Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2024

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents

The cash equivalents were as follows:

	Edison International				SCE
	December 31,
(in millions)	2024		2023		2024		2023
Money market funds	$	101	$	199	$	—	$	78

Schedule of 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,
(in millions)	2024		2023
Edison International:
Cash and cash equivalents	$	193	$	345
Short-term restricted cash1	40		35
Long-term restricted cash2	451		152
Total cash, cash equivalents and restricted cash	$	684	$	532
SCE:
Cash and cash equivalents	$	78	$	214
Short-term restricted cash1	36		33
Long-term restricted cash2	451		151
Total cash, cash equivalents and restricted cash	$	565	$	398

1Includes SCE Recovery Funding LLC's restricted cash for payments of senior secured recovery bonds and is reflected in "Other current assets" on Edison International's and SCE's consolidated balance sheets.

2The SCE amount represents cash collected for customer-funded wildfire self-insurance and is reflected in "Other long-term assets" on Edison International's and SCE's consolidated balance sheets. See Note 12 for further information.

Schedule of 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, 2021	$	293	$	16	$	309
Current period provision for uncollectible accounts1	111		11		122
Write-offs, net of recoveries	(70)		(7)		(77)
Balance at December 31, 2022	$	334	$	20	$	354
Current period provision for uncollectible accounts1	109		6		115
Write-offs, net of recoveries	(96)		(9)		(105)
Balance at December 31, 2023²	$	347	$	17	$	364
Current period provision for uncollectible accounts1	278		12		290
Write-offs, net of recoveries	(253)		(11)		(264)
Balance at December 31, 2024²	$	372	$	18	$	390

1This includes $222 million, $78 million, and $40 million of incremental costs for the years ended December 31, 2024, 2023, and 2022, respectively, which were probable of recovery from customers and recorded as regulatory assets.

2Approximately $43 million and $4 million of allowance for uncollectible accounts are included in "Other long-term assets" on SCE's consolidated balance sheets as of December 31, 2024 and 2023 respectively.

Schedule of Property, Plant and Equipment Useful Lives

Estimated useful lives authorized by the CPUC in the 2021 GRC and weighted average useful lives of SCE's property, plant and equipment, are as follows:

	Estimated Useful Lives	Weighted Average Useful Lives
Generation plant	10 years to 54 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	19 years

Summary of Related Debt and Equity

The following table summarizes SCE's AFUDC related to debt and equity:

	Years ended December 31,
(in millions)	2024		2023		2022
Debt AFUDC1	$	82	$	74	$	53
Equity AFUDC2	187		157		137

1Reflected as a reduction of "Interest expense" on the consolidated statements of income.

2Reflected in "Other income" on the consolidated statements of income.

Schedule of Reconciliation of the Changes in ARO Liability

The following table summarizes the changes in SCE's ARO liability:

	December 31,
(in millions)	2024		2023
Beginning balance	$	2,666	$	2,754
Accretion1	137		144
Revisions	(2)		(3)
Liabilities settled	(221)		(229)
Ending balance	$	2,580	$	2,666

1An 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.

Schedule of 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)	2024		2023		2022		2024		2023		2022
Amortization of deferred financing costs charged to interest expense	$	41	$	39	$	37	$	34	$	32	$	31

Schedule of 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)	2024		2023		2022
Basic earnings per share:
Net income available to common shareholders	$	1,284	$	1,197	$	612
Weighted average common shares outstanding	386		383		381
Basic earnings per share	$	3.33	$	3.12	$	1.61
Diluted earnings per share:
Net income available to common shareholders	$	1,284	$	1,197	$	612
Income impact of assumed conversions	1		1		1
Net income available to common shareholders and assumed conversions	$	1,285	$	1,198	$	613
Weighted average common shares outstanding	386		383		381
Incremental shares from assumed conversions	2		2		2
Adjusted weighted average shares – diluted	388		385		383
Diluted earnings per share	$	3.31	$	3.11	$	1.60