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CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS' EQUITY - USD ($)
$ in Millions
Total
Common stock
Additional Paid In Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Balance (in shares) at Dec. 31, 2020   537,438,394      
Beginning balance at Dec. 31, 2020 $ 14,575 $ 1,344 $ 7,404 $ 5,968 $ (141)
Increase (Decrease) in Stockholders' Equity          
Net income 1,597        
Other comprehensive income 18        
Cash dividends declared per common share (in dollars per share)   $ 1.83      
Dividends declared on common stock (989)     (989)  
Issuances of common stock (in shares)   6,586,875      
Issuances of common stock (value) 403 $ 16 387    
Share-based compensation 8   12 (4)  
Balance (in shares) at Dec. 31, 2021   544,025,269      
Ending balance at Dec. 31, 2021 15,612 $ 1,360 7,803 6,572 (123)
Increase (Decrease) in Stockholders' Equity          
Net income 1,736        
Other comprehensive income 30        
Cash dividends declared per common share (in dollars per share)   $ 1.95      
Dividends declared on common stock (1,066)     (1,066)  
Issuances of common stock (in shares)   5,552,749      
Issuances of common stock (value) 359 $ 14 345    
Share-based compensation $ 4   7 (3)  
Balance (in shares) at Dec. 31, 2022 549,578,018 549,578,018      
Ending balance at Dec. 31, 2022 $ 16,675 $ 1,374 8,155 7,239 (93)
Increase (Decrease) in Stockholders' Equity          
Net income 1,771        
Other comprehensive income (1)       (1)
Cash dividends declared per common share (in dollars per share)   $ 2.08      
Dividends declared on common stock (1,148)     (1,148)  
Issuances of common stock (in shares)   5,363,685      
Issuances of common stock (value) 308 $ 13 295    
Share-based compensation $ 11   15 (4)  
Balance (in shares) at Dec. 31, 2023 554,941,703 554,941,703      
Ending balance at Dec. 31, 2023 $ 17,616 $ 1,387 $ 8,465 $ 7,858 $ (94)