0000004904 2022-09-29 2022-09-29 0000004904 aep:SouthwesternElectricPowerCoMember 2022-09-29 2022-09-29 0000004904 us-gaap:CommonStockMember exch:XNAS 2022-09-29 2022-09-29 0000004904 aep:PreferredStock2Member exch:XNAS 2022-09-29 2022-09-29 0000004904 false 8-K 2022-09-29 AMERICAN ELECTRIC POWER COMPANY, INC. NY 1-3525 13-4922640 AEP TRANSMISSION COMPANY, LLC DE 333-217143 46-1125168 1 Riverside Plaza, Columbus, OH 43215 (614) 716-1000 false false false false Common Stock, $6.50 par value AEP NASDAQ 6.125% Corporate Units AEPPZ NASDAQ false