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Earnings per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Numerator:    
Net income, basic $ 583 $ 990
Net income, diluted $ 583 $ 990
Denominator:    
Basic: Weighted-average common shares outstanding (in shares) 98.5 102.8
Effect of potentially dilutive nonqualified stock options and other share-based awards (in shares) 1.5 1.8
Diluted: Weighted-average common shares outstanding (in shares) 100.0 104.6
Earnings per share:    
Basic (in dollars per share) $ 5.92 $ 9.63
Diluted (in dollars per share) $ 5.83 $ 9.46
Options excluded from earnings per share calculation due to their anti-dilutive effect (in shares) 0.1 0.0