CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - SWEPCo - USD ($) $ in Millions	Total	Common Stock	Paid-in Capital	Retained Earnings		Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	SOUTHWESTERN ELECTRIC POWER COMPANY	SOUTHWESTERN ELECTRIC POWER COMPANY Common Stock	SOUTHWESTERN ELECTRIC POWER COMPANY Paid-in Capital	SOUTHWESTERN ELECTRIC POWER COMPANY Retained Earnings	SOUTHWESTERN ELECTRIC POWER COMPANY Accumulated Other Comprehensive Income (Loss)	SOUTHWESTERN ELECTRIC POWER COMPANY Noncontrolling Interests
Beginning balance at Dec. 31, 2021	$ 22,680.2	$ 3,408.7	$ 7,172.6	$ 11,667.1		$ 184.8	$ 247.0	$ 3,149.8	$ 0.1	$ 1,092.2	$ 2,050.9	$ 6.7	$ (0.1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital Contribution from Parent								350.0		350.0
Common Stock Dividends	(1,645.2)			(1,628.7)	[1]		(16.5)	(105.0)			(105.0)
Common Stock Dividends – Nonaffiliated								(3.4)					(3.4)
Net Income (Loss)	2,305.6			2,307.2			(1.6)	294.3			290.1
Other Comprehensive Income (Loss)	(101.1)					(101.1)		(10.9)				(10.9)	4.2
Ending balance at Dec. 31, 2022	24,122.4	3,413.1	8,051.0	12,345.6		83.7	229.0	3,674.8	0.1	1,442.2	2,236.0	(4.2)	0.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital Contribution from Parent								50.0		50.0
Common Stock Dividends	(1,760.4)			(1,752.3)	[1]		(8.1)	(175.0)			(175.0)
Common Stock Dividends – Nonaffiliated								(4.0)					(4.0)
Net Income (Loss)	2,212.6			2,208.1			4.5	223.8			220.3		3.5
Other Comprehensive Income (Loss)	(139.2)					(139.2)		0.8				0.8
Ending balance at Dec. 31, 2023	25,285.9	3,427.9	9,073.9	12,800.4		(55.5)	39.2	3,770.4	0.1	1,492.2	2,281.3	(3.4)	0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital Contribution from Parent								58.6		58.6
Return of Capital to Parent								(1.1)		(1.1)
Common Stock Dividends	(1,903.9)			(1,898.3)	[1]		(5.6)	(250.0)			(250.0)
Common Stock Dividends – Nonaffiliated								(4.3)					(4.3)
Net Income (Loss)	2,975.8			2,967.1			8.7	325.7			321.2		4.5
Other Comprehensive Income (Loss)	52.4					52.4		5.7				5.7
Ending balance at Dec. 31, 2024	$ 26,986.1	$ 3,471.6	$ 9,606.1	$ 13,869.2		$ (3.1)	$ 42.3	$ 3,905.0	$ 0.1	$ 1,549.7	$ 2,352.5	$ 2.3	$ 0.4

[1] Cash dividends declared per AEP common share were $3.57, $3.37 and $3.17 for the years ended December 31, 2024, 2023 and 2022, respectively.