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VOLUNTARY SEVERANCE PROGRAM (Tables)
12 Months Ended
Dec. 31, 2025
Restructuring and Related Activities [Abstract]  
Schedule of Voluntary Severance Program Expenses
AEP recorded a charge to expense in the second quarter of 2024 related to this voluntary severance program.

AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
Severance Expense Incurred$122 $20 $11 $26 $15 $15 $10 $17