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STATEMENTS OF CONSOLIDATED CHANGES IN EQUITY - USD ($)
$ in Millions
Total
Series A Preferred Stock
Cumulative Preferred Stock
Cumulative Preferred Stock
Series A Preferred Stock
Common Stock
Additional Paid-in-Capital
Retained Earnings
Retained Earnings
Series A Preferred Stock
Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2021     1,000,000            
Beginning balance at Dec. 31, 2021     $ 790   $ 6 $ 8,529 $ 154   $ (64)
Beginning balance (in shares) at Dec. 31, 2021         629,000,000        
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Redemption of Series A Preferred Stock (in shares)       0          
Redemption of Series A Preferred Stock       $ 0          
Issuances of common stock (in shares)         0        
Issuances of Common Stock, net of issuance costs         $ 0 0      
Issuance related to benefit and investment plans (in shares)         1,000,000        
Issuances related to benefit and investment plans         $ 0 39      
Net income $ 1,057           1,057    
Common Stock dividends declared (see Note 11)             (453)    
Series A Preferred stock dividends declared               $ (49)  
Other comprehensive income (loss) 33               33
Ending balance (in shares) at Dec. 31, 2022   800,000 1,000,000            
Ending balance at Dec. 31, 2022 10,042   $ 790   $ 6 8,568 709   (31)
Ending balance (in shares) at Dec. 31, 2022         630,000,000        
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Redemption of Series A Preferred Stock (in shares)       (1,000,000)          
Redemption of Series A Preferred Stock       $ (790)          
Issuances of common stock (in shares)         0        
Issuances of Common Stock, net of issuance costs         $ 0 0      
Issuance related to benefit and investment plans (in shares)         1,000,000        
Issuances related to benefit and investment plans         $ 0 36      
Net income 917           917    
Common Stock dividends declared (see Note 11)             (492)    
Series A Preferred stock dividends declared               (42)  
Other comprehensive income (loss) (4)               (4)
Ending balance (in shares) at Dec. 31, 2023   0 0            
Ending balance at Dec. 31, 2023 $ 9,667   $ 0   $ 6 8,604 1,092   (35)
Ending balance (in shares) at Dec. 31, 2023 631,225,829       631,000,000        
Increase (Decrease) in Stockholders' Equity [Roll Forward]                  
Redemption of Series A Preferred Stock (in shares)       0          
Redemption of Series A Preferred Stock       $ 0          
Issuances of common stock (in shares)         19,000,000        
Issuances of Common Stock, net of issuance costs         $ 0 494      
Issuance related to benefit and investment plans (in shares)         2,000,000        
Issuances related to benefit and investment plans         $ 0 7      
Net income $ 1,019           1,019    
Common Stock dividends declared (see Note 11)             (539)    
Series A Preferred stock dividends declared               $ 0  
Other comprehensive income (loss) 18               18
Ending balance (in shares) at Dec. 31, 2024   0 0            
Ending balance at Dec. 31, 2024 $ 10,666   $ 0   $ 6 $ 9,105 $ 1,572   $ (17)
Ending balance (in shares) at Dec. 31, 2024 651,727,276       652,000,000