XML 37 R12.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Property, Plant and Equipment | 12 Months Ended
--- | ---
Dec. 31, 2024
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | 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) | 2024 |  | 2023
Distribution | $ | 37,093 |  |  | $ | 34,573 |
Transmission | 19,189 |  |  | 18,526 |
Generation | 4,217 |  |  | 3,593 |
General plant and other | 7,046 |  |  | 6,383 |
Accumulated depreciation | (14,207) |  |  | (12,910) |
| 53,338 |  |  | 50,165 |
Construction work in progress | 5,585 |  |  | 5,590 |
Nuclear fuel, at amortized cost | 124 |  |  | 122 |
Total utility property, plant and equipment | $ | 59,047 |  |  | $ | 55,877 |
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 their useful lives, primarily 5 and 7 year lives, commencing upon operational use. Capitalized software costs, included in general plant and other above, was $2.5 billion and $2.1 billion at December 31, 2024 and 2023, respectively, and accumulated amortization was $1.1 billion and $0.9 billion, at December 31, 2024 and 2023, respectively. Amortization expense for capitalized software was $416 million, $358 million, and $344 million in 2024, 2023, and 2022, respectively. At December 31, 2024, amortization expense is estimated to be $428 million, $371 million, $288 million, $186 million, and $72 million for 2025 through 2029, respectively. 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, 2024:
(in millions) | Plant in Service |  | Construction Work in Progress |  | Accumulated Depreciation |  | Nuclear Fuel (at amortized cost) |  | Total |  | Ownership Interest
Transmission systems: |  |  |  |  |  |  |  |  |  |  |
Eldorado | $ | 448 |  |  | $ | 40 |  |  | $ | (71) |  |  | $ | — |  |  | $ | 417 |  |  | 71 | %
Pacific Intertie | 356 |  |  | 8 |  |  | (121) |  |  | — |  |  | 243 |  |  | 50 | %
Generating station: |  |  |  |  |  |  |  |  |  |  |
Palo Verde (nuclear) | 2,249 |  |  | 62 |  |  | (1,694) |  |  | 124 |  |  | 741 |  |  | 16 | %
Total | $ | 3,053 |  |  | $ | 110 |  |  | $ | (1,886) |  |  | $ | 124 |  |  | $ | 1,401 |  |  |
In addition to the jointly owned assets in the table above, SCE has ownership interests in jointly owned power poles with other companies.

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
Name: | us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration