CONSOLIDATED BALANCE SHEETS - SWEPCo (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Restricted Cash	$ 71	$ 43
Materials and Supplies	1,046	966
Other Property, Plant and Equipment	8,635	7,491
Accumulated Depreciation and Amortization	28,205	26,186
Securitized Assets	933	554
Long-term Debt Due Within One Year	3,194	3,335
Long-term Debt	$ 44,128	$ 39,308
Common Stock – Par Value (in USD per share)	$ 6.50	$ 6.50
Common Stock – Shares Authorized (in shares)	600,000,000	600,000,000
Subsidiaries
Restricted Cash	$ 71	$ 43
Long-term Debt Due Within One Year	207	217
Long-term Debt	1,294	827
SOUTHWESTERN ELECTRIC POWER COMPANY
Restricted Cash	15	3
Materials and Supplies	88	81
Other Property, Plant and Equipment	942	940
Accumulated Depreciation and Amortization	3,478	3,280
Securitized Assets	315	331
Long-term Debt Due Within One Year	$ 917	$ 23
Common Stock – Par Value (in USD per share)	$ 18	$ 18
Common Stock – Shares Authorized (in shares)	3,680	3,680
Common Stock – Shares Outstanding (in shares)	3,680	3,680
SOUTHWESTERN ELECTRIC POWER COMPANY | Subsidiaries
Restricted Cash	$ 15	$ 3
Securitized Assets	315	331
Long-term Debt Due Within One Year	17	23
Long-term Debt	304	309
SOUTHWESTERN ELECTRIC POWER COMPANY | Sabine
Materials and Supplies	1	2
Other Property, Plant and Equipment	125	167
Accumulated Depreciation and Amortization	$ 125	$ 167