STATEMENTS OF CHANGES IN COMMON SHAREHOLDER’S EQUITY - PSO - USD ($) $ in Millions	Total	Retained Earnings	[1]	Accumulated Other Comprehensive Income (Loss)	PUBLIC SERVICE COMPANY OF OKLAHOMA	PUBLIC SERVICE COMPANY OF OKLAHOMA Common Stock	PUBLIC SERVICE COMPANY OF OKLAHOMA Paid-in Capital	PUBLIC SERVICE COMPANY OF OKLAHOMA Retained Earnings	PUBLIC SERVICE COMPANY OF OKLAHOMA Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2022					$ 2,419	$ 157	$ 1,043	$ 1,218	$ 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital Contribution from Parent					1		1
Return of Capital to Parent					4		4
Common Stock Dividends	$ (1,752)	$ (1,752)			(52)			(52)
Other Comprehensive Income (Loss)	(139)			$ (139)	(2)				(2)
Net Income					209			209
Ending balance at Dec. 31, 2023					2,571	157	1,040	1,375	(1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital Contribution from Parent					2		2
Common Stock Dividends	(1,898)	(1,898)			(140)			(140)
Other Comprehensive Income (Loss)	52			52	4				4
Net Income					249			249
Ending balance at Dec. 31, 2024	26,944				2,686	157	1,042	1,484	3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital Contribution from Parent					676		676
Common Stock Dividends	(2,008)	$ (2,008)
Other Comprehensive Income (Loss)	39			$ 39	(1)				(1)
Net Income					252			252
Ending balance at Dec. 31, 2025	$ 31,138				$ 3,613	$ 157	$ 1,718	$ 1,736	$ 2

[1] Cash dividends declared per AEP common share were $3.74, $3.57 and $3.37 for the years ended December 31, 2025, 2024 and 2023, respectively.