v3.26.3
CONDENSED STATEMENTS OF CHANGES IN COMMON SHAREHOLDER’S EQUITY - PSO - USD ($)
$ in Millions
Total
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, 2024     $ 2,686 $ 157 $ 1,042 $ 1,484 $ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income     28     28  
Other Comprehensive Loss $ 24 $ 24 (1)       (1)
Ending balance at Mar. 31, 2025     2,713 157 1,042 1,512 2
Beginning balance at Dec. 31, 2024     2,686 157 1,042 1,484 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income     221        
Other Comprehensive Loss (25) (25)          
Ending balance at Sep. 30, 2025     3,581 157 1,717 1,705 2
Beginning balance at Mar. 31, 2025     2,713 157 1,042 1,512 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Capital Contribution from Parent     300   300    
Net Income     63     63  
Other Comprehensive Loss (33) (33)          
Ending balance at Jun. 30, 2025     3,076 157 1,342 1,575 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Capital Contribution from Parent     375   375    
Net Income     130     130  
Other Comprehensive Loss (16) (16)          
Ending balance at Sep. 30, 2025     3,581 157 1,717 1,705 2
Beginning balance at Dec. 31, 2025 31,138   3,613 157 1,718 1,736 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income     15     15  
Other Comprehensive Loss (14) (14)          
Ending balance at Mar. 31, 2026     3,628 157 1,718 1,751 2
Beginning balance at Dec. 31, 2025 31,138   3,613 157 1,718 1,736 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income     303        
Other Comprehensive Loss 15 15          
Ending balance at Sep. 30, 2026 32,775   4,029 157 1,831 2,039 2
Beginning balance at Mar. 31, 2026     3,628 157 1,718 1,751 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Capital Contribution from Parent     113   113    
Net Income     54     54  
Other Comprehensive Loss 23 23          
Ending balance at Jun. 30, 2026     3,795 157 1,831 1,805 2
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income     234     234  
Other Comprehensive Loss 6 $ 6          
Ending balance at Sep. 30, 2026 $ 32,775   $ 4,029 $ 157 $ 1,831 $ 2,039 $ 2