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Statement of Changes in Stockholders' Equity (Unaudited) - USD ($)
$ in Millions
Total
Common Stock
Additional Paid-in Capital
Retained Earnings
Common Stock Held in Treasury
Accumulated Other Comprehensive Income (Loss)
Non-controlling Interest
Beginning balance at Dec. 31, 2019 $ 3,030 $ 6 $ 1,304 $ 22,403 $ (18,982) $ (1,705) $ 4
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 566     566      
Common stock issued for stock-based compensation 5   (3)   8    
Stock-based compensation expense 9   9        
Repurchases of common stock (706)       (706)    
Dividends declared (338)     (338)      
Other comprehensive income (loss) (278)         (278)  
Noncontrolling interest (4)   (1)       (3)
Ending balance at Mar. 31, 2020 2,284 6 1,309 22,631 (19,680) (1,983) 1
Beginning balance at Dec. 31, 2020 3,182 6 1,362 23,114 (19,659) (1,642) 1
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 671     671      
Common stock issued for stock-based compensation 17   5   12    
Stock-based compensation expense 11   11        
Repurchases of common stock (250)       (250)    
Dividends declared (360)     (360)      
Other comprehensive income (loss) 4         4  
Noncontrolling interest 1           1
Ending balance at Mar. 31, 2021 $ 3,276 $ 6 $ 1,378 $ 23,425 $ (19,897) $ (1,638) $ 2