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CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS' EQUITY (UNAUDITED) - 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 673     673  
Other comprehensive income 6       6
Dividends declared on common stock (USD per share)   $ 0.915      
Dividends declared on common stock (492)     (492)  
Issuances of common stock (in shares)   867,533      
Issuances of common stock 30 $ 2 28    
Share-based compensation 0   3 (3)  
Balance (in shares) at Jun. 30, 2021   538,305,927      
Ending balance at Jun. 30, 2021 14,792 $ 1,346 7,435 6,146 (135)
Balance (in shares) at Mar. 31, 2021   538,076,662      
Beginning balance at Mar. 31, 2021 14,700 $ 1,345 7,411 6,082 (138)
Increase (Decrease) in Stockholders' Equity          
Net income 311     311  
Other comprehensive income 3       3
Dividends declared on common stock (USD per share)   $ 0.4575      
Dividends declared on common stock (246)     (246)  
Issuances of common stock (in shares)   229,265      
Issuances of common stock 15 $ 1 14    
Share-based compensation 9   10 (1)  
Balance (in shares) at Jun. 30, 2021   538,305,927      
Ending balance at Jun. 30, 2021 $ 14,792 $ 1,346 7,435 6,146 (135)
Balance (in shares) at Dec. 31, 2021 544,025,269 544,025,269      
Beginning balance at Dec. 31, 2021 $ 15,612 $ 1,360 7,803 6,572 (123)
Increase (Decrease) in Stockholders' Equity          
Net income 708     708  
Other comprehensive income 20       20
Dividends declared on common stock (USD per share)   $ 0.975      
Dividends declared on common stock (531)     (531)  
Issuances of common stock (in shares)   2,782,524      
Issuances of common stock 171 $ 7 164    
Share-based compensation $ (9)   (7) (2)  
Balance (in shares) at Jun. 30, 2022 546,807,793 546,807,793      
Ending balance at Jun. 30, 2022 $ 15,971 $ 1,367 7,960 6,747 (103)
Balance (in shares) at Mar. 31, 2022   544,530,987      
Beginning balance at Mar. 31, 2022 15,732 $ 1,361 7,801 6,686 (116)
Increase (Decrease) in Stockholders' Equity          
Net income 328     328  
Other comprehensive income 13       13
Dividends declared on common stock (USD per share)   $ 0.4875      
Dividends declared on common stock (266)     (266)  
Issuances of common stock (in shares)   2,276,806      
Issuances of common stock 159 $ 6 153    
Share-based compensation $ 5   6 (1)  
Balance (in shares) at Jun. 30, 2022 546,807,793 546,807,793      
Ending balance at Jun. 30, 2022 $ 15,971 $ 1,367 $ 7,960 $ 6,747 $ (103)