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Stockholders' Equity - Narrative (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended
May 31, 2025
May 22, 2025
Apr. 30, 2025
Apr. 30, 2024
Apr. 30, 2025
Apr. 30, 2024
Aug. 20, 2024
Options Outstanding              
Common stock repurchased (in shares)         3.3    
Total stock repurchased, including amounts not included under repurchase plans         $ 2,000    
Stock repurchase program, remaining authorized repurchase amount     $ 2,800   $ 2,800   $ 3,000
Common stock, dividends, per share, cash paid (in dollars per share)         $ 3.12    
Quarterly cash dividends declared     $ 293 $ 259 $ 891 $ 780  
Cash dividends declared per common share (in dollars per share)     $ 1.04 $ 0.90 $ 3.12 $ 2.70  
Subsequent Event              
Options Outstanding              
Total stock repurchased, including amounts not included under repurchase plans   $ 12          
Cash dividends declared per common share (in dollars per share) $ 1.04