Document and Entity Information
Document and Entity Information | Aug. 31, 2020 |
Entity Information [Line Items] | |
Document Type | 8-K |
Document Period End Date | Aug. 31, 2020 |
Entity Registrant Name | SOUTHWESTERN ELECTRIC POWER COMPANY |
Entity File Number | 1-3146 |
Entity Incorporation, State or Country Code | DE |
Entity Tax Identification Number | 72-0323455 |
Entity Address, Address Line One | 1 Riverside Plaza, |
Entity Address, City or Town | Columbus, |
Entity Address, State or Province | OH |
Entity Address, Postal Zip Code | 43215 |
City Area Code | (614) |
Local Phone Number | 716-1000 |
Written Communications | false |
Soliciting Material | false |
Pre-commencement Tender Offer | false |
Pre-commencement Issuer Tender Offer | false |
Entity Emerging Growth Company | false |
Entity Central Index Key | 0000092487 |
Amendment Flag | false |
Current Fiscal Year End Date | --12-31 |