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Net Income Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Numerator:        
Net income $ 792 $ 659 $ 673  
Denominator:        
Shares outstanding at the beginning of the period (in shares)   57.9 58.0 61.9
Weighted-average number of shares issued:        
Stock purchases (in shares) (0.5) (0.5) (3.0)  
Stock-based compensation (in shares) 0.4 0.3 0.1  
Denominator for basic net income per share (in shares) 57.8 57.8 59.0  
Effect of dilutive securities:        
Share-based compensation (in shares) 0.7 0.8 0.9  
Denominator for diluted net income per share (in shares) 58.5 58.6 59.9  
Net income per share:        
Net income per share - Basic (in dollars per share) $ 13.72 $ 11.40 $ 11.40  
Net income per share - Diluted (in dollars per share) $ 13.55 $ 11.25 $ 11.23