v3.26.3
Cover Page
Sep. 17, 2026
Cover [Abstract]  
Document Type 8-K
Document Period End Date Sep. 17, 2026
Entity File Number 333-298694
Entity Registrant Name FirstEnergy Pennsylvania Electric Company
Entity Incorporation, State or Country Code PA
Entity Tax Identification Number 92-3343862
Entity Address, Address Line One 800 Cabin Hill Drive
Entity Address, City or Town Greensburg
Entity Address, State or Province PA
Entity Address, Postal Zip Code 15601
City Area Code (800)
Local Phone Number 736-3402
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 0002152026
Amendment Flag false