Document Fiscal Period Focus Document Fiscal Period Focus Auditor Firm ID Auditor Firm ID Entity Shell Company Entity Shell Company Appalachian Power Company [Member] Appalachian Power Company [Member] Appalachian Power Company Member Entity Voluntary Filers Entity Voluntary Filers Entity Interactive Data Current Entity Interactive Data Current Entity Information [Line Items] Entity Information [Line Items] Auditor Name Auditor Name Document Period End Date Document Period End Date City Area Code City Area Code Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Central Index Key Entity Central Index Key Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Document Fiscal Year Focus Document Fiscal Year Focus Entity Address, City or Town Entity Address, City or Town Current Fiscal Year End Date Current Fiscal Year End Date Entity Small Business Entity Small Business Local Phone Number Local Phone Number Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Document Annual Report Document Annual Report Document Transition Report Document Transition Report Entity Address, State or Province Entity Address, State or Province Cover [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Entity [Domain] Entity [Domain] Document Type Document Type Amendment Flag Amendment Flag Entity File Number Entity File Number Legal Entity [Axis] Legal Entity [Axis] Entities [Table] Entities [Table] Entity Tax Identification Number Entity Tax Identification Number Entity Public Float Entity Public Float Entity Address, Address Line One Entity Address, Address Line One Auditor Location Auditor Location Entity Registrant Name Entity Registrant Name