XML 52 R31.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Property, Plant and Equipment (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Property, Plant and Equipment [Abstract] |
Schedule of Property, Plant, and Equipment | SCE's property, plant and equipment included in the consolidated balance sheets is composed of the following:
| December 31,
(in millions) | 2017 |  | 2016
Distribution | $ | 23,633 |  |  | $ | 22,332 |
Transmission | 13,127 |  |  | 12,549 |
Generation | 3,468 |  |  | 3,376 |
General plant and other | 4,534 |  |  | 4,633 |
Accumulated depreciation | (9,355 | ) |  | (9,000 | )
| 35,407 |  |  | 33,890 |
Construction work in progress | 3,175 |  |  | 2,790 |
Nuclear fuel, at amortized cost | 126 |  |  | 126 |
Total utility property, plant and equipment | $ | 38,708 |  |  | $ | 36,806 |
Schedule of Jointly Owned Utility Projects | The following is SCE's investment in each asset as of December 31, 2017:
(in millions) | Plant in Service | Construction Work in Progress | Accumulated Depreciation | Nuclear Fuel (at amortized cost) | Net Book Value | Ownership Interest
Transmission systems: |  |  |  |  |  |
Eldorado | $ | 237 |  | $ | 14 |  | $ | 24 |  | $ | — |  | $ | 227 |  | 59 | %
Pacific Intertie | 192 |  | 41 |  | 78 |  | — |  | 155 |  | 50 | %
Generating station: |  |  |  |  |  |
Palo Verde (nuclear) | 2,001 |  | 52 |  | 1,557 |  | 126 |  | 622 |  | 16 | %
Total | $ | 2,430 |  | $ | 107 |  | $ | 1,659 |  | $ | 126 |  | $ | 1,004 |  |

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 Tabular disclosure of proportionate interests in jointly owned utility plants. Includes the amount of plants in service, the accumulated provision for depreciation (if available), the amount of plants under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Includes statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. States that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power, then disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 10.C) -URI http://asc.fasb.org/extlink&oid=6500719&loc=d3e659983-123033 + Details
Name: | us-gaap_ScheduleOfJointlyOwnedUtilityPlantsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of public utility physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, deprecation expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84167750&loc=d3e42232-110370 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration