 2021. Common/collective funds and partnerships are measured at fair value using the net asset value per share ("NAV") and have not been classified in the fair value hierarchy. Other investment entities are valued similarly to common/collective funds and are therefore classified as NAV. The Level 1 registered investment companies are either mutual or money market funds. The remaining funds in this category are readily redeemable and classified as NAV and are discussed further at note 8 to the pension plan trust investments table below. Edison International reviews the process/procedures of both the pricing services and the trustee to gain an understanding of the inputs/assumptions and valuation techniques used to price each asset type/class. The trustee and Edison International's validation procedures for pension and PBOP equity and fixed income securities are the same as the nuclear decommissioning trusts. For further discussion, see Note 4. The values of Level 1 mutual and money market funds are publicly quoted. The trustees obtain the values of common/collective and other investment funds from the fund managers. The values of partnerships are based on partnership valuation statements updated for cash flows. SCE's investment managers corroborate the trustee fair values. Pension Plan The following table sets forth the investments for Edison International and SCE that were accounted for at fair value as of December 31, 2022 and December 31, 2021, respectively, by asset class and level within the fair value hierarchy: December 31, 2022 (in millions) Level 1 Level 2 NAV 1 Total U.S. government and agency securities 2 $ 281 $ 293 $ — $ 574 Corporate stocks 3 227 3 — 230 Corporate bonds 4 — 973 — 973 Common/collective funds 5 — — 658 658 Partnerships/joint ventures 6 — — 613 613 Other investment entities 7 — — 63 63 Registered investment companies 8 206 — 159 365 Interest-bearing cash 14 — — 14 Other — 48 7 55 Total $ 728 $ 1,317 $ 1,500 $ 3,545 Receivables and payables, net (83) Combined net plan assets available for benefits 3,462 SCE's share of net plan assets $ 3,275 December 31, 2021 (in millions) Level 1 Level 2 NAV 1 Total U.S. government and agency securities 2 $ 217 $ 918 $ — $ 1,135 Corporate stocks 3 466 4 — 470 Corporate bonds 4 — 815 — 815 Common/collective funds 5 — — 964 964 Partnerships/joint ventures 6 — — 688 688 Other investment entities 7 — — 110 110 Registered investment companies 8 57 — 31 88 Interest-bearing cash 8 — — 8 Other — 45 — 45 Total $ 748 $ 1,782 $ 1,793 $ 4,323 Receivables and payables, net (27) Combined net plan assets available for benefits 4,296 SCE's share of net plan assets $ 4,061 1 These investments are measured at fair value using the net asset value per share practical expedient and have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the net plan assets available for benefits. 2 Level 1 U.S. government and agency securities are U.S. treasury bonds and notes. Level 2 primarily relates to the Federal National Mortgage Association and the Federal Home Loan Mortgage Corporation. 3 Corporate stocks are diversified. At December 31, 2022 and 2021, respectively, performance for actively managed separate accounts is primarily benchmarked against the Russell Indexes ( 36% and 44% ) and Morgan Stanley Capital International (MSCI) index ( 64% and 56% ). 4 Corporate bonds are diversified. At December 31, 2022 and 2021, respectively, this category includes $67 million and $61 million for collateralized mortgage obligations and other asset backed securities. 5 The common/collective assets are invested in equity index funds that seek to track performance of the Standard and Poor's 500 Index ( 41% at both December 31, 2022 and 2021). 10% are invested on Russell 1000 indexes at December 31, 2021. In addition, at December 31, 2022 and 2021, respectively, 46% and 38% of the assets in this category are in index funds which seek to track performance in the MSCI All Country World Index ex-US and 11% and 9% of this category are in non-index U.S. equity fund, which is actively managed. 6 At December 31, 2022 and 2021, respectively, 76% and 62% are invested in private equity funds with investment strategies that include branded consumer products and clean technology companies, 18% and 17% are invested in ABS including distressed mortgages and commercial and residential loans, 2% and 3% are invested in a broad range of financial assets in all global markets. 15% are invested in publicly traded fixed income securities at December 31, 2021. 7 At December 31, 2022, 64% are invested in domestic mortgage backed securities and 36% in high yield debt securities, respectively. At December 31, 2021, 71% are invested in emerging market equity securities and 20% in domestic mortgage backed securities, respectively. 8 At December 31, 2022, 56% are invested in Level 1 corporate bond fund, 21% in fixed income fund used for cash management and 22% in US equity fund, respectively. At December 31, 2021, 63% were invested in Level 1 registered investment companies that primarily consisted of a global equity mutual fund which seeks to outperform the MSCI World Total Return Index and 35% on fixed income fund used for cash management. At December 31, 2022 and 2021, respectively, approximately and 62% of the publicly traded equity investments, including equities in the common/collective funds, were located in the United States. Postretirement Benefits Other than Pensions The following table sets forth the VEBA Trust assets for Edison International and SCE that were accounted for at fair value as of December 31, 2022 and December 31, 2021, respectively, by asset class and level within the fair value hierarchy: December 31, 2022 (in millions) Level 1 Level 2 NAV 1 Total U.S. government and agency securities 2 $ 222 $ 304 $ — $ 526 Corporate stocks 3 103 2 — 105 Corporate notes and bonds 4 — 860 — 860 Common/collective funds 5 — — 413 413 Partnerships 6 — — 119 119 Registered investment companies 7 55 — — 55 Interest bearing cash — 56 — 56 Other 8 — 59 — 59 Total $ 380 $ 1,281 $ 532 $ 2,193 Receivables and payables, net (6) Combined net plan assets available for benefits 2,187 SCE's share of net plan assets $ 2,187 December 31, 2021 (in millions) Level 1 Level 2 NAV 1 Total U.S. government and agency securities 2 $ 813 $ 10 $ — $ 823 Corporate stocks 3 145 3 — 148 Corporate notes and bonds 4 — 997 — 997 Common/collective funds 5 — — 544 544 Partnerships 6 — — 107 107 Registered investment companies 7 44 — — 44 Interest bearing cash — 51 — 51 Other 8 — 59 — 59 Total $ 1,002 $ 1,120 $ 651 $ 2,773 Receivables and payables, net (1) Combined net plan assets available for benefits $ 2,772 SCE's share of net plan assets $ 2,772 1 These investments are measured at fair value using the net asset value per share practical expedient and have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the net plan assets available for benefits. 2 Level 1 U.S. government and agency securities are U.S. treasury bonds and notes. Level 2 primarily relates to the Federal Home Loan Mortgage Corporation and the Federal National Mortgage Association. 3 Corporate stock performance for actively managed separate accounts is primarily benchmarked against the Russell Indexes ( 73% ) and the MSCI All Country World Index ( 27% ) for both 2022 and 2021. 4 Corporate notes and bonds are diversified and include approximately $150 million for commercial collateralized mortgage obligations and other asset backed securities at both December 31, 2022 and 2021. 5 At December 31, 2022 and 2021, respectively, 53% and 65% of the common/collective assets are invested in index funds which seek to track performance in the MSCI All Country World Index Investable Market Index. 27% and 25% are invested in a non-index U.S. equity fund which is actively managed. The remaining assets in this category are primarily invested in fixed income fund and emerging market fund. 6 At December 31, 2022 and 2021, respectively, 63% and 54% of the partnerships are invested in private equity and venture capital funds. Investment strategies for these funds include branded consumer products, clean and information technology and healthcare. Of the remaining partnerships category, 31% and 35% are invested in asset backed securities including distressed mortgages, distressed companies and commercial and residential loans and debt and equity of banks, 6% and 11% are invested in a broad range of financial assets in all global markets. 7 At December 31, 2022 and 2021, respectively, registered investment companies were primarily invested in a money market fund ( 75% and 61% ) and exchange rate trade funds which seek to track performance of MSCI Emerging Market Index, Russell 2000 Index and international small cap equities ( 25% and 39% ) 8 Other includes $53 million and $44 million of municipal securities at December 31, 2022 and 2021, respectively . At December 31, 2022 and 2021, respectively, approximately and 68% of the publicly traded equity investments, including equities in the common/collective funds, were located in the United States. Stock-Based Compensation Edison International maintains a shareholder-approved incentive plan (the "2007 Performance Incentive Plan") that includes stock-based compensation. The maximum number of shares of Edison International's common stock authorized to be issued or transferred pursuant to awards under the 2007 Performance Incentive Plan, as amended, is approximately 71 million shares. As of December 31, 2022, Edison International had approximately 16 million shares remaining available for new award grants under its stock-based compensation plans. The following table summarizes total expense and tax benefits associated with stock-based compensation: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Stock-based compensation expense 1 Stock options $ 13 $ 16 $ 15 $ 7 $ 8 $ 7 Performance shares 13 9 5 6 4 2 Restricted stock units 14 12 8 9 8 4 Other 2 2 1 — — — Total stock-based compensation expense $ 42 $ 39 $ 29 $ 22 $ 20 $ 13 Income tax benefits related to stock-based compensation expense $ 9 $ 4 $ 4 $ 5 $ 3 $ 3 1 Reflected in "Operation and maintenance" on Edison International's and SCE's consolidated statements of income. Stock Options Under the 2007 Performance Incentive Plan, Edison International has granted stock options at exercise prices equal to the closing price at the grant date. Edison International may grant stock options and other awards related to, or with a value derived from, its common stock to directors and certain employees. Options generally expire 10 years after the grant date and vest over a period of three The fair value for each option granted was determined as of the grant date using the Black-Scholes option-pricing model. The Black-Scholes option-pricing model requires various assumptions noted in the following table: Years ended December 31, 2022 2021 2020 Expected terms (in years) 5.0 5.4 5.2 Risk-free interest rate 1.6% - 4.1% 1.1% - 1.3% 0.4% - 0.6% Expected dividend yield 4.0% - 5.0% 4.1% - 4.8% 4.2% - 5.0% Weighted average expected dividend yield 4.0% 4.5% 4.7% Expected volatility 27.8% - 28.6% 26.9% - 27.1% 24.9% - 26.9% Weighted average volatility 27.8% 26.9% 25.0% The expected term represents the period of time for which the options are expected to be outstanding and is primarily based on historical exercise and post-vesting cancellation experience and stock price history. The risk-free interest rate for periods within the contractual life of the option is based on a zero-coupon U.S. Treasury STRIPS (separate trading of registered interest and principal of securities) whose maturity corresponds to the option's expected term on the measurement date. Expected volatility is based on the historical volati

Investments

Investments	12 Months Ended
Investments	Dec. 31, 2022
Investments [Abstract]
Investments	Note 10. Nuclear Decommissioning Trusts Future decommissioning costs related to SCE's nuclear assets are expected to be funded from independent decommissioning trusts. The following table sets forth amortized cost and fair value of the trust investments (see Note 4 for a discussion of fair value of the trust investments): Amortized Costs Fair Value Longest December 31, December 31, December 31, December 31, (in millions) Maturity Date 2022 2021 2022 2021 Municipal bonds 2061 $ 672 $ 875 $ 754 $ 1,033 Government and agency securities 2072 1,025 1,095 1,091 1,212 Corporate bonds 2070 351 386 377 446 Short-term investments and receivables/payables 1 One-year 110 199 116 207 Total debt securities and other $ 2,158 $ 2,555 2,338 2,898 Equity securities 1,610 1,972 Total $ 3,948 $ 4,870 1 Short-term investments include $41 million and $37 million of repurchase agreements payable by financial institutions which earn interest, were 97% and fully secured by U.S. Treasury securities and mature by January 3, 2023 and January 3, 2022 as of December 31, 2022 and 2021, respectively. Trust fund earnings (based on specific identification) increase the trust fund balance and the ARO regulatory liability. Unrealized holding gains, net of losses, were $1.6 billion and $2.1 billion at December 31, 2022 and 2021, respectively. Trust assets are used to pay income taxes arising from trust investing activity. Deferred tax liabilities related to net unrealized gains were $321 million and $517 million at December 31, 2022 and 2021, respectively. Accordingly, the fair value of trust assets available to pay future decommissioning costs, net of deferred income taxes, totaled $3.6 billion and $4.4 billion at December 31, 2022 and 2021, respectively. The following table summarizes the gains and losses for the trust investments: Years ended December 31, (in millions) 2022 2021 2020 Gross realized gains $ 150 $ 339 $ 255 Gross realized losses (127) (24) (6) Net unrealized (losses)/gains for equity securities (369) 103 176 Due to regulatory mechanisms, changes in assets of the trusts from income or loss items do not materially affect earnings. Edison International Parent and Other's Investments Edison International Parent and Other hold strategic investments in companies focused on developing electric technologies and services. As of December 31, 2022 and December 31, 2021, these investments consist of $5 million and $12 million of marketable securities, respectively, and $12 million and $3 million of equity investments without readily determinable fair values (included as "Other investments" on Edison International's consolidated balance sheets), respectively. For further information of fair value of marketable securities, see Note 4. The equity investments without readily determinable fair values balances included cumulative upward adjustments of $9 million and $1 million as of December 31, 2022 and December 31, 2021, respectively. The cumulative upward adjustments resulted primarily from values determined by additional capital infusions. The following table summarizes unrealized gains/(losses) for equity investments held at the reporting date, recorded as "Other income" on Edison International's consolidated statements of income. Years ended December 31, (in millions) 2022 2021 2020 Marketable securities $ (6) $ 3 $ — Equity investments without readily determinable fair values - upward adjustments 8 1 — Total unrealized gains $ 2 $ 4 $ —

Regulatory Assets and Liabiliti

Regulatory Assets and Liabilities	12 Months Ended
Regulatory Assets and Liabilities	Dec. 31, 2022
Regulatory Assets and Liabilities Disclosure [Abstract]
Regulatory Assets and Liabilities	Note 11. Regulatory Assets and Liabilities Included in SCE's regulatory assets and liabilities are regulatory balancing accounts. CPUC-authorized balancing account mechanisms require SCE to refund or recover any differences between forecasted and actual costs. The CPUC has authorized balancing accounts for specified costs or programs such as fuel, purchased power, demand-side management programs, wildfire related costs, nuclear decommissioning and public purpose programs. Certain of these balancing accounts include a return on rate base of 7.68% in both 2022 and 2021. The CPUC authorizes the use of a balancing account to recover from or refund to customers differences in revenue resulting from actual and forecasted electricity sales. Amounts included in regulatory assets and liabilities are generally recorded with corresponding offsets to the applicable income statement accounts. Regulatory Assets SCE's regulatory assets included on the consolidated balance sheets are: December 31, (in millions) 2022 2021 Current: Regulatory balancing and memorandum accounts $ 2,400 $ 1,591 Power contracts 71 168 Other 26 19 Total current 2,497 1,778 Long-term: Deferred income taxes, net of liabilities 5,178 4,770 Power contracts — 71 Unamortized investments, net of accumulated amortization 113 114 Unamortized loss on reacquired debt 109 121 Regulatory balancing and memorandum accounts 1,589 1,897 Environmental remediation 241 242 Recovery assets 834 325 Other 117 120 Total long-term 8,181 7,660 Total regulatory assets $ 10,678 $ 9,438 In accordance with the accounting standards applicable to rate-regulated enterprises, SCE defers costs as regulatory assets that are probable of future recovery from customers and has recorded regulatory assets for these incremental costs at December 31, 2022. While SCE believes such costs are probable of future recovery, there is no assurance that SCE will collect all amounts currently deferred as regulatory assets. SCE's regulatory assets related to power contracts primarily represent derivative contracts that were designated as normal purchases and normal sales contracts. The liabilities for these power contracts are amortized over the remaining contract terms, approximately 1 to 4 years. For further information, see Note 1. SCE's regulatory assets related to deferred income taxes represent tax benefits passed through to customers. The CPUC requires SCE to flow through certain deferred income tax benefits to customers by reducing electricity rates, thereby deferring recovery of such amounts to future periods. Based on current regulatory ratemaking and income tax laws, SCE expects to recover its regulatory assets related to deferred income taxes over the life of the assets that give rise to the accumulated deferred income taxes, approximately from 1 to 60 years. For further information, see Note 8. SCE has long-term unamortized investments which include nuclear assets related to Palo Verde and the beyond the meter program. Nuclear assets related to Palo Verde and the beyond the meter program are expected to be recovered by 2046 and 2031, respectively, and both earned returns of 7.68% in 2022 and 2021. SCE's net regulatory asset related to its unamortized loss on reacquired debt will be recovered over the original amortization period of the reacquired debt over periods ranging from 10 to 40 years or the life of the new issuance if the debt is refunded or refinanced. SCE's regulatory assets related to environmental remediation represent a portion of the costs incurred at certain sites that SCE is allowed to recover through customer rates. See "Environmental Remediation" discussed in Note 12. Recovery assets represent the balance associated with the AB 1054 Excluded Capital Expenditures Related Recovery Properties and prudently incurred financing costs securitized with issuance of the associated bond. The recovery period is until 2046, when the bonds and interest are paid in full. For further details, see Note 3. Regulatory Liabilities SCE's regulatory liabilities included on the consolidated balance sheets are: December 31, (in millions) 2022 2021 Current: Regulatory balancing and memorandum accounts $ 584 $ 553 Energy derivatives 338 25 Other 42 25 Total current 964 603 Long-term: Costs of removal 2,589 2,552 Re-measurement of deferred taxes 2,250 2,315 Recoveries in excess of ARO liabilities 1,231 2,155 Regulatory balancing and memorandum accounts 1,116 648 Pension and other postretirement benefits 1,007 1,281 Other 18 30 Total long-term 8,211 8,981 Total regulatory liabilities $ 9,175 $ 9,584 SCE's regulatory liabilities related to energy derivatives are primarily an offset to unrealized gains on derivatives. SCE's regulatory liabilities related to costs of removal represent differences between asset removal costs recorded and amounts collected in rates for those costs. SCE's regulatory liabilities include excess deferred income taxes resulting from statutory income tax rate changes. The regulatory liabilities are generally expected to be refunded to customers over the lives of the assets and liabilities that gave rise to the deferred income taxes. SCE's regulatory liabilities related to recoveries in excess of ARO liabilities represents the cumulative differences between ARO expenses and amounts collected in rates primarily for the decommissioning of the SCE's nuclear generation facilities. Decommissioning costs recovered through rates are primarily placed in nuclear decommissioning trusts. This regulatory liability also represents the deferral of realized and unrealized gains and losses on the nuclear decommissioning trust investments. See Note 10 for further discussion. SCE's regulatory liabilities related to pension and other post-retirement plans represent the overfunded net gains and prior service costs of the plans. This amount will be refunded through rates over time to customers. See "Pension Plans and Postretirement Benefits Other than Pensions" discussion in Note 9. Net Regulatory Balancing and Memorandum Accounts Balancing accounts track amounts that the CPUC or FERC have authorized for recovery. Balancing account over and under collections represent differences between cash collected in current rates for specified forecasted costs and such costs that are actually incurred. Undercollections are recorded as regulatory balancing account assets. Overcollections are recorded as regulatory balancing account liabilities. With some exceptions, SCE seeks to adjust rates on an annual basis or at other designated times to recover or refund the balances recorded in its balancing accounts. Memorandum accounts are authorized to track costs for potential future recovery. Regulatory balancing and memorandum accounts that SCE does not expect to collect or refund in the next 12 months are reflected in the long-term section of the consolidated balance sheets. Regulatory balancing and memorandum accounts that do not have the right of offset are presented gross in the consolidated balance sheets. Under and over collections in balancing accounts and amounts recorded in memorandum accounts typically accrue interest based on a three-month commercial paper rate published by the Federal Reserve. The following table summarizes the significant components of regulatory balancing and memorandum accounts included in the above tables of regulatory assets and liabilities: December 31, (in millions) 2022 2021 Asset (liability) Energy resource recovery account $ 1,580 $ 759 Portfolio allocation balancing account (73) (183) New system generation balancing account (63) 73 Public purpose programs and energy efficiency programs (1,577) (1,066) Base revenue requirement balancing account 1,108 849 GRC wildfire mitigation balancing accounts 1 67 12 Greenhouse gas auction revenue and low carbon fuel standard revenue (289) (298) FERC balancing accounts (123) 55 Wildfire and drought restoration accounts 2 352 299 Wildfire-related memorandum accounts 3 1,168 1,456 COVID-19-related memorandum accounts 67 94 Customer service re-platform memorandum account 64 128 Tax accounting memorandum account and pole loading balancing account 90 171 Excess bond and power charge balancing account (56) — Other (26) (62) Asset $ 2,289 $ 2,287 1 The 2021 GRC decision approved the establishment of the vegetation management balancing account ("VMBA") to track vegetation management expenses up to 115% of amounts authorized, the Wildfire Risk Mitigation balancing account ("WRMBA") to track the costs of SCE's Wildfire Covered Conductor Program up to 110% of amounts authorized and the risk management balancing account to track the authorized costs of wildfire insurance. The amount recorded to these balancing accounts represents the difference between costs tracked in the balancing accounts and authorized revenues for those costs recorded to the base revenue requirement balancing account. If spending is less than authorized, SCE will refund those amounts to customers. If spending is within the specified threshold, if any, for each balancing account, SCE will recover those costs from customers. Amounts above the specified threshold, or above amounts authorized if a higher threshold was not established, for each balancing account may be eligible for deferral to wildfire-related memorandum accounts. 2 The wildfire and drought restoration accounts regulatory assets represent restoration costs that are recorded in a Catastrophic Event Memorandum Account ("CEMA"). 3 The wildfire-related memorandum accounts regulatory assets represent wildfire-related costs that are probable of future recovery from customers, subject to a reasonableness review. The Fire Hazard Prevention Memorandum Account ("FHPMA") was used to track costs related to fire safety and to implement fire prevention corrective action measures in extreme and very high fire threat areas. The Wildfire Expense Memorandum Account ("WEMA") is used to track incremental wildfire insurance costs and uninsured wildfire-related financing, legal and claims costs related to the post-2018 wildfires that SCE believes are probable of recovery. See Note 12 for further details. The Wildfire Mitigation Plan Memorandum Account ("WMPMA") is used to track costs incurred to implement SCE's wildfire mitigation plan that are not currently reflected in SCE's revenue requirements. The Fire Risk Mitigation Memorandum Account ("FRMMA") is used to track costs related to the reduction of fire risk that are incremental to costs approved for recovery in SCE's GRCs that are not tracked in any other wildfire-related memorandum account. The balance also includes vegetation management spending in excess of the 115% threshold for the VMBA described above.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 12. Power Purchase Agreements SCE entered into various agreements to purchase power, electric capacity and other energy products. At December 31, 2022, the undiscounted future expected minimum payments for the SCE PPAs (primarily related to renewable energy contracts), which were approved by the CPUC and met other critical contract provisions (including completion of major milestones for construction), were as follows: (in millions) Total 2023 $ 3,106 2024 2,596 2025 2,409 2026 2,401 2027 2,221 Thereafter 18,000 Total future commitments 1 $ 30,733 1 Certain power purchase agreements are treated as operating leases. For further discussion, see Note 13. Additionally, as of December 31, 2022, SCE has executed contracts (including capacity reduction contracts) that have not met the critical contract provisions that would increase contractual obligations by $29 million in 2023, $123 million in 2024, $171 million in 2025, $182 million in 2026, $186 million in 2027 and $1,864 million thereafter, if all critical contract provisions are completed. These obligations include long-term lease contracts commencing in 2023 with total future minimum lease payments of $393 million. Costs incurred for PPAs were $5.1 billion in 2022, $4.7 billion in 2021 and $3.8 billion in 2020, which include costs associated with contracts with terms of less than one year. Other Commitments The following summarizes the estimated minimum future commitments for SCE's other commitments: (in millions) 2023 2024 2025 2026 2027 Thereafter Total Other contractual obligations $ 46 $ 52 $ 50 $ 46 $ 35 $ 203 $ 432 Costs incurred for other commitments were $58 million in 2022, $62 million in 2021 and $80 million in 2020. Other commitments include fuel supply contracts for Palo Verde which require payment only if the fuel is made available for purchase. Also included are commitments related to maintaining reliability and expanding SCE's transmission and distribution system. The table above does not include asset retirement obligations, which are discussed in Note 1. Indemnities Edison International and SCE have various financial and performance guarantees and indemnity agreements which are issued in the normal course of business. Edison International and SCE have agreed to provide indemnifications through contracts entered into in the normal course of business. These are primarily indemnifications against adverse litigation outcomes in connection with underwriting agreements, indemnities for specified environmental liabilities and income taxes with respect to assets sold or other contractual arrangements. Edison International's and SCE's obligations under these agreements may or may not be limited in terms of time and/or amount, and in some instances Edison International and SCE may have recourse against third parties. Edison International and SCE have not recorded a liability related to these indemnities. The overall maximum amount of the obligations under these indemnifications cannot be reasonably estimated. Contingencies In addition to the matters disclosed in these Notes, Edison International and SCE are involved in other legal, tax, and regulatory proceedings before various courts and governmental agencies regarding matters arising in the ordinary course of business. Edison International and SCE believe the outcome of each of these other proceedings will not materially affect its financial position, results of operations and cash flows. Southern California Wildfires and Mudslides California has experienced unprecedented weather conditions in recent years due to climate change and wildfires in SCE's territory, including those where SCE's equipment may be alleged to be associated with the fire's ignition, have caused loss of life and substantial damage in recent years. SCE's service territory remains susceptible to additional wildfire activity. Numerous claims related to wildfire events have been initiated against SCE and Edison International. Edison International and SCE have incurred material losses in connection with the 2017/2018 Wildfire/Mudslide Events (defined below), which are described below. In addition, SCE's equipment has been, and may further be, alleged to be associated with wildfires that have originated in Southern California subsequent to 2018. Liability Overview The extent of legal liability for wildfire-related damages in actions against utilities depends on a number of factors, including whether the utility substantially caused or contributed to the damages and whether parties seeking recovery of damages will be required to show negligence in addition to causation. California courts have previously found utilities to be strictly liable for property damage along with associated interest and attorneys' fees, regardless of fault, by applying the theory of inverse condemnation when a utility's facilities were determined to be a substantial cause of a wildfire that caused the property damage. If inverse condemnation is held to be inapplicable to SCE in connection with a wildfire, SCE still could be held liable for property damages and associated interest if the property damages were found to have been proximately caused by SCE's negligence. If SCE were to be found negligent, SCE could also be held liable for, among other things, fire suppression costs, business interruption losses, evacuation costs, clean-up costs, medical expenses, and personal injury/wrongful death claims. Additionally, SCE could potentially be subject to fines and penalties for alleged violations of CPUC rules and state laws investigated in connection with the ignition of a wildfire. Final determinations of legal liability for wildfire events, including determinations of whether SCE was negligent, would only be made during lengthy and complex litigation processes and settlements may be reached before determinations of legal liability are ever made. Even when investigations are still pending or legal liability is disputed, an assessment of likely outcomes, including through future settlement of disputed claims, may require estimated losses to be accrued under accounting standards. Each reporting period, management reviews its loss estimates for remaining alleged and potential claims related to wildfire events. The process for estimating losses associated with alleged and potential wildfire related claims requires management to exercise significant judgment based on a number of assumptions and subjective factors, including, but not limited to: estimates of known and expected claims by third parties based on currently available information, opinions of counsel regarding litigation risk, the status of and developments in the course of litigation, and prior experience litigating and settling wildfire litigation claims. As additional information becomes available, management's estimates and assumptions regarding the causes and financial impact of wildfire events may change. Actual losses incurred may be higher or lower than estimated based on several factors, including the uncertainty in estimating damages that have been or may be alleged. 2017/2018 Wildfire/Mudslide Events Wildfires in SCE's territory in December 2017 and November 2018 caused loss of life, substantial damage to both residential and business properties, and service outages for SCE customers. The investigating government agencies, the Ventura County Fire Department ("VCFD") and California Department of Forestry and Fire Protection ("CAL FIRE"), have determined that the largest of the 2017 fires in SCE's territory originated on December 4, 2017, in the Anlauf Canyon area of Ventura County (the investigating agencies refer to this fire as the "Thomas Fire"), followed shortly thereafter by a second fire that originated near Koenigstein Road in the City of Santa Paula (the "Koenigstein Fire"). The December 4, 2017 fires eventually burned substantial acreage in both Ventura and Santa Barbara Counties. According to CAL FIRE, the Thomas and Koenigstein Fires, collectively, burned over 280,000 acres, destroyed or damaged an estimated 1,343 structures and resulted in two confirmed fatalities. The largest of the November 2018 fires in SCE's territory, known as the "Woolsey Fire," originated in Ventura County and burned acreage in both Ventura and Los Angeles Counties. According to CAL FIRE, the Woolsey Fire burned almost 100,000 acres, destroyed an estimated 1,643 structures, damaged an estimated 364 structures and resulted in three confirmed fatalities. Four additional fatalities are alleged to have been associated with the Woolsey Fire. As described below, multiple lawsuits related to the Thomas and Koenigstein Fires and the Woolsey Fire have been initiated against SCE and Edison International. Some of the Thomas and Koenigstein Fires lawsuits claim that SCE and Edison International have responsibility for the damages caused by debris flows and flooding in Montecito and surrounding areas in January 2018 (the "Montecito Mudslides") based on a theory alleging that SCE has responsibility for the Thomas and/or Koenigstein Fires and further alleging that the Thomas and/or Koenigstein Fires proximately caused the Montecito Mudslides. According to Santa Barbara County initial reports, the Montecito Mudslides destroyed an estimated 135 structures, damaged an estimated 324 structures, and resulted in 21 confirmed fatalities, with two additional fatalities presumed. One of the presumed fatalities has been confirmed. The Thomas Fire, the Koenigstein Fire, the Montecito Mudslides (defined below) and the Woolsey Fire are each referred to as a "2017/2018 Wildfire/Mudslide Event," and, collectively, referred to as the "2017/2018 Wildfire/Mudslide Events." In 2022, SCE accrued estimated losses of $1.3 billion for claims related to the 2017/2018 Wildfire/Mudslide Events, against which SCE has recorded expected recoveries through FERC electric rates of $76 million. The resulting net charge to earnings was $1.2 billion ( $879 million after-tax). As of December 31, 2022, SCE had paid $7.6 billion under executed settlements, had $185 million to be paid under executed settlements, including $120 million to be paid under the SED Agreement (as defined below), and had $934 million of estimated related to the 2017/2018 Wildfire/Mudslide Events. The estimated losses for the 2017/2018 Wildfire/Mudslide Events do not include an estimate of potential As of the filing of this report SCE has not concluded that losses related to funds disbursed by Cal OES are probable. Edison International and SCE may incur a material loss in excess of amounts accrued in connection with the remaining alleged and potential claims related to the 2017/2018 Wildfire/Mudslide Events. Due to the number of uncertainties and possible outcomes related to the 2017/2018 Wildfire/Mudslide Events litigation, Edison International and SCE cannot estimate the upper end of the range of reasonably possible losses that may be incurred. Estimated losses for the 2017/2018 Wildfire/Mudslide Events litigation are based on a number of assumptions and are subject to change as additional information becomes available. Actual losses incurred may be higher or lower than estimated based on several factors, including the uncertainty in estimating damages that have been or may be alleged. For instance, SCE will receive additional information with respect to damages claimed The CPUC and FERC may not allow SCE to recover uninsured losses through electric rates if it is determined that such losses were not reasonably or prudently incurred. SCE will seek rate recovery of prudently incurred losses and related costs realized in connection with the 2017/2018 Wildfire/Mudslide Events in excess of available insurance, other than for any obligations under the SED Agreement (as defined below). See "Loss Estimates for Third Party Claims and Potential Recoveries from Insurance and through Electric Rates" below for additional information. External Investigations and Internal Review The VCFD and CAL FIRE have jointly issued reports concerning their findings regarding the causes of the Thomas Fire and the Koenigstein Fire. The reports did not address the causes of the Montecito Mudslides. SCE has also received a non-final redacted draft of a report from the VCFD regarding Woolsey Fire (the "Redacted Woolsey Report"). SCE cannot predict when the VCFD will release its final report regarding the Woolsey Fire. The VCFD and CAL FIRE findings do not determine legal causation of or assign legal liability for the Thomas, Koenigstein or Woolsey Fires; final determinations of legal causation and liability would only be made during lengthy and complex litigation. The CPUC's Safety and Enforcement Division ("SED") conducted investigations to assess SCE's compliance with applicable rules and regulations in areas impacted by the Thomas, Koenigstein and Woolsey Fires. As discussed below, in October 2021, SCE and the SED executed the SED Agreement (as defined below) to resolve the SED's investigations into the 2017/2018 Wildfire/Mudslide Events. The California Attorney General's Office has completed its investigation of the Thomas Fire and the Woolsey Fire without pursuing criminal charges. SCE's internal review into the facts and circumstances of each of the 2017/2018 Wildfire/Mudslide Events is complex and time consuming. SCE expects to obtain and review additional information and materials in the possession of third parties during the course of its internal reviews and the litigation processes. Thomas Fire On March 13, 2019, the VCFD and CAL FIRE jointly issued a report concluding, after ruling out other possible causes, that the Thomas Fire was started by SCE power lines coming into contact during high winds, resulting in molten metal falling to the ground. However, the report does not state that their investigation found molten metal on the ground. At this time, based on available information, SCE has not determined whether its equipment caused the Thomas Fire. system and at least 15 minutes prior to the start time indicated in the report. SCE is continuing to assess the extent of damages that may be attributable to the Thomas Fire. Koenigstein Fire On March 20, 2019, the VCFD and CAL FIRE jointly issued a report finding that the Koenigstein Fire was caused when an energized SCE electrical wire separated and fell to the ground along with molten metal particles and ignited the dry vegetation below. SCE believes that its equipment was associated with the ignition of the Koenigstein Fire. SCE is continuing to assess the extent of damages that may be attributable to the Koenigstein Fire. Montecito Mudslides SCE's internal review includes inquiry into whether the Thomas and/or Koenigstein Fires proximately caused or contributed to the Montecito Mudslides, whether, and to what extent, the Thomas and/or Koenigstein Fires were responsible for the damages in the Montecito area and other factors that potentially contributed to the losses that resulted from the Montecito Mudslides. Many other factors, including, but not limited to, weather conditions and insufficiently or improperly designed and maintained debris basins, roads, bridges and other channel crossings, could have proximately caused, contributed to or exacerbated the losses that resulted from the Montecito Mudslides. At this time, based on available information, SCE has not been able to determine whether the Thomas Fire or the Koenigstein Fire, or both, were responsible for the damages in the Montecito area. In the event that SCE is determined to have caused the fire that spread to the Montecito area, SCE cannot predict whether, if fully litigated, the courts would conclude that the Montecito Mudslides were caused or contributed to by the Thomas and/or Koenigstein Fires or that SCE would be liable for some or all of the damages caused by the Montecito Mudslides. Woolsey Fire SCE's internal review into the facts and circumstances of the Woolsey Fire is ongoing. SCE has reported to the CPUC that there was an outage on SCE's electric system in the vicinity of where the Woolsey Fire reportedly began on November 8, 2018. SCE is aware of witnesses who saw fire in the vicinity of SCE's equipment at the time the fire was first reported. While SCE did not find evidence of downed electrical wires on the ground in the suspected area of origin, it observed a pole support wire in proximity to an electrical wire that was energized prior to the outage. The Redacted Woolsey Report states that the VCFD investigation team determined that electrical equipment owned and operated by SCE was the cause of the Woolsey Fire. Absent additional evidence, SCE believes that it is likely that its equipment was associated with the ignition of the Woolsey Fire. SCE expects to obtain and review additional information and materials in the possession of CAL FIRE and others during the course of its internal review and the Woolsey Fire litigation process, including SCE equipment that has been retained by CAL FIRE. Litigation Multiple lawsuits related to the 2017/2018 Wildfire/Mudslide Events naming SCE as a defendant have been filed by three categories of plaintiffs: individual plaintiffs, subrogation plaintiffs and public entity plaintiffs. A number of the lawsuits also name Edison International as a defendant and some of the lawsuits were filed as purported class actions. The litigation could take a number of years to be resolved because of the complexity of the matters and number of plaintiffs. On October 4, 2018, the Los Angeles Superior Court denied Edison International's and SCE's challenge to the application of inverse condemnation to SCE with respect to the Thomas and Koenigstein Fires and, on February 26, 2019, the California Supreme Court denied SCE's petition to review the Superior Court's decision. In April 2022, following a stipulated judgment entered against SCE in the TKM litigation, SCE filed an appeal related to inverse condemnation in the California Court of Appeal. In January 2019, SCE filed a cross-complaint against certain local public entities alleging that failures by these entities, such as failure to adequately plan for flood hazards and build and maintain adequate debris basins, roads, bridges and other channel crossings, among other things, caused, contributed to or exacerbated the losses that resulted from the Montecito Mudslides. These cross-claims in the Montecito Mudslides litigation were not released as part of the Local Public Entity Settlements (as defined below). Settlements In the fourth quarter of 2019, SCE paid $360 million to a number of local public entities to resolve those parties' collective claims arising from the 2017/2018 Wildfire/Mudslide Events (the "Local Public Entity Settlements"). In the third quarter of 2020, Edison International and SCE entered into an agreement (the "TKM Subrogation Settlement") under which all of the insurance subrogation plaintiffs' in the Thomas Fire, Koenigstein Fire and Montecito Mudslides litigation (the "TKM Subrogation Plaintiffs") collective claims arising from the Thomas Fire, Koenigstein Fire or Montecito Mudslides have been resolved. Under the TKM Subrogation Settlement, SCE paid the TKM Subrogation Plaintiffs an aggregate of $1.2 billion in October 2020 and also agreed to pay $0.555 for each dollar in claims to be paid by the TKM Subrogation Plaintiffs to their policy holders on or before July 15, 2023, up to an agreed upon cap. In January 2021, Edison International and SCE entered into an agreement (the "Woolsey Subrogation Settlement") under which all of the insurance subrogation plaintiffs' in the Woolsey Fire litigation (the "Woolsey Subrogation Plaintiffs") collective claims arising from the Woolsey Fire have been resolved. Under the Woolsey Subrogation Settlement, SCE paid the Woolsey Subrogation Plaintiffs an aggregate of $2.2 billion in March and April 2021. SCE has also agreed to pay $0.67 for each dollar in claims to be paid by the Woolsey Subrogation Plaintiffs to their policy holders on or before July 15, 2023, up to an agreed upon cap. As of December 31, 2022, SCE has also entered into settlements with approximately 9,500 individual plaintiffs in the 2017/2018 Wildfire/Mudslide Events litigation. In 2020, 2021 and 2022, SCE entered into settlements with individual plaintiffs in the 2017/2018 Wildfire/Mudslide Events litigation under which it agreed to pay an aggregate of approximately $300 million, $1.7 billion and $1.7 billion, respectively, to those individual plaintiffs. In the first, second, third and fourth quarters of 2022 SCE entered into settlements with individual plaintiffs in the 2017/2018 Wildfire/Mudslide Events litigation under which it agreed to pay an aggregate of approximately $700 million, $400 million, $350 million and $280 million, respectively, to those individual plaintiffs. The statutes of limitations for individual plaintiffs in the 2017/2018 Wildfire/Mudslide Events have expired. Edison International and SCE did not admit wrongdoing or liability as part of any of the settlements described above. Other claims and potential claims related to the 2017/2018 Wildfire/Mudslide Events remain. SCE continues to explore reasonable settlement opportunities with other plaintiffs in the outstanding 2017/2018 Wildfire/Mudslide Events litigation. SED Agreement In October 2021, SCE and the SED executed an agreement (the "SED Agreement") to resolve the SED's investigations into the 2017/2018 Wildfire/Mudslide Events and three other 2017 wildfires for, among other things, aggregate costs of $550 million. The $550 million in costs comprised of a $110 million fine to be paid to the State of California General Fund, $65 million of shareholder-funded safety measures, and an agreement by SCE to waive its right to seek cost recovery in CPUC-jurisdictional rates for $375 million of third-party uninsured claims payments. The SED Agreement provides that SCE may, on a permanent basis, exclude from its ratemaking capital structure any after-tax charges to equity or debt borrowed to finance costs incurred under the SED Agreement. The SED Agreement also imposes other obligations on SCE, including reporting requirements and safety-focused studies. SCE's obligations under the SED Agreement commenced on August 15, 2022, when CPUC approval of the SED Agreement became final and non-appealable. SCE did not admit imprudence, negligence or liability with respect to the 2017/2018 Wildfire/Mudslide Events in the SED Agreement. Loss Estimates for Third Party Claims and Potential Recoveries from Insurance and through Electric Rates At December 31, 2022 and December 31, 2021, Edison International's and SCE's balance sheets include fixed payments to be made under executed settlement agreements and accrued estimated losses of $1.1 billion and $1.7 billion, respectively, for the 2017/2018 Wildfire/Mudslide Events. The following table presents changes in estimated losses since December 31, 2021: (in millions) Balance at December 31, 2021 1 $ 1,734 Increase in accrued estimated losses 1,296 Amounts paid (1,911) Balance at December 31, 2022 2 $ 1,119 1 At December 31, 2021, $131 million in current liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets consists of settlements executed in connection with the 2017/2018 Wildfire/Mudslide Events. At December 31, 2021, the $1,733 million included in deferred credits and other liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets includes Edison International's and SCE's best estimate of expected losses for the 2017/2018 Wildfire/Mudslide Events of $1,603 million and other wildfire-related claims estimates of $130 million. 2 At December 31, 2022, $121 million in current liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets consists of $65 million of settlements executed and $56 million of a short term payables under the SED Agreement in connection with the 2017/2018 Wildfire/Mudslide Events. At December 31, 2022, the $1,687 million included in deferred credits and other liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets includes Edison International's and SCE's best estimate of expected losses for remaining alleged and potential claims related to the 2017/2018 Wildfire/Mudslide Events of $934 million, $64 million of a long term payables under the SED Agreement and other wildfire-related claims estimates of $689 million. For the years-ended December 31, 2022 and 2021, Edison International’s and SCE’s income statements include charges for the estimated losses, net of expected recoveries from insurance and FERC customers, related to the 2017/2018 Wildfire/Mudslide Events as follows: Years ended December 31, (in millions) 2022 2021 Charge for wildfire-related claims $ 1,296 $ 1,265 Expected revenue from FERC customers (76) (67) Total pre-tax charge 1,220 1,198 Income tax benefit (341) (304) Total after-tax charge $ 879 $ 894 For events that occurred in 2017 and early 2018, principally the Thomas and Koenigstein Fires and Montecito Mudslides, SCE had $1.0 billion of wildfire-specific insurance coverage, subject to a self-insured retention of $10 million per occurrence. For the Woolsey Fire, SCE had an additional $1.0 billion of wildfire-specific insurance coverage, subject to a self-insured retention of $10 million per occurrence. In total, through December 31, 2022, SCE has accrued estimated losses of $8.8 billion, has paid or is obligated to pay approximately $7.8 billion in settlements, including $120 million to be paid under the SED Agreement, and has recovered $2.0 billion from its insurance carriers in relation to the 2017/2018 Wildfire/Mudslide Events. Recovery of SCE's losses realized in connection with the 2017/2018 Wildfire/Mudslide Events in excess of available insurance is subject to approval by regulators. Under accounting standards for rate-regulated enterprises, SCE defers costs as regulatory assets when it concludes that such costs are probable of future recovery in electric rates. SCE utilizes objectively determinable evidence to form its view on probability of future recovery. The only directly comparable precedent in which a California investor-owned utility has sought recovery for uninsured wildfire-related costs is San Diego Gas & Electric's ("SDG&E") requests for cost recovery related to 2007 wildfire activity, where the FERC allowed recovery of all FERC-jurisdictional wildfire-related costs while the CPUC rejected recovery of all CPUC-jurisdictional wildfire-related costs based on a determination that SDG&E did not meet the CPUC's prudency standard. As a result, while SCE does not agree with the CPUC's decision, it believes that the CPUC's interpretation and application of the prudency standard to SDG&E creates substantial uncertainty regarding how that standard will be applied to an investor-owned utility in wildfire cost-recovery proceedings for fires ignited prior to July 12, 2019. SCE will continue to evaluate the probability of recovery based on available evidence, including judicial, legislative and regulatory decisions, including any CPUC decisions illustrating the interpretation and/or application of the prudency standard when making determinations regarding recovery of uninsured wildfire-related costs. While the CPUC has not made a determination regarding SCE's prudency relative to any of the 2017/2018 Wildfire/Mudslide Events, SCE is unable to conclude, at this time, that uninsured CPUC-jurisdictional wildfire-related costs are probable of recovery through electric rates. SCE would record a regulatory asset at the time it obtains sufficient information to support a conclusion that recovery is probable. Through the operation of its FERC Formula Rate, and based upon the precedent established in SDG&E's recovery of FERC-jurisdictional wildfire-related costs, SCE believes it is probable it will recover its FERC-jurisdictional wildfire and mudslide related costs and has recorded total expected recoveries of $376 million within the FERC balancing account. This was the FERC portion of the total estimated losses accrued. As of December 31, 2022, collections have reduced the regulatory assets remaining in the FERC balancing account to $142 million. In July 2019, SCE filed a CEMA application with the CPUC to seek recovery of, among other things, approximately $60 million of capital expenditures and capital related expenses incurred to restore service to customers and to repair, replace and restore buildings and SCE's facilities damaged or destroyed as a result of six 2017 fires, primarily the Thomas and Koenigstein Fires. In August 2021, the CPUC issued a final decision which denied without prejudice SCE's application to recover a revenue requirement of $8 million for all six 2017 wildfires on the basis that SCE did not demonstrate that it was prudent in relation to the Thomas and Rye fires and had failed to segregate the costs attributable to the other four fires. Of the $8 million revenue requirement that was denied, $6 million was for the Thomas and Rye fires. CAL FIRE has determined that the Thomas and Rye fires were caused by SCE equipment. The decision allows SCE to submit additional applications with the CPUC to recover the costs associated with the Thomas and Rye fires, does not specify a deadline for any such applications, and directs that SCE must prove it was prudent in relation to the Thomas and/or Rye fires, as applicable, in any such future applications. As required by the final decision with respect to the other four fires, SCE filed supplemental testimony in November 2021 segregating the restoration costs attributable to each such fire. In June 2022, the CPUC approved SCE's entire request with respect to the other four fires. As of December 31, 2022, SCE has $177 million in assets recorded in property, plant and equipment in relation to restoration costs related to the 2017/2018 Wildfire/Mudslide Events which may not be recoverable. These assets would be impaired if the restoration costs are permanently disallowed by the CPUC in future cost recovery proceedings. SCE expects to seek to recover costs incurred for reconstructing its system and restoring service to structures that were damaged or destroyed by the Thomas, Koenigstein and Woolsey Fires in future applications with the CPUC. Post-2018 Wildfires Several wildfires have significantly impacted portions of SCE's service territory after 2018 (the wildfires that originated in Southern California after 2018 where SCE's equipment may be alleged to be associated with the fire's ignition are referred to collectively as the "Post-2018 Wildfires"). In 2022, SCE accrued estimated losses of $572 million for claims related to the Post-2018 Wildfires, against which SCE has recorded $399 expected recoveries through electric rates of $162 million. The resulting net charge to earnings was $11 million ( $8 million after-tax). Through SCE has recorded and expected recoveries through electric rates of related to the Post-2018 Wildfires. The after-tax net charges to earnings recorded through December 31, 2022 have been . Expected recoveries from insurance recorded for the Post-2018 Wildfires are supported by SCE’s insurance coverage for multiple policy years. As of December 31, 2022, SCE had paid $13 million under executed settlements related to the Post-2018 Wildfires. After giving effect to all payment obligations under settlements entered into through December 31, 2022, Edison International's and SCE's estimated losses (established at the lower end of the estimated range of reasonably possible losses) Expected recoveries from insurance recorded for the Post-2018 Wildfires are supported by SCE's insurance coverage for multiple policy years. 2019 Saddle Ridge Fire The "Saddle Ridge Fire," originated in Los Angeles County in October 2019 and burned approximately 9,000 acres, destroyed an estimated 19 structures, damaged an estimated 88 structures, and resulted in one fatality and injuries to 8 fire fighters. In an unsigned and undated report that SCE received in December 2022, the Los Angeles Fire Department stated with respect to the Saddle Ridge Fire that the cause of ignition was unintentional, the form of heat was undetermined, the item first ignited was undetermined and the material type first ignited was undetermined. The Los Angeles Fire Department report noted that no other compete

Leases

Leases	12 Months Ended
Leases	Dec. 31, 2022
Leases
Leases	Note 13. Leases as Lessee SCE enters into various agreements to purchase power, electric capacity and other energy products that may be accounted for as leases when SCE has dispatch rights that determine when and how a plant runs. SCE also leases property and equipment primarily related to vehicles, office space and other equipment. The terms of the lease contracts included in the table below are primarily 2 to 20 years for PPA leases, 3 to 72 years for office leases, and 5 to 13 years for the remaining other operating leases. Finance leases are immaterial to the periods presented. The following table summarizes SCE's future lease payments for operating leases as of December 31, 2022: PPA Operating Other Operating (in millions) Leases 1 Leases 2 2023 $ 493 $ 49 2024 82 42 2025 73 38 2026 70 35 2027 65 31 Thereafter 633 117 Total lease payments 1,416 312 Amount representing interest 227 68 Lease liabilities $ 1,189 $ 244 1 Excludes expected purchases from most renewable energy contracts, which do not meet the definition of a lease payment since renewable power generation is contingent on external factors. 2 Excludes escalation clauses based on consumer price or other indices and residual value guarantees that are not considered probable at the commencement date of the lease. The timing of SCE's recognition of the lease expense conforms to ratemaking treatment for SCE's recovery of the cost of electricity and is included in purchased power for operating leases. The following table summarizes the components of SCE's lease expense: Years ended December 31, (in millions) 2022 2021 2020 PPA leases: Operating lease cost $ 580 $ 305 $ 111 Variable lease cost 1 2,661 2,098 1,918 Short term lease cost — 539 — Total PPA lease cost 3,241 2,942 2,029 Other operating leases cost 52 47 47 Total lease cost $ 3,293 $ 2,989 $ 2,076 1 Includes lease costs from renewable energy contracts where payments are based on contingent external factors such as wind, hydro and solar power generation. Other information related to leases was as follows: Years ended December 31, (in millions, except lease term and discount rate) 2022 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from: PPA operating leases $ 580 $ 305 $ 111 Other operating leases 50 45 44 ROU assets obtained in exchange for lease obligations: PPA operating leases $ 20 $ 1,084 $ 463 Other operating leases 76 71 58 Weighted average remaining lease term (in years): PPA operating leases 9.42 8.16 9.75 Other operating leases 10.38 11.14 12.13 Weighted average discount rate: PPA operating leases 2.95 % 2.43 % 3.12 % Other operating leases 3.78 % 3.34 % 3.63 % Leases as Lessor SCE also enters into operating leases to rent certain land and facilities as a lessor. These leases primarily have terms that range from 15 to 65 years. During the years ended December 31, 2022, 2021 and 2020, SCE recognized lease income of $18 million, $16 million and $17 million, respectively, which is included in operating revenue on the consolidated statements of income. At December 31, 2022, the undiscounted cash flow expected to be received from lease payments for the remaining years is as follows: (in millions) 2023 $ 13 2024 12 2025 11 2026 6 2027 6 Thereafter 120 Total $ 168

Equity

Equity	12 Months Ended
Equity	Dec. 31, 2022
Equity
Equity	Note 14. Common Stock Issuances Edison International continued to settle its ongoing common stock requirements of various internal programs through issuance of new common stock. During the twelve months ended December 31, 2022, 1,253,049 shares of common stock were issued as stock compensation awards for net cash receipts of $57 million, 273,642 shares of new common stock were issued in lieu of distributing $18 million to shareholders opting to receive dividend payments in the form of additional common stock, 157,000 shares of common stock were purchased by employees through the 401(k) defined contribution savings plan for net cash receipts of $10 million as dividend payments, 109,750 shares of common stock were issued related to optional cash investments of $7 million and 36,912 shares of common stock were issued to employees through the ESPP for net cash receipts of $2 million . During the twelve months ended December 31, 2021, 629,092 shares of common stock were issued as stock compensation awards for net cash receipts of $25 million, 522,400 shares of common stock were purchased by employees through the 401(k) defined contribution savings plan for net cash receipts of $30 million, 293,031 shares of new common stock were issued in lieu of distributing $17 million to shareholders opting to receive dividend payments in the form of additional common stock and 26,475 shares of common stock were issued related to optional cash investments of $2 million . Starting July 2021, the 401(k) defined contribution savings plan no longer offered Edison International's stock as an investment option to employees. Subsequent to the change, stock issued through the 401(k) defined contribution savings plan were dividend payments made in the form of additional common stock. At-the-Market Program In the third quarter of 2022, Edison International filed a prospectus supplement and executed several distribution agreements with certain sales agents to establish an "at-the-market"("ATM") program under which it may sell shares of its common stock having an aggregate sales price of up to $500 million. As of December 31, 2022, no sales had occurred and Edison International has no obligation to sell the remaining shares available under the ATM program. Preferred Stock Issuances In 2021, Edison International issued 1,250,000 shares of 5.375% Fixed-Rate Reset Cumulative Perpetual Preferred Stock, Series A, and 750,000 shares of its 5.00% Fixed-Rate Reset Cumulative Perpetual Preferred Stock, Series B, each with a liquidation value of $1,000 per share. The dividends are payable on a semi-annual basis, commencing Edison International may, at its option, redeem its preferred stock in whole or in part during certain periods of time prior to each of the dividend reset dates at a price equal to $1,000 per share plus any accumulated and unpaid dividends. Edison International may also, at its option, redeem the preferred stocks in whole but not in part at a price equal to $1,020 per share plus any accumulated and unpaid dividends within a certain period of time following any change in the criteria rating agencies use that would have adverse effects on the equity credit attributed by rating agencies to the preferred stocks. The preferred stocks rank senior to Edison International's common stock with respect to dividends rights and distribution rights upon liquidation. The preferred stocks are not subject to any mandatory sinking fund, retirement fund, purchase fund or other similar provisions. Holders of the shares of the preferred stocks do not have the right to require Edison International to repurchase or redeem shares of the preferred stocks. Preferred and Preference Stock of Utility SCE's authorized shares are: $100 cumulative preferred – 12 million shares, $25 cumulative preferred – 24 million shares and preference with no par value – 50 million shares. There are no dividends in arrears for the preferred or preference shares. During 2020, SCE redeemed $120 million of cumulative preferred stock consisting of all of the outstanding shares of the 4.32% Series, 4.08% Series, 4.24% Series and the 4.78% Series at a price of $28.75, $25.50, $25.80 and $25.80, respectively. SCE recorded a $9 million loss on the redemption of the preferred stock as an adjustment to net income available to common stockholders. No preferred shares were issued or redeemed in the years ended December 31, 2022 and 2021. There is no sinking fund requirement for redemptions or repurchases of preferred shares. Shares of SCE's preference stock rank senior to SCE’s common stock with respect to dividend rights and distribution rights upon liquidation. Shares of SCE's preference stock are not convertible into shares of any other class or series of SCE's capital stock or any other security. SCE's outstanding preference shares are not subject to mandatory redemption and there is no sinking fund requirement for redemptions or repurchases of preference shares. Preference stocks are: Redemption Dividends Shares Price Declared December 31, (in millions, except shares and per share amounts) Outstanding per Share per Share 2022 2021 No par value: 3-month LIBOR + 4.199% Series E (cumulative) 350,000 $ 1,000.00 $ 65.110 $ 350 $ 350 5.10% Series G (cumulative) 88,004 2,500.00 127.500 220 220 5.75% Series H (cumulative) 110,004 2,500.00 143.750 275 275 5.375% Series J (cumulative) 130,004 2,500.00 134.375 325 325 5.45% Series K (cumulative) 120,004 2,500.00 136.250 300 300 5.00% Series L (cumulative) 190,004 2,500.00 125.000 475 475 SCE's preference stock 1,945 1,945 Less issuance costs (44) (44) Edison International's preference stock of utility $ 1,901 $ 1,901 Shares of Series E preference stock issued in 2012 may be redeemed at par, in whole or in part, on or after February 1, 2022. Dividends are payable at a floating rate from and including February 1, 2022. Shares of Series G, H, J, K and L preference stock, issued in 2013, 2014, 2015, 2016 and 2017, respectively, may be redeemed at par, in whole, but not in part, at any time prior to March 15, 2018, March 15, 2024, September 15, 2025, March 15, 2026 and June 26, 2022, respectively, if certain changes in tax or investment company law or interpretation (or applicable rating agency equity credit criteria for Series L only) occur and certain other conditions are satisfied. On or after March 15, 2018, March 15, 2024, September 15, 2025, March 15, 2026 and June 26, 2022, SCE may redeem the Series G, H, J, K and L shares, respectively, at par, in whole or in part. For shares of Series H, J and K preference stock, distributions will accrue and be payable at a floating rate from and including March 15, 2024, September 15, 2025 and March 15, 2026, respectively. Shares of Series G, H, J, K and L preference stock were issued to SCE Trust II, SCE Trust III, SCE Trust IV, SCE Trust V and SCE Trust VI, respectively, special purpose entities formed to issue trust securities as discussed in Note 3. During 2020, SCE redeemed $180 million of the outstanding shares of the Series G preference stock. SCE recorded a $6 million loss on the redemption of the preference stock as an adjustment to net income available to common stockholders. No preference stocks were issued or redeemed in the years ended December 31, 2022 and 2021.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
Accumulated Other Comprehensive Loss	Dec. 31, 2022
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Loss	Note 15. The changes in accumulated other comprehensive loss, net of tax, consist of: Edison International SCE Years ended December 31, (in millions) 2022 2021 2022 2021 Beginning balance $ (54) $ (69) $ (32) $ (41) Pension and PBOP: Other comprehensive income before reclassifications 35 7 17 4 Reclassified from accumulated other comprehensive loss 1 8 8 7 5 Change 43 15 24 9 Ending Balance $ (11) $ (54) $ (8) $ (32) 1 .

Other Income

Other Income	12 Months Ended
Other Income	Dec. 31, 2022
Other Income
Other Income	Note 16. Other income net of expenses is as follows: Years ended December 31, (in millions) 2022 2021 2020 SCE other income (expense): Equity allowance for funds used during construction $ 137 $ 118 $ 121 Increase in cash surrender value of life insurance policies and life insurance benefits 42 40 66 Interest income 80 3 20 Net periodic benefit income – non-service components 136 123 102 Civic, political and related activities and donations (42) (39) (42) Other (16) (12) (12) Total SCE other income 337 233 255 Other income (expense) of Edison International Parent and Other: Interest income 9 — — Net periodic benefit costs – non-service components (2) (2) (2) Other 4 6 (2) Total Edison International other income $ 348 $ 237 $ 251

Supplemental Cash Flows Informa

Supplemental Cash Flows Information	12 Months Ended
Supplemental Cash Flows Information	Dec. 31, 2022
Supplemental Cash Flows Information
Supplemental Cash Flows Information	Note 17. Supplemental cash flows information is: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Cash payments (receipts): Interest, net of amounts capitalized $ 1,001 $ 887 $ 836 $ 864 $ 760 $ 713 Income taxes, net (49) (88) (34) (49) (88) (50) Non-cash financing and investing activities: Dividends declared but not paid: Common stock 282 266 251 350 325 — Preference stock of SCE 8 11 11 8 11 11 SCE's accrued capital expenditures at December 31, 2022, 2021 and 2020 were $652 million, $668 million and $730 million, respectively. Accrued capital expenditures will be included as an investing activity in the consolidated statements of cash flow in the period paid.

Related-Party Transactions

Related-Party Transactions	12 Months Ended
Related-Party Transactions	Dec. 31, 2022
Related Party Transactions
Related-Party Transactions	Note 18. Related-Party Transactions Edison International and SCE provide and receive various services to and from its subsidiaries and affiliates. Services provided to Edison International by SCE are priced at fully loaded cost (i.e., direct cost of good or service and allocation of overhead cost). Specified administrative services performed by Edison International or SCE employees, such as payroll and employee benefit programs, are shared among all affiliates of Edison International. Costs are allocated based on one of the following formulas: percentage of time worked, equity in investment and advances, number of employees, or multi-factor (operating revenue, operating expenses, total assets and number of employees). Edison International allocates various corporate administrative and general costs to SCE and other subsidiaries using established allocation factors. For the years ended December 31, 2022, 2021, and 2020, SCE purchased wildfire liability insurance for premiums of $273 million, $185 million, and $176 million respectively, from Edison Insurance Services, Inc. ("EIS"), a wholly- owned subsidiary of Edison International. EIS fully reinsured the exposure for these policies through the commercial reinsurance market, with reinsurance limits and premiums equal to those of the insurance purchased by SCE, except for a contract for a premium of $93 million for the 12 months ending June 30, 2023 under which EIS provided insurance protection to SCE. SCE recorded the premium as insurance expense and recorded an equal amount of revenue due to customer funding through regulatory cost recovery mechanisms, therefore there was no earnings impact on SCE's consolidated statements of income. EIS recorded the premium as insurance revenue. On the Edison International consolidated statements of income, the EIS insurance revenue is eliminated with SCE's insurance expense, therefore the SCE customer revenues increased the earnings of Edison International. The related-party transactions included in SCE's consolidated balance sheets for wildfire-related insurance purchased from EIS and related expected insurance recoveries were as follows: December 31, (in millions) 2022 2021 Prepaid insurance 1 $ 106 $ 52 Long-term insurance receivable due from affiliate 334 — 1 Reflected in "Prepaid expenses" on SCE's consolidated balance sheets. The expense for wildfire-related insurance premiums paid to EIS were $213 million, $192 million, and $189 million for the years ended December 31, 2022, 2021, and 2020, respectively.

Schedule I - Condensed Financia

Schedule I - Condensed Financial Information of Parent	12 Months Ended
Schedule I - Condensed Financial Information of Parent	Dec. 31, 2022
Condensed Financial Information Disclosure [Abstract]
Schedule I - Condensed Financial Information of Parent	SCHEDULES SUPPLEMENTING FINANCIAL STATEMENTS EDISON INTERNATIONAL SCHEDULE I – CONDENSED FINANCIAL INFORMATION OF PARENT CONDENSED BALANCE SHEETS December 31, (in millions) 2022 2021 Assets: Cash and cash equivalents $ 4 $ 52 Other current assets 447 403 Total current assets 451 455 Investments in subsidiaries 19,922 18,924 Deferred income taxes 626 697 Other long-term assets 62 68 Total assets $ 21,061 $ 20,144 Liabilities and equity: Short-term debt $ 1,090 $ — Current portion of long-term debt 400 700 Other current liabilities 575 583 Total current liabilities 2,065 1,283 Long-term debt 2,981 2,438 Other long-term liabilities 394 535 Total equity 15,621 15,888 Total liabilities and equity $ 21,061 $ 20,144 EDISON INTERNATIONAL SCHEDULE I – CONDENSED FINANCIAL INFORMATION OF PARENT CONDENSED STATEMENTS OF INCOME For the Years Ended December 31, 2022, 2021 and 2020 (in millions) 2022 2021 2020 Interest income from affiliates $ 3 $ — $ 1 Operating, interest and other expenses 209 176 189 Loss before equity in earnings of subsidiaries (206) (176) (188) Equity in earnings of subsidiaries 867 956 851 Income before income taxes 661 780 663 Income tax benefit (56) (39) (76) Income from continuing operations 717 819 739 Preferred stock dividend requirements of Edison International 105 60 — Net income $ 612 $ 759 $ 739 CONDENSED STATEMENTS OF COMPREHENSIVE INCOME For the Years Ended December 31, 2022, 2021 and 2020 (in millions) 2022 2021 2020 Net income $ 717 $ 819 $ 739 Other comprehensive income, net of tax 43 15 — Comprehensive income $ 760 $ 834 $ 739 EDISON INTERNATIONAL SCHEDULE I – CONDENSED FINANCIAL INFORMATION OF PARENT CONDENSED STATEMENTS OF CASH FLOWS For the Years Ended December 31, 2022, 2021 and 2020 (in millions) 2022 2021 2020 Net cash provided by operating activities $ 1,133 $ 817 $ 1,171 Cash flows from financing activities: Long-term debt issued 945 — 400 Long-term debt issuance costs (6) — (3) Long-term debt repaid (700) — (400) Short-term debt issued 1,000 — 800 Short-term debt repaid — — (800) Common stock issued 13 32 912 Preferred stock issued — 1,977 — Payable due to affiliates (14) (13) 135 Commercial paper borrowing (repayments), net 89 (130) 129 Payments for stock-based compensation (8) (3) (3) Receipts for stock-based compensation 72 31 21 Common stock dividends paid (1,050) (988) (928) Preferred stock dividends paid (99) (35) — Net cash provided by financing activities 242 871 263 Capital contributions to affiliate (1,426) (1,639) (1,446) Dividends from affiliate 3 — — Net cash used in investing activities: (1,423) (1,639) (1,446) Net (decrease) increase in cash and cash equivalents (48) 49 (12) Cash and cash equivalents, beginning of year 52 3 15 Cash and cash equivalents, end of year $ 4 $ 52 $ 3 Note 1. Basis of Presentation The accompanying condensed financial statements of Edison International Parent should be read in conjunction with the consolidated financial statements and notes thereto of Edison International and subsidiaries ("Registrant") included in this Form 10-K. Edison International Parent's significant accounting policies are consistent with those of the Registrant, SCE and other wholly owned and controlled subsidiaries. Dividends Received Edison International Parent received cash dividends from SCE of $1.3 billion, $975 million and $1.3 billion in 2022, 2021 and 2020, respectively. Dividend Restrictions CPUC holding company rules require that SCE's dividend policy be established by SCE's Board of Directors on the same basis as if SCE were a stand-alone utility company, and that the capital requirements of SCE, as deemed to be necessary to meet SCE's electricity service obligations, shall receive first priority from the Boards of Directors of both Edison International and SCE. In addition, the CPUC regulates SCE's capital structure which limits the dividends it may pay to its shareholders. The common equity component of SCE's CPUC authorized capital structure is 52% on a weighted average basis over the January 1, 2023 to December 31, 2025 compliance period. This is unchanged from the January 1, 2020 to December 31, 2022 compliance period. The CPUC authorized capital structure differs from the capital structure calculated based on GAAP due to certain exclusions allowed by CPUC, including the impact of SCE's contributions to the Wildfire Insurance Fund under AB 1054. For further information, see "Business—SCE—Overview of Ratemaking Process" and "Business—Southern California Wildfires." In May 2020, the CPUC issued a decision on SCE's application to the CPUC for waiver of compliance with its equity ratio requirement, that allows SCE to exclude from its equity ratio calculations (i) net charges accrued in connection with the 2017/2018 Wildfire/Mudslide Events and (ii) debt issued for the purpose of paying claims related to the 2017/2018 Wildfire/Mudslide Events up to an amount equal to the net charges accrued in connection with the 2017/2018 Wildfire/Mudslide Events. With these exclusions, SCE was in compliance with its authorized capital structure for the compliance period from January 1, 2020 to December 31, 2022. The temporary exclusion lapsed on May 7, 2022. In April 2022, SCE filed another application requesting continued waiver of compliance with its equity ratio requirement. Under the CPUC's rules, SCE will not be deemed to be in violation of the equity ratio requirement while the waiver application is pending resolution. While the exclusion is in place, SCE is required to notify the CPUC if an adverse financial event reduces SCE's spot equity ratio by more than one percent from the level most recently filed with the CPUC in the proceeding. The last spot equity ratio SCE filed with the CPUC in the proceeding did not exclude the then $1.8 billion net charge and was 45.2% as of December 31, 2018 (at the time the common equity component of SCE's CPUC authorized capital structure was required to remain at or above 48% on a weighted average basis over the applicable 37-month period). SCE's spot equity ratio on December 31, 2018 would have been 48.7% had the $1.8 billion net charge at December 31, 2018 been excluded, therefore SCE will notify the CPUC if its spot ratio drops below 47.7% in any quarter. For further information, see "Notes to Consolidated Financial Statements—Note 12. Commitments and Contingencies—Contingencies—Southern California Wildfires and Mudslides." Note 2. Debt and Equity Financing Long-Term Debt At December 31, 2022, Edison International Parent had, $400 million of 2.95% senior notes due in 2023, $500 million of 3.55% senior notes due in 2024, $400 million of 4.95% senior notes and $400 million of 4.70% senior notes due in 2025, $600 million of 5.75% senior notes due in 2027, $550 million of 4.125% senior notes due in 2028 and $550 million 6.95% senior notes due in 2029. Credit Agreements and Short-Term Debt The following table summarizes the status of the credit facility at December 31, 2022: (in millions) Commitment $ 1,500 Outstanding borrowings 90 Amount available $ 1,410 In May 2022, Edison International Parent amended its revolving credit facility to extend the termination date to May 2026. The aggregate maximum principal amount under the Edison International Parent revolving credit facility may be increased up to $2.0 billion, provided that additional lender commitments are obtained. As of December 31, 2022, Edison International Parent has outstanding term loans of $600 million due in April 2023 and $400 million due in November 2023, each bearing interest at either an adjusted term SOFR plus 0.70% and 0.95% , respectively, or a base rate with no applicable margin. Edison International used the proceeds for general corporate purposes. The debt covenant in Edison International Parent's credit facility requires a consolidated debt to total capitalization ratio of less than or equal to 0.70 to 1. At December 31, 2022, Edison International's consolidated debt to total capitalization ratio was 0.64 to 1. Equity In the third quarter of 2022, Edison International filed a prospectus supplement and executed several distribution agreements with certain sales agents to establish an "at-the-market"("ATM") program, under which it may sell shares of its common stock having an aggregate sales price of up to $500 million. As of December 31, 2022, no sales had occurred and Edison International has no obligation to sell the remaining available shares. Edison International continued to settle its ongoing common stock requirements of various internal programs through issuance of new common stock. During the twelve months ended December 31, 2022, 1,253,049 shares of common stock were issued as stock compensation awards for net cash receipts of $57 million, 273,642 shares of new common stock were issued in lieu of distributing $18 million to shareholders opting to receive dividend payments in the form of additional common stock, 157,000 shares of common stock were purchased by employees through the 401(k) defined contribution savings plan for net cash receipts of $10 million as dividend payments, 109,750 shares of common stock were issued related to optional cash investments of $7 million and 36,912 shares of common stock were issued to employees through the ESPP for net cash receipts of $2 million. During the twelve months ended December 31, 2021, 629,092 shares of common stock were issued as stock compensation awards for net cash receipts of $25 million, 522,400 shares of common stock were purchased by employees through the 401(k) defined contribution savings plan for net cash receipts of $30 million, 293,031 shares of new common stock were issued in lieu of distributing $17 million to shareholders opting to receive dividend payments in the form of additional common stock and 26,475 shares of common stock related to optional cash investments of $2 million . Starting July 2021, the 401(k) defined contribution savings plan no longer offers Edison International's stock as an investment option to employees. Subsequent to the change, stock issued through the 401(k) defined contribution savings plan were dividend payments made in the form of additional common stock. Preferred Stock Issuance In 2021, Edison International issued 1,250,000 shares of 5.375% Fixed-Rate Reset Cumulative Perpetual Preferred Stock, Series A, and 750,000 shares of its 5.00% Fixed-Rate Reset Cumulative Perpetual Preferred Stock, Series B, each with a liquidation value of $1,000 per share. The dividends are payable on a semi-annual basis, commencing September 15, 2021 and March 15, 2022, respectively. The dividend rate will be reset every five years beginning on March 15, 2026 and March 15, 2027, respectively, to equal the then-current five-year U.S. Treasury rate plus a spread of 4.698% and 3.901% , respectively. The net proceeds of $2.0 billion were used to repay commercial paper borrowings and for general corporate purposes, including making a total of $900 million equity contribution to SCE. Note 3. Related-Party Transactions Edison International's Parent expense from services provided by SCE was $2 million in 2022, $2 million in 2021 and $2 million in 2020. Edison International Parent's interest expense from loans due to affiliates was $3 million in 2022, $5 million in 2021 and $4 million in 2020. Edison International Parent had current related-party receivables of $389 million and $361 million and current related-party payables of $166 million and $211 million at December 31, 2022 and 2021, respectively. Edison International Parent had long-term related-party receivables of $8 million and $52 million at December 31, 2022 and 2021, respectively, and long-term related-party payables of $130 million and $227 million at December 31, 2022 and 2021, respectively. Note 4. Contingencies For a discussion of material contingencies see "Notes to Consolidated Financial Statements—Note 8. Income Taxes" and "—Note 12. Commitments and Contingencies."

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2022
Summary of Significant Accounting Policies
Organization and Basis of Presentation	Organization and Basis of Presentation Edison International is the ultimate parent holding company of Southern California Edison Company ("SCE") and Edison Energy, LLC ("Edison Energy Group"). SCE is an investor-owned public utility primarily engaged in the business of supplying and delivering electricity to an approximately 50,000 square mile area of Southern California. Edison Energy Group is an indirect wholly-owned subsidiary of Edison International and a holding company for Edison Energy, LLC ("Edison Energy") which is engaged in the competitive business of providing decarbonization and energy solutions to commercial, institutional and industrial customers in North America and Europe. Edison Energy's business activities are currently not material to report as a separate business segment. These combined notes to the consolidated financial statements apply to both Edison International and SCE unless otherwise described. Edison International's consolidated financial statements include the accounts of Edison International, SCE, and other wholly owned and controlled subsidiaries. References to Edison International refer to the consolidated group of Edison International and its subsidiaries. References to "Edison International Parent and Other" refer to Edison International Parent and its competitive subsidiaries and "Edison International Parent" refer to Edison International on a stand-alone basis, not consolidated with its subsidiaries. SCE's consolidated financial statements include the accounts of SCE, its wholly owned and controlled subsidiaries and a variable interest entity of which SCE is the primary beneficiary, SCE Recovery Funding LLC. All intercompany transactions have been eliminated from the consolidated financial statements. Edison International's and SCE's accounting policies conform to accounting principles generally accepted in the United States of America ("GAAP"), including the accounting principles for rate-regulated enterprises, which reflect the ratemaking policies of the California Public Utility Commission ("CPUC") and the Federal Energy Regulatory Commission ("FERC"). SCE applies authoritative guidance for rate-regulated enterprises to the portion of its operations in which regulators set rates at levels intended to recover the estimated costs of providing service, plus a return on net investments in assets, or rate base. Regulators may also impose certain penalties or grant certain incentives. Due to timing and other differences in the collection of electric utility revenue, these principles require an incurred cost that would otherwise be charged to expense by a non-regulated entity to be capitalized as a regulatory asset if it is probable that the cost is recoverable through future rates; and conversely the principles require recording of a regulatory liability for amounts collected in rates to recover costs expected to be incurred in the future or amounts collected in excess of costs incurred and refundable to customers. In addition, SCE recognizes revenue and regulatory assets from alternative revenue programs, which enables the utility to adjust future rates in response to past activities or completed events, if certain criteria are met. SCE assesses, at the end of each reporting period, whether regulatory assets are probable of future recovery. See Note 11 for composition of regulatory assets and liabilities. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reported period. Actual results could differ from those estimates. Certain prior year amounts have been conformed to the current year's presentation, including separate presentation of common stock and preferred and preference stock dividends in SCE's consolidated statements of cash flows.
Cash, Cash Equivalents and Restricted Cash	Cash, Cash Equivalents and Restricted Cash Cash equivalents consist of investments in money market funds. Generally, the carrying value of cash equivalents equals the fair value, as these investments have original maturities of three months or less. The cash equivalents were as follows: Edison International SCE December 31, (in millions) 2022 2021 2022 2021 Money market funds $ 784 $ 329 $ 647 $ 230 Cash is temporarily invested until required for check clearing. Checks issued, but not yet paid by the financial institution, are reclassified from cash to accounts payable at the end of each reporting period. The following table sets forth the cash, cash equivalents and restricted cash included in the consolidated statements of cash flows: December 31, December 31, (in millions) 2022 2021 Edison International: Cash and cash equivalents $ 914 $ 390 Short-term restricted cash 1 3 4 Total cash, cash equivalents and restricted cash $ 917 $ 394 SCE: Cash and cash equivalents $ 766 $ 279 Short-term restricted cash 1 — 1 Total cash, cash equivalents and restricted cash $ 766 $ 280 1 Reflected in "Other current assets" on Edison International's and SCE's consolidated balance sheets.
Allowance for Uncollectible Accounts	Allowance for Uncollectible Accounts The allowance for uncollectible accounts is recorded based on SCE's estimate of expected credit losses and adjusted over the life of the receivables as needed. Since the customer base of SCE is concentrated in Southern California and exposes SCE to a homogeneous set of economic conditions, the allowance is measured on a collective basis on the historical amounts written-off, assessment of customer collectibility and current economic trends, including unemployment rates and likelihood of recession for the region. At December 31, 2022, this included the estimated impacts of the COVID-19 pandemic. The following table sets forth the changes in allowance for uncollectible accounts for SCE: (in millions) Customers All others Total Balance at December 31, 2019 $ 35 $ 14 $ 49 Current period provision for uncollectible accounts Included in operation and maintenance expenses in earning activities 1 36 9 45 Included in operation and maintenance expenses in cost-recovery activities 2 15 — 15 Deferred to regulatory memorandum accounts 105 — 105 Write-offs, net of recoveries (16) (10) (26) Balance at December 31, 2020 $ 175 $ 13 $ 188 Current period provision for uncollectible accounts Included in operation and maintenance expenses in earning activities 1 33 11 44 Included in operation and maintenance expenses in cost-recovery activities 2 74 — 74 Deferred to regulatory memorandum accounts 17 — 17 Write-offs, net of recoveries (6) (8) (14) Balance at December 31, 2021³ $ 293 $ 16 $ 309 Current period provision for uncollectible accounts Included in operation and maintenance expenses in earning activities 1 71 11 82 Included in operation and maintenance expenses in cost-recovery activities 2,4 58 — 58 Deferred to regulatory memorandum accounts 4 (18) — (18) Write-offs, net of recoveries (70) (7) (77) Balance at December 31, 2022³ $ 334 $ 20 $ 354 1 Earning activities is one of SCE's disaggregated revenue sources. See Note 7 for further details. 2 Cost-recovery activities is one of SCE's disaggregated revenue sources. See Note 7 for further details. This portion of costs from the allowance for uncollectible expenses is recovered through the residential uncollectibles balancing account. 3 Approximately $7 million and $116 million of allowance for uncollectible accounts are included in long-term "Receivables" on SCE's consolidated balance sheets as of December 31, 2022 and December 31, 2021, respectively. 4 Represents current year changes in the allowance for uncollectible accounts and excludes authorized recovery of previously deferred balances.
Inventory	Inventory SCE's inventory is primarily composed of materials, supplies and spare parts, and generally stated at weighted average cost.
Emission Allowances and Energy Credits	Emission Allowances and Energy Credits SCE is allocated greenhouse gas ("GHG") allowances annually which it is then required to sell into quarterly auctions. GHG proceeds from the auctions are recorded as a regulatory liability to be refunded to customers. SCE purchases GHG allowances in quarterly auctions or from counterparties to satisfy its GHG emission compliance obligations and recovers such costs of GHG allowances from customers. GHG allowances held for use are classified as "Other current assets" on the consolidated balance sheets and are stated, similar to an inventory method, at the lower of weighted average cost or market. SCE will evaluate GHG allowances for impairment upon a triggering event that would indicate SCE might not recover the full cost of an allowance. SCE had GHG allowances held for use of $87 million and $47 million at December 31, 2022 and 2021, respectively. GHG emission obligations were $55 million and $34 million at December 31, 2022 and 2021, respectively, and are classified as "Other current liabilities" on the consolidated balance sheets. SCE is allocated low carbon fuel standard ("LCFS") credits which it sells to market participants. Proceeds from the sales, net of selling fees and program administration expenses, are recorded in a balancing account to be refunded to eligible customers. SCE's net proceeds from the sale of these LCFS credits were $218 million and $193 million and are classified as "Regulatory liabilities" on the consolidated balance sheets at December 31, 2022 and 2021, respectively.
Property, Plant and Equipment	Property, Plant and Equipment SCE plant additions, including replacements and betterments, are capitalized. Direct material and labor and indirect costs such as construction overhead, administrative and general costs, pension and benefits, and property taxes are capitalized as part of plant additions. The CPUC authorizes a capitalization rate for each of the indirect costs which are allocated to each project based on either labor or total costs. Estimated useful lives authorized by the CPUC in the 2021 General Rate Case ("GRC") and weighted average useful lives of SCE's property, plant and equipment, are as follows: Weighted Average Estimated Useful Lives Useful Lives Generation plant 10 years to 55 years 39 years Distribution plant 20 years to 67 years 50 years Transmission plant 30 years to 65 years 53 years General plant and other 5 years to 60 years 20 years Depreciation of utility property, plant and equipment is computed on a straight-line, remaining-life basis. SCE's depreciation expense was $2.5 billion, $2.0 billion and $1.8 billion for 2022, 2021 and 2020, respectively. Depreciation expense stated as a percent of average original cost of depreciable utility plant was, on a composite basis, 4.2%, 3.7% and 3.6% for 2022, 2021 and 2020, respectively. The original costs of retired property are charged to accumulated depreciation. See Note 2 for further information. Nuclear fuel for the Palo Verde Nuclear Generating Station ("Palo Verde") is recorded as utility plant (nuclear fuel in the fabrication and installation phase is recorded as construction in progress) in accordance with CPUC ratemaking procedures. Palo Verde nuclear fuel is amortized using the units of production method. Allowance for funds used during construction ("AFUDC") represents the estimated cost of debt and equity funds that finance utility-plant construction and is capitalized during certain plant construction. AFUDC is recovered in rates through depreciation expense over the useful life of the related asset. AFUDC equity represents a method to compensate SCE for the estimated cost of equity used to finance utility plant additions and is recorded as part of construction in progress. AFUDC equity was $137 million, $118 million and $121 million in 2022, 2021 and 2020, respectively, and is reflected in "Other income." AFUDC debt was $53 million, $50 million and $53 million in 2022, 2021 and 2020, respectively and is reflected as a reduction of "Interest expense." Major Maintenance Major maintenance costs for SCE's facilities and equipment are expensed as incurred.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Impairments of long-lived assets are evaluated based on a review of estimated future cash flows expected to be generated whenever events or changes in circumstances indicate that the carrying amount of such investments or assets may not be recoverable. If the carrying amount of a long-lived asset exceeds expected future cash flows, undiscounted and without interest charges, an impairment loss is recognized in the amount of the excess of fair value over the carrying amount. Fair value is determined via market, cost and income-based valuation techniques, as appropriate. Accounting principles for rate-regulated enterprises also require recognition of an impairment loss if it becomes probable that the regulated utility will abandon a plant investment, or if it becomes probable that the cost of a recently completed plant will be disallowed, either directly or indirectly, for ratemaking purposes and a reasonable estimate of the amount of the disallowance can be made. In September 2022, the CPUC approved the settlement agreement between SCE and The Utility Reform Network for SCE's Customer Service Re-platform ("CSRP") proceeding filed in 2021 for expenditures incurred through April 2021. As a result of the settlement agreement, SCE recorded a $47 million ($34 million after-tax) impairment of property, plant and equipment, reflected in "Impairment, net of other (income)" in the consolidated statements of income. In August 2021, as a result of adoption of 2021 GRC, SCE recorded $79 million ($47 million after-tax) in impairment charges related to disallowed historical capital expenditures of pole replacements the CPUC determined were performed prematurely in 2021. The impairment is included in "Impairment, net of other (income)" in the consolidated statements of income. As of December 31, 2022 and 2021, SCE has $177 million and $186 million in assets recorded in property, plant and equipment in relation to restoration costs related to the 2017/2018 Wildfire/Mudslide Events, respectively, which may not be recoverable. These assets would be impaired if the restoration costs are permanently disallowed by the CPUC in future cost recovery proceedings. For further details, see Note 12.
Initial and annual contributions to the wildfire insurance fund established pursuant to California Assembly Bill 1054 (the "Wildfire Insurance Fund" and "AB 1054")	Initial and annual contributions to the wildfire insurance fund established pursuant to California Assembly Bill 1054 (the "Wildfire Insurance Fund" and "AB 1054") Edison International and SCE accounted for the contributions to the Wildfire Insurance Fund similarly to prepaid insurance. No period of coverage was provided in AB 1054, therefore expense is being allocated to periods ratably based on an estimated period of coverage. At December 31, 2022 and 2021, Edison International and SCE had a $2.2 billion and a $2.4 billion long-term asset, respectively, as well as a $204 million current asset for both years, reflected as "Wildfire Insurance Fund contributions" in their consolidated balance sheets for the initial $2.4 billion contribution made during 2019 and the present value of annual contributions SCE committed to make to the Wildfire Insurance Fund, reduced by amortization. At December 31, 2022 and 2021, long-term liabilities of $536 million and $620 million, respectively, have been reflected in "Other deferred credits and other long-term liabilities" for the present value of unpaid contributions. Contributions were discounted to the present value using US treasury interest rates at the date SCE committed to participate in the Wildfire Insurance Fund. In 2022 and 2021, the asset was amortized based on an estimated period of coverage of 15 years. All expenses related to the contributions are being reflected in "Wildfire Insurance Fund Expense" in the consolidated statements of income. Changes in the estimated period of coverage provided by the Wildfire Insurance Fund could lead to material changes in future expense recognition. In estimating the period of coverage, Edison International and SCE used Monte Carlo Monte Carlo the expected life of the Wildfire Insurance Fund remained 15 years from the date SCE committed to participate in the Wildfire Insurance Fund. Edison International and SCE will assess the Wildfire Insurance Fund contribution assets for impairment in the event that a participating utility's electrical equipment is found to be the substantial cause of a catastrophic wildfire, based on the ability of SCE to benefit from the coverage provided by the Wildfire Insurance Fund in an amount equal to the recorded assets.
Nuclear Decommissioning and Asset Retirement Obligations	Nuclear Decommissioning and Asset Retirement Obligations The fair value of a liability for an asset retirement obligation ("ARO") is recorded in the period in which it is incurred, including a liability for the fair value of a conditional ARO, if the fair value can be reasonably estimated even though uncertainty exists about the timing and/or method of settlement. When an ARO liability is initially recorded, SCE capitalizes the cost by increasing the carrying amount of the related long-lived asset. For each subsequent period, the liability is increased for accretion expense and the capitalized cost is depreciated over the useful life of the related asset. SCE has not recorded an ARO for assets that are expected to operate indefinitely or where SCE cannot estimate a settlement date (or range of potential settlement dates). As such, ARO liabilities are not recorded for certain retirement activities, including certain hydroelectric facilities. The following table summarizes the changes in SCE's ARO liability: December 31, (in millions) 2022 2021 Beginning balance $ 2,772 $ 2,930 Accretion 1 143 157 Revisions 28 (77) Liabilities settled (189) (238) Ending balance $ 2,754 $ 2,772 1 An ARO represents the present value of a future obligation. Accretion is an increase in the liability to account for the time value of money resulting from discounting. AROs related to decommissioning of SCE's nuclear power facilities are based on site-specific studies conducted as part of each Nuclear Decommissioning Cost Triennial Proceeding ("NDCTP") conducted before the CPUC. Revisions of an ARO are established for updated site-specific decommissioning cost estimates. The ARO for decommissioning SCE's San Onofre Nuclear Generating Station ("San Onofre") and Palo Verde nuclear power facilities is $2.3 billion as of December 31, 2022. The liability to decommission SCE's nuclear power facilities is based on a 2020 decommissioning study, filed as part of the 2021 NDCTP, for San Onofre Unit 1, 2 and 3 and a 2019 decommissioning study for Palo Verde, with revisions to the cost estimate in 2020. SCE records an ARO regulatory liability as a result of timing differences between the recognition of costs and the recovery of costs through the ratemaking process. For further information, see Note 11. Decommissioning of San Onofre Unit 1 began in 1999 and the transfer of spent nuclear fuel from Unit 1 to dry cask storage in the Independent Spent Fuel Storage Installation ("ISFSI") 1 was completed in 2005. Major decommissioning work for Unit 1 has been completed except for certain underground work. Decommissioning of San Onofre Units 2 and 3 began in June 2013 and the transfer of spent nuclear fuel from San Onofre Units 2 and 3 to dry cask storage in the two ISFSIs was completed in August 2020. In October 2019, the California Coastal Commission approved SCE's application for a Coastal Development Permit, the principal discretionary permit required to start major decommissioning activities at San Onofre Units 2 and 3. In August 2020, SCE commenced, and is currently conducting, major decommissioning activities in accordance with the terms of the permit. Decommissioning costs, which are recovered through customer rates over the term of each nuclear facility's operating license, are recorded as a component of depreciation expense, with a corresponding credit to the ARO regulatory liability. Due to regulatory recovery of SCE's nuclear decommissioning expense, prudently incurred costs for nuclear decommissioning activities do not affect SCE's earnings. Amortization of the ARO asset (included within the unamortized nuclear investment) and accretion of the ARO liability are deferred as decreases to the ARO regulatory liability account, resulting in no impact on earnings. SCE has collected in rates amounts for the future decommissioning of its nuclear assets and has placed those amounts in independent trusts. Amounts collected in rates in excess of the ARO liability are classified as regulatory liabilities. Changes in the estimated costs, timing of decommissioning or the assumptions underlying these estimates could cause material revisions to the estimated total cost to decommission. SCE currently estimates that it will spend approximately $6.3 billion through 2080 to decommission its nuclear facilities. This estimate is based on SCE's decommissioning cost methodology used for ratemaking purposes, escalated at rates ranging from 2.3% to 7.5% (depending on the cost element) annually. These costs are expected to be funded from independent decommissioning trusts. SCE estimates annual after-tax earnings on the decommissioning funds of 1.6% to 4.9% dependent on asset class. If the assumed return on trust assets is not earned or costs escalate at higher rates, SCE expects that additional funds needed for decommissioning will be recoverable through future rates, subject to a reasonableness review. See Note 10 for further information. Due to regulatory recovery of SCE's nuclear decommissioning expense, prudently incurred costs for nuclear decommissioning activities do not affect SCE's earnings. SCE's nuclear decommissioning costs are subject to CPUC review through the triennial regulatory proceedings. SCE's nuclear decommissioning trust investments primarily consist of fixed income investments that are classified as available-for-sale and equity investments. Due to regulatory mechanisms, investment earnings and realized gains and losses have no impact on earnings. Unrealized gains and losses on decommissioning trust funds, including impairment, increase or decrease the trust assets and the related regulatory asset or liability and have no impact on electric utility revenue or decommissioning expense. SCE reviews each fixed income security for impairment on the last day of each month. If the fair value on the last day of the month is less than the amortized cost for that security, SCE impairs the disclosed amortized cost. If the fair value is greater or less than the carrying value for that security at the time of sale, SCE recognizes a related realized gain or loss, respectively.
Deferred Financing Costs	Deferred Financing Costs Debt premium, discount and issuance expenses incurred in connection with obtaining financing are deferred and amortized on a straight-line basis. Under CPUC ratemaking procedures, SCE's debt reacquisition expenses are amortized over the remaining life of the reacquired debt or, if refinanced, the life of the new debt. SCE had unamortized losses on reacquired debt of $109 million and $121 million at December 31, 2022 and 2021, respectively, reflected as long-term "Regulatory assets" in the consolidated balance sheets. In addition, Edison International and SCE had debt issuance costs related to issuances of long-term debt of $178 million and $165 million at December 31, 2022 and $153 million and $143 million at December 31, 2021, respectively. These costs are recorded as an offset to long-term debt. Amortization of deferred financing costs charged to interest expense is as follows: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Amortization of deferred financing costs charged to interest expense $ 37 $ 34 $ 32 $ 31 $ 29 $ 27
Revenue Recognition	Revenue Recognition Revenue is recognized by Edison International and SCE when a performance obligation to transfer control of the promised goods is satisfied or when services are rendered to customers. This typically occurs when electricity is delivered to customers, which includes amounts for services rendered but unbilled at the end of a reporting period. SCE's Revenue from Contracts with Customers Provision of Electricity SCE principally generates revenue through supplying and delivering electricity to its customers. Rates charged to customers are based on tariff rates, approved by the CPUC and FERC. Starting with SCE's 2021 GRC, revenue will be authorized through quadrennial GRC proceedings, which are intended to provide SCE a reasonable opportunity to recover its costs and earn a return on its CPUC-jurisdictional rate base. The CPUC sets an annual revenue requirement for the base year and the remaining three years are set by a methodology established in the GRC proceeding. Revenue was previously authorized by the CPUC in triennial GRC proceedings. As described above, SCE also earns revenue, with no return, to recover costs for power procurement, certain wildfire related expenses and other activities. Revenue is authorized by the FERC through a formula rate which is intended to provide SCE a reasonable opportunity to recover transmission capital and operating costs that are prudently incurred, including a return on its FERC-jurisdictional rate base. Under the operation of the formula rate, transmission revenue is updated to actual cost of service annually. For SCE's electricity sales for both residential and non-residential customers, SCE satisfies the performance obligation of delivering electricity over time as the customers simultaneously receive and consume the delivered electricity. Energy sales are typically on a month-to-month implied contract for transmission, distribution and generation services. Revenue is recognized over time as the energy is supplied and delivered to customers and the respective revenue is billed and paid on a monthly basis. CPUC and FERC rates decouple authorized revenue from the volume of electricity sales and the price of energy procured so that SCE receives revenue equal to amounts authorized by the relevant regulatory agencies. As a result, the volume of electricity sold to customers and specific customer classes does not have a direct impact on SCE's financial results. See Note 7 for further information on SCE's revenue. Sales and Use Taxes SCE bills certain sales and use taxes levied by state or local governments to its customers. Included in these sales and use taxes are franchise fees, which SCE pays to various municipalities (based on contracts with these municipalities) in order to operate within the limits of the municipality. SCE bills these franchise fees to its customers based on a CPUC-authorized rate. These franchise fees, which are required to be paid regardless of SCE's ability to collect from the customer, are accounted for on a gross basis. SCE's franchise fees billed to customers were $172 million, $147 million and $131 million for the years ended December 31, 2022, 2021, and 2020, respectively. When SCE acts as an agent for sales and use tax, the taxes are accounted for on a net basis. Amounts billed to and collected from customers for these taxes are remitted to the taxing authorities and are not recognized as electric utility revenue. SCE's Alternative Revenue Programs The CPUC and FERC have authorized additional, alternative revenue programs which adjust billings for the effects of broad external factors. These alternative revenue programs allow SCE to recover costs that SCE has been authorized to pass on to customers, including costs of certain operations and maintenance activities, costs to purchase electricity and natural gas, and to fund public purpose, demand response, and customer energy efficiency programs. In general, revenue is recognized for these alternative revenue programs at the time the costs are incurred. SCE begins recognizing revenues for these programs when a program has been established by an order from either the CPUC or FERC that allows for automatic adjustment of future rates, the amount of revenue for the period is objectively determinable and probable of recovery and the revenue will be collected within 24 months following the end of the annual period.
Power Purchase Agreements	Power Purchase Agreements SCE enters into power purchase agreements ("PPAs") in the normal course of business. A power purchase agreement may be considered a variable interest in a variable interest entity ("VIE"). If SCE is the primary beneficiary in the VIE, SCE should consolidate the VIE. None of SCE's PPAs resulted in consolidation at December 31, 2022 and 2021. See Note 3 for further discussion of PPAs that are considered variable interests. A PPA may also contain a lease for accounting purposes. See "Leases" below and Note 12 and Note 13 for further discussion of SCE's PPAs. A PPA that does not contain a lease may be classified as a derivative which is recorded at fair value on the consolidated balance sheets. These PPAs may be eligible for an election to designate as a normal purchase or sale, which is accounted for on an accrual basis as an executory contract. PPAs that do not meet the above classifications are accounted for on an accrual basis.
Derivatives Instruments	Derivative Instruments SCE records derivative instruments on its consolidated balance sheets as either assets or liabilities measured at fair value unless otherwise exempted from derivative treatment as normal purchases or sales. The normal purchases and sales exception requires, among other things, physical delivery in quantities expected to be used or sold over a reasonable period in the normal course of business. Realized gains and losses from SCE's derivative instruments are expected to be recovered from or refunded to customers through regulatory mechanisms and, therefore, SCE's fair value changes have no impact on purchased power expense or earnings. SCE does not use hedge accounting for derivative transactions due to regulatory accounting treatment. Where SCE's derivative instruments are subject to a master netting agreement and certain criteria are met, SCE presents its derivative assets and liabilities on a net basis on its consolidated balance sheets. In addition, derivative positions are offset against margin and cash collateral deposits. The results of derivative activities are recorded as part of cash flows from operating activities on the consolidated statements of cash flows. See Note 6 for further information on derivative instruments.
Leases	Leases A lease is defined as a contract, or part of a contract, that conveys the right to control the use of identified assets for a period of time in exchange for consideration. An entity controls the use when it has a right to obtain substantially all of the benefits from the use of the identified asset and has the right to direct the use of the asset. SCE determines if an arrangement is a lease at contract inception. For all classes of underlying assets, except battery storage assets which were first contracted in 2020 and for which each component will be separately accounted for, SCE includes both the lease and non-lease components as a single component and accounts for it as a lease. Lease liabilities are recognized based on the present value of the lease payments over the lease term at the commencement date. SCE calculates and uses the rate implicit in the lease if the information is readily available or if not available, SCE uses its incremental borrowing rate in determining the present value of lease payments. Incremental borrowing rates are comprised of underlying risk-free rates and secured credit spreads relative to first mortgage bonds with like tenors of lease term durations. Lease right-of-use ("ROU") assets are based on the liability, subject to adjustments, such as lease incentives. The ROU assets also include any lease payments made at or before the commencement date. SCE excludes variable lease payments in measuring lease assets and lease liabilities, other than those that depend on an index or a rate or are in substance fixed payments. SCE's lease terms include options to extend or terminate the lease when it is reasonably certain that such options will be exercised. SCE elected to exclude from the balance sheet short-term lease contracts of one year or less. SCE enters into power purchase agreements that may contain leases. This occurs when a power purchase agreement designates a specific power plant, SCE obtains substantially all of the economic benefits from the use of the plant and has the right to direct the use of the plant. SCE also enters into a number of agreements to lease property and equipment in the normal course of business, primarily related to vehicles, office space and other equipment. See Note 13 for further discussion of SCE's contracts that are classified as operating and finance leases. Edison International Parent and Other's leases primarily relate to Edison Energy Group. The leases for Edison International Parent and Other are immaterial to Edison International.
Stock-Based Compensation	Stock-Based Compensation Stock options, performance shares, deferred stock units and restricted stock units have been granted under Edison International's long-term incentive compensation programs. For equity awards that are settled in common stock, Edison International either issues new common stock, or uses a third party to purchase shares from the market and deliver such shares for the settlement of the awards. Stock options, performance shares, deferred stock units and restricted stock units are settled in common stock. For awards that are otherwise settled entirely in common stock, Edison International substitutes cash awards to the extent necessary to satisfy applicable tax withholding obligations or government levies. Stock-based compensation expense is recognized, net of estimated forfeitures, on a straight-line basis over the requisite service period based on estimated fair values. For equity awards paid in common stock, fair value is determined at the grant date. For equity awards that have market conditions defined in the grants, expense is recognized based on grant date fair value if the requisite service period is fulfilled. However, with respect to the portion of the performance shares payable in common stock that are subject to financial performance conditions defined in the grants, the number of performance shares expected to be earned is subject to revision and updated at each reporting period, with a related adjustment to compensation expense. For awards granted to retirement-eligible participants, stock compensation expense is recognized on a prorated basis over the initial year. For awards granted to participants who become eligible for retirement during the requisite service period, stock compensation expense is recognized over the period between the date of grant and the date the participant first becomes eligible for retirement. Edison International and SCE estimate the number of awards that are expected to vest rather than account for forfeitures when they occur. Share-based payments may create a permanent difference between the amount of compensation expense recognized for book and tax purposes. The tax impact of this permanent difference is recognized in earnings in the period it is created. See Note 9 for further information. Employee Stock Purchase Plan The Edison International Employee Stock Purchase Plan ("ESPP"), effective beginning July 2021, allows eligible employees to make purchases of Edison International’s common stock. The maximum aggregate numbers of shares that may be issued under the ESPP is 3,000,000 shares. Eligible employees may authorize payroll deductions of between 1% and 10% of their compensation, up to a maximum of $25,000, to purchase shares of common stock at 97% of the market price on the last day of each six months offering period. The ESPP is considered noncompensatory and stock issuances under the ESPP are recorded directly in equity.
Dividends	SCE Dividends CPUC holding company rules require that SCE's dividend policy be established by SCE's Board of Directors on the same basis as if SCE were a stand-alone utility company, and that the capital requirements of SCE, as deemed to be necessary to meet SCE's electricity service obligations, shall receive first priority from the Boards of Directors of both Edison International and SCE. In addition, the CPUC regulates SCE's capital structure which limits the dividends it may pay to its shareholders. The common equity component of SCE's CPUC authorized capital structure is 52% on a weighted average basis over the January 1, 2023 to December 31, 2025 compliance period ("Capital Structure Compliance Period"). This is unchanged from the January 1, 2020 to December 31, 2022 compliance period. The CPUC authorized capital structure differs from the capital structure calculated based on GAAP due to certain exclusions allowed by CPUC, including the impact of SCE's contributions to the Wildfire Insurance Fund under AB 1054. For further information, see "Business—SCE—Overview of Ratemaking Process" and "Business—Southern California Wildfires." In May 2020, the CPUC issued a decision on SCE's application to the CPUC for waiver of compliance with its equity ratio requirement, that allows SCE to exclude from its equity ratio calculations (i) net charges accrued in connection with the 2017/2018 Wildfire/Mudslide Events and (ii) debt issued for the purpose of paying claims related to the 2017/2018 Wildfire/Mudslide Events up to an amount equal to the net charges accrued in connection with the 2017/2018 Wildfire/Mudslide Events. With these exclusions, SCE was in compliance with its authorized capital structure for the compliance period from January 1, 2020 to December 31, 2022. The temporary exclusion lapsed on May 7, 2022. In April 2022, SCE filed another application requesting continued waiver of compliance with its equity ratio requirement. Under the CPUC's rules, SCE will not be deemed to be in violation of the equity ratio requirement while the waiver application is pending resolution. While the exclusion is in place, SCE is required to notify the CPUC if an adverse financial event reduces SCE's spot equity ratio by more than one percent from the level most recently filed with the CPUC in the proceeding. The last spot equity ratio SCE filed with the CPUC in the proceeding did not exclude the then $1.8 billion net charge and was 45.2% as of December 31, 2018 (at the time the common equity component of SCE's CPUC authorized capital structure was required to remain at or above 48% on a weighted average basis over the applicable 37-month period). SCE's spot equity ratio on December 31, 2018 would have been 48.7% had the $1.8 billion net charge at December 31, 2018 been excluded, therefore SCE will notify the CPUC if its spot ratio drops below 47.7% in any quarter. For further information, see "Note 12. Commitments and Contingencies—Contingencies—Southern California Wildfires and Mudslides." SCE monitors its compliance with the CPUC's equity ratio requirement based on the weighted average of the common equity component of SCE's CPUC authorized capital structure over the Capital Structure Compliance Period using its actual capital structure from the beginning of the Capital Structure Compliance Period through the reporting date together with forecasted performance and expected financing activities for the remainder of the Capital Structure Compliance Period. SCE expects to be compliant with its CPUC authorized capital structure at the end of its current compliance period, December 31, 2025. SCE's ability to declare and pay common dividends may be restricted under the terms of its outstanding series of preference stock. For further information see As a California corporation, SCE's ability to pay dividends is also governed by the California General Corporation Law. California law requires that for a dividend to be declared: (a) retained earnings must equal or exceed the proposed dividend, or (b) immediately after the dividend is made, the value of the corporation's assets must exceed the value of its liabilities plus amounts required to be paid, if any, in order to liquidate stock senior to the shares receiving the dividend. Additionally, a California corporation may not declare a dividend if it is, or as a result of the dividend would be, likely to be unable to meet its liabilities as they mature. Prior to declaring dividends, SCE's Board of Directors evaluates available information, including when applicable, information pertaining to the 2017/2018 Wildfire/Mudslide Events, to ensure that the California law requirements for the declarations are met. On February 23, 2023, SCE declared a dividend to Edison International of $350 million. The timing and amount of future dividends are also dependent on a number of other factors including SCE's requirements to fund other obligations and capital expenditures, and its ability to access the capital markets and generate operating cash flows and earnings. If SCE incurs significant costs related to catastrophic wildfires and is unable to recover such costs through insurance, the Wildfire Insurance Fund (for fires after July 12, 2019), or from customers or is unable to access capital markets on reasonable terms, SCE may be limited in its ability to pay future dividends to Edison International and its preference shareholders. Edison International Dividend In December 2022, Edison International declared a 5% increase to the annual dividend rate from $2.80 per share to $2.95 per share. On February 23, 2023, Edison International declared a dividend of $0.7375 per share to be paid on April 30, 2023. Edison International intends to maintain its target payout ratio of 45% – 55% of SCE's core earnings.
Earnings Per Share	Earnings Per Share Edison International computes earnings per common share ("EPS") using the two-class method, which is an earnings allocation formula that determines EPS for each class of common stock and participating security. Edison International's participating securities are stock-based compensation awards, payable in common shares, which earn dividend equivalents on an equal basis with common shares once the awards are vested. See Note 9 and Note 14 for further information. EPS attributable to Edison International common shareholders was computed as follows: Years ended December 31, (in millions, except per-share amounts) 2022 2021 2020 Basic earnings per share: Net income attributable to common shareholders $ 612 $ 759 $ 739 Net income available to common shareholders $ 612 $ 759 $ 739 Weighted average common shares outstanding 381 380 373 Basic earnings per share $ 1.61 $ 2.00 $ 1.98 Diluted earnings per share: Net income attributable to common shareholders $ 612 $ 759 $ 739 Net income available to common shareholders $ 612 $ 759 $ 739 Income impact of assumed conversions 1 1 — Net income available to common shareholders and assumed conversions $ 613 $ 760 $ 739 Weighted average common shares outstanding 381 380 373 Incremental shares from assumed conversions 2 — 1 Adjusted weighted average shares – diluted 383 380 374 Diluted earnings per share $ 1.60 $ 2.00 $ 1.98 In addition to the participating securities discussed above, Edison International also may award stock options, which are payable in common shares and are included in the diluted earnings per share calculation. Stock option awards to purchase 5,839,549, 10,239,501, and 9,066,753 shares of common stock for the years ended December 31, 2022, 2021, and 2020, respectively, were outstanding, but were not included in the computation of diluted earnings per share because the effect would have been antidilutive.
Income Taxes	Income Taxes Edison International and SCE estimate their income taxes for each jurisdiction in which they operate. This involves estimating current period tax expense along with assessing temporary differences resulting from differing treatment of items (such as depreciation) for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included in the consolidated balance sheets. Income tax expense includes the current tax liability from operations and the change in deferred income taxes during the year. Interest income, interest expense, and penalties associated with income taxes are generally reflected in "Income tax benefit" on the consolidated statements of income. Edison International's eligible subsidiaries are included in Edison International's consolidated federal income tax and combined state tax returns. Edison International has tax-allocation and payment agreements with certain of its subsidiaries. Pursuant to an income tax-allocation agreement approved by the CPUC, SCE's tax liability is computed as if it filed its federal and state income tax returns on a separate return basis.
Business Acquisition	Business Acquisition In October 2022, Edison Energy acquired 100% of Alfa Energy Ltd., an international energy and sustainability consultancy based in the United Kingdom, for total consideration of $22 million, including the estimated fair value of contingent consideration up to 14 million British pounds ( $17 million U.S. dollars at December 31, 2022) that the sellers will be entitled to if certain financial thresholds are achieved after 3 years . As a result of the acquisition, Edison Energy recognized goodwill of $16 million, which is included in "Other long-term assets" on Edison International's consolidated balance sheets as of December 31, 2022.
New Accounting Guidance	New Accounting Guidance Accounting Guidance Adopted In November 2021, the Financial Accounting Standards Board ("FASB") issued an accounting standards update to require business entities that account for transactions with a government by providing additional details about the transactions and their accounting impact. Edison International and SCE have adopted this standard on January 1, 2022 using the prospective adoption approach. The adoption of this standard did not have a material impact on Edison International's and SCE's annual disclosure.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
Summary of Significant Accounting Policies (Tables)	Dec. 31, 2022
Summary of Significant Accounting Policies
Cash Equivalents	The cash equivalents were as follows: Edison International SCE December 31, (in millions) 2022 2021 2022 2021 Money market funds $ 784 $ 329 $ 647 $ 230
Cash, Cash Equivalents and Restricted Cash	The following table sets forth the cash, cash equivalents and restricted cash included in the consolidated statements of cash flows: December 31, December 31, (in millions) 2022 2021 Edison International: Cash and cash equivalents $ 914 $ 390 Short-term restricted cash 1 3 4 Total cash, cash equivalents and restricted cash $ 917 $ 394 SCE: Cash and cash equivalents $ 766 $ 279 Short-term restricted cash 1 — 1 Total cash, cash equivalents and restricted cash $ 766 $ 280 1 Reflected in "Other current assets" on Edison International's and SCE's consolidated balance sheets.
Changes in Allowance for Uncollectible Accounts	The following table sets forth the changes in allowance for uncollectible accounts for SCE: (in millions) Customers All others Total Balance at December 31, 2019 $ 35 $ 14 $ 49 Current period provision for uncollectible accounts Included in operation and maintenance expenses in earning activities 1 36 9 45 Included in operation and maintenance expenses in cost-recovery activities 2 15 — 15 Deferred to regulatory memorandum accounts 105 — 105 Write-offs, net of recoveries (16) (10) (26) Balance at December 31, 2020 $ 175 $ 13 $ 188 Current period provision for uncollectible accounts Included in operation and maintenance expenses in earning activities 1 33 11 44 Included in operation and maintenance expenses in cost-recovery activities 2 74 — 74 Deferred to regulatory memorandum accounts 17 — 17 Write-offs, net of recoveries (6) (8) (14) Balance at December 31, 2021³ $ 293 $ 16 $ 309 Current period provision for uncollectible accounts Included in operation and maintenance expenses in earning activities 1 71 11 82 Included in operation and maintenance expenses in cost-recovery activities 2,4 58 — 58 Deferred to regulatory memorandum accounts 4 (18) — (18) Write-offs, net of recoveries (70) (7) (77) Balance at December 31, 2022³ $ 334 $ 20 $ 354 1 Earning activities is one of SCE's disaggregated revenue sources. See Note 7 for further details. 2 Cost-recovery activities is one of SCE's disaggregated revenue sources. See Note 7 for further details. This portion of costs from the allowance for uncollectible expenses is recovered through the residential uncollectibles balancing account. 3 Approximately $7 million and $116 million of allowance for uncollectible accounts are included in long-term "Receivables" on SCE's consolidated balance sheets as of December 31, 2022 and December 31, 2021, respectively. 4 Represents current year changes in the allowance for uncollectible accounts and excludes authorized recovery of previously deferred balances.
Property, plant and equipment useful lives	Estimated useful lives authorized by the CPUC in the 2021 General Rate Case ("GRC") and weighted average useful lives of SCE's property, plant and equipment, are as follows: Weighted Average Estimated Useful Lives Useful Lives Generation plant 10 years to 55 years 39 years Distribution plant 20 years to 67 years 50 years Transmission plant 30 years to 65 years 53 years General plant and other 5 years to 60 years 20 years
Reconciliation of the Changes in ARO Liability	The following table summarizes the changes in SCE's ARO liability: December 31, (in millions) 2022 2021 Beginning balance $ 2,772 $ 2,930 Accretion 1 143 157 Revisions 28 (77) Liabilities settled (189) (238) Ending balance $ 2,754 $ 2,772 1 An ARO represents the present value of a future obligation. Accretion is an increase in the liability to account for the time value of money resulting from discounting.
Amortization of Deferred Financing Costs	Amortization of deferred financing costs charged to interest expense is as follows: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Amortization of deferred financing costs charged to interest expense $ 37 $ 34 $ 32 $ 31 $ 29 $ 27
EPS Attributable to Edison International Common Shareholders	EPS attributable to Edison International common shareholders was computed as follows: Years ended December 31, (in millions, except per-share amounts) 2022 2021 2020 Basic earnings per share: Net income attributable to common shareholders $ 612 $ 759 $ 739 Net income available to common shareholders $ 612 $ 759 $ 739 Weighted average common shares outstanding 381 380 373 Basic earnings per share $ 1.61 $ 2.00 $ 1.98 Diluted earnings per share: Net income attributable to common shareholders $ 612 $ 759 $ 739 Net income available to common shareholders $ 612 $ 759 $ 739 Income impact of assumed conversions 1 1 — Net income available to common shareholders and assumed conversions $ 613 $ 760 $ 739 Weighted average common shares outstanding 381 380 373 Incremental shares from assumed conversions 2 — 1 Adjusted weighted average shares – diluted 383 380 374 Diluted earnings per share $ 1.60 $ 2.00 $ 1.98

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
Property, Plant and Equipment (Tables)	Dec. 31, 2022
Property, Plant and Equipment
Schedule of Property, Plant, and Equipment	SCE's utility property, plant and equipment included in the consolidated balance sheets is composed of the following: December 31, (in millions) 2022 2021 Distribution $ 32,754 $ 30,821 Transmission 18,106 17,016 Generation 3,880 3,769 General plant and other 6,121 6,108 Accumulated depreciation (12,260) (11,407) 48,601 46,307 Construction work in progress 4,551 4,067 Nuclear fuel, at amortized cost 122 123 Total utility property, plant and equipment $ 53,274 $ 50,497
Schedule of Jointly Owned Utility Projects	The following is SCE's investment in each asset as of December 31, 2022: Construction Plant in Work in Accumulated Nuclear Fuel Net Book Ownership (in millions) Service Progress Depreciation (at amortized cost) Value Interest Transmission systems: Eldorado $ 351 $ 107 $ (56) $ — $ 402 77 % Pacific Intertie 354 2 (82) — 274 50 % Generating station: Palo Verde (nuclear) 2,180 56 (1,653) 122 705 16 % Total $ 2,885 $ 165 $ (1,791) $ 122 $ 1,381

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	12 Months Ended
Variable Interest Entities (Tables)	Dec. 31, 2022
Variable Interest Entities
Summary of SCE Recovery Funding LLC on balance sheets	December 31, December 31, (in millions) 2022 2021 Other current assets $ 45 $ 19 Regulatory assets: non-current 834 325 Regulatory liabilities: current 33 14 Current portion of long-term debt 29 14 Other current liabilities 4 1 Long-term debt 1 809 314 1 The bondholders have no recourse to SCE. Balance is net of unamortized debt issuance costs.
Summary of the Trusts' Income Statements	The following table provides a summary of the trusts' income statements: Years ended December 31, (in millions) Trust II Trust III Trust IV Trust V Trust VI 2022 Dividend income $ 11 $ 16 $ 17 $ 16 $ 24 Dividend distributions 11 16 17 16 24 2021 Dividend income $ 20 $ 16 $ 17 $ 16 $ 24 Dividend distributions 20 16 17 16 24 2020 Dividend income $ 20 $ 16 $ 17 $ 16 $ 24 Dividend distributions 20 16 17 16 24

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
Fair Value Measurements (Tables)	Dec. 31, 2022
Fair Value Measurements
Fair Value by Level within the Fair Value Hierarchy	December 31, 2022 Netting and (in millions) Level 1 Level 2 Level 3 Collateral 1 Total Assets at fair value Derivative contracts $ — 392 67 (218) $ 241 Money market funds and other 647 22 — — 669 Nuclear decommissioning trusts: Stocks 2 1,610 — — — 1,610 Fixed Income 3 941 1,281 — — 2,222 Short-term investments, primarily cash equivalents 137 64 — — 201 Subtotal of nuclear decommissioning trusts 4 2,688 1,345 — — 4,033 Total assets 3,335 1,759 67 (218) 4,943 Liabilities at fair value Derivative contracts — 116 4 (119) 1 Total liabilities — 116 4 (119) 1 Net assets $ 3,335 $ 1,643 $ 63 $ (99) $ 4,942 December 31, 2021 Netting and (in millions) Level 1 Level 2 Level 3 Collateral 1 Total Assets at fair value Derivative contracts $ — $ 26 $ 49 $ (31) $ 44 Money market funds and other 230 23 — — 253 Nuclear decommissioning trusts: Stocks 2 1,972 — — — 1,972 Fixed Income 3 1,083 1,607 — — 2,690 Short-term investments, primarily cash equivalents 102 125 — — 227 Subtotal of nuclear decommissioning trusts 4 3,157 1,732 — — 4,889 Total assets 3,387 1,781 49 (31) 5,186 Liabilities at fair value Derivative contracts — 42 5 (47) — Total liabilities — 42 5 (47) — Net assets $ 3,387 $ 1,739 $ 44 $ 16 $ 5,186 1 Represents the netting of assets and liabilities under master netting agreements and cash collateral. 2 Approximately 74% and 75% of SCE's equity investments were in companies located in the United States at December 31, 2022 and 2021, respectively. 3 Includes corporate bonds, which were diversified by the inclusion of collateralized mortgage obligations and other asset backed securities of $49 million and $30 million at December 31, 2022 and 2021, respectively. 4 Excludes net payables of $85 million and $19 million at December 31, 2022 and 2021, respectively, which consist of interest and dividend receivables as well as receivables and payables related to SCE's pending securities sales and purchases.
Summary of level 3 fair value changes	The following table sets forth a summary of changes in SCE's fair value of Level 3 net derivative assets and liabilities: Years ended December 31, (in millions) 2022 2021 Fair value of net assets at beginning of period $ 44 $ 108 Sales (8) (2) Settlements (54) (63) Total realized/unrealized gains 1 81 1 Fair value of net assets at end of period $ 63 $ 44 1 Due to regulatory mechanisms, SCE's realized and unrealized gains and losses are recorded as regulatory assets and liabilities. There were no material transfers into or out of Level 3 during 2022 and 2021.
Valuation techniques and significant inputs	The following table sets forth SCE's valuation techniques and significant unobservable inputs used to determine fair value for significant Level 3 assets and liabilities: Fair Value Significant Weighted (in millions) Valuation Unobservable Range Average Assets Liabilities Technique Input (per MWh) (per MWh) Congestion revenue rights December 31, 2022 $ 67 $ 4 Auction prices CAISO CRR auction prices $(7.91) - $3,856.67 $ 1.64 December 31, 2021 49 5 Auction prices CAISO CRR auction prices (18.87) - 43.03 1.46
Long-term debt fair value	The carrying value and fair value of Edison International's and SCE's long-term debt (including current portion of long-term debt) are as follows: December 31, 2022 December 31, 2021 Carrying Fair Carrying Fair (in millions) Value 1 Value 2 Value 1 Value 2 Edison International $ 29,639 $ 26,824 $ 25,247 $ 27,718 SCE 26,258 23,469 22,110 24,375 1 2 .

Debt and Credit Agreements (Tab

Debt and Credit Agreements (Tables)	12 Months Ended
Debt and Credit Agreements (Tables)	Dec. 31, 2022
Debt and Credit Agreements
Long-term Debt	December 31, (in millions) 2022 2021 Edison International Parent and Other: Debentures and notes: 2023 – 2029 (2.95% to 6.95%) $ 3,400 $ 3,150 Current portion of long-term debt (400) (700) Unamortized debt discount/premium and issuance costs, net (19) (13) Total Edison International Parent and Other 2,981 2,437 SCE: First and refunding mortgage bonds: 2023 – 2052 (0.70% to 6.05%) 23,900 20,314 Pollution-control bonds: 2023 – 2035 (1.45% to 2.63%) 752 752 Debentures and notes: 2029 – 2053 (5.06% to 6.65%) 306 306 Senior secured recovery bonds 1 2028 – 2046 (0.86% to 3.24%) 849 333 Other long-term debt 2 600 518 Current portion of long-term debt (2,214) (377) Unamortized debt discount/premium and issuance costs, net (149) (113) Total SCE 24,044 21,733 Total Edison International $ 27,025 $ 24,170 1 The senior secured recovery bonds are payable only from and secured by the Recovery Property at SCE Recovery Funding LLC, and do not constitute a debt or other legal obligation of, or interest in, SCE or any of its affiliates, except for SCE Recovery Funding LLC. For further details, see Note 3. 2 2022 amount represents a term loan due in 2024 with an interest rate of adjusted term secured overnight financing rate ("SOFR") plus 0.90% . 2021 amount represent short-term obligations refinanced on a long-term basis subsequent to December 31, 2021.
Long-term Debt Maturities	Edison International and SCE long-term debt maturities over the next five years are as follows: Edison (in millions) International SCE 2023 $ 2,614 $ 2,214 2024 2,680 2,180 2025 2,030 1,230 2026 381 381 2027 1,981 1,381
Summary for Status of Credit Facilities	(in millions, except for rates) Termination SOFR Outstanding Outstanding Amount Borrower date plus (bps) Commitment borrowings letters of credit available Edison International Parent 1, 3 May 2026 128 $ 1,500 $ 90 $ — $ 1,410 SCE 2, 3 May 2026 108 3,350 195 431 2,724 Total Edison International $ 4,850 $ 285 $ 431 $ 4,134 1 At December 31, 2022, Edison International Parent had $90 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 4.92% . At December 31, 2021 Edison International Parent did no t have any outstanding commercial paper. 2 At December 31, 2022 and December 31, 2021, SCE had $195 million and $601 million outstanding commercial paper, net of discount, at a weighted-average interest rate of 5.20% and 0.45% , respectively. 3 Proceeds are used to support commercial paper borrowings and general corporate purposes. The aggregate maximum principal amount under the SCE and Edison International Parent revolving credit facilities may be increased up to $4.0 billion and $2.0 billion, respectively, provided that additional lender commitments are obtained.

Derivative Instruments (Tables)

Derivative Instruments (Tables)	12 Months Ended
Derivative Instruments (Tables)	Dec. 31, 2022
Derivative Instruments
Schedule of derivatives financial position	December 31, 2022 Derivative Assets Derivative Liabilities (in millions) Short-Term 1 Long-Term Subtotal Short-Term 3 Long-Term Subtotal Net Assets Commodity derivative contracts Gross amounts recognized $ 459 $ — $ 459 $ 120 $ — $ 120 $ 339 Gross amounts offset in the consolidated balance sheets (119) — (119) (119) — (119) — Cash collateral received 4 (99) (99) — (99) Net amounts presented in the consolidated balance sheets $ 241 $ — $ 241 $ 1 $ — $ 1 $ 240 December 31, 2021 Derivative Assets Derivative Liabilities (in millions) Short-Term 1 Long-Term 2 Subtotal Short-Term Long-Term Subtotal Net Assets Commodity derivative contracts Gross amounts recognized $ 70 $ 6 $ 76 $ 46 $ 2 $ 48 $ 28 Gross amounts offset in the consolidated balance sheets (30) (2) (32) (30) (2) (32) — Cash collateral posted 4 — — — (16) — (16) 16 Net amounts presented in the consolidated balance sheets $ 40 $ 4 $ 44 $ — $ — $ — $ 44 1 Included in "Other current assets" on Edison International's and SCE's consolidated balance sheets. 2 Included in "Other long-term assets" on Edison International's and SCE's consolidated balance sheets. 3 Included in "Other current liabilities" on Edison International's and SCE's consolidated balance sheets. 4 At December 31, 2022, SCE received cash collateral and accrued the obligation to return cash collateral totaled $99 million, all of which was offset against derivative assets. At December 31, 2021, SCE posted $65 million of cash, of which $16 million was offset against derivative liabilities and $49 million was reflected in "Other current assets" on the consolidated balance sheets.
Components of Economic Hedging Activity	The following table summarizes the components of SCE's economic hedging activity: Years ended December 31, (in millions) 2022 2021 2020 Realized gains $ 178 $ 200 $ 87 Unrealized gains (losses) 310 (75) 17
Notional Volumes of Derivative Instruments	The following table summarizes the notional volumes of derivatives used for SCE's economic hedging activities: Economic Hedges Unit of December 31, Commodity Measure 2022 2021 Electricity options, swaps and forwards GWh 1,022 1,869 Natural gas options, swaps and forwards Bcf 42 58 Congestion revenue rights GWh 44,028 33,216

Revenue (Tables)

Revenue (Tables)	12 Months Ended
Revenue (Tables)	Dec. 31, 2022
Revenue
Summary of Revenue	The following table is a summary of SCE's revenue: 2022 2021 2020 Cost- Cost- Cost- Earning Recovery Total Earning Recovery Total Earning Recovery Total (in millions) Activities Activities Consolidated Activities Activities Consolidated Activities Activities Consolidated Revenues from contracts with customers 1,2 $ 8,327 8,433 $ 16,760 $ 7,523 $ 6,824 14,347 $ 6,920 $ 5,539 $ 12,459 Alternative revenue programs and other operating revenue 3 681 (269) 412 349 178 527 548 539 1,087 Total operating revenue $ 9,008 $ 8,164 $ 17,172 $ 7,872 $ 7,002 $ 14,874 $ 7,468 $ 6,078 $ 13,546 1 SCE recorded CPUC revenue based on an annual revenue requirement set by a methodology established in the GRC proceeding and FERC revenue authorized through a formula rate. For further information, see Note 1. 2 At December 31, 2022 and 2021, SCE's receivables related to contracts from customers were $2.3 billion and $2.3 billion, which included accrued unbilled revenue of $638 million and $794 million, respectively. 3 Includes differences between amounts billed and authorized levels for both the CPUC and FERC.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2022
Income Taxes
Components of Income Tax (Benefit) Expense	The components of income tax (benefit) expense by location of taxing jurisdiction are: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Current: Federal $ 2 $ — $ 13 $ — $ — $ 12 State 13 (179) (22) 2 (45) (26) 15 (179) (9) 2 (45) (14) Deferred: Federal (103) 83 (230) (44) 83 (207) State (74) (40) (66) (67) (21) (56) (177) 43 (296) (111) 62 (263) Total $ (162) $ (136) $ (305) $ (109) $ 17 $ (277)
Components of Net Accumulated Deferred Income Tax Liability	Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Current: Federal $ 2 $ — $ 13 $ — $ — $ 12 State 13 (179) (22) 2 (45) (26) 15 (179) (9) 2 (45) (14) Deferred: Federal (103) 83 (230) (44) 83 (207) State (74) (40) (66) (67) (21) (56) (177) 43 (296) (111) 62 (263) Total $ (162) $ (136) $ (305) $ (109) $ 17 $ (277)
Summary of Net Operating Loss and Tax Credit Carryforwards	The amounts of net operating loss and tax credit carryforwards (after-tax) are as follows: Edison International SCE December 31, 2022 Loss Credit Loss Credit (in millions) Carryforwards Carryforwards Carryforwards Carryforwards Expire in 2023 $ 10 $ — $ 6 $ — Expire between 2024 to 2027 26 — 25 — Expire between 2029 to 2042 1,670 544 870 60 No expiration date 1 1,529 10 1,450 — Total $ 3,235 $ 554 $ 2,351 $ 60 1 Under the Tax Cut and Jobs Act signed into law on December 22, 2017 ("Tax Reform"), that it was an event vs. net operating losses generated after December 31, 2017 can carryforward indefinitely.
Reconciliation of Income Tax Expense	The table below provides a reconciliation of income tax expense computed at the federal statutory income tax rate to the income tax provision: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Income from operations before income taxes $ 662 $ 789 $ 566 $ 845 $ 952 $ 665 Provision for income tax at federal statutory rate of 21% 139 166 119 177 200 140 Increase (decrease) in income tax from: State tax, net of federal benefit (70) (47) (61) (57) (33) (52) Property-related (219) (233) (320) (219) (233) (320) Change related to uncertain tax position 1 — (147) (15) — (37) (19) Wildfire related charges 2 — 31 — — 31 — Average rate assumption method ("ARAM") adjustment 3 — 87 — — 87 — Corporate-owned life insurance cash surrender value (9) (8) (8) (9) (8) (8) Other (3) 15 (20) (1) 10 (18) Total income tax (benefit) expense $ (162) $ (136) $ (305) $ (109) $ 17 $ (277) Effective tax rate (24.5) % (17.2) % (53.9) % (12.9) % 1.8 % (41.7) % 1 In 2021, Edison International and SCE recognized tax benefits related to a settlement with the California Franchise Tax Board "FTB" for tax years 2007 – 2012. See further discussion in Tax Disputes below. In 2020, Edison International and SCE recognized tax expense and benefit, respectively, primarily due to the re-measurement of uncertain tax positions related to the 2010 – 2012 California state tax filings currently under audit. 2 Relates to the non-tax deductible portions of the SED Agreement (as defined in Note 12). See Note 12 for further discussion under 2017/2018 Wildfire/Mudslide Events. 3 In July 2021, SCE received the IRS' response to its private letter ruling request, regarding the scope of the deferred tax normalization requirements and the computations required to comply with the average rate assumption method. As a result, SCE's estimate changed and a cumulative true-up of $87 million reduction in tax benefits was recorded in the third quarter of 2021, for the period of January 1, 2018 to June 30, 2021.
Reconciliation of Unrecognized Tax Benefits	The following table provides a reconciliation of unrecognized tax benefits: Edison International SCE (in millions) 2022 2021 2020 2022 2021 2020 Balance at January 1, $ 613 $ 679 $ 370 $ 340 $ 320 $ 282 Tax positions taken during the current year: Increases 54 53 55 54 53 56 Tax positions taken during a prior year: Increases 1 — 3 274 — 1 4 Decreases 2 (21) (118) (20) (20) (29) (22) Settlements with taxing authorities 3 — (4) — — (5) — Balance at December 31, $ 646 $ 613 $ 679 $ 374 $ 340 $ 320 1 Edison International recorded favorable tax positions in 2020 in connection with the Edison Mission Energy bankruptcy that required a revaluation of the reserve for uncertain tax positions. 2 Decrease in 2021 was related to re-measurement as a result of a settlement with the FTB for tax years 2007 – 2012. 3 In 2021, Edison International reached a settlement with the FTB for tax years 2007 – 2012.
Schedule of Interest and Penalties Related to Income Tax Liabilities	The total amount of accrued interest and penalties related to income tax liabilities are: Edison International SCE December 31, (in millions) 2022 2021 2022 2021 Accrued interest and penalties $ — $ — $ 23 $ 20 The net after-tax interest and penalties recognized in income tax (benefit) expense are: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Net after-tax interest and penalties tax (benefit) expense $ — $ (41) $ 4 $ 2 $ (2) $ 6

Compensation and Benefit Plans

Compensation and Benefit Plans (Tables)	12 Months Ended
Compensation and Benefit Plans (Tables)	Dec. 31, 2022
Pension and Other Postretirement Benefits
Employee Savings Plan Employer Contributions	Edison International SCE (in millions) Years ended December 31, 2022 $ 103 $ 101 2021 97 96 2020 93 92
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	The following table summarizes total expense and tax benefits associated with stock-based compensation: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Stock-based compensation expense 1 Stock options $ 13 $ 16 $ 15 $ 7 $ 8 $ 7 Performance shares 13 9 5 6 4 2 Restricted stock units 14 12 8 9 8 4 Other 2 2 1 — — — Total stock-based compensation expense $ 42 $ 39 $ 29 $ 22 $ 20 $ 13 Income tax benefits related to stock-based compensation expense $ 9 $ 4 $ 4 $ 5 $ 3 $ 3 1 Reflected in "Operation and maintenance" on Edison International's and SCE's consolidated statements of income.
Black-Sholes Option-Pricing Model Assumptions	Years ended December 31, 2022 2021 2020 Expected terms (in years) 5.0 5.4 5.2 Risk-free interest rate 1.6% - 4.1% 1.1% - 1.3% 0.4% - 0.6% Expected dividend yield 4.0% - 5.0% 4.1% - 4.8% 4.2% - 5.0% Weighted average expected dividend yield 4.0% 4.5% 4.7% Expected volatility 27.8% - 28.6% 26.9% - 27.1% 24.9% - 26.9% Weighted average volatility 27.8% 26.9% 25.0%
Summary of Stock Options Activity	The following is a summary of the status of Edison International's stock options: Weighted Average Remaining Aggregate Exercise Contractual Intrinsic Value Shares Price Term (years) (in millions) Edison International: Outstanding at December 31, 2021 12,354,826 $ 62.78 Granted 909,504 63.67 Forfeited or expired (223,836) 64.89 Exercised 1 (1,156,938) 54.16 Outstanding at December 31, 2022 11,883,556 63.64 5.43 Vested and expected to vest at December 31, 2022 11,538,210 63.73 5.35 $ 30 Exercisable at December 31, 2022 8,074,165 $ 64.94 4.31 $ 17 SCE: Outstanding at December 31, 2021 6,180,154 $ 62.03 Granted 470,852 63.51 Forfeited or expired (143,235) 64.83 Exercised 1 (810,294) 53.78 Affiliate transfers, net 100,155 66.09 Outstanding at December 31, 2022 5,797,632 63.31 5.45 Vested and expected to vest at December 31, 2022 5,620,440 63.40 5.38 $ 17 Exercisable at December 31, 2022 3,849,057 $ 64.64 4.28 $ 9 1 Edison International and SCE recognized tax benefits of $5 million and $3 million, respectively, from stock options exercised in 2022.
Schedule of Unrecognized Compensation Expense	At December 31, 2022, total unrecognized compensation cost related to stock options and the weighted average period the cost is expected to be recognized are as follows: Edison International SCE Unrecognized compensation cost, net of expected forfeitures (in millions) $ 12 $ 6 Weighted average period (in years) 1.8 1.8
Supplemental Data on Stock-based Compensation	The following is a summary of supplemental data on stock options: Edison International SCE Years ended December 31, (in millions, except per award amounts) 2022 2021 2020 2022 2021 2020 Weighted average grant date fair value per option granted $ 9.92 $ 7.26 $ 8.18 $ 9.92 $ 7.30 $ 8.16 Fair value of options vested 8 3 2 5 3 2 Value of options exercised 17 8 9 12 6 7
Summary of Nonvested Share Activity	The following is a summary of the status of Edison International's nonvested performance shares: Equity Awards Weighted Average Shares Fair Value Edison International: Nonvested at December 31, 2021 262,808 $ 61.92 Granted 265,916 67.88 Forfeited (17,643) 64.68 Vested (108,251) 67.55 Nonvested at December 31, 2022 402,830 $ 64.22 SCE: Nonvested at December 31, 2021 137,807 $ 61.50 Granted 138,254 67.74 Forfeited (12,565) 65.60 Vested (54,487) 67.37 Affiliate transfers, net 1,064 59.25 Nonvested at December 31, 2022 210,073 $ 63.93
Summary of Nonvested Restricted Stock Units Activity	The following is a summary of the status of Edison International's nonvested restricted stock units: Edison International SCE Weighted Average Weighted Average Grant Date Grant Date Shares Fair Value Shares Fair Value Nonvested at December 31, 2021 546,155 $ 59.44 344,932 $ 58.45 Granted 298,558 63.58 218,721 63.58 Forfeited (24,780) 60.42 (19,073) 60.37 Vested (121,751) 62.76 (62,034) 62.91 Affiliate transfers, net — — 5,789 57.64 Nonvested at December 31, 2022 698,182 $ 60.60 488,335 $ 60.13
Pension Plans
Pension and Other Postretirement Benefits
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan	Information on pension plan assets and benefit obligations for continuing and discontinued operations is shown below. Edison International SCE Years ended December 31, (in millions) 2022 2021 2022 2021 Change in projected benefit obligation Projected benefit obligation at beginning of year $ 4,171 $ 4,476 $ 3,694 $ 3,984 Service cost 120 130 115 126 Interest cost 111 103 97 92 Actuarial gain (589) (245) (503) (246) Benefits paid (289) (293) (244) (262) Projected benefit obligation at end of year $ 3,524 $ 4,171 $ 3,159 $ 3,694 Change in plan assets Fair value of plan assets at beginning of year $ 4,296 $ 4,171 $ 4,061 $ 3,940 Actual return on plan assets (575) 368 (544) 348 Employer contributions 30 50 2 35 Benefits paid (289) (293) (244) (262) Fair value of plan assets at end of year 3,462 4,296 3,275 4,061 Funded status at end of year $ (62) $ 125 $ 116 $ 367 Amounts recognized in the consolidated balance sheets consist of 1 Long-term assets $ 139 $ 384 $ 128 $ 384 Current liabilities (26) (26) (2) (2) Long-term liabilities (175) (233) (10) (15) $ (62) $ 125 $ 116 $ 367 Amounts recognized in accumulated other comprehensive loss consist of: Net loss 1 $ 17 74 8 12 Amounts recognized as a regulatory liability (139) (395) (139) (395) Accumulated benefit obligation at end of year $ 3,401 $ 3,947 $ 3,049 $ 3,491 Pension plans with plan assets in excess of an accumulated benefit obligation: Projected benefit obligation 3,524 4,171 3,159 3,694 Accumulated benefit obligation 3,401 3,947 3,049 3,491 Fair value of plan assets 3,462 4,296 3,275 4,061 Weighted average assumptions used to determine obligations at end of year: Discount rate 5.36 % 2.75 % 5.36 % 2.75 % Rate of compensation increase 4.00 % 4.00 % 4.00 % 4.00 % 1 The SCE liability excludes a long-term payable due to Edison International Parent of $93 million and $132 million at December 31, 2022 and 2021, respectively, related to certain SCE postretirement benefit obligations transferred to Edison International Parent. SCE's accumulated other comprehensive loss of $8 million and $12 million at December 31, 2022 and 2021, excludes net losses of $3 million and $32 million related to these benefits, respectively.
Expense Components for Plans	Net periodic pension expense components are: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Service cost $ 120 $ 130 $ 121 $ 118 $ 127 $ 119 Non-service cost (benefit) Interest cost 111 103 124 101 95 114 Expected return on plan assets (227) (222) (215) (215) (211) (203) Settlement costs 4 — — 4 — — Amortization of prior service cost — 1 2 — 1 1 Amortization of net loss 5 11 10 2 7 7 Regulatory adjustment 6 25 16 6 25 16 Total non-service benefit 1 (101) (82) (63) (102) (83) (65) Total expense recognized $ 19 $ 48 $ 58 $ 16 $ 44 $ 54 1 Included in "Other income" on Edison International's and SCE's consolidated income statements. For further details, see Note 16.
Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income	Other changes in pension plan assets and benefit obligations recognized in other comprehensive income: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Net (gain) loss $ (45) $ (10) $ 11 $ (24) $ (5) $ 9 Settlement charges (4) — — (4) — — Amortization of net loss (8) (11) (10) (5) (7) (7) Total (gain) loss recognized in other comprehensive income (57) (21) 1 (33) (12) 2 Total recognized in expense and other comprehensive income $ (38) $ 27 $ 59 $ (17) $ 32 $ 56
Schedule of Assumptions Used	Edison International and SCE used the following weighted average assumptions to determine pension expense: Years ended December 31, 2022 2021 2020 Discount rate 2.75 % 2.38 % 3.11 % Rate of compensation increase 4.00 % 4.00 % 4.10 % Expected long-term return on plan assets 5.50 % 5.50 % 6.00 % Interest crediting rate for cash balance account Starting rate 3.12 % 3.03 % 3.61 % Ultimate rate 4.50 % 4.50 % 5.00 % Year ultimate rate is reached 2026 2025 2025
Schedule of Expected Benefit Payments	The following benefit payments, which reflect service rendered and expected future service, are expected to be paid: Edison (in millions) International SCE 2023 $ 310 $ 269 2024 314 274 2025 313 276 2026 321 282 2027 308 276 2028 – 2032 1,428 1,291
Schedule of Pension Plan Assets by Hierarchy Levels	December 31, 2022 (in millions) Level 1 Level 2 NAV 1 Total U.S. government and agency securities 2 $ 281 $ 293 $ — $ 574 Corporate stocks 3 227 3 — 230 Corporate bonds 4 — 973 — 973 Common/collective funds 5 — — 658 658 Partnerships/joint ventures 6 — — 613 613 Other investment entities 7 — — 63 63 Registered investment companies 8 206 — 159 365 Interest-bearing cash 14 — — 14 Other — 48 7 55 Total $ 728 $ 1,317 $ 1,500 $ 3,545 Receivables and payables, net (83) Combined net plan assets available for benefits 3,462 SCE's share of net plan assets $ 3,275 December 31, 2021 (in millions) Level 1 Level 2 NAV 1 Total U.S. government and agency securities 2 $ 217 $ 918 $ — $ 1,135 Corporate stocks 3 466 4 — 470 Corporate bonds 4 — 815 — 815 Common/collective funds 5 — — 964 964 Partnerships/joint ventures 6 — — 688 688 Other investment entities 7 — — 110 110 Registered investment companies 8 57 — 31 88 Interest-bearing cash 8 — — 8 Other — 45 — 45 Total $ 748 $ 1,782 $ 1,793 $ 4,323 Receivables and payables, net (27) Combined net plan assets available for benefits 4,296 SCE's share of net plan assets $ 4,061 1 These investments are measured at fair value using the net asset value per share practical expedient and have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the net plan assets available for benefits. 2 Level 1 U.S. government and agency securities are U.S. treasury bonds and notes. Level 2 primarily relates to the Federal National Mortgage Association and the Federal Home Loan Mortgage Corporation. 3 Corporate stocks are diversified. At December 31, 2022 and 2021, respectively, performance for actively managed separate accounts is primarily benchmarked against the Russell Indexes ( 36% and 44% ) and Morgan Stanley Capital International (MSCI) index ( 64% and 56% ). 4 Corporate bonds are diversified. At December 31, 2022 and 2021, respectively, this category includes $67 million and $61 million for collateralized mortgage obligations and other asset backed securities. 5 The common/collective assets are invested in equity index funds that seek to track performance of the Standard and Poor's 500 Index ( 41% at both December 31, 2022 and 2021). 10% are invested on Russell 1000 indexes at December 31, 2021. In addition, at December 31, 2022 and 2021, respectively, 46% and 38% of the assets in this category are in index funds which seek to track performance in the MSCI All Country World Index ex-US and 11% and 9% of this category are in non-index U.S. equity fund, which is actively managed. 6 At December 31, 2022 and 2021, respectively, 76% and 62% are invested in private equity funds with investment strategies that include branded consumer products and clean technology companies, 18% and 17% are invested in ABS including distressed mortgages and commercial and residential loans, 2% and 3% are invested in a broad range of financial assets in all global markets. 15% are invested in publicly traded fixed income securities at December 31, 2021. 7 At December 31, 2022, 64% are invested in domestic mortgage backed securities and 36% in high yield debt securities, respectively. At December 31, 2021, 71% are invested in emerging market equity securities and 20% in domestic mortgage backed securities, respectively. 8 At December 31, 2022, 56% are invested in Level 1 corporate bond fund, 21% in fixed income fund used for cash management and 22% in US equity fund, respectively. At December 31, 2021, 63% were invested in Level 1 registered investment companies that primarily consisted of a global equity mutual fund which seeks to outperform the MSCI World Total Return Index and 35% on fixed income fund used for cash management.
Postretirement Benefits Other Than Pensions
Pension and Other Postretirement Benefits
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan	Edison International SCE Years ended December 31, (in millions) 2022 2021 2022 2021 Change in benefit obligation Benefit obligation at beginning of year $ 1,904 $ 2,073 $ 1,895 $ 2,064 Service cost 34 40 34 40 Interest cost 56 52 55 52 Actuarial gain (598) (190) (596) (190) Plan participants' contributions 29 29 29 29 Benefits paid (94) (100) (94) (100) Benefit obligation at end of year $ 1,331 $ 1,904 $ 1,323 $ 1,895 Change in plan assets Fair value of plan assets at beginning of year $ 2,772 $ 2,717 $ 2,772 $ 2,717 Actual return on assets (527) 119 (527) 119 Employer contributions 7 7 7 7 Plan participants' contributions 29 29 29 29 Benefits paid (94) (100) (94) (100) Fair value of plan assets at end of year 2,187 2,772 2,187 2,772 Funded status at end of year $ 856 $ 868 $ 864 $ 877 Amounts recognized in the consolidated balance sheets consist of: Long-term assets $ 871 $ 885 $ 871 $ 885 Current liabilities (8) (8) (7) (8) Long-term liabilities (7) (9) — — $ 856 $ 868 $ 864 $ 877 Amounts recognized in accumulated other comprehensive loss consist of: Net (gain)/loss $ (2) $ 1 $ — $ — Amounts recognized as a regulatory liability (867) (886) (867) (886) Weighted average assumptions used to determine obligations at end of year: Discount rate 5.43 % 2.95 % 5.43 % 2.95 % Assumed health care cost trend rates: Rate assumed for following year 6.75 % 6.25 % 6.75 % 6.25 % Ultimate rate 5.00 % 5.00 % 5.00 % 5.00 % Year ultimate rate reached 2029 2029 2029 2029
Expense Components for Plans	Net periodic PBOP expense components are: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Service cost $ 34 $ 40 $ 38 $ 34 $ 40 $ 37 Non-service cost (benefit) Interest cost 56 52 63 55 52 63 Expected return on plan assets (97) (106) (119) (97) (106) (119) Amortization of prior service cost (2) (1) (1) (2) (1) (1) Amortization of net gain (45) (35) (29) (45) (36) (29) Regulatory adjustment 55 51 49 55 51 49 Total non-service benefit 1 (33) (39) (37) (34) (40) (37) Total expense $ 1 $ 1 $ 1 $ — $ — $ — 1 Included in "Other income" on Edison International's and SCE's consolidated income statements. For further details, see Note 16.
Schedule of Assumptions Used	Edison International and SCE used the following weighted average assumptions to determine PBOP expense: Years ended December 31, 2022 2021 2020 Discount rate 2.95 % 2.67 % 3.32 % Expected long-term return on plan assets 3.50 % 4.00 % 4.90 % Assumed health care cost trend rates: Current year 6.25 % 6.50 % 6.50 % Ultimate rate 5.00 % 5.00 % 5.00 % Year ultimate rate reached 2029 2029 2029
Schedule of Expected Benefit Payments	The following benefit payments (net of plan participants' contributions) are expected to be paid: Edison (in millions) International SCE 2023 $ 78 $ 78 2024 81 80 2025 82 82 2026 84 84 2027 86 85 2028 – 2032 450 447
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	December 31, 2022 (in millions) Level 1 Level 2 NAV 1 Total U.S. government and agency securities 2 $ 222 $ 304 $ — $ 526 Corporate stocks 3 103 2 — 105 Corporate notes and bonds 4 — 860 — 860 Common/collective funds 5 — — 413 413 Partnerships 6 — — 119 119 Registered investment companies 7 55 — — 55 Interest bearing cash — 56 — 56 Other 8 — 59 — 59 Total $ 380 $ 1,281 $ 532 $ 2,193 Receivables and payables, net (6) Combined net plan assets available for benefits 2,187 SCE's share of net plan assets $ 2,187 December 31, 2021 (in millions) Level 1 Level 2 NAV 1 Total U.S. government and agency securities 2 $ 813 $ 10 $ — $ 823 Corporate stocks 3 145 3 — 148 Corporate notes and bonds 4 — 997 — 997 Common/collective funds 5 — — 544 544 Partnerships 6 — — 107 107 Registered investment companies 7 44 — — 44 Interest bearing cash — 51 — 51 Other 8 — 59 — 59 Total $ 1,002 $ 1,120 $ 651 $ 2,773 Receivables and payables, net (1) Combined net plan assets available for benefits $ 2,772 SCE's share of net plan assets $ 2,772 1 These investments are measured at fair value using the net asset value per share practical expedient and have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the net plan assets available for benefits. 2 Level 1 U.S. government and agency securities are U.S. treasury bonds and notes. Level 2 primarily relates to the Federal Home Loan Mortgage Corporation and the Federal National Mortgage Association. 3 Corporate stock performance for actively managed separate accounts is primarily benchmarked against the Russell Indexes ( 73% ) and the MSCI All Country World Index ( 27% ) for both 2022 and 2021. 4 Corporate notes and bonds are diversified and include approximately $150 million for commercial collateralized mortgage obligations and other asset backed securities at both December 31, 2022 and 2021. 5 At December 31, 2022 and 2021, respectively, 53% and 65% of the common/collective assets are invested in index funds which seek to track performance in the MSCI All Country World Index Investable Market Index. 27% and 25% are invested in a non-index U.S. equity fund which is actively managed. The remaining assets in this category are primarily invested in fixed income fund and emerging market fund. 6 At December 31, 2022 and 2021, respectively, 63% and 54% of the partnerships are invested in private equity and venture capital funds. Investment strategies for these funds include branded consumer products, clean and information technology and healthcare. Of the remaining partnerships category, 31% and 35% are invested in asset backed securities including distressed mortgages, distressed companies and commercial and residential loans and debt and equity of banks, 6% and 11% are invested in a broad range of financial assets in all global markets. 7 At December 31, 2022 and 2021, respectively, registered investment companies were primarily invested in a money market fund ( 75% and 61% ) and exchange rate trade funds which seek to track performance of MSCI Emerging Market Index, Russell 2000 Index and international small cap equities ( 25% and 39% ) 8 Other includes $53 million and $44 million of municipal securities at December 31, 2022 and 2021, respectively .

Investments (Tables)

Investments (Tables)	12 Months Ended
Investments (Tables)	Dec. 31, 2022
Investments [Abstract]
Amortized Cost and Fair Value of the Trust Investments	Amortized Costs Fair Value Longest December 31, December 31, December 31, December 31, (in millions) Maturity Date 2022 2021 2022 2021 Municipal bonds 2061 $ 672 $ 875 $ 754 $ 1,033 Government and agency securities 2072 1,025 1,095 1,091 1,212 Corporate bonds 2070 351 386 377 446 Short-term investments and receivables/payables 1 One-year 110 199 116 207 Total debt securities and other $ 2,158 $ 2,555 2,338 2,898 Equity securities 1,610 1,972 Total $ 3,948 $ 4,870 1 Short-term investments include $41 million and $37 million of repurchase agreements payable by financial institutions which earn interest, were 97% and fully secured by U.S. Treasury securities and mature by January 3, 2023 and January 3, 2022 as of December 31, 2022 and 2021, respectively.
Summary of gains and losses	Years ended December 31, (in millions) 2022 2021 2020 Gross realized gains $ 150 $ 339 $ 255 Gross realized losses (127) (24) (6) Net unrealized (losses)/gains for equity securities (369) 103 176
Summarizes of unrealized gains/(losses)	Years ended December 31, (in millions) 2022 2021 2020 Marketable securities $ (6) $ 3 $ — Equity investments without readily determinable fair values - upward adjustments 8 1 — Total unrealized gains $ 2 $ 4 $ —

Regulatory Assets and Liabili_2

Regulatory Assets and Liabilities (Tables)	12 Months Ended
Regulatory Assets and Liabilities (Tables)	Dec. 31, 2022
Regulatory Assets and Liabilities Disclosure [Abstract]
Regulatory assets	December 31, (in millions) 2022 2021 Current: Regulatory balancing and memorandum accounts $ 2,400 $ 1,591 Power contracts 71 168 Other 26 19 Total current 2,497 1,778 Long-term: Deferred income taxes, net of liabilities 5,178 4,770 Power contracts — 71 Unamortized investments, net of accumulated amortization 113 114 Unamortized loss on reacquired debt 109 121 Regulatory balancing and memorandum accounts 1,589 1,897 Environmental remediation 241 242 Recovery assets 834 325 Other 117 120 Total long-term 8,181 7,660 Total regulatory assets $ 10,678 $ 9,438
Regulatory liabilities	December 31, (in millions) 2022 2021 Current: Regulatory balancing and memorandum accounts $ 584 $ 553 Energy derivatives 338 25 Other 42 25 Total current 964 603 Long-term: Costs of removal 2,589 2,552 Re-measurement of deferred taxes 2,250 2,315 Recoveries in excess of ARO liabilities 1,231 2,155 Regulatory balancing and memorandum accounts 1,116 648 Pension and other postretirement benefits 1,007 1,281 Other 18 30 Total long-term 8,211 8,981 Total regulatory liabilities $ 9,175 $ 9,584
Schedule of Regulatory Balancing Accounts	December 31, (in millions) 2022 2021 Asset (liability) Energy resource recovery account $ 1,580 $ 759 Portfolio allocation balancing account (73) (183) New system generation balancing account (63) 73 Public purpose programs and energy efficiency programs (1,577) (1,066) Base revenue requirement balancing account 1,108 849 GRC wildfire mitigation balancing accounts 1 67 12 Greenhouse gas auction revenue and low carbon fuel standard revenue (289) (298) FERC balancing accounts (123) 55 Wildfire and drought restoration accounts 2 352 299 Wildfire-related memorandum accounts 3 1,168 1,456 COVID-19-related memorandum accounts 67 94 Customer service re-platform memorandum account 64 128 Tax accounting memorandum account and pole loading balancing account 90 171 Excess bond and power charge balancing account (56) — Other (26) (62) Asset $ 2,289 $ 2,287 1 The 2021 GRC decision approved the establishment of the vegetation management balancing account ("VMBA") to track vegetation management expenses up to 115% of amounts authorized, the Wildfire Risk Mitigation balancing account ("WRMBA") to track the costs of SCE's Wildfire Covered Conductor Program up to 110% of amounts authorized and the risk management balancing account to track the authorized costs of wildfire insurance. The amount recorded to these balancing accounts represents the difference between costs tracked in the balancing accounts and authorized revenues for those costs recorded to the base revenue requirement balancing account. If spending is less than authorized, SCE will refund those amounts to customers. If spending is within the specified threshold, if any, for each balancing account, SCE will recover those costs from customers. Amounts above the specified threshold, or above amounts authorized if a higher threshold was not established, for each balancing account may be eligible for deferral to wildfire-related memorandum accounts. 2 The wildfire and drought restoration accounts regulatory assets represent restoration costs that are recorded in a Catastrophic Event Memorandum Account ("CEMA"). 3 The wildfire-related memorandum accounts regulatory assets represent wildfire-related costs that are probable of future recovery from customers, subject to a reasonableness review. The Fire Hazard Prevention Memorandum Account ("FHPMA") was used to track costs related to fire safety and to implement fire prevention corrective action measures in extreme and very high fire threat areas. The Wildfire Expense Memorandum Account ("WEMA") is used to track incremental wildfire insurance costs and uninsured wildfire-related financing, legal and claims costs related to the post-2018 wildfires that SCE believes are probable of recovery. See Note 12 for further details. The Wildfire Mitigation Plan Memorandum Account ("WMPMA") is used to track costs incurred to implement SCE's wildfire mitigation plan that are not currently reflected in SCE's revenue requirements. The Fire Risk Mitigation Memorandum Account ("FRMMA") is used to track costs related to the reduction of fire risk that are incremental to costs approved for recovery in SCE's GRCs that are not tracked in any other wildfire-related memorandum account. The balance also includes vegetation management spending in excess of the 115% threshold for the VMBA described above.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2022
Commitments and Contingencies
Summary of undiscounted expected payments for PPA	(in millions) Total 2023 $ 3,106 2024 2,596 2025 2,409 2026 2,401 2027 2,221 Thereafter 18,000 Total future commitments 1 $ 30,733 1 Certain power purchase agreements are treated as operating leases. For further discussion, see Note 13.
Summary of Certain Future Other Commitments	The following summarizes the estimated minimum future commitments for SCE's other commitments: (in millions) 2023 2024 2025 2026 2027 Thereafter Total Other contractual obligations $ 46 $ 52 $ 50 $ 46 $ 35 $ 203 $ 432
2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Schedule of Contingency Accruals and Changes	(in millions) Balance at December 31, 2021 1 $ 1,734 Increase in accrued estimated losses 1,296 Amounts paid (1,911) Balance at December 31, 2022 2 $ 1,119 1 At December 31, 2021, $131 million in current liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets consists of settlements executed in connection with the 2017/2018 Wildfire/Mudslide Events. At December 31, 2021, the $1,733 million included in deferred credits and other liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets includes Edison International's and SCE's best estimate of expected losses for the 2017/2018 Wildfire/Mudslide Events of $1,603 million and other wildfire-related claims estimates of $130 million. 2 At December 31, 2022, $121 million in current liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets consists of $65 million of settlements executed and $56 million of a short term payables under the SED Agreement in connection with the 2017/2018 Wildfire/Mudslide Events. At December 31, 2022, the $1,687 million included in deferred credits and other liabilities, wildfire-related claims, on Edison International's and SCE's consolidated balance sheets includes Edison International's and SCE's best estimate of expected losses for remaining alleged and potential claims related to the 2017/2018 Wildfire/Mudslide Events of $934 million, $64 million of a long term payables under the SED Agreement and other wildfire-related claims estimates of $689 million. For the years-ended December 31, 2022 and 2021, Edison International’s and SCE’s income statements include charges for the estimated losses, net of expected recoveries from insurance and FERC customers, related to the 2017/2018 Wildfire/Mudslide Events as follows: Years ended December 31, (in millions) 2022 2021 Charge for wildfire-related claims $ 1,296 $ 1,265 Expected revenue from FERC customers (76) (67) Total pre-tax charge 1,220 1,198 Income tax benefit (341) (304) Total after-tax charge $ 879 $ 894
Post-2018 Wildfires
Commitments and Contingencies
Schedule of Contingency Accruals and Changes	The following table presents changes in estimated losses since December 31, 2021: (in millions) Balance at December 31, 2021 $ 123 Increase in accrued estimated losses 572 Amounts paid (13) Balance at December 31, 2022 $ 682 For the years-ended December 31, 2022 and 2021, Edison International's and SCE's income statements include charges for the estimated losses, net of expected recoveries from insurance and customers, related to the Post-2018 Wildfires as follows, respectively: Years ended December 31, (in millions) 2022 2021 Edison International: Charge for wildfire-related claims 1 $ 572 $ 7 Expected insurance recoveries 2 (390) — Expected revenue from CPUC and FERC customers (162) — Total pre-tax charge 20 7 Income tax benefit (6) (2) Total after-tax charge $ 14 $ 5 Years ended December 31, (in millions) 2022 2021 SCE: Charge for wildfire-related claims 1 $ 572 $ 7 Expected insurance recoveries (399) — Expected revenue from CPUC and FERC customers (162) — Total pre-tax charge 11 7 Income tax benefit (3) (2) Total after-tax charge $ 8 $ 5 1 Includes estimated co-insurance payments recorded as operations and maintenance expense. 2 In the third quarter of 2022. Edison Insurance Services, Inc. ("EIS"), a wholly-owned subsidiary of Edison International, paid $9 million insurance, which was included in the insurance recovery of SCE but was excluded in Edison International.

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2022
Leases
Summary of Finance Lease Payments	The following table summarizes SCE's future lease payments for operating leases as of December 31, 2022: PPA Operating Other Operating (in millions) Leases 1 Leases 2 2023 $ 493 $ 49 2024 82 42 2025 73 38 2026 70 35 2027 65 31 Thereafter 633 117 Total lease payments 1,416 312 Amount representing interest 227 68 Lease liabilities $ 1,189 $ 244 1 Excludes expected purchases from most renewable energy contracts, which do not meet the definition of a lease payment since renewable power generation is contingent on external factors. 2 Excludes escalation clauses based on consumer price or other indices and residual value guarantees that are not considered probable at the commencement date of the lease.
Summary of Lease Expense Components	Years ended December 31, (in millions) 2022 2021 2020 PPA leases: Operating lease cost $ 580 $ 305 $ 111 Variable lease cost 1 2,661 2,098 1,918 Short term lease cost — 539 — Total PPA lease cost 3,241 2,942 2,029 Other operating leases cost 52 47 47 Total lease cost $ 3,293 $ 2,989 $ 2,076 1 Includes lease costs from renewable energy contracts where payments are based on contingent external factors such as wind, hydro and solar power generation. Other information related to leases was as follows: Years ended December 31, (in millions, except lease term and discount rate) 2022 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from: PPA operating leases $ 580 $ 305 $ 111 Other operating leases 50 45 44 ROU assets obtained in exchange for lease obligations: PPA operating leases $ 20 $ 1,084 $ 463 Other operating leases 76 71 58 Weighted average remaining lease term (in years): PPA operating leases 9.42 8.16 9.75 Other operating leases 10.38 11.14 12.13 Weighted average discount rate: PPA operating leases 2.95 % 2.43 % 3.12 % Other operating leases 3.78 % 3.34 % 3.63 %
Schedule of Undiscounted Cash Flow Expected from Lease Payments	(in millions) 2023 $ 13 2024 12 2025 11 2026 6 2027 6 Thereafter 120 Total $ 168

Equity (Tables)

Equity (Tables)	12 Months Ended
Equity (Tables)	Dec. 31, 2022
Equity
Schedule of Preferred Stock and Preference Stock	Preference stocks are: Redemption Dividends Shares Price Declared December 31, (in millions, except shares and per share amounts) Outstanding per Share per Share 2022 2021 No par value: 3-month LIBOR + 4.199% Series E (cumulative) 350,000 $ 1,000.00 $ 65.110 $ 350 $ 350 5.10% Series G (cumulative) 88,004 2,500.00 127.500 220 220 5.75% Series H (cumulative) 110,004 2,500.00 143.750 275 275 5.375% Series J (cumulative) 130,004 2,500.00 134.375 325 325 5.45% Series K (cumulative) 120,004 2,500.00 136.250 300 300 5.00% Series L (cumulative) 190,004 2,500.00 125.000 475 475 SCE's preference stock 1,945 1,945 Less issuance costs (44) (44) Edison International's preference stock of utility $ 1,901 $ 1,901

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
Accumulated Other Comprehensive Loss (Tables)	Dec. 31, 2022
Accumulated Other Comprehensive Loss
Components of Accumulated Other Comprehensive Loss	The changes in accumulated other comprehensive loss, net of tax, consist of: Edison International SCE Years ended December 31, (in millions) 2022 2021 2022 2021 Beginning balance $ (54) $ (69) $ (32) $ (41) Pension and PBOP: Other comprehensive income before reclassifications 35 7 17 4 Reclassified from accumulated other comprehensive loss 1 8 8 7 5 Change 43 15 24 9 Ending Balance $ (11) $ (54) $ (8) $ (32) 1 .

Other Income (Tables)

Other Income (Tables)	12 Months Ended
Other Income (Tables)	Dec. 31, 2022
Other Income
Summary of Other Income	Other income net of expenses is as follows: Years ended December 31, (in millions) 2022 2021 2020 SCE other income (expense): Equity allowance for funds used during construction $ 137 $ 118 $ 121 Increase in cash surrender value of life insurance policies and life insurance benefits 42 40 66 Interest income 80 3 20 Net periodic benefit income – non-service components 136 123 102 Civic, political and related activities and donations (42) (39) (42) Other (16) (12) (12) Total SCE other income 337 233 255 Other income (expense) of Edison International Parent and Other: Interest income 9 — — Net periodic benefit costs – non-service components (2) (2) (2) Other 4 6 (2) Total Edison International other income $ 348 $ 237 $ 251

Supplemental Cash Flows Infor_2

Supplemental Cash Flows Information (Tables)	12 Months Ended
Supplemental Cash Flows Information (Tables)	Dec. 31, 2022
Supplemental Cash Flows Information
Summary of Supplemental Cash Flows Information	Supplemental cash flows information is: Edison International SCE Years ended December 31, (in millions) 2022 2021 2020 2022 2021 2020 Cash payments (receipts): Interest, net of amounts capitalized $ 1,001 $ 887 $ 836 $ 864 $ 760 $ 713 Income taxes, net (49) (88) (34) (49) (88) (50) Non-cash financing and investing activities: Dividends declared but not paid: Common stock 282 266 251 350 325 — Preference stock of SCE 8 11 11 8 11 11

Related-Party Transactions (Tab

Related-Party Transactions (Tables)	12 Months Ended
Related-Party Transactions (Tables)	Dec. 31, 2022
Related Party Transactions
Schedule of Related-Party Transactions	December 31, (in millions) 2022 2021 Prepaid insurance 1 $ 106 $ 52 Long-term insurance receivable due from affiliate 334 — 1 Reflected in "Prepaid expenses" on SCE's consolidated balance sheets.

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Organization) (Details)	12 Months Ended
	Dec. 31, 2022 mi²
SCE
Organization
Supply of electricity area covered (in square miles)	50,000

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Cash) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restricted Cash and Cash Equivalents Items [Line Items]
Money market funds	$ 784	$ 329
Cash and cash equivalents	914	390
Short-term restricted cash	$ 3	$ 4
Restricted Cash, Current, Statement of Financial Position [Extensible Enumeration]	Other Assets, Current	Other Assets, Current
Total cash, cash equivalents, and restricted cash	$ 917	$ 394	$ 89	$ 70
SCE
Restricted Cash and Cash Equivalents Items [Line Items]
Money market funds	647	230
Cash and cash equivalents	766	279
Short-term restricted cash	$ 0	$ 1
Restricted Cash, Current, Statement of Financial Position [Extensible Enumeration]	Other Assets, Current	Other Assets, Current
Total cash, cash equivalents, and restricted cash	$ 766	$ 280	$ 56	$ 24

Summary of Significant Accoun_6

Summary of Significant Accounting Policies (Allowance) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for long-term uncollectible accounts	$ 7	$ 7	$ 116
SCE
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		309	188	$ 49
Included in operation and maintenance expenses in earning activities		82	44	45
Included in operation and maintenance expenses in cost-recovery activities		58	74	15
Deferred to regulatory memorandum accounts		(18)	17	105
Write-offs, net of recoveries		(77)	(14)	(26)
Ending balance	354	354	309	188
Allowance for long-term uncollectible accounts	7	7	116
SCE \| CAPP
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Credit loss expense (reversal)	(83)
SCE \| Customers
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		293	175	35
Included in operation and maintenance expenses in earning activities		71	33	36
Included in operation and maintenance expenses in cost-recovery activities		58	74	15
Deferred to regulatory memorandum accounts		(18)	17	105
Write-offs, net of recoveries		(70)	(6)	(16)
Ending balance	334	334	293	175
SCE \| All others
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		16	13	14
Included in operation and maintenance expenses in earning activities		11	11	9
Write-offs, net of recoveries		(7)	(8)	(10)
Ending balance	$ 20	$ 20	$ 16	$ 13

Summary of Significant Accoun_7

Summary of Significant Accounting Policies (Emission Allowances) (Details) - SCE - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Significant Accounting Policies [Line Items]
Regulatory liabilities	$ 9,175	$ 9,584
LCFS net sales proceeds
Significant Accounting Policies [Line Items]
Regulatory liabilities	218	193
Other Current Assets
Significant Accounting Policies [Line Items]
GHG allowances	87	47
GHG emission obligations	$ 55
Other Current Liabilities
Significant Accounting Policies [Line Items]
GHG emission obligations		$ 34

Summary of Significant Accoun_8

Summary of Significant Accounting Policies (PPE) (Details) - SCE - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Sep. 30, 2022	Aug. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Depreciation			$ 2,500	$ 2,000	$ 1,800
Depreciation expense based on cost (as a percent)			4.20%	3.70%	3.60%
AFUDC equity capitalized during construction			$ 137	$ 118	$ 121
Impairment and other expense	$ 47	$ 79
Asset impairment, net of tax	$ 34	$ 47
Potential impairment			177	186
Other income.
Property, Plant and Equipment [Line Items]
AFUDC equity capitalized during construction			137	118	121
Interest expense
Property, Plant and Equipment [Line Items]
AFUDC debt capitalized during construction			$ 53	$ 50	$ 53
Generation plant \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			10 years
Generation plant \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			55 years
Generation plant \| Weighted Average
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			39 years
Distribution plant \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			20 years
Distribution plant \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			67 years
Distribution plant \| Weighted Average
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			50 years
Transmission plant \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			30 years
Transmission plant \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			65 years
Transmission plant \| Weighted Average
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			53 years
General plant and other \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			5 years
General plant and other \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			60 years
General plant and other \| Weighted Average
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			20 years

Summary of Significant Accoun_9

Summary of Significant Accounting Policies (Prepaid Insurance) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Redeemable Noncontrolling Interest [Line Items]
Wildfire Insurance Fund contributions, noncurrent		$ 2,155	$ 2,359
Wildfire Insurance Fund contributions, current		204	204
Wildfire Insurance Fund contributions		$ 95	$ 95	$ 95
Historical term used in estimate		15 years
Measurement Input
Redeemable Noncontrolling Interest [Line Items]
Historical term used in estimate	9 years	8 years	7 years
Wildfire Insurance Fund
Redeemable Noncontrolling Interest [Line Items]
Wildfire Insurance Fund contributions, noncurrent		$ 2,200	$ 2,400
Wildfire Insurance Fund contributions, current		204	204
Wildfire Insurance Fund contributions					$ 2,400
Wildfire Insurance Fund liability, noncurrent		$ 536	$ 620
Insurance fund contribution amortization period		15 years	15 years
SCE
Redeemable Noncontrolling Interest [Line Items]
Wildfire Insurance Fund contributions, noncurrent		$ 2,155	$ 2,359
Wildfire Insurance Fund contributions, current		204	204
Wildfire Insurance Fund contributions		$ 95	$ 95	$ 95

Summary of Significant Accou_10

Summary of Significant Accounting Policies (Nuclear Decommissioning) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Asset Retirement Obligation, Roll Forward
Beginning balance	$ 2,772
Ending balance	2,754	$ 2,772
SCE
Asset Retirement Obligation, Roll Forward
Beginning balance	2,772	2,930
Accretion	143	157
Revisions	28	(77)
Liabilities settled	(189)	(238)
Ending balance	2,754	$ 2,772
SCE \| Palo Verde and San Onofre Units
Asset Retirement Obligation, Roll Forward
Ending balance	2,300
Estimated cost to decommission nuclear facilities	$ 6,300
Decommissioning cost escalated rates, low end (percent)	2.30%
Decommissioning cost escalated rates, high end (percent)	7.50%
Estimated annual net of tax earnings, low end (percent)	1.60%
Estimated annual net of tax earnings, high end (percent)	4.90%

Summary of Significant Accou_11

Summary of Significant Accounting Policies (Deferred Financing) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Regulatory Assets [Line Items]
Regulatory assets	$ 8,181	$ 7,660
Unamortized debt issuance expense	178	153
Amortization of deferred financing costs charged to interest expense	37	34	$ 32
SCE
Regulatory Assets [Line Items]
Regulatory assets	8,181	7,660
Unamortized debt issuance expense	165	143
Amortization of deferred financing costs charged to interest expense	31	29	$ 27
SCE \| Unamortized loss on reacquired debt
Regulatory Assets [Line Items]
Regulatory assets	$ 109	$ 121

Summary of Significant Accou_12

Summary of Significant Accounting Policies (Revenue) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SCE
Public Utilities, General Disclosures [Line Items]
Franchise fees billed to customers	$ 172	$ 147	$ 131

Summary of Significant Accou_13

Summary of Significant Accounting Policies (ESPP) (Details) - USD ($)	1 Months Ended
	Jul. 31, 2021	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)		71,000,000
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)	3,000,000
Maximum payroll deduction	$ 25,000
Purchase price based on market (as a percent)	97%
ESPP \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payroll deductions (as a percent)	1%
ESPP \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payroll deductions (as a percent)	10%

Summary of Significant Accou_14

Summary of Significant Accounting Policies (Dividends) (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Feb. 23, 2023	Dec. 31, 2022	Dec. 31, 2019	Dec. 31, 2018	Nov. 30, 2022
Significant Accounting Policies [Line Items]
Dividend increase (decrease) (as a percent)		5%
Dividends (in dollars per share)	$ 0.7375	$ 2.95			$ 2.80
Minimum
Significant Accounting Policies [Line Items]
Dividend target payout ratio		45%
Maximum
Significant Accounting Policies [Line Items]
Dividend target payout ratio		55%
SCE
Significant Accounting Policies [Line Items]
Weighted-average equity component authorization (as a percent)		52%	48%	45.20%
Wildfire related charge incurred after tax				$ 1,800
Weighted-average common equity component authorization period			37 months	37 months
Weighted-average common equity component of total capitalization percent (below)				48.70%
Spot rate equity ratio				47.70%
Waiver threshold percent				47.70%
Dividends	$ 350

Summary of Significant Accou_15

Summary of Significant Accounting Policies (EPS) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Basic earnings per share:
Net income attributable to common shareholders	$ 612	$ 759	$ 739
Net income available to common shareholders	$ 612	$ 759	$ 739
Weighted average common shares outstanding (in shares)	381,000,000	380,000,000	373,000,000
Basic earnings per share (in dollars per share)	$ 1.61	$ 2	$ 1.98
Diluted earnings per share:
Net income attributable to common shareholders	$ 612	$ 759	$ 739
Net income available to common shareholders	612	759	739
Income impact of assumed conversions	1	1
Net income available to common shareholders and assumed conversions	$ 613	$ 760	$ 739
Weighted average common shares outstanding (in shares)	381,000,000	380,000,000	373,000,000
Incremental shares from assumed conversions (in shares)	2,000,000	0	1,000,000
Adjusted weighted average shares - diluted (in shares)	383,000,000	380,000,000	374,000,000
Diluted earnings per share (in dollars per share)	$ 1.60	$ 2	$ 1.98
Stock Compensation Plan
Diluted earnings per share:
Antidilutive awards excluded from earnings per share (in shares)	5,839,549	10,239,501	9,066,753

Summary of Significant Accou_16

Summary of Significant Accounting Policies (Business Acquisition) (Details) - Alfa Energy Ltd £ in Millions, $ in Millions	1 Months Ended
	Oct. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Oct. 31, 2022 GBP (£)
Business Acquisition [Line Items]
Percentage of ownership acquired	100%		100%
Initial cash payment	$ 22
Goodwill		$ 16
Maximum additional consideration	$ 17		£ 14
Contingent consideration payment term	3 years

Property, Plant and Equipment_2

Property, Plant and Equipment (Schedule) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ (12,260)	$ (11,407)
Total utility property, plant and equipment	53,274	50,497
SCE
Property, Plant and Equipment [Line Items]
Distribution	32,754	30,821
Transmission	18,106	17,016
Generation	3,880	3,769
General plant and other	6,121	6,108
Accumulated depreciation	(12,260)	(11,407)
Total utility property, plant and equipment, Gross	48,601	46,307
Construction work in progress	4,551	4,067
Nuclear fuel, at amortized cost	122	123
Total utility property, plant and equipment	$ 53,274	$ 50,497

Property, Plant and Equipment_3

Property, Plant and Equipment (Textual) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Capitalized software costs	$ 2,000
Capitalized software, accumulated amortization	700	$ 600
Capitalized software, amortization expense	344	$ 311	$ 218
Capitalized software, estimated amortization year 1	342
Capitalized software, estimated amortization year 2	309
Capitalized software, estimated amortization year 3	262
Capitalized software, estimated amortization year 4	190
Capitalized software, estimated amortization year 5	$ 110
Capitalized software costs \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Capitalized software costs \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives	7 years

Property, Plant and Equipment_4

Property, Plant and Equipment (Jointly Owned Utility Projects) (Details) - SCE - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Jointly Owned Utility Plant Interests [Line Items]
Nuclear Fuel (at amortized cost)	$ 122	$ 123
Eldorado
Jointly Owned Utility Plant Interests [Line Items]
Plant in Service	351
Construction Work in Progress	107
Accumulated Depreciation	(56)
Nuclear Fuel (at amortized cost)	0
Net Book Value	$ 402
Ownership Interest	77%
Pacific Intertie
Jointly Owned Utility Plant Interests [Line Items]
Plant in Service	$ 354
Construction Work in Progress	2
Accumulated Depreciation	(82)
Nuclear Fuel (at amortized cost)	0
Net Book Value	$ 274
Ownership Interest	50%
Palo Verde (nuclear)
Jointly Owned Utility Plant Interests [Line Items]
Plant in Service	$ 2,180
Construction Work in Progress	56
Accumulated Depreciation	(1,653)
Nuclear Fuel (at amortized cost)	122
Net Book Value	$ 705
Ownership Interest	16%
Total
Jointly Owned Utility Plant Interests [Line Items]
Plant in Service	$ 2,885
Construction Work in Progress	165
Accumulated Depreciation	(1,791)
Nuclear Fuel (at amortized cost)	122
Net Book Value	$ 1,381

Variable Interest Entities (Rec

Variable Interest Entities (Recovery Funding) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Feb. 28, 2022	Dec. 31, 2021	Feb. 28, 2021
Variable Interest Entity [Line Items]
Other current assets	$ 397		$ 249
Regulatory assets: non-current	8,181		7,660
Regulatory liabilities: current	964		603
Current portion of long-term debt	2,614		1,077
Other current liabilities	1,601		1,667
Long-term debt	27,025		24,170
SCE Recovery Funding LLC
Variable Interest Entity [Line Items]
Other current assets	45		19
Regulatory assets: non-current	834		325
Regulatory liabilities: current	33		14
Current portion of long-term debt	29		14
Other current liabilities	4		1
Long-term debt	809		314
SCE
Variable Interest Entity [Line Items]
Other current assets	384		222
Regulatory assets: non-current	8,181		7,660
Regulatory liabilities: current	964		603
Current portion of long-term debt	2,214		377
Other current liabilities	1,578		1,631
Long-term debt	24,044		21,733
SCE \| SCE Recovery Funding LLC
Variable Interest Entity [Line Items]
Regulatory assets: non-current	834		325
Long-term debt	$ 809		$ 314
SCE \| SCE Recovery Funding LLC \| Series 2022-A senior secured recovery bonds
Variable Interest Entity [Line Items]
Debt		$ 533
SCE \| SCE Recovery Funding LLC \| Series 2021-A senior secured recovery bonds
Variable Interest Entity [Line Items]
Debt				$ 338

Variable Interest Entities (Tru

Variable Interest Entities (Trusts) (Details) - SCE - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Trust Securities [Member]
Variable Interest Entity [Line Items]
Liquidation value (in dollars per share)			$ 2,500
5.10% Series G Preferred Stock
Variable Interest Entity [Line Items]
Security dividend rate, (as a percent)	5.10%
5.75% Series H Preferred Stock
Variable Interest Entity [Line Items]
Security dividend rate, (as a percent)	5.75%
5.375% Series J Preferred Stock
Variable Interest Entity [Line Items]
Security dividend rate, (as a percent)	5.375%
5.45% Series K Preferred Stock
Variable Interest Entity [Line Items]
Security dividend rate, (as a percent)	5.45%
5.00% Series L Preferred Stock
Variable Interest Entity [Line Items]
Security dividend rate, (as a percent)	5%
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Liquidation value (in dollars per share)			$ 25
Common stock	$ 10,000	$ 10,000	$ 10,000
Power Purchase Agreement
Variable Interest Entity [Line Items]
Amounts paid to VIEs	608,000,000	673,000,000
Trust II
Variable Interest Entity [Line Items]
Liquidation preference							$ 400,000,000
Trust II \| Trust Securities [Member]
Variable Interest Entity [Line Items]
Liquidation preference	220,000,000	220,000,000
Trust II \| 5.10% Series G Preferred Stock
Variable Interest Entity [Line Items]
Security dividend rate, (as a percent)							5.10%
Liquidation preference	220,000,000	220,000,000					$ 400,000,000
Trust III
Variable Interest Entity [Line Items]
Liquidation preference						$ 275,000,000
Trust III \| Trust Securities [Member]
Variable Interest Entity [Line Items]
Liquidation preference	275,000,000	275,000,000
Trust III \| 5.75% Series H Preferred Stock
Variable Interest Entity [Line Items]
Security dividend rate, (as a percent)						5.75%
Liquidation preference	275,000,000	275,000,000				$ 275,000,000
Trust IV
Variable Interest Entity [Line Items]
Liquidation preference					$ 325,000,000
Trust IV \| Trust Securities [Member]
Variable Interest Entity [Line Items]
Liquidation preference	325,000,000	325,000,000
Trust IV \| 5.375% Series J Preferred Stock
Variable Interest Entity [Line Items]
Security dividend rate, (as a percent)					5.375%
Liquidation preference	325,000,000	325,000,000			$ 325,000,000
Trust V
Variable Interest Entity [Line Items]
Liquidation preference				$ 300,000,000
Trust V \| Trust Securities [Member]
Variable Interest Entity [Line Items]
Liquidation preference	300,000,000	300,000,000
Trust V \| 5.45% Series K Preferred Stock
Variable Interest Entity [Line Items]
Security dividend rate, (as a percent)				5.45%
Liquidation preference	300,000,000	300,000,000		$ 300,000,000
Trust VI
Variable Interest Entity [Line Items]
Liquidation preference			$ 475,000,000
Trust VI \| Trust Securities [Member]
Variable Interest Entity [Line Items]
Liquidation preference	475,000,000	475,000,000
Trust VI \| 5.00% Series L Preferred Stock
Variable Interest Entity [Line Items]
Security dividend rate, (as a percent)			5%
Liquidation preference	$ 475,000,000	$ 475,000,000	$ 475,000,000

Variable Interest Entities (Inc

Variable Interest Entities (Income Statement) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Trust II
Variable Interest Entity [Line Items]
Dividend income	$ 11	$ 20	$ 20
Dividend distributions	11	20	20
Trust III
Variable Interest Entity [Line Items]
Dividend income	16	16	16
Dividend distributions	16	16	16
Trust IV
Variable Interest Entity [Line Items]
Dividend income	17	17	17
Dividend distributions	17	17	17
Trust V
Variable Interest Entity [Line Items]
Dividend income	16	16	16
Dividend distributions	16	16	16
Trust VI
Variable Interest Entity [Line Items]
Dividend income	24	24	24
Dividend distributions	$ 24	$ 24	$ 24

Fair Value Measurements (Hierar

Fair Value Measurements (Hierarchy) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Assets at fair value
Nuclear decommissioning trusts	$ 3,948	$ 4,870
SCE
Assets at fair value
Nuclear decommissioning trusts	$ 3,948	$ 4,870
Liabilities at fair value
Percentage of equity investments located in the United States (as a percent)	74%	75%
Collateralized mortgage obligations and other asset backed securities	$ 49	$ 30
Receivable (payables), net, related to investments	(85)	(19)
SCE \| Fair Value, Measurements, Recurring
Assets at fair value
Netting and Collateral	(218)	(31)
Derivative contracts, net	241	44
Money market funds and other	669	253
Nuclear decommissioning trusts	4,033	4,889
Total assets	4,943	5,186
Liabilities at fair value
Netting and Collateral	(119)	(47)
Derivative contracts, net	1
Total liabilities	1
Net assets	4,942	5,186
Netting and Collateral, Total	(99)	16
SCE \| Fair Value, Measurements, Recurring \| Level 1
Assets at fair value
Derivative contracts	0
Money market funds and other	647	230
Nuclear decommissioning trusts	2,688	3,157
Total assets	3,335	3,387
Liabilities at fair value
Derivative contracts	0
Total liabilities	0
Net assets	3,335	3,387
SCE \| Fair Value, Measurements, Recurring \| Level 2
Assets at fair value
Derivative contracts	392	26
Money market funds and other	22	23
Nuclear decommissioning trusts	1,345	1,732
Total assets	1,759	1,781
Liabilities at fair value
Derivative contracts	116	42
Total liabilities	116	42
Net assets	1,643	1,739
SCE \| Fair Value, Measurements, Recurring \| Level 3
Assets at fair value
Derivative contracts	67	49
Money market funds and other	0
Nuclear decommissioning trusts	0
Total assets	67	49
Liabilities at fair value
Derivative contracts	4	5
Total liabilities	4	5
Net assets	63	44
SCE \| Fair Value, Measurements, Recurring \| Equity securities
Assets at fair value
Nuclear decommissioning trusts	1,610	1,972
SCE \| Fair Value, Measurements, Recurring \| Equity securities \| Level 1
Assets at fair value
Nuclear decommissioning trusts	1,610	1,972
SCE \| Fair Value, Measurements, Recurring \| Equity securities \| Level 2
Assets at fair value
Nuclear decommissioning trusts	0
SCE \| Fair Value, Measurements, Recurring \| Equity securities \| Level 3
Assets at fair value
Nuclear decommissioning trusts	0
SCE \| Fair Value, Measurements, Recurring \| Fixed Income
Assets at fair value
Nuclear decommissioning trusts	2,222	2,690
SCE \| Fair Value, Measurements, Recurring \| Fixed Income \| Level 1
Assets at fair value
Nuclear decommissioning trusts	941	1,083
SCE \| Fair Value, Measurements, Recurring \| Fixed Income \| Level 2
Assets at fair value
Nuclear decommissioning trusts	1,281	1,607
SCE \| Fair Value, Measurements, Recurring \| Fixed Income \| Level 3
Assets at fair value
Nuclear decommissioning trusts	0
SCE \| Fair Value, Measurements, Recurring \| Short-term investments, primarily cash equivalents
Assets at fair value
Nuclear decommissioning trusts	201	227
SCE \| Fair Value, Measurements, Recurring \| Short-term investments, primarily cash equivalents \| Level 1
Assets at fair value
Nuclear decommissioning trusts	137	102
SCE \| Fair Value, Measurements, Recurring \| Short-term investments, primarily cash equivalents \| Level 2
Assets at fair value
Nuclear decommissioning trusts	64	$ 125
SCE \| Fair Value, Measurements, Recurring \| Short-term investments, primarily cash equivalents \| Level 3
Assets at fair value
Nuclear decommissioning trusts	$ 0

Fair Value Measurements (Level

Fair Value Measurements (Level 3) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Fair Value Disclosures Level 3 [Roll Forward]
Transfers into or out of Level 3	$ 0	$ 0
SCE \| Level 3
Fair Value Disclosures Level 3 [Roll Forward]
Fair value of net assets at beginning of period	44	108
Sales	(8)	(2)
Settlements	(54)	(63)
Total realized/unrealized gains	81	1
Fair value of net assets at end of period	$ 63	$ 44

Fair Value Measurements (Leve_2

Fair Value Measurements (Level 3 Inputs) (Details) - SCE - Level 3 - Congestion revenue rights (GWh) - Auction prices $ in Millions	Dec. 31, 2022 USD ($) $ / MWh	Dec. 31, 2021 USD ($) $ / MWh
Quantitative Information About Level 3 Measurements [Line Items]
Fair value, Level 3 assets \| $	$ 67	$ 49
Fair value, Level 3 liabilities \| $	$ 4	$ 5
Minimum
Quantitative Information About Level 3 Measurements [Line Items]
Derivative Asset (Liability) Net, Measurement Input	(7.91)	(18.87)
Maximum
Quantitative Information About Level 3 Measurements [Line Items]
Derivative Asset (Liability) Net, Measurement Input	3,856.67	43.03
Weighted Average
Quantitative Information About Level 3 Measurements [Line Items]
Derivative Asset (Liability) Net, Measurement Input	1.64	1.46

Fair Value Measurements (Parent

Fair Value Measurements (Parent) (Details) - Edison International Parent and Other - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Level 1
Fair Value
Equity investments fair value	$ 5	$ 12
Money market funds fair value	137	99
Level 2
Fair Value
Short-term investments fair value	$ 2	$ 6

Fair Value Measurements (Debt)

Fair Value Measurements (Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value of Long-Term Debt Recorded at Carrying Value
Carrying Value	$ 29,639	$ 25,247
Fair Value	26,824	27,718
SCE
Fair Value of Long-Term Debt Recorded at Carrying Value
Carrying Value	26,258	22,110
Fair Value	$ 23,469	$ 24,375

Debt and Credit Agreements (Lon

Debt and Credit Agreements (Long-term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Current portion of long-term debt	$ (2,614)	$ (1,077)
Long-term debt	27,025	24,170
Edison International Parent and Other
Debt Instrument [Line Items]
Current portion of long-term debt	(400)	(700)
Unamortized debt discount/premium and issuance costs, net	(19)	(13)
Long-term debt	2,981	2,437
Edison International Parent and Other \| Debentures and notes
Debt Instrument [Line Items]
Long-term debt	$ 3,400	3,150
Edison International Parent and Other \| Debentures and notes \| Minimum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	2.95%
Edison International Parent and Other \| Debentures and notes \| Maximum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	6.95%
SCE
Debt Instrument [Line Items]
Current portion of long-term debt	$ (2,214)	(377)
Unamortized debt discount/premium and issuance costs, net	(149)	(113)
Long-term debt	24,044	21,733
SCE \| Debentures and notes
Debt Instrument [Line Items]
Long-term debt	$ 306	306
SCE \| Debentures and notes \| Minimum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	5.06%
SCE \| Debentures and notes \| Maximum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	6.65%
SCE \| First and refunding mortgage bonds
Debt Instrument [Line Items]
Long-term debt	$ 23,900	20,314
SCE \| First and refunding mortgage bonds \| Minimum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	0.70%
SCE \| First and refunding mortgage bonds \| Maximum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	6.05%
SCE \| Pollution-control bonds
Debt Instrument [Line Items]
Long-term debt	$ 752	752
SCE \| Pollution-control bonds \| Minimum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	1.45%
SCE \| Pollution-control bonds \| Maximum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	2.63%
SCE \| Series 2021-A senior secured recovery bonds
Debt Instrument [Line Items]
Long-term debt	$ 849	333
SCE \| Series 2021-A senior secured recovery bonds \| Minimum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	0.86%
SCE \| Series 2021-A senior secured recovery bonds \| Maximum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	3.24%
SCE \| Other long-term debt
Debt Instrument [Line Items]
Long-term debt	$ 600	$ 518

Debt and Credit Agreements (Mat

Debt and Credit Agreements (Maturities) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
2023	$ 2,614
2024	2,680
2025	2,030
2026	381
2027	1,981
SCE
Debt Instrument [Line Items]
2023	2,214
2024	2,180
2025	1,230
2026	381
2027	$ 1,381

Debt and Credit Agreements (Cre

Debt and Credit Agreements (Credit Facilities) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Line of Credit Facility [Line Items]
Commitment	$ 4,850
Outstanding borrowings	285
Outstanding letters of credit	431
Amount available	$ 4,134
Edison International Parent and Other
Line of Credit Facility [Line Items]
Covenant debt to total capitalization ratio	0.70
Actual debt to capitalization ratio	0.64
Edison International Parent and Other \| Multi-year credit facilities
Line of Credit Facility [Line Items]
Commitment	$ 1,500
Outstanding borrowings	90
Amount available	1,410
Contingent maximum available borrowing	$ 2,000
Edison International Parent and Other \| Multi-year credit facilities \| SOFR
Line of Credit Facility [Line Items]
Basis points	1.28%
Edison International Parent and Other \| Multi-year credit facilities \| Commercial paper
Line of Credit Facility [Line Items]
Outstanding borrowings	$ 90	$ 0
Weighted average interest rate (as a percent)	4.92%
SCE
Line of Credit Facility [Line Items]
Covenant debt to total capitalization ratio	0.65
Actual debt to capitalization ratio	0.56
SCE \| Multi-year credit facilities
Line of Credit Facility [Line Items]
Commitment	$ 3,350
Outstanding borrowings	195
Outstanding letters of credit	431
Amount available	2,724
Contingent maximum available borrowing	$ 4,000
SCE \| Multi-year credit facilities \| SOFR
Line of Credit Facility [Line Items]
Basis points	1.08%
SCE \| Multi-year credit facilities \| Commercial paper
Line of Credit Facility [Line Items]
Outstanding borrowings	$ 195	$ 601
Weighted average interest rate (as a percent)	5.20%	0.45%
SCE \| Other long-term debt \| SOFR
Line of Credit Facility [Line Items]
Basis points	0.90%

Debt and Credit Agreements (Rec

Debt and Credit Agreements (Recovery and Term) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Outstanding borrowings	$ 285
SCE \| Series 2021-A senior secured recovery bonds \| Minimum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	0.86%
SCE \| Series 2021-A senior secured recovery bonds \| Maximum
Debt Instrument [Line Items]
Interest rate on debt (as a percent)	3.24%
SCE \| 0.55% term loan due 2023
Debt Instrument [Line Items]
Outstanding borrowings	$ 730
SCE \| 0.55% term loan due 2023 \| SOFR
Debt Instrument [Line Items]
Basis points	0.55%
Edison International Parent and Other \| 0.70% term loan due April 2023
Debt Instrument [Line Items]
Debt, face amount	$ 600
Edison International Parent and Other \| 0.70% term loan due April 2023 \| SOFR
Debt Instrument [Line Items]
Basis points	0.70%
Edison International Parent and Other \| 0.95% term loan due in November 2023
Debt Instrument [Line Items]
Debt, face amount	$ 400
Edison International Parent and Other \| 0.95% term loan due in November 2023 \| SOFR
Debt Instrument [Line Items]
Basis points	0.95%

Derivative Instruments (Derivat

Derivative Instruments (Derivative) (Details) - SCE - Derivatives with contingent features - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivatives
Aggregate fair value of all derivative liabilities with credit-risk-related contingent features	$ 1	$ 1
Posted collateral	24	$ 0
Potential amount of collateral to be posted if contingencies triggered	$ 58

Derivative Instruments (Balance

Derivative Instruments (Balance Sheet) (Details) - SCE - Commodity derivative contracts - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivative Assets
Gross amounts recognized	$ 459	$ 76
Gross amounts offset in the consolidated balance sheets	(119)	(32)
Cash collateral received	(99)	0
Net amounts presented in the consolidated balance sheets	241	44
Cash collateral received for asset	99
Derivative Liabilities
Gross amounts recognized	120	48
Gross amounts offset in the consolidated balance sheets	(119)	(32)
Cash collateral posted	0	(16)
Net amounts presented in the consolidated balance sheets	1	0
Cash collateral posted for liability		65
Net Asset
Gross amounts recognized	339	28
Gross amounts offset in the consolidated balance sheets	0	0
Netting and Collateral, Total	(99)	16
Net amounts presented in the consolidated balance sheets	240	44
Other Current Assets
Derivative Assets
Gross amounts recognized	459	70
Gross amounts offset in the consolidated balance sheets	(119)	(30)
Cash collateral received	(99)	0
Net amounts presented in the consolidated balance sheets	241	40
Derivative Liabilities
Cash collateral posted for liability		49
Other long-term assets
Derivative Assets
Gross amounts recognized	0	6
Gross amounts offset in the consolidated balance sheets	0	(2)
Cash collateral received		0
Net amounts presented in the consolidated balance sheets	0	4
Other Current Liabilities
Derivative Liabilities
Gross amounts recognized	120	46
Gross amounts offset in the consolidated balance sheets	(119)	(30)
Cash collateral posted		(16)
Net amounts presented in the consolidated balance sheets	1	0
Other long-term liabilities
Derivative Liabilities
Gross amounts recognized	0	2
Gross amounts offset in the consolidated balance sheets	0	(2)
Cash collateral posted		0
Net amounts presented in the consolidated balance sheets	$ 0	$ 0

Derivative Instruments (Hedging

Derivative Instruments (Hedging Activities) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Realized gains (losses)	$ 178	$ 200	$ 87
Unrealized (losses) gains	$ 310	$ (75)	$ 17

Derivative Instruments (Notiona

Derivative Instruments (Notional Values) (Details) - SCE	12 Months Ended
Derivative Instruments (Notional Values) (Details) - SCE	Dec. 31, 2022 Bcfe GWh	Dec. 31, 2021 GWh Bcfe
Electricity options, swaps and forwards (GWh)
Derivatives
Notional volumes of derivative instruments	1,022	1,869
Natural gas options, swaps and forwards (Bcf)
Derivatives
Notional volumes of derivative instruments \| Bcfe	42	58
Congestion revenue rights (GWh)
Derivatives
Notional volumes of derivative instruments	44,028	33,216

Revenue (Summary) (Details)

Revenue (Summary) (Details) - USD ($) $ in Millions	12 Months Ended
Revenue (Summary) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue
Total operating revenue	$ 17,220	$ 14,905	$ 13,578
SCE
Revenue
Revenue from contracts with customers	16,760	14,347	12,459
Alternative revenue programs and other operating revenue	412	527	1,087
Total operating revenue	17,172	14,874	13,546
Receivables from contracts with customers	2,300	2,300
Accrued unbilled revenues	638	794
SCE \| Earning Activities
Revenue
Revenue from contracts with customers	8,327	7,523	6,920
Alternative revenue programs and other operating revenue	681	349	548
Total operating revenue	9,008	7,872	7,468
SCE \| Cost- Recovery Activities
Revenue
Revenue from contracts with customers	8,433	6,824	5,539
Alternative revenue programs and other operating revenue	(269)	178	539
Total operating revenue	$ 8,164	$ 7,002	$ 6,078

Revenue (Deferred) (Details)

Revenue (Deferred) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Revenue (Deferred) (Details) - USD ($) $ in Millions	Jul. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Revenue
Proceeds from Morongo Transmission LLC			$ 400
SCE
Revenue
Proceeds from Morongo Transmission LLC			400
SCE \| West of Devers
Revenue
Proceeds from Morongo Transmission LLC	$ 400
Annual revenue to be recognized	$ 13
Deferred revenue balance		$ 381
Deferred revenue current		13
Deferred revenue non-current		368
Revenue recognized		$ 13	$ 6

Income Taxes (Expense (Benefit)

Income Taxes (Expense (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current:
Federal	$ 2	$ 0	$ 13
State	13	(179)	(22)
Total current	15	(179)	(9)
Deferred:
Federal	(103)	83	(230)
State	(74)	(40)	(66)
Total deferred	(177)	43	(296)
Total income tax expense (benefit)	(162)	(136)	(305)
SCE
Current:
Federal	0	0	12
State	2	(45)	(26)
Total current	2	(45)	(14)
Deferred:
Federal	(44)	83	(207)
State	(67)	(21)	(56)
Total deferred	(111)	62	(263)
Total income tax expense (benefit)	$ (109)	$ 17	$ (277)

Income Taxes (Deferred Tax Liab

Income Taxes (Deferred Tax Liability) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Property	$ 859	$ 856
Wildfire-related	458	558
Nuclear decommissioning trust assets in excess of nuclear ARO liability	321	517
Loss and credit carryforwards	3,479	3,078
Regulatory balances	641	652
Pension and postretirement benefits other than pensions, net	130	153
Leases	406	543
Other	162	165
Sub-total	6,456	6,522
Less: valuation allowance	39	44
Total	6,417	6,478
Deferred tax liabilities:
Property	10,091	9,645
Regulatory balances	1,462	1,242
Nuclear decommissioning trust assets	321	517
Leases	406	543
Other	225	207
Total	12,505	12,154
Accumulated deferred income tax liability, net	6,088	5,676
Operating loss carryforwards valuation allowance	310	277
Operating loss carryforward
Deferred tax assets:
Less: valuation allowance	35	33
Capital loss from sale of SoCore Energy
Deferred tax assets:
Less: valuation allowance	4	4
Charitable contribution carryover
Deferred tax assets:
Less: valuation allowance		7
SCE
Deferred tax assets:
Property	840	835
Wildfire-related	457	558
Nuclear decommissioning trust assets in excess of nuclear ARO liability	321	517
Loss and credit carryforwards	2,157	1,697
Regulatory balances	641	652
Pension and postretirement benefits other than pensions, net	26	30
Leases	406	543
Other	135	179
Sub-total	4,983	5,011
Less: valuation allowance	0	6
Total	4,983	5,005
Deferred tax liabilities:
Property	10,078	9,633
Regulatory balances	1,462	1,242
Nuclear decommissioning trust assets	321	517
Leases	406	543
Other	200	186
Total	12,467	12,121
Accumulated deferred income tax liability, net	7,484	7,116
Operating loss carryforwards valuation allowance	$ 254	221
SCE \| Charitable contribution carryover
Deferred tax assets:
Less: valuation allowance		$ 6

Income Taxes (NOL and Carryforw

Income Taxes (NOL and Carryforwards) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Carryforwards
Loss carryforwards		$ 3,235
Credit carryforwards		554
Deferred tax expense		(177)	$ 43	$ (296)
Capistrano Wind
Carryforwards
Deferred tax expense		121	223
Increase (decrease) to previously recorded tax expense	$ (125)
Expire in 2022
Carryforwards
Loss carryforwards		10
Credit carryforwards		0
Expire between 2024 to 2027
Carryforwards
Loss carryforwards		26
Credit carryforwards		0
Expire between 2029 to 2043
Carryforwards
Loss carryforwards		1,670
Credit carryforwards		544
No expiration date
Carryforwards
Loss carryforwards		1,529
Credit carryforwards		10
SCE
Carryforwards
Loss carryforwards		2,351
Credit carryforwards		60
Deferred tax expense		(111)	$ 62	$ (263)
SCE \| Expire in 2022
Carryforwards
Loss carryforwards		6
Credit carryforwards		0
SCE \| Expire between 2024 to 2027
Carryforwards
Loss carryforwards		25
Credit carryforwards		0
SCE \| Expire between 2029 to 2043
Carryforwards
Loss carryforwards		870
Credit carryforwards		60
SCE \| No expiration date
Carryforwards
Loss carryforwards		1,450
Credit carryforwards		$ 0

Income Taxes (Rate Reconciliati

Income Taxes (Rate Reconciliation) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Statutory tax rate (as a percent)		21%
Income from operations before income taxes		$ 662	$ 789	$ 566
Provision for income tax at federal statutory rate of 21%		139	166	119
Increase (decrease) in income tax from:
State tax, net of federal benefit		(70)	(47)	(61)
Property-related		(219)	(233)	(320)
Change related to uncertain tax position			(147)	(15)
Wildfire related charges			31
Average rate assumption method ("ARAM") adjustment			87
Corporate-owned life insurance cash surrender value		(9)	(8)	(8)
Other		(3)	15	(20)
Total income tax expense (benefit)		$ (162)	$ (136)	$ (305)
Effective tax rate (as a percent)		(24.50%)	(17.20%)	(53.90%)
SCE
Income Tax Disclosure [Line Items]
Income from operations before income taxes		$ 845	$ 952	$ 665
Provision for income tax at federal statutory rate of 21%		177	200	140
Increase (decrease) in income tax from:
State tax, net of federal benefit		(57)	(33)	(52)
Property-related		(219)	(233)	(320)
Change related to uncertain tax position			(37)	(19)
Wildfire related charges			31
Average rate assumption method ("ARAM") adjustment	$ 87		87
Corporate-owned life insurance cash surrender value		(9)	(8)	(8)
Other		(1)	10	(18)
Total income tax expense (benefit)		$ (109)	$ 17	$ (277)
Effective tax rate (as a percent)		(12.90%)	1.80%	(41.70%)

Income Taxes (Unrecognized Tax

Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits
Beginning balance	$ 613	$ 679	$ 370
Tax positions taken during the current year, Increases	54	53	55
Tax positions taken during a prior year, Increases		3	274
Tax positions taken during a prior year, decreases	(21)	(118)	(20)
Settlements with taxing authorities		(4)
Ending balance	646	613	679
Unrecognized tax benefits that would impact the effective tax rate		341
SCE
Reconciliation of Unrecognized Tax Benefits
Beginning balance	340	320	282
Tax positions taken during the current year, Increases	54	53	56
Tax positions taken during a prior year, Increases		1	4
Tax positions taken during a prior year, decreases	(20)	(29)	(22)
Settlements with taxing authorities		(5)
Ending balance	$ 374	340	$ 320
Unrecognized tax benefits that would impact the effective tax rate		$ 69

Income Taxes (Interest and Pena

Income Taxes (Interest and Penalties) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Net after-tax interest and penalties tax (benefit) expense		$ (41)	$ 4
SCE
Income Tax Disclosure [Line Items]
Accrued interest and penalties	$ 23	20
Net after-tax interest and penalties tax (benefit) expense	$ 2	$ (2)	$ 6

Compensation and Benefit Plan_2

Compensation and Benefit Plans (Employee Savings Plan) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Contribution Plans [Line Items]
Employer contributions	$ 103	$ 97	$ 93
SCE
Defined Contribution Plans [Line Items]
Employer contributions	$ 101	$ 96	$ 92

Compensation and Benefit Plan_3

Compensation and Benefit Plans (Plan Assets and Obligation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Amounts recognized in the consolidated balance sheets consist of:
Long-term liabilities	$ (422)	$ (496)
SCE
Amounts recognized in the consolidated balance sheets consist of:
Long-term liabilities	(105)	(111)
Pension Plans
Change in projected benefit obligation
Projected benefit obligation at beginning of year	4,171	4,476
Service cost	120	130	$ 121
Interest cost	111	103	124
Actuarial (gain) loss	(589)	(245)
Benefits paid	(289)	(293)
Projected benefit obligation at end of year	3,524	4,171	4,476
Change in plan assets
Fair value of plan assets at beginning of year	4,296	4,171
Actual return on plan assets	(575)	368
Employer contributions	30	50
Benefits paid	(289)	(293)
Fair value of plan assets at end of year	3,462	4,296	$ 4,171
Funded status at end of year	(62)	125
Amounts recognized in the consolidated balance sheets consist of:
Long-term assets	139	384
Current liabilities	(26)	(26)
Long-term liabilities	(175)	(233)
Amounts recognized in the consolidated balance sheets	(62)	125
Amounts recognized in accumulated other comprehensive loss consist of:
Net loss	17	74
Amounts recognized as a regulatory (liability)/asset	(139)	(395)
Accumulated benefit obligation at end of year	3,401	3,947
Pension plans with an accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	3,524	4,171
Accumulated benefit obligation	3,401	3,947
Fair value of plan assets	$ 3,462	$ 4,296
Weighted average assumptions used to determine obligations at end of year:
Discount rate	5.36%	2.75%	2.38%
Rate of compensation increase	4%	4%
Assumed health care cost trend rates:
Long-term payable	$ 93	$ 132
Gain (loss) from change in discount rate	1,000	159
Gain (loss) from valuation and experience	456	69
Pension Plans \| SCE
Pension and Other Postretirement Benefits
Expected contributions	8
Change in projected benefit obligation
Projected benefit obligation at beginning of year	3,694	3,984
Service cost	118	127	$ 119
Service cost, excluding certain liabilities	115	126
Interest cost	101	95	114
Interest cost, excluding certain liabilities	97	92
Actuarial (gain) loss	(503)	(246)
Benefits paid	(244)	(262)
Projected benefit obligation at end of year	3,159	3,694	3,984
Change in plan assets
Fair value of plan assets at beginning of year	4,061	3,940
Actual return on plan assets	(544)	348
Employer contributions	2	35
Benefits paid	(244)	(262)
Fair value of plan assets at end of year	3,275	4,061	$ 3,940
Funded status at end of year	116	367
Amounts recognized in the consolidated balance sheets consist of:
Long-term assets	128	384
Current liabilities	(2)	(2)
Long-term liabilities	(10)	(15)
Amounts recognized in the consolidated balance sheets	116	367
Amounts recognized in accumulated other comprehensive loss consist of:
Net loss	8	12
Amounts recognized as a regulatory (liability)/asset	(139)	(395)
Accumulated benefit obligation at end of year	3,049	3,491
Pension plans with an accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	3,159	3,694
Accumulated benefit obligation	3,049	3,491
Fair value of plan assets	$ 3,275	$ 4,061
Weighted average assumptions used to determine obligations at end of year:
Discount rate	5.36%	2.75%
Rate of compensation increase	4%	4%
Assumed health care cost trend rates:
Ultimate rate	4.50%	4.50%	5%
Net loss reclassified from other comprehensive loss	$ 3	$ 32
Gain (loss) from change in discount rate	929	149
Gain (loss) from valuation and experience	430	83
Pension Plans \| Edison International Parent and Other
Pension and Other Postretirement Benefits
Expected contributions	35
Postretirement Benefits Other Than Pensions
Pension and Other Postretirement Benefits
Expected contributions	8
Change in projected benefit obligation
Projected benefit obligation at beginning of year	1,904	2,073
Service cost	34	40	$ 38
Interest cost	56	52	63
Actuarial (gain) loss	(598)	(190)
Plan participants' contributions	29	29
Benefits paid	(94)	(100)
Projected benefit obligation at end of year	1,331	1,904	2,073
Change in plan assets
Fair value of plan assets at beginning of year	2,772	2,717
Actual return on plan assets	(527)	119
Employer contributions	7	7
Plan participants' contributions	29	29
Benefits paid	(94)	(100)
Fair value of plan assets at end of year	2,187	2,772	$ 2,717
Funded status at end of year	856	868
Amounts recognized in the consolidated balance sheets consist of:
Long-term assets	871	885
Current liabilities	(8)	(8)
Long-term liabilities	(7)	(9)
Amounts recognized in the consolidated balance sheets	856	868
Amounts recognized in accumulated other comprehensive loss consist of:
Net loss	(2)	1
Amounts recognized as a regulatory (liability)/asset	$ (867)	$ (886)
Weighted average assumptions used to determine obligations at end of year:
Discount rate	5.43%	2.95%	2.67%
Assumed health care cost trend rates:
Rate assumed for following year	6.75%	6.25%
Ultimate rate	5%	5%	5%
Gain (loss) from change in discount rate	$ 546	$ 83
Gain (loss) from valuation and experience		113
Postretirement Benefits Other Than Pensions \| SCE
Change in projected benefit obligation
Projected benefit obligation at beginning of year	1,895	2,064
Service cost	34	40	$ 37
Interest cost	55	52	63
Actuarial (gain) loss	(596)	(190)
Plan participants' contributions	29	29
Benefits paid	(94)	(100)
Projected benefit obligation at end of year	1,323	1,895	2,064
Change in plan assets
Fair value of plan assets at beginning of year	2,772	2,717
Actual return on plan assets	(527)	119
Employer contributions	7	7
Plan participants' contributions	29	29
Benefits paid	(94)	(100)
Fair value of plan assets at end of year	2,187	2,772	$ 2,717
Funded status at end of year	864	877
Amounts recognized in the consolidated balance sheets consist of:
Long-term assets	871	885
Current liabilities	(7)	(8)
Amounts recognized in the consolidated balance sheets	864	877
Amounts recognized in accumulated other comprehensive loss consist of:
Amounts recognized as a regulatory (liability)/asset	$ (867)	$ (886)
Weighted average assumptions used to determine obligations at end of year:
Discount rate	5.43%	2.95%
Assumed health care cost trend rates:
Rate assumed for following year	6.75%	6.25%
Ultimate rate	5%	5%
Gain (loss) from change in discount rate	$ 543

Compensation and Benefit Plan_4

Compensation and Benefit Plans (Expenses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Plans
Pension and Other Postretirement Benefits
Service cost	$ 120	$ 130	$ 121
Non-service cost (benefit)
Interest cost	111	103	124
Expected return on plan assets	(227)	(222)	(215)
Settlement costs	4
Amortization of prior service cost		1	2
Amortization of net (gain) loss	5	11	10
Regulatory adjustment	6	25	16
Total non-service benefit	(101)	(82)	(63)
Total expense recognized	19	48	58
Postretirement Benefits Other Than Pensions
Pension and Other Postretirement Benefits
Service cost	34	40	38
Non-service cost (benefit)
Interest cost	56	52	63
Expected return on plan assets	(97)	(106)	(119)
Amortization of prior service cost	(2)	(1)	(1)
Amortization of net (gain) loss	(45)	(35)	(29)
Regulatory adjustment	55	51	49
Total non-service benefit	(33)	(39)	(37)
Total expense	1	1	1
SCE
Non-service cost (benefit)
Total non-service benefit	(136)	(123)	(102)
SCE \| Pension Plans
Pension and Other Postretirement Benefits
Service cost	118	127	119
Non-service cost (benefit)
Interest cost	101	95	114
Expected return on plan assets	(215)	(211)	(203)
Settlement costs	4
Amortization of prior service cost		1	1
Amortization of net (gain) loss	2	7	7
Regulatory adjustment	6	25	16
Total non-service benefit	(102)	(83)	(65)
Total expense recognized	16	44	54
SCE \| Postretirement Benefits Other Than Pensions
Pension and Other Postretirement Benefits
Service cost	34	40	37
Non-service cost (benefit)
Interest cost	55	52	63
Expected return on plan assets	(97)	(106)	(119)
Amortization of prior service cost	(2)	(1)	(1)
Amortization of net (gain) loss	(45)	(36)	(29)
Regulatory adjustment	55	51	49
Total non-service benefit	$ (34)	$ (40)	$ (37)

Compensation and Benefit Plan_5

Compensation and Benefit Plans (OCI) (Details) - Pension Plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension and Other Postretirement Benefits
Net (gain) loss	$ (45)	$ (10)	$ 11
Settlement charges	(4)
Amortization of net loss	(8)	(11)	(10)
Total (gain) loss recognized in other comprehensive income	(57)	(21)	1
Total recognized in expense and other comprehensive income	(38)	27	59
SCE
Pension and Other Postretirement Benefits
Net (gain) loss	(24)	(5)	9
Settlement charges	(4)
Amortization of net loss	(5)	(7)	(7)
Total (gain) loss recognized in other comprehensive income	(33)	(12)	2
Total recognized in expense and other comprehensive income	$ (17)	$ 32	$ 56

Compensation and Benefit Plan_6

Compensation and Benefit Plans (Assumptions) (Details)	12 Months Ended
Compensation and Benefit Plans (Assumptions) (Details)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Postretirement Benefits Other Than Pensions
Pension and Other Postretirement Benefits
Discount rate	2.95%	2.67%	3.32%
Expected long-term return on plan assets	3.50%	4%	4.90%
Assumed health care cost trend rates:
Current year	6.25%	6.50%	6.50%
Ultimate rate	5%	5%	5%
SCE \| Postretirement Benefits Other Than Pensions
Assumed health care cost trend rates:
Ultimate rate	5%	5%
SCE \| Pension Plans
Pension and Other Postretirement Benefits
Discount rate	2.75%	2.38%	3.11%
Rate of compensation increase	4%	4%	4.10%
Expected long-term return on plan assets	5.50%	5.50%	6%
Assumed health care cost trend rates:
Starting rate	3.12%	3.03%	3.61%
Ultimate rate	4.50%	4.50%	5%

Compensation and Benefit Plan_7

Compensation and Benefit Plans (Future Benefit Payments) (Details) $ in Millions	Dec. 31, 2022 USD ($)
Pension Plans
Years ended December 31,
2022	$ 310
2023	314
2024	313
2025	321
2026	308
2027 - 2031	1,428
Postretirement Benefits Other Than Pensions
Years ended December 31,
2022	78
2023	81
2024	82
2025	84
2026	86
2027 - 2031	450
SCE \| Pension Plans
Years ended December 31,
2022	269
2023	274
2024	276
2025	282
2026	276
2027 - 2031	1,291
SCE \| Postretirement Benefits Other Than Pensions
Years ended December 31,
2022	78
2023	80
2024	82
2025	84
2026	85
2027 - 2031	$ 447

Compensation and Benefit Plan_8

Compensation and Benefit Plans (Pension Textual) (Details)	12 Months Ended
Compensation and Benefit Plans (Pension Textual) (Details)	Dec. 31, 2022 USD ($) plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Health reimbursement monthly contribution \| $	$ 200
Permissible range of asset class weights (percent)	5%
Assumed average equity risk premium (percent)	5%
Forecasted return on private equity and opportunistic investments (percent)	4%
Pension Plans \| US Equities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocations (percent)	19.10%
Pension Plans \| Non-US Equities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocations (percent)	10.90%
Pension Plans \| Fixed Income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocations (percent)	55%
Pension Plans \| Opportunistic Alternative Investments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocations (percent)	15%
Postretirement Benefits Other Than Pensions
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Eligibility age	55 years
Service period for eligibility (at least) (years)	10 years
Postretirement Benefits Other Than Pensions \| Fixed Income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocations (percent)	50%
Postretirement Benefits Other Than Pensions \| Opportunistic Alternative Investments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocations (percent)	6%
Postretirement Benefits Other Than Pensions \| Global Equities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocations (percent)	44%
Voluntary Employee Beneficiary Association (VEBA) \| Non-US Equities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocations (percent)	95%
Voluntary Employee Beneficiary Association (VEBA) \| Global Equities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocations (percent)	5%
SCE \| Voluntary Employee Beneficiary Association (VEBA)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of plans \| plan	3

Compensation and Benefit Plan_9

Compensation and Benefit Plans (Pension Assets Fair Value) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Domestic mortgage backed securities
Pension and Other Postretirement Benefits
Actual plan asset allocations, percentage		20%
Pension Plans
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 3,545	$ 4,323
Receivables and payables, net	(83)	(27)
Net plan assets available for benefits	$ 3,462	$ 4,296	$ 4,171
Publicly traded equity investments located in the US (percent)	61%	62%
Pension Plans \| Level 1
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 728	$ 748
Pension Plans \| Level 2
Pension and Other Postretirement Benefits
Fair value of plan assets	1,317	1,782
Pension Plans \| NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	1,500	1,793
Pension Plans \| Government and agency securities
Pension and Other Postretirement Benefits
Fair value of plan assets	574	1,135
Pension Plans \| Government and agency securities \| Level 1
Pension and Other Postretirement Benefits
Fair value of plan assets	281	217
Pension Plans \| Government and agency securities \| Level 2
Pension and Other Postretirement Benefits
Fair value of plan assets	293	918
Pension Plans \| Government and agency securities \| NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Corporate stocks
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 230	$ 470
Pension Plans \| Corporate stocks \| Russell Indexes
Pension and Other Postretirement Benefits
Performance percentage benchmark, percentage	36%	44%
Pension Plans \| Corporate stocks \| MSCI
Pension and Other Postretirement Benefits
Performance percentage benchmark, percentage	64%	56%
Pension Plans \| Corporate stocks \| Level 1
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 227	$ 466
Pension Plans \| Corporate stocks \| Level 2
Pension and Other Postretirement Benefits
Fair value of plan assets	3	4
Pension Plans \| Corporate stocks \| NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Corporate bonds
Pension and Other Postretirement Benefits
Fair value of plan assets	973	815
Pension Plans \| Corporate bonds \| Level 1
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 0
Actual plan asset allocations, percentage	56%
Pension Plans \| Corporate bonds \| Level 2
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 973	815
Pension Plans \| Corporate bonds \| NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Collateralized mortgage obligations and other asset backed securities
Pension and Other Postretirement Benefits
Fair value of plan assets	67	61
Pension Plans \| Common/collective funds
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 658	$ 964
Pension Plans \| Common/collective funds \| Standard and Poor's 500
Pension and Other Postretirement Benefits
Performance percentage benchmark, percentage	41%	41%
Pension Plans \| Common/collective funds \| Russell 1000 Index
Pension and Other Postretirement Benefits
Performance percentage benchmark, percentage		10%
Pension Plans \| Common/collective funds \| MSCI all country world index exUS
Pension and Other Postretirement Benefits
Performance percentage benchmark, percentage	46%	38%
Pension Plans \| Common/collective funds \| Non-index U.S. equity fund
Pension and Other Postretirement Benefits
Performance percentage benchmark, percentage	11%	9%
Pension Plans \| Common/collective funds \| Level 1
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 0
Pension Plans \| Common/collective funds \| Level 2
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Common/collective funds \| NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	658	$ 964
Pension Plans \| Partnerships/joint ventures
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 613	688
Actual plan asset allocations, percentage	18%
Pension Plans \| Partnerships/joint ventures \| Level 1
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 0
Pension Plans \| Partnerships/joint ventures \| Level 2
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Partnerships/joint ventures \| NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	613	688
Pension Plans \| Other investment entities
Pension and Other Postretirement Benefits
Fair value of plan assets	63	110
Pension Plans \| Other investment entities \| Level 1
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Other investment entities \| Level 2
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Other investment entities \| NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	63	110
Pension Plans \| Registered investment companies
Pension and Other Postretirement Benefits
Fair value of plan assets	365	88
Pension Plans \| Registered investment companies \| Level 1
Pension and Other Postretirement Benefits
Fair value of plan assets	206	$ 57
Actual plan asset allocations, percentage		63%
Pension Plans \| Registered investment companies \| Level 2
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Registered investment companies \| NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	159	$ 31
Pension Plans \| Interest-bearing cash
Pension and Other Postretirement Benefits
Fair value of plan assets	14	8
Pension Plans \| Interest-bearing cash \| Level 1
Pension and Other Postretirement Benefits
Fair value of plan assets	14	8
Pension Plans \| Interest-bearing cash \| Level 2
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Interest-bearing cash \| NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Other investments
Pension and Other Postretirement Benefits
Fair value of plan assets	55	45
Pension Plans \| Other investments \| Level 1
Pension and Other Postretirement Benefits
Fair value of plan assets	0
Pension Plans \| Other investments \| Level 2
Pension and Other Postretirement Benefits
Fair value of plan assets	48	$ 45
Pension Plans \| Other investments \| NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 7
Pension Plans \| Private equity and venture capital funds including branded consumer products, clean and information technology and healthcare
Pension and Other Postretirement Benefits
Actual plan asset allocations, percentage	76%	62%
Pension Plans \| Asset backed securities including distressed mortgages
Pension and Other Postretirement Benefits
Actual plan asset allocations, percentage		17%
Pension Plans \| Publicly traded fixed income securities
Pension and Other Postretirement Benefits
Actual plan asset allocations, percentage		15%
Pension Plans \| Broad range of financial assets in all global markets
Pension and Other Postretirement Benefits
Actual plan asset allocations, percentage	2%	3%
Pension Plans \| Emerging market equity securities
Pension and Other Postretirement Benefits
Actual plan asset allocations, percentage		71%
Pension Plans \| Domestic mortgage backed securities
Pension and Other Postretirement Benefits
Actual plan asset allocations, percentage	64%
Pension Plans \| High yield debt securities
Pension and Other Postretirement Benefits
Actual plan asset allocations, percentage	36%
Pension Plans \| Equity Funds
Pension and Other Postretirement Benefits
Actual plan asset allocations, percentage	22%
Pension Plans \| Fixed Income Funds
Pension and Other Postretirement Benefits
Actual plan asset allocations, percentage	21%	35%
SCE \| Pension Plans
Pension and Other Postretirement Benefits
Net plan assets available for benefits	$ 3,275	$ 4,061	$ 3,940

Compensation and Benefit Pla_10

Compensation and Benefit Plans (OPEB Assets Fair Value) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Domestic mortgage backed securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual plan asset allocations, percentage		20%
Postretirement Benefits Other Than Pensions
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 2,193	$ 2,773
Receivables and payables, net	(6)	(1)
Net plan assets available for benefits	$ 2,187	$ 2,772	$ 2,717
Publicly traded equity investments located in the US (percent)	70%	68%
Postretirement Benefits Other Than Pensions \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 380	$ 1,002
Postretirement Benefits Other Than Pensions \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	1,281	1,120
Postretirement Benefits Other Than Pensions \| NAV
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	532	651
Postretirement Benefits Other Than Pensions \| Government and agency securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	526	823
Postretirement Benefits Other Than Pensions \| Government and agency securities \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	222	813
Postretirement Benefits Other Than Pensions \| Government and agency securities \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	304	10
Postretirement Benefits Other Than Pensions \| Government and agency securities \| NAV
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Corporate stocks
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 105	$ 148
Postretirement Benefits Other Than Pensions \| Corporate stocks \| Russell Indexes
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Performance percentage benchmark, percentage	73%	73%
Postretirement Benefits Other Than Pensions \| Corporate stocks \| MSCI All Country World Index
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Performance percentage benchmark, percentage	27%	27%
Postretirement Benefits Other Than Pensions \| Corporate stocks \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 103	$ 145
Postretirement Benefits Other Than Pensions \| Corporate stocks \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	2	3
Postretirement Benefits Other Than Pensions \| Corporate stocks \| NAV
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Corporate notes and bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	860	997
Postretirement Benefits Other Than Pensions \| Corporate notes and bonds \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Corporate notes and bonds \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	860	997
Postretirement Benefits Other Than Pensions \| Corporate notes and bonds \| NAV
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Common/collective funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 413	$ 544
Postretirement Benefits Other Than Pensions \| Common/collective funds \| Non-index U.S. equity fund
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual plan asset allocations, percentage	27%	25%
Postretirement Benefits Other Than Pensions \| Common/collective funds \| MSCI All Country World Index Investable Market Index
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual plan asset allocations, percentage	53%	65%
Postretirement Benefits Other Than Pensions \| Common/collective funds \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 0	$ 0
Postretirement Benefits Other Than Pensions \| Common/collective funds \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Common/collective funds \| NAV
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	413	544
Postretirement Benefits Other Than Pensions \| Partnerships/joint ventures
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	119	107
Postretirement Benefits Other Than Pensions \| Partnerships/joint ventures \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Partnerships/joint ventures \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Partnerships/joint ventures \| NAV
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	119	107
Postretirement Benefits Other Than Pensions \| Registered investment companies
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	55	44
Postretirement Benefits Other Than Pensions \| Registered investment companies \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	55	44
Postretirement Benefits Other Than Pensions \| Registered investment companies \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Registered investment companies \| NAV
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Interest-bearing cash
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	56	51
Postretirement Benefits Other Than Pensions \| Interest-bearing cash \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Interest-bearing cash \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	56	51
Postretirement Benefits Other Than Pensions \| Interest-bearing cash \| NAV
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Other investments
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	59	59
Postretirement Benefits Other Than Pensions \| Other investments \| Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Other investments \| Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	59	59
Postretirement Benefits Other Than Pensions \| Other investments \| NAV
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	0	0
Postretirement Benefits Other Than Pensions \| Collateralized mortgage obligations and other asset backed securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Receivables and payables, net	$ 150	$ 150
Postretirement Benefits Other Than Pensions \| Private equity and venture capital funds including branded consumer products, clean and information technology and healthcare
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual plan asset allocations, percentage	63%	54%
Postretirement Benefits Other Than Pensions \| Asset backed securities including distressed mortgages
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual plan asset allocations, percentage	31%	35%
Postretirement Benefits Other Than Pensions \| Broad range of financial assets in all global markets
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual plan asset allocations, percentage	6%	11%
Postretirement Benefits Other Than Pensions \| Municipal securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 53	$ 44
Postretirement Benefits Other Than Pensions \| Money Market Fund
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual plan asset allocations, percentage	75%	61%
Postretirement Benefits Other Than Pensions \| Defined Benefit Plan, Equity Securities, Small Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actual plan asset allocations, percentage	25%	39%
SCE \| Postretirement Benefits Other Than Pensions
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net plan assets available for benefits	$ 2,187	$ 2,772	$ 2,717

Compensation and Benefit Pla_11

Compensation and Benefit Plans (Expense) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation
Performance incentive plan award (in shares)	71
Stock-based compensation expense	$ 42	$ 39	$ 29
Income tax benefits related to stock-based compensation expense	9	4	4
Stock options
Share-based Compensation
Stock-based compensation expense	13	16	15
Performance shares
Share-based Compensation
Stock-based compensation expense	13	9	5
Restricted stock units
Share-based Compensation
Stock-based compensation expense	14	12	8
Other stock awards
Share-based Compensation
Stock-based compensation expense	2	2	1
SCE
Share-based Compensation
Stock-based compensation expense	22	20	13
Income tax benefits related to stock-based compensation expense	5	3	3
SCE \| Stock options
Share-based Compensation
Stock-based compensation expense	7	8	7
SCE \| Performance shares
Share-based Compensation
Stock-based compensation expense	6	4	2
SCE \| Restricted stock units
Share-based Compensation
Stock-based compensation expense	9	8	4
SCE \| Other stock awards
Share-based Compensation
Stock-based compensation expense	$ 0	$ 0	$ 0

Compensation and Benefit Pla_12

Compensation and Benefit Plans (Option Pricing) (Details) - Stock options	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation
Stock options, expiration period, years	10 years
Expected terms (in years)	5 years	5 years 4 months 24 days	5 years 2 months 12 days
Risk-free interest rate, minimum	1.60%	1.10%	0.40%
Risk-free interest rate, maximum	4.10%	1.30%	0.60%
Weighted average expected dividend yield	4%	4.50%	4.70%
Expected volatility, minimum	27.80%	26.90%	24.90%
Expected volatility, maximum	28.60%	27.10%	26.90%
Weighted average volatility	27.80%	26.90%	25%
Volatility period	60 months	64 months	63 months
Minimum
Share-based Compensation
Stock options, vesting period, years	3 years
Expected dividend yield	4%	4.10%	4.20%
Maximum
Share-based Compensation
Stock options, vesting period, years	4 years
Expected dividend yield	5%	4.80%	5%

Compensation and Benefit Pla_13

Compensation and Benefit Plans (Option Activity) (Details) - Stock options $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Stock Options
Beginning balance (in shares) \| shares	12,354,826
Grants (in shares) \| shares	909,504
Forfeited or expired (in shares) \| shares	(223,836)
Exercised (in shares) \| shares	(1,156,938)
Ending balance (in shares) \| shares	11,883,556
Vested and expected to vest (in shares) \| shares	11,538,210
Exercisable (in shares) \| shares	8,074,165
Weighted Average Grant Date Fair Value
Beginning balance, weighted average exercise price (in dollars per share) \| $ / shares	$ 62.78
Granted, weighted average exercise price (in dollars per share) \| $ / shares	63.67
Forfeited or expired, weighted average exercise price (in dollars per share) \| $ / shares	64.89
Exercised, weighted average exercise price (in dollars per share) \| $ / shares	54.16
Ending balance, weighted average exercise price (in dollars per share) \| $ / shares	63.64
Vested and expected to vest, weighted average exercise price (in dollars per share) \| $ / shares	63.73
Exercisable, weighted average exercise price (in dollars per share) \| $ / shares	$ 64.94
Remaining Contractual Term (Years)
Outstanding at December 31, 2016 (term)	5 years 5 months 4 days
Vested and expected to vest at December 31, 2016 (term)	5 years 4 months 6 days
Exercisable at December 31, 2016 (term)	4 years 3 months 21 days
Aggregate Intrinsic Value (in millions)
Vested and expected to vest at December 31, 2019 \| $	$ 30
Exercisable at December 31, 2019 \| $	17
Exercise of option, tax benefit \| $	$ 5
SCE
Stock Options
Beginning balance (in shares) \| shares	6,180,154
Grants (in shares) \| shares	470,852
Forfeited or expired (in shares) \| shares	(143,235)
Exercised (in shares) \| shares	(810,294)
Transfers, net (in shares) \| shares	100,155
Ending balance (in shares) \| shares	5,797,632
Vested and expected to vest (in shares) \| shares	5,620,440
Exercisable (in shares) \| shares	3,849,057
Weighted Average Grant Date Fair Value
Beginning balance, weighted average exercise price (in dollars per share) \| $ / shares	$ 62.03
Granted, weighted average exercise price (in dollars per share) \| $ / shares	63.51
Forfeited or expired, weighted average exercise price (in dollars per share) \| $ / shares	64.83
Exercised, weighted average exercise price (in dollars per share) \| $ / shares	53.78
Affiliate transfers, net, weighted average grant date fair value (in dollars per share) \| $ / shares	66.09
Ending balance, weighted average exercise price (in dollars per share) \| $ / shares	63.31
Vested and expected to vest, weighted average exercise price (in dollars per share) \| $ / shares	63.40
Exercisable, weighted average exercise price (in dollars per share) \| $ / shares	$ 64.64
Remaining Contractual Term (Years)
Outstanding at December 31, 2016 (term)	5 years 5 months 12 days
Vested and expected to vest at December 31, 2016 (term)	5 years 4 months 17 days
Exercisable at December 31, 2016 (term)	4 years 3 months 10 days
Aggregate Intrinsic Value (in millions)
Vested and expected to vest at December 31, 2019 \| $	$ 17
Exercisable at December 31, 2019 \| $	9
Exercise of option, tax benefit \| $	$ 3

Compensation and Benefit Pla_14

Compensation and Benefit Plans (Unrecognized Comp) (Details) - Stock options $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Pension and Other Postretirement Benefits
Unrecognized compensation cost, net of expected forfeitures (in millions)	$ 12
Weighted average period (in years)	1 year 9 months 18 days
SCE
Pension and Other Postretirement Benefits
Unrecognized compensation cost, net of expected forfeitures (in millions)	$ 6
Weighted average period (in years)	1 year 9 months 18 days

Compensation and Benefit Pla_15

Compensation and Benefit Plans (Options Data) (Details) - Stock options - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation
Weighted average grant date fair value per option granted (in dollars per share)	$ 9.92	$ 7.26	$ 8.18
Fair value of options vested	$ 8	$ 3	$ 2
Value of options exercised	$ 17	$ 8	$ 9
SCE
Share-based Compensation
Weighted average grant date fair value per option granted (in dollars per share)	$ 9.92	$ 7.30	$ 8.16
Fair value of options vested	$ 5	$ 3	$ 2
Value of options exercised	$ 12	$ 6	$ 7

Compensation and Benefit Pla_16

Compensation and Benefit Plans (Non Option Activity) (Details)	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Performance shares
Shares
Beginning balance (in shares) \| shares	262,808
Granted (in shares) \| shares	265,916
Forfeited (in shares) \| shares	(17,643)
Vested (in shares) \| shares	(108,251)
Ending balance (in shares) \| shares	402,830
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share) \| $ / shares	$ 61.92
Granted (in dollars per share) \| $ / shares	67.88
Forfeited (in dollars per share) \| $ / shares	64.68
Vested (in dollars per share) \| $ / shares	67.55
Ending balance (in dollars per share) \| $ / shares	$ 64.22
Restricted stock units
Shares
Beginning balance (in shares) \| shares	546,155
Granted (in shares) \| shares	298,558
Forfeited (in shares) \| shares	(24,780)
Vested (in shares) \| shares	(121,751)
Ending balance (in shares) \| shares	698,182
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share) \| $ / shares	$ 59.44
Granted (in dollars per share) \| $ / shares	63.58
Forfeited (in dollars per share) \| $ / shares	60.42
Vested (in dollars per share) \| $ / shares	62.76
Ending balance (in dollars per share) \| $ / shares	$ 60.60
SCE \| Performance shares
Shares
Beginning balance (in shares) \| shares	137,807
Granted (in shares) \| shares	138,254
Forfeited (in shares) \| shares	(12,565)
Vested (in shares) \| shares	(54,487)
Affiliate transfers, net (in shares) \| shares	1,064
Ending balance (in shares) \| shares	210,073
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share) \| $ / shares	$ 61.50
Granted (in dollars per share) \| $ / shares	67.74
Forfeited (in dollars per share) \| $ / shares	65.60
Vested (in dollars per share) \| $ / shares	67.37
Affiliate transfers (in dollars per share) \| $ / shares	59.25
Ending balance (in dollars per share) \| $ / shares	$ 63.93
SCE \| Restricted stock units
Shares
Beginning balance (in shares) \| shares	344,932
Granted (in shares) \| shares	218,721
Forfeited (in shares) \| shares	(19,073)
Vested (in shares) \| shares	(62,034)
Affiliate transfers, net (in shares) \| shares	5,789
Ending balance (in shares) \| shares	488,335
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share) \| $ / shares	$ 58.45
Granted (in dollars per share) \| $ / shares	63.58
Forfeited (in dollars per share) \| $ / shares	60.37
Vested (in dollars per share) \| $ / shares	62.91
Affiliate transfers (in dollars per share) \| $ / shares	57.64
Ending balance (in dollars per share) \| $ / shares	$ 60.13

Investments (Trust Value) (Deta

Investments (Trust Value) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair Value
Fair Value	$ 3,948	$ 4,870
SCE
Fair Value
Fair Value	3,948	4,870
SCE \| Total debt securities and other
Fair Value
Amortized Cost	2,158	2,555
Fair Value	2,338	2,898
SCE \| Government and agency securities
Fair Value
Amortized Cost	1,025	1,095
Fair Value	1,091	1,212
SCE \| Corporate bonds
Fair Value
Amortized Cost	351	386
Fair Value	377	446
SCE \| Municipal bonds
Fair Value
Amortized Cost	672	875
Fair Value	754	1,033
SCE \| Short-term investments and receivables/payables
Fair Value
Amortized Cost	110	199
Fair Value	116	207
SCE \| Repurchase agreements
Fair Value
Fair Value	$ 41	$ 37
Repurchase agreement secured by US Treasury Securities (as a percent)	97%	100%
SCE \| Equity securities
Fair Value
Fair Value	$ 1,610	$ 1,972
SCE \| Fair Value, Measurements, Recurring
Fair Value
Fair Value	$ 4,033	$ 4,889

Investments (Trust Info) (Detai

Investments (Trust Info) (Details) - SCE - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Investments
Cumulative unrealized holding gains, net of losses	$ 1,600	$ 2,100
Deferred income taxes related to unrealized gains	321	517
Nuclear decommissioning trusts, net of deferred tax	$ 3,600	$ 4,400

Investments (Trust gain loss) (

Investments (Trust gain loss) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments
Gross realized gains	$ 150	$ 339	$ 255
Gross realized losses	(127)	(24)	(6)
Net unrealized (losses) gains for equity securities	$ (369)	$ 103	$ 176

Investments (Other) (Details)

Investments (Other) (Details) - Edison International Parent and Other - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Investments
Marketable securities	$ 5	$ 12
Equity investments without readily determinable fair values	12	3
Cumulative upward adjustments investments without readily determinable fair values	9	1
Marketable securities, Unrealized gains/(losses)	(6)	3
Equity investments without readily determinable fair values - upward adjustments	8	1
Total unrealized gains/(losses)	$ 2	$ 4

Regulatory Assets and Liabili_3

Regulatory Assets and Liabilities (Textual) (Details) - SCE	12 Months Ended
Regulatory Assets and Liabilities (Textual) (Details) - SCE	Dec. 31, 2022	Dec. 31, 2021
Regulatory Assets [Line Items]
Regulatory assets, energy derivatives, low range of contract expiration (in years)	1 year	1 year
Regulatory assets, energy derivatives, high range of contract expiration (in years)	4 years	4 years
Regulatory assets related to deferred income taxes, recovery period, low range (in years)	1 year	1 year
Regulatory assets related to deferred income taxes, recovery period, high range (in years)	60 years	60 years
Low end of the range of remaining original amortization (in years)	10 years	10 years
High end of the range of remaining original amortization (in years)	40 years	40 years
Unamortized investments, net of accumulated amortization
Regulatory Assets [Line Items]
Return rate earned on assets included in rate base (as a percent)	7.68%	7.68%

Regulatory Assets and Liabili_4

Regulatory Assets and Liabilities (Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Regulatory Assets [Line Items]
Current regulatory assets	$ 2,497	$ 1,778
Regulatory assets: non-current	8,181	7,660
SCE
Regulatory Assets [Line Items]
Current regulatory assets	2,497	1,778
Regulatory assets: non-current	8,181	7,660
Total regulatory assets	10,678	9,438
SCE \| Regulatory balancing accounts
Regulatory Assets [Line Items]
Current regulatory assets	2,400	1,591
Regulatory assets: non-current	1,589	1,897
SCE \| Power contracts
Regulatory Assets [Line Items]
Current regulatory assets	71	168
Regulatory assets: non-current		71
SCE \| Deferred income taxes, net of liabilities
Regulatory Assets [Line Items]
Regulatory assets: non-current	5,178	4,770
SCE \| Unamortized investments, net of accumulated amortization
Regulatory Assets [Line Items]
Regulatory assets: non-current	113	114
SCE \| Unamortized loss on reacquired debt
Regulatory Assets [Line Items]
Regulatory assets: non-current	109	121
SCE \| Environmental remediation
Regulatory Assets [Line Items]
Regulatory assets: non-current	241	242
SCE \| Recovery assets
Regulatory Assets [Line Items]
Regulatory assets: non-current	834	325
SCE \| Other regulatory assets or liabilities
Regulatory Assets [Line Items]
Current regulatory assets	26	19
Regulatory assets: non-current	$ 117	$ 120

Regulatory Assets and Liabili_5

Regulatory Assets and Liabilities (Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Regulatory Liabilities [Line Items]
Current regulatory liabilities	$ 964	$ 603
Long-term regulatory liabilities	8,211	8,981
SCE
Regulatory Liabilities [Line Items]
Current regulatory liabilities	964	603
Long-term regulatory liabilities	8,211	8,981
Total regulatory liabilities	9,175	9,584
SCE \| Revenue subject to refund
Regulatory Liabilities [Line Items]
Current regulatory liabilities	584	553
Long-term regulatory liabilities	1,116	648
SCE \| Energy derivatives
Regulatory Liabilities [Line Items]
Current regulatory liabilities	338	25
SCE \| Costs of removal
Regulatory Liabilities [Line Items]
Long-term regulatory liabilities	2,589	2,552
SCE \| Re-measurement of deferred taxes
Regulatory Liabilities [Line Items]
Long-term regulatory liabilities	2,250	2,315
SCE \| Recoveries in excess of ARO liabilities
Regulatory Liabilities [Line Items]
Long-term regulatory liabilities	1,231	2,155
SCE \| Pension and other postretirement benefits
Regulatory Liabilities [Line Items]
Long-term regulatory liabilities	1,007	1,281
SCE \| Other regulatory assets or liabilities
Regulatory Liabilities [Line Items]
Current regulatory liabilities	42	25
Long-term regulatory liabilities	$ 18	$ 30

Regulatory Assets and Liabili_6

Regulatory Assets and Liabilities (Balancing Accounts) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	$ 2,289	$ 2,287
Percentage of vegetation management	115%	115%
Percentage of Wildfire Covered Conductor Program	110%	110%
Energy resource recovery account
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	$ 1,580	$ 759
Portfolio allocation balancing account
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	(73)	(183)
New system generation balancing account
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	(63)	73
Public purpose programs and energy efficiency programs
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	(1,577)	(1,066)
Base revenue requirement balancing account
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	1,108	849
GRC wildfire mitigation balancing accounts
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	67	12
Greenhouse gas auction revenue and low carbon fuel standard revenue
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	(289)	(298)
FERC balancing accounts
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	(123)	55
Wildfire and drought restoration accounts
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	352	299
Wildfire expense memorandum account
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	1,168	1,456
COVID 19-related memorandum accounts
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	67	94
Customer service re-platform (CSRP)
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	64	128
Tax accounting memorandum account and pole loading balancing account
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	90	171
Excess Bond and Power Charge Balancing Account
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	(56)
Other balancing account
Regulatory Assets and Liabilities
Net regulatory assets (liabilities)	$ (26)	$ (62)

Commitments and Contingencies_2

Commitments and Contingencies (Purchase obligations) (Details) - SCE - Power Purchase Agreement $ in Millions	Dec. 31, 2022 USD ($)
Long-term Purchase Commitment [Line Items]
2023	$ 3,106
2024	2,596
2025	2,409
2026	2,401
2027	2,221
Thereafter	18,000
Total	$ 30,733

Commitments and Contingencies_3

Commitments and Contingencies (Unrecorded) (Details) - SCE - Power Purchase Agreement - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Unrecorded Unconditional Purchase Obligation [Line Items]
2023	$ 29
2024	123
2025	171
2026	182
2027	186
Thereafter	1,864
Long-term lease expense	393
Purchase cost	$ 5,100	$ 4,700	$ 3,800

Commitments and Contingencies_4

Commitments and Contingencies (Other commitments) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Commitments [Line Items]
2023	$ 46
2024	52
2025	50
2026	46
2027	35
Thereafter	203
Total	432
Other contractual obligations
Other Commitments [Line Items]
Purchase cost	$ 58	$ 62	$ 80

Commitments and Contingencies_5

Commitments and Contingencies (Wildfires and Mudslides) (Details) $ in Millions	1 Months Ended
	Sep. 30, 2022 USD ($) a item individual	May 31, 2022 USD ($) a item individual	Sep. 30, 2020 USD ($) a item individual	Oct. 31, 2019 a item individual	Nov. 30, 2018 a individual item	Jan. 31, 2018 individual item	Dec. 17, 2017 a individual item
Coastal Fire
Commitments and Contingencies
Acres burned \| a		200
Structures destroyed		20
Structures damaged		11
Number of Injured \| individual		2
Estimated fire suppression costs \| $		$ 3
Fairview Fire
Commitments and Contingencies
Acres burned \| a	28,000
Structures destroyed	22
Structures damaged	5
Fatalities \| individual	2
Number of civilian injury \| individual	1
Number of Injured \| individual	2
Estimated fire suppression costs \| $	$ 39
Fairview Fire \| Minor structures
Commitments and Contingencies
Structures damaged	17
SCE \| December 2017 Wildfires
Commitments and Contingencies
Acres burned \| a							280,000
Structures destroyed							1,343
Fatalities \| individual							2
SCE \| November 2018 Wildfires
Commitments and Contingencies
Acres burned \| a					100,000
Structures destroyed					1,643
Structures damaged					364
Fatalities \| individual					3
Additional fatalities \| individual					4
SCE \| Montecito Mudslides
Commitments and Contingencies
Structures destroyed						135
Structures damaged						324
Fatalities \| individual						21
Additional fatalities \| individual						2
SCE \| Saddle Ridge Fire
Commitments and Contingencies
Acres burned \| a				9,000
Structures destroyed				19
Structures damaged				88
Number of Injured \| individual				8
SCE \| Bobcat fire
Commitments and Contingencies
Acres burned \| a			116,000
Number of Injured \| individual			6
Estimated fire suppression costs \| $			$ 80
SCE \| Bobcat fire \| Homes
Commitments and Contingencies
Structures destroyed			87
Structures damaged			28
SCE \| Bobcat fire \| Commercial property
Commitments and Contingencies
Structures destroyed			1
SCE \| Bobcat fire \| Minor structures
Commitments and Contingencies
Structures destroyed			83
Structures damaged			19

Commitments and Contingencies_6

Commitments and Contingencies (Wildfires litigation) (Details) $ in Millions	1 Months Ended					3 Months Ended					12 Months Ended
	Oct. 31, 2021 USD ($)	Apr. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jan. 31, 2021 $ / claim	Oct. 31, 2020 USD ($) $ / claim	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2022 USD ($) plaintiff	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Increase in accrued estimated losses											$ 1,296	$ 1,265
Expected revenue from FERC customers											76	67
Total pre-tax charge											1,220	1,198
Total after-tax charge											879	894
Payments											1,911
Charge for wildfire-related claims						$ 1,119					1,119	1,734
2017/2018 Wildfire/Mudslide Events \| Settled Litigation
Commitments and Contingencies
Charge for wildfire-related claims						185					185
2017/2018 Wildfire/Mudslide Events \| Settled Litigation \| SED Settlement
Commitments and Contingencies
Charge for wildfire-related claims						120,000					120,000
2017/2018 Wildfire/Mudslide Events \| Pending Litigation
Commitments and Contingencies
Charge for wildfire-related claims						934,000					934,000
2017/2018 Wildfire/Mudslide Events \| Aggregate
Commitments and Contingencies
Payments											7,600
Post-2018 Wildfires
Commitments and Contingencies
Increase in accrued estimated losses											572	7
Expected revenue from FERC customers											162
Total pre-tax charge											20	7
Total after-tax charge											14	5
Payments											13
Charge for wildfire-related claims						682					682	123
SCE
Commitments and Contingencies
Regulatory Assets						10,678					10,678	9,438
SCE \| 2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Regulatory Assets						142					142
SCE \| 2017/2018 Wildfire/Mudslide Events \| SED Settlement
Commitments and Contingencies
Payments											$ 1,700
Third-party uninsured claims cost recovery waiver	$ 375
Fine to State	110
Shareholder-funded safety measures costs	65
SCE \| 2017/2018 Wildfire/Mudslide Events \| Local Public Entity Settlements
Commitments and Contingencies
Payments										$ 360
SCE \| 2017/2018 Wildfire/Mudslide Events \| TKM Subrogation Settlement
Commitments and Contingencies
Payments					$ 1,200
Payment agreement for each dollar of claim \| $ / claim					0.555
SCE \| 2017/2018 Wildfire/Mudslide Events \| Individual Plaintiff Settlements
Commitments and Contingencies
Payments						280	$ 350	$ 400	$ 700			1,700	$ 300
Number of plaintiffs \| plaintiff											9,500
SCE \| 2017/2018 Wildfire/Mudslide Events \| Settled Litigation \| SED Settlement
Commitments and Contingencies
Charge for wildfire-related claims	$ 550
SCE \| 2017/2018 Wildfire/Mudslide Events \| Aggregate
Commitments and Contingencies
Increase in accrued estimated losses											$ 8,800
SCE \| November 2018 Wildfires \| Woolsey Subrogation Settlement
Commitments and Contingencies
Payments		$ 2,200	$ 2,200
Payment agreement for each dollar of claim \| $ / claim				0.67
SCE \| 2017/2018 Wildfire/Mudslide Events, Excluding Certain Litigation \| Individual Plaintiff Settlements
Commitments and Contingencies
Payments								$ 400
SCE \| Post-2018 Wildfires
Commitments and Contingencies
Increase in accrued estimated losses											572	7
Expected revenue from FERC customers											162
Total pre-tax charge											11	7
Total after-tax charge											8	$ 5
Payments											13
Charge for wildfire-related claims						682					682
Expected insurance recoveries						473					473
SCE \| Post-2018 Wildfires \| Wildfire expense memorandum account
Commitments and Contingencies
Expected revenue from FERC customers											(152)
SCE \| Post-2018 Wildfires \| FERC balancing accounts
Commitments and Contingencies
Expected revenue from FERC customers											(14)
SCE \| Post-2018 Wildfires \| Aggregate
Commitments and Contingencies
Expected revenue from FERC customers											166
Total after-tax charge											41
Charge for wildfire-related claims						696					696
Expected insurance recoveries						$ 473					$ 473

Commitments and Contingencies_7

Commitments and Contingencies (Wildfire loss accrual) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Loss contingency accrual roll forward
Wildfire-related claims, current	$ 121	$ 131
Wildfire-related claims, non-current	1,687	1,733
2017/2018 Wildfire/Mudslide Events
Loss contingency accrual roll forward
Beginning balance	1,734
Increase in accrued estimated losses	1,296	1,265
Amounts paid	(1,911)
Ending balance	1,119	1,734
Wildfire-related claims, current	65
Wildfire-related claims, non-current	934	1,603
2017/2018 Wildfire/Mudslide Events \| SED Settlement
Loss contingency accrual roll forward
Wildfire-related claims, current	56
Wildfire-related claims, non-current	64
Other Wildfire Related Claims
Loss contingency accrual roll forward
Wildfire-related claims, non-current	689	130
Post-2018 Wildfires
Loss contingency accrual roll forward
Beginning balance	123
Increase in accrued estimated losses	572	7
Amounts paid	(13)
Ending balance	682	123
SCE
Loss contingency accrual roll forward
Wildfire-related claims, current	121	131
Wildfire-related claims, non-current	1,687	1,733
SCE \| 2017/2018 Wildfire/Mudslide Events \| SED Settlement
Loss contingency accrual roll forward
Amounts paid	(1,700)
SCE \| Post-2018 Wildfires
Loss contingency accrual roll forward
Increase in accrued estimated losses	572	$ 7
Amounts paid	(13)
Ending balance	$ 682

Commitments and Contingencies_8

Commitments and Contingencies (Wildfire loss expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Charge for wildfire-related claims	$ 1,296	$ 1,265
Expected revenue from CPUC and FERC customers	(76)	(67)
Total pre-tax charge	1,220	1,198
Income tax benefit	(341)	(304)
Total after-tax charge	879	894
Post-2018 Wildfires
Commitments and Contingencies
Charge for wildfire-related claims	572	7
Expected insurance recoveries	(390)
Expected revenue from CPUC and FERC customers	(162)
Total pre-tax charge	20	7
Income tax benefit	(6)	(2)
Total after-tax charge	14	5
SCE \| Post-2018 Wildfires
Commitments and Contingencies
Charge for wildfire-related claims	572	7
Expected insurance recoveries	(399)
Expected revenue from CPUC and FERC customers	(162)
Total pre-tax charge	11	7
Income tax benefit	(3)	(2)
Total after-tax charge	8	$ 5
SCE \| Post-2018 Wildfires \| Wildfire expense memorandum account
Commitments and Contingencies
Expected revenue from CPUC and FERC customers	152
SCE \| Post-2018 Wildfires \| FERC balancing accounts
Commitments and Contingencies
Expected revenue from CPUC and FERC customers	$ 14

Commitments and Contingencies_9

Commitments and Contingencies (Wildfire Insurance) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Aug. 31, 2021	Sep. 30, 2022	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021	Jul. 31, 2019
Edison Insurance Services-EIS
Commitments and Contingencies
Wildfire insurance expense		$ 9
SCE
Commitments and Contingencies
Wildfire insurance coverage			$ 1,000		$ 1,000
Self insurance			100		100
Coverage net			937
Co-insurance					63
Potential impairment				$ 177		$ 186
Regulatory assets				10,678		9,438
Wildfire insurance expense			450		437
SCE \| Commercial insurance carriers
Commitments and Contingencies
Coverage net			835		875
Wildfire insurance expense			357		413
SCE \| Edison Insurance Services-EIS
Commitments and Contingencies
Coverage net			$ 102		$ 28
2017/2018 Wildfire/Mudslide Events
Commitments and Contingencies
Increase in accrued estimated losses				1,296		$ 1,265
2017/2018 Wildfire/Mudslide Events \| SCE
Commitments and Contingencies
Wildfire insurance coverage				1,000
Self insurance				10
Restoration capital expenditures							$ 60
Denied rate increase	$ 8
Potential impairment				177
Expected FERC cumulative recoveries				376
Regulatory assets				142
2017/2018 Wildfire/Mudslide Events \| SCE \| Aggregate
Commitments and Contingencies
Increase in accrued estimated losses				8,800
Litigation settlement				7,800
Insurance recoveries				2,000
2017/2018 Wildfire/Mudslide Events \| SCE \| SED Settlement \| Aggregate
Commitments and Contingencies
Litigation settlement				120
November 2018 Wildfires \| SCE
Commitments and Contingencies
Wildfire insurance coverage				1,000
Self insurance				$ 10
Thomas and Rye wildfires \| SCE
Commitments and Contingencies
Denied rate increase	$ 6

Commitments and Contingencie_10

Commitments and Contingencies (Environmental Remediation) (Details) - SCE $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) site	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Jointly Owned Utility Plant Interests [Line Items]
Recorded estimated minimum liability	$ 259
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent
Environmental remediation regulatory assets	$ 241
Expected recovery from incentive mechanism	$ 37
Expected recovery from incentive mechanism (percent)	90%
Recovery through customer rates	$ 204
Recovery through customer rates (percent)	100%
Environmental remediation expense	$ 7	$ 9	$ 7
Clean up (period)	40 years
Expected remediation costs, low end of range	$ 9
Expected remediation costs, high end of range	$ 28
Material sites
Jointly Owned Utility Plant Interests [Line Items]
Identified remediation sites (number) \| site	26
Minimum estimated liability	$ 1
Recorded estimated minimum liability	256
Cost may exceed liability	121
Material sites \| San Onofre
Jointly Owned Utility Plant Interests [Line Items]
Recorded estimated minimum liability	$ 164
Immaterial sites
Jointly Owned Utility Plant Interests [Line Items]
Identified remediation sites (number) \| site	15
Recorded estimated minimum liability	$ 3
Cost may exceed liability	$ 9

Commitments and Contingencie_11

Commitments and Contingencies (Nuclear) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2021
Palo Verde (nuclear)
Commitments and Contingencies
Federal loss limit, bodily injury and property damage from nuclear incident	$ 13,700
San Onofre
Commitments and Contingencies
Federal loss limit, bodily injury and property damage from nuclear incident	560
SCE
Commitments and Contingencies
Limit on retroactive premium adjustments assessment, per year	30
SCE \| Palo Verde (nuclear)
Commitments and Contingencies
Minimum federal requirement of nuclear property insurance	1,100
Maximum per incident	65
Maximum per incident annual	10
Maximum per incident, prior events	255
Maximum per incident, prior events, annually	38
SCE \| San Onofre
Commitments and Contingencies
Minimum federal requirement of nuclear property insurance	$ 50
SCE and other owners of San Onofre and Palo Verde
Commitments and Contingencies
Maximum private primary insurance		$ 450

Leases (Life) (Details)

Leases (Life) (Details) - SCE	Dec. 31, 2022
Power Purchase Agreement \| Minimum
Lessee, Lease, Description [Line Items]
Operating lease term	2 years
Power Purchase Agreement \| Maximum
Lessee, Lease, Description [Line Items]
Operating lease term	20 years
Office Leases \| Minimum
Lessee, Lease, Description [Line Items]
Operating lease term	3 years
Office Leases \| Maximum
Lessee, Lease, Description [Line Items]
Operating lease term	72 years
Other operating leases \| Minimum
Lessee, Lease, Description [Line Items]
Operating lease term	5 years
Other operating leases \| Maximum
Lessee, Lease, Description [Line Items]
Operating lease term	13 years

Leases (Lease Payments) (Detail

Leases (Lease Payments) (Details) - SCE $ in Millions	Dec. 31, 2022 USD ($)
PPA Operating Leases
Operating Leases
2023	$ 493
2024	82
2025	73
2025	70
2026	65
Thereafter	633
Total lease payments	1,416
Amount representing interest3	227
Lease liabilities	1,189
Other operating leases
Operating Leases
2023	49
2024	42
2025	38
2025	35
2026	31
Thereafter	117
Total lease payments	312
Amount representing interest3	68
Lease liabilities	$ 244

Leases (Lease Expense) (Details

Leases (Lease Expense) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Total lease cost	$ 3,293	$ 2,989	$ 2,076
PPA Operating Leases
Lessee, Lease, Description [Line Items]
Operating lease cost	580	305	111
Variable lease cost	2,661	2,098	1,918
Short term lease cost		539
Total lease cost	3,241	2,942	2,029
Other operating leases
Lessee, Lease, Description [Line Items]
Total lease cost	$ 52	$ 47	$ 47

Leases (Other Information) (Det

Leases (Other Information) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
PPA Operating Leases
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 580	$ 305	$ 111
Operating ROU assets obtained in exchange for lease obligations	$ 20	$ 1,084	$ 463
Weighted average remaining operating lease term (in years)	9 years 5 months 1 day	8 years 1 month 28 days	9 years 9 months
Operating leases weighted average discount rate	2.95%	2.43%	3.12%
Other operating leases
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 50	$ 45	$ 44
Operating ROU assets obtained in exchange for lease obligations	$ 76	$ 71	$ 58
Weighted average remaining operating lease term (in years)	10 years 4 months 17 days	11 years 1 month 20 days	12 years 1 month 17 days
Operating leases weighted average discount rate	3.78%	3.34%	3.63%

Leases (Lessor) (Details)

Leases (Lessor) (Details) - SCE - USD ($) $ in Millions	12 Months Ended
Leases (Lessor) (Details) - SCE - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lessor
Lease income	$ 18	$ 16	$ 17
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenues	Revenues	Revenues
2023	$ 13
2024	12
2025	11
2026	6
2027	6
Thereafter	120
Total	$ 168
Minimum
Lessor
Finance lease term	15 years
Maximum
Lessor
Finance lease term	65 years

Equity (Issuances) (Details)

Equity (Issuances) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2022
Class of Stock [Line Items]
Equity contribution		$ 900
Preferred stock
Class of Stock [Line Items]
Proceeds received, net of offering costs		$ 2,000
Liquidation value (in dollars per share)		$ 1,000
Redemption amount (in dollars per share)		1,000
Redemption amount following change in criteria (in dollars per share)		$ 1,020
Preferred stock \| SCE
Class of Stock [Line Items]
Stock issued (in shares)	0	0
Offering expenses	$ 44	$ 44
Series A
Class of Stock [Line Items]
Stock issued (in shares)		1,250,000
Preferred stock, dividend rate, (as a percent)		5.375%
Dividend reset period		5 years
Margin rate for dividend rate reset (as a percent)		4.698%
Series B
Class of Stock [Line Items]
Stock issued (in shares)		750,000
Preferred stock, dividend rate, (as a percent)		5%
Dividend reset period		5 years
Margin rate for dividend rate reset (as a percent)		3.901%
Stock compensation awards
Class of Stock [Line Items]
Stock issued (in shares)	1,253,049	629,092
Proceeds received, net of offering costs	$ 57	$ 25
In lieu of dividend payment
Class of Stock [Line Items]
Stock issued (in shares)	273,642	293,031
Proceeds received, net of offering costs	$ 18	$ 17
401(K)
Class of Stock [Line Items]
Stock issued (in shares)	157,000	522,400
Proceeds received, net of offering costs	$ 10	$ 30
Optional cash investments
Class of Stock [Line Items]
Stock issued (in shares)	109,750	26,475
Proceeds received, net of offering costs	$ 7	$ 2
Employee Stock Purchase Plan
Class of Stock [Line Items]
Stock issued (in shares)	36,912
Proceeds received, net of offering costs	$ 2
At-the-market Program (ATM)
Class of Stock [Line Items]
Stock issued (in shares)	0
Aggregate sale price			$ 500

Equity (Preferred and Preferenc

Equity (Preferred and Preference) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended			24 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022	Feb. 23, 2023	Nov. 30, 2022
Class of Stock [Line Items]
Preferred stock, shares authorized	50,000,000	50,000,000		50,000,000
Redemption of preferred and preference stock			$ 308
Dividends Declared per Share	$ 2.95			$ 2.95	$ 0.7375	$ 2.80
Preferred / preference stock	$ 1,978	$ 1,977		$ 1,978
Edison International's preference stock of utility	1,901	1,901		1,901
SCE
Class of Stock [Line Items]
Redemption of preferred and preference stock			308
Preferred / preference stock	$ 1,945	1,945		$ 1,945
SCE \| Cumulative preferred stock, $100 par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 100			$ 100
Preferred stock, shares authorized	12,000,000			12,000,000
SCE \| Cumulative preferred stock $25 par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 25			$ 25
Preferred stock, shares authorized	24,000,000			24,000,000
SCE \| No par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 0			$ 0
Preferred stock, shares authorized	50,000,000			50,000,000
SCE \| Preferred stock
Class of Stock [Line Items]
Dividends in arrears preferred stock	$ 0
Redemption of preferred and preference stock	$ 0	$ 0	120	$ 0
Redemption loss			$ 9
Stock issued (in shares)	0	0
Preferred / preference stock	$ 1,945	$ 1,945		$ 1,945
Less issuance costs	$ (44)	(44)
SCE \| 4.32% Series
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)			4.32%
Redemption price (in dollars per share)			$ 28.75
SCE \| 4.08% Series
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)			4.08%
Redemption price (in dollars per share)			$ 25.50
SCE \| 4.24% Series
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)			4.24%
Redemption price (in dollars per share)			$ 25.80
SCE \| 4.78% Series
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)			4.78%
Redemption price (in dollars per share)			$ 25.80
SCE \| Series E Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)	4.199%
Redemption price (in dollars per share)	$ 1,000			$ 1,000
Shares Outstanding	350,000			350,000
Dividends Declared per Share	$ 65.110			$ 65.110
Preferred / preference stock	$ 350	350		$ 350
SCE \| 5.10% Series G Preferred Stock
Class of Stock [Line Items]
Redemption of preferred and preference stock			$ 180
Preferred stock, dividend rate, (as a percent)	5.10%
Redemption price (in dollars per share)	$ 2,500			$ 2,500
Redemption loss			$ 6
Shares Outstanding	88,004			88,004
Dividends Declared per Share	$ 127.500			$ 127.500
Preferred / preference stock	$ 220	220		$ 220
SCE \| 5.75% Series H Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)	5.75%
Redemption price (in dollars per share)	$ 2,500			$ 2,500
Shares Outstanding	110,004			110,004
Dividends Declared per Share	$ 143.750			$ 143.750
Preferred / preference stock	$ 275	275		$ 275
SCE \| 5.375% Series J Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)	5.375%
Redemption price (in dollars per share)	$ 2,500			$ 2,500
Shares Outstanding	130,004			130,004
Dividends Declared per Share	$ 134.375			$ 134.375
Preferred / preference stock	$ 325	325		$ 325
SCE \| 5.45% Series K Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)	5.45%
Redemption price (in dollars per share)	$ 2,500			$ 2,500
Shares Outstanding	120,004			120,004
Dividends Declared per Share	$ 136.250			$ 136.250
Preferred / preference stock	$ 300	300		$ 300
SCE \| 5.00% Series L Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate, (as a percent)	5%
Redemption price (in dollars per share)	$ 2,500			$ 2,500
Shares Outstanding	190,004			190,004
Dividends Declared per Share	$ 125			$ 125
Preferred / preference stock	$ 475	$ 475		$ 475

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 17,789	$ 15,949	$ 15,496
Pension and PBOP - net loss:
Other comprehensive income, net of tax	43	15
Ending Balance	17,522	17,789	15,949
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(54)	(69)	(69)
Pension and PBOP - net loss:
Other comprehensive income, net of tax	43	15
Ending Balance	(11)	(54)	(69)
Accumulated Defined Benefit Plans Adjustment
Pension and PBOP - net loss:
Other comprehensive income before reclassifications	35	7
Reclassified from accumulated other comprehensive loss1	8	8
Other comprehensive income, net of tax	43	15
SCE
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	19,835	18,650	17,827
Pension and PBOP - net loss:
Other comprehensive income, net of tax	24	9	(2)
Ending Balance	20,789	19,835	18,650
SCE \| Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(32)	(41)	(39)
Pension and PBOP - net loss:
Other comprehensive income, net of tax	24	9	(2)
Ending Balance	(8)	(32)	$ (41)
SCE \| Accumulated Defined Benefit Plans Adjustment
Pension and PBOP - net loss:
Other comprehensive income before reclassifications	17	4
Reclassified from accumulated other comprehensive loss1	7	5
Other comprehensive income, net of tax	$ 24	$ 9

Other Income (Details)

Other Income (Details) - USD ($) $ in Millions	12 Months Ended
Other Income (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Income And Expense
Total other income and (expenses)	$ 348	$ 237	$ 251
SCE
Other Income And Expense
Equity allowance for funds used during construction	137	118	121
Increase in cash surrender value of life insurance policies and life insurance benefits	42	40	66
Interest income	80	3	20
Net periodic benefit income (costs) - non-service components	136	123	102
Civic, political and related activities and donations	(42)	(39)	(42)
Other	(16)	(12)	(12)
Total other income and (expenses)	337	233	255
Edison International Parent and Other
Other Income And Expense
Interest income	9
Net periodic benefit income (costs) - non-service components	(2)	(2)	(2)
Other	$ 4	$ 6	$ (2)

Supplemental Cash Flows Infor_3

Supplemental Cash Flows Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash payments (receipts):
Interest, net of amounts capitalized	$ 1,001	$ 887	$ 836
Income taxes, net	(49)	(88)	(34)
Common stock
Non-cash financing and investing activities:
Dividends declared but not paid	282	266	251
Preferred stock
Non-cash financing and investing activities:
Dividends declared but not paid	8	11	11
SCE
Cash payments (receipts):
Interest, net of amounts capitalized	864	760	713
Income taxes, net	(49)	(88)	(50)
Non-cash financing and investing activities:
Accrued capital expenditures	652	668	730
SCE \| Common stock
Non-cash financing and investing activities:
Dividends declared but not paid	350	325
SCE \| Preferred stock
Non-cash financing and investing activities:
Dividends declared but not paid	$ 8	$ 11	$ 11

Related-Party Transactions (Det

Related-Party Transactions (Details) - SCE - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021	Dec. 31, 2020
Related party transactions
Wildfire insurance expense	$ 450		$ 437
Wildfire liability insurance \| Edison Insurance Services-EIS
Related party transactions
Wildfire-related insurance premiums		$ 273		$ 185	$ 176
Insurance purchased but not reinsured		93
Prepaid insurance		106		52
Long-term insurance receivables due from affiliate		334
Wildfire insurance expense		$ 213		$ 192	$ 189

Schedule I - Condensed Financ_2

Schedule I - Condensed Financial Information of Parent (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets:
Cash and cash equivalents	$ 914	$ 390
Other current assets	397	249
Total current assets	7,070	5,491
Other long-term assets	1,237	1,485
Total assets	78,041	74,745
Liabilities and equity:
Short-term debt	2,015	2,354
Current portion of long-term debt	2,614	1,077
Other current liabilities	1,601	1,667
Total current liabilities	10,347	8,609
Long-term debt	27,025	24,170
Other long-term liabilities	2,988	3,105
Total equity	17,522	17,789	$ 15,949	$ 15,496
Total liabilities and equity	78,041	74,745
Condensed Statements of Income:
Interest income from affiliates	17,220	14,905	13,578
Operating, interest and other expenses	15,737	13,428	12,361
Operating income	1,483	1,477	1,217
Income before income taxes	662	789	566
Income tax (benefit) expense	(162)	(136)	(305)
Net income	824	925	871
Preferred stock dividend requirement of Edison International	74	60
Less: Preferred and preference stock dividend requirements	105	60
Net income attributable to Edison International common shareholders	612	759	739
Condensed Statements of Comprehensive Income
Net income	824	925	871
Other comprehensive income, net of tax	43	15
Comprehensive income attributable to Edison International	760	834	739
Condensed Statements of Cash Flows:
Net cash provided by operating activities	3,216	11	1,263
Cash flows from financing activities:
Long-term debt issued	5,971	5,412	3,073
Long-term debt repaid	(1,085)	(1,037)	(1,099)
Short-term debt issued	1,000	2,654	2,994
Short-term debt repaid	(1,543)	(2,255)	(1,126)
Common stock issued	13	32	912
Preferred stock issued, net		1,977
Commercial paper borrowing (repayments), net	(317)	(254)	304
Common stock dividends paid	(1,050)	(988)	(928)
Preferred and preference stock dividends paid	(99)	(35)
Net cash provided by financing activities	2,881	5,445	3,727
Net cash used in investing activities	(5,574)	(5,151)	(4,971)
Net increase in cash, cash equivalents and restricted cash	523	305	19
Cash, cash equivalents and restricted cash at beginning of period	394	89	70
Cash, cash equivalents and restricted cash at end of period	917	394	89
Edison International
Assets:
Cash and cash equivalents	4	52
Other current assets	447	403
Total current assets	451	455
Investments in subsidiaries	19,922	18,924
Deferred income taxes	626	697
Other long-term assets	62	68
Total assets	21,061	20,144
Liabilities and equity:
Short-term debt	1,090	0
Current portion of long-term debt	400	700
Other current liabilities	575	583
Total current liabilities	2,065	1,283
Long-term debt	2,981	2,438
Other long-term liabilities	394	535
Total equity	15,621	15,888
Total liabilities and equity	21,061	20,144
Condensed Statements of Income:
Interest income from affiliates	3	0	1
Operating, interest and other expenses	209	176	189
Operating income	(206)	(176)	(188)
Equity in earnings (loss) of subsidiaries	867	956	851
Income before income taxes	661	780	663
Income tax (benefit) expense	(56)	(39)	(76)
Net income	717	819	739
Preferred stock dividend requirement of Edison International	105	60	0
Net income attributable to Edison International common shareholders	612	759	739
Condensed Statements of Comprehensive Income
Net income	717	819	739
Other comprehensive income, net of tax	43	15	0
Comprehensive income attributable to Edison International	760	834	739
Condensed Statements of Cash Flows:
Net cash provided by operating activities	1,133	817	1,171
Cash flows from financing activities:
Long-term debt issued	945	0	400
Long-term debt issuance costs	(6)	0	(3)
Long-term debt repaid	(700)	0	(400)
Short-term debt issued	1,000	0	800
Short-term debt repaid	0	0	(800)
Common stock issued	13	32	912
Preferred stock issued, net	0	1,977	0
Payable due to affiliates	(14)	(13)	135
Commercial paper borrowing (repayments), net	89	(130)	129
Payments for stock-based compensation	(8)	(3)	(3)
Receipts from stock-based compensation	72	31	21
Common stock dividends paid	(1,050)	(988)	(928)
Preferred and preference stock dividends paid	(99)	(35)	0
Net cash provided by financing activities	242	871	263
Capital contributions to affiliate	(1,426)	(1,639)	(1,446)
Dividends from affiliate	3	0	0
Net cash used in investing activities	(1,423)	(1,639)	(1,446)
Net increase in cash, cash equivalents and restricted cash	(48)	49	(12)
Cash, cash equivalents and restricted cash at beginning of period	52	3	15
Cash, cash equivalents and restricted cash at end of period	$ 4	$ 52	$ 3

Schedule I - Condensed Financ_3

Schedule I - Condensed Financial Information of Parent (Notes) (Details) $ / shares in Units, $ in Millions	1 Months Ended		3 Months Ended	12 Months Ended
	Nov. 30, 2022 USD ($)	Apr. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019	Dec. 31, 2018 USD ($)	Sep. 30, 2022 USD ($)	May 31, 2022 USD ($)
Debt and Credit Agreements
Commitment			$ 4,850	$ 4,850
Outstanding borrowings			285	285
Amount available			$ 4,134	$ 4,134
Equity
Equity contribution					$ 900
SCE
Basis of Presentation
Weighted-average equity component authorization (as a percent)				52%			48%	45.20%
Weighted-average common equity component authorization period							37 months	37 months
Wildfire related charge incurred after tax								$ 1,800
Spot rate equity ratio								47.70%
Waiver threshold percent								47.70%
Weighted-average common equity component of total capitalization percent								48.70%
Debt and Credit Agreements
Covenant debt to total capitalization ratio			0.65	0.65
Actual debt to capitalization ratio			0.56	0.56
Related Party Transactions
Long-term receivables due from affiliate			$ 334	$ 334
Multi-year credit facilities \| SCE
Debt and Credit Agreements
Commitment			3,350	3,350
Outstanding borrowings			195	195
Amount available			2,724	2,724
Contingent maximum available borrowing			4,000	$ 4,000
Multi-year credit facilities \| SOFR \| SCE
Debt and Credit Agreements
Basis points				1.08%
0.55% term loan due 2023 \| SCE
Debt and Credit Agreements
Outstanding borrowings			$ 730	$ 730
0.55% term loan due 2023 \| SOFR \| SCE
Debt and Credit Agreements
Basis points				0.55%
Series A
Debt and Credit Agreements
Stock issued (in shares) \| shares					1,250,000
Equity
Stock issued (in shares) \| shares					1,250,000
Preferred stock, dividend rate, (as a percent)					5.375%
Margin rate for dividend rate reset (as a percent)					4.698%
Series B
Debt and Credit Agreements
Stock issued (in shares) \| shares					750,000
Equity
Stock issued (in shares) \| shares					750,000
Preferred stock, dividend rate, (as a percent)					5%
Margin rate for dividend rate reset (as a percent)					3.901%
At-the-market Program (ATM)
Debt and Credit Agreements
Stock issued (in shares) \| shares				0
Equity
Aggregate sale price									$ 500
Stock issued (in shares) \| shares				0
Stock compensation awards
Debt and Credit Agreements
Stock issued (in shares) \| shares				1,253,049	629,092
Equity
Stock issued (in shares) \| shares				1,253,049	629,092
Proceeds received, net of offering costs				$ 57	$ 25
In lieu of dividend payment
Debt and Credit Agreements
Stock issued (in shares) \| shares				273,642	293,031
Equity
Stock issued (in shares) \| shares				273,642	293,031
Proceeds received, net of offering costs				$ 18	$ 17
401(K)
Debt and Credit Agreements
Stock issued (in shares) \| shares				157,000	522,400
Equity
Stock issued (in shares) \| shares				157,000	522,400
Proceeds received, net of offering costs				$ 10	$ 30
Optional cash investments
Debt and Credit Agreements
Stock issued (in shares) \| shares				109,750	26,475
Equity
Stock issued (in shares) \| shares				109,750	26,475
Proceeds received, net of offering costs				$ 7	$ 2
Employee Stock Purchase Plan
Debt and Credit Agreements
Stock issued (in shares) \| shares				36,912
Equity
Stock issued (in shares) \| shares				36,912
Proceeds received, net of offering costs				$ 2
Edison International
Basis of Presentation
Cash dividends received from consolidated subsidiaries				$ 1,300	975	$ 1,300
Debt and Credit Agreements
Covenant debt to total capitalization ratio			0.70	0.70
Actual debt to capitalization ratio			0.64	0.64
Equity
Proceeds received, net of offering costs				$ 2,000
Liquidation value (in dollars per share) \| $ / shares			$ 1,000	$ 1,000
Equity contribution				$ 900
Related Party Transactions
Expenses from services provided by SCE				2	2	2
Interest expense from loans due to affiliates				3	5	$ 4
Current receivables due from affiliates			$ 389	389	361
Current payables due to affiliates			166	166	211
Long-term receivables due from affiliate			8	8	52
Long-term payables due to affiliates			130	130	$ 227
Edison International \| 2.95% Senior notes due 2023
Debt and Credit Agreements
Long-term debt			$ 400	$ 400
Interest rate on debt (as a percent)			2.95%	2.95%
Edison International \| 3.55% Senior note due 2024
Debt and Credit Agreements
Long-term debt			$ 500	$ 500
Interest rate on debt (as a percent)			3.55%	3.55%
Edison International \| 4.95% Senior notes due 2025
Debt and Credit Agreements
Long-term debt			$ 400	$ 400
Interest rate on debt (as a percent)			4.95%	4.95%
Edison International \| 4.70% Senior notes due 2025
Debt and Credit Agreements
Long-term debt			$ 400	$ 400
Interest rate on debt (as a percent)			4.70%	4.70%
Edison International \| 5.75% Senior notes due 2027
Debt and Credit Agreements
Long-term debt			$ 600	$ 600
Interest rate on debt (as a percent)			5.75%	5.75%
Edison International \| 4.125% Senior notes due 2028
Debt and Credit Agreements
Long-term debt			$ 550	$ 550
Interest rate on debt (as a percent)			4.125%	4.125%
Edison International \| 6.95% senior notes due in 2029
Debt and Credit Agreements
Long-term debt			$ 550	$ 550
Interest rate on debt (as a percent)			6.95%	6.95%
Edison International \| Multi-year credit facilities
Debt and Credit Agreements
Commitment			$ 1,500	$ 1,500
Outstanding borrowings			90	90
Amount available			$ 1,410	$ 1,410
Contingent maximum available borrowing										$ 2,000
Edison International \| 0.70% term loan due April 2023
Debt and Credit Agreements
Debt, face amount		$ 600
Edison International \| 0.70% term loan due April 2023 \| SOFR
Debt and Credit Agreements
Basis points		0.70%
Edison International \| 0.95% term loan due in November 2023
Debt and Credit Agreements
Debt, face amount	$ 400
Edison International \| 0.95% term loan due in November 2023 \| SOFR
Debt and Credit Agreements
Basis points	0.95%
Edison International \| Series A
Debt and Credit Agreements
Stock issued (in shares) \| shares				1,250,000
Equity
Stock issued (in shares) \| shares				1,250,000
Preferred stock, dividend rate, (as a percent)				5.375%
Margin rate for dividend rate reset (as a percent)			4.698%	4.698%
Edison International \| Series B
Debt and Credit Agreements
Stock issued (in shares) \| shares				750,000
Equity
Stock issued (in shares) \| shares				750,000
Preferred stock, dividend rate, (as a percent)				5%
Margin rate for dividend rate reset (as a percent)			3.901%	3.901%
Edison International \| At-the-market Program (ATM)
Debt and Credit Agreements
Stock issued (in shares) \| shares			0	0
Equity
Aggregate sale price									$ 500,000
Stock issued (in shares) \| shares			0	0