CONDENSED CONSOLIDATED BALANCE SHEETS - SWEPCo (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Restricted Cash	$ 35.2	$ 43.1
Materials and Supplies	961.9	966.2
Other Property, Plant and Equipment	7,502.7	7,491.6
Accumulated Depreciation and Amortization	26,612.2	26,186.4
Securitized Assets	537.5	554.3
Long-term Debt Due Within One Year	4,178.9	3,335.0
Long-term Debt	$ 38,810.9	$ 39,307.8
Common Stock – Par Value (in dollars per share)	$ 6.50	$ 6.50
Common Stock – Shares Authorized (in shares)	600,000,000	600,000,000
Subsidiaries
Restricted Cash	$ 35.2	$ 43.1
Long-term Debt Due Within One Year	140.0	216.5
Long-term Debt	830.3	826.5
SWEPCo
Restricted Cash	11.2	3.4
Materials and Supplies	80.8	81.4
Other Property, Plant and Equipment	930.9	940.4
Accumulated Depreciation and Amortization	3,347.9	3,280.0
Securitized Assets	327.3	331.4
Long-term Debt Due Within One Year	519.3	22.7
Long-term Debt	$ 3,462.1	$ 3,958.1
Common Stock – Par Value (in dollars per share)	$ 18	$ 18
Common Stock – Shares Authorized (in shares)	3,680	3,680
Common Stock – Shares Outstanding (in shares)	3,680	3,680
SWEPCo | Subsidiaries
Restricted Cash	$ 11.2	$ 3.4
Securitized Assets	327.3	331.4
Long-term Debt Due Within One Year	19.3	22.7
Long-term Debt	311.7	308.7
SWEPCo | Sabine
Materials and Supplies	2.0	1.5
Other Property, Plant and Equipment	151.6	166.8
Accumulated Depreciation and Amortization	$ 151.6	$ 166.8