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Capital Stock - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Feb. 22, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 09, 2021
Class of Stock [Line Items]          
Common stock, dividends, per share, declared (in dollars per share)   $ 0.96 $ 0.88 $ 0.80  
Common stock, dividends, per share, paid (in dollars per share)   $ 0.96 $ 0.88 $ 0.80  
Stock repurchase program, authorized amount         $ 3,000
Common stock repurchased   $ 12 $ 722 $ 950  
Preferred stock, shares authorized (in shares)   30,000,000 30,000,000    
Subsequent Event          
Class of Stock [Line Items]          
Common stock, dividends, per share, declared (in dollars per share) $ 0.25