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CONDENSED STATEMENTS OF CONSOLIDATED CHANGES IN EQUITY (Unaudited) - USD ($)
$ in Millions
Total
Common Stock
Additional Paid-in-Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2023   $ 6 $ 8,604 $ 1,092 $ (35)
Beginning balance (in shares) at Dec. 31, 2023   631,000,000      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuances related to benefit and investment plans (in shares)   2,000,000      
Issuances related to benefit and investment plans   $ 0 (24)    
Issuances of Common Stock, net of issuance costs     3    
Net income $ 350     350  
Other comprehensive income (loss) 2       2
Ending balance at Mar. 31, 2024 9,998 $ 6 8,583 1,442 (33)
Ending balance (in shares) at Mar. 31, 2024   633,000,000      
Beginning balance at Dec. 31, 2024 $ 10,666 $ 6 9,105 1,572 (17)
Beginning balance (in shares) at Dec. 31, 2024 651,727,276 652,000,000      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuances related to benefit and investment plans (in shares)   0      
Issuances related to benefit and investment plans   $ 0 (8)    
Issuances of Common Stock, net of issuance costs     0    
Net income $ 297     297  
Other comprehensive income (loss) 0       0
Ending balance at Mar. 31, 2025 $ 10,955 $ 6 $ 9,097 $ 1,869 $ (17)
Ending balance (in shares) at Mar. 31, 2025 652,726,754 652,000,000