v3.26.1
Investments - Available-for-Sale Investments With Gross Unrealized Losses (Details) - USD ($)
$ in Millions
Jul. 25, 2026
Jul. 26, 2025
Schedule of Investments [Line Items]    
Unrealized loss less than 12 months, Fair Value $ 3,491 $ 1,517
Unrealized loss less than 12 months, Gross Unrealized Losses (37) (6)
Unrealized losses 12 months or greater, Fair Value 619 2,402
Unrealized losses 12 months or greater, Gross Unrealized Losses (5) (75)
Total, Fair Value 4,110 3,919
Total, Gross Unrealized Losses (42) (81)
U.S. government securities    
Schedule of Investments [Line Items]    
Unrealized loss less than 12 months, Fair Value 1,449 1,076
Unrealized loss less than 12 months, Gross Unrealized Losses (15) (6)
Unrealized losses 12 months or greater, Fair Value 52 302
Unrealized losses 12 months or greater, Gross Unrealized Losses 0 (6)
Total, Fair Value 1,501 1,378
Total, Gross Unrealized Losses (15) (12)
U.S. government agency securities    
Schedule of Investments [Line Items]    
Unrealized loss less than 12 months, Fair Value 38 8
Unrealized loss less than 12 months, Gross Unrealized Losses 0 0
Unrealized losses 12 months or greater, Fair Value 0 21
Unrealized losses 12 months or greater, Gross Unrealized Losses 0 0
Total, Fair Value 38 29
Total, Gross Unrealized Losses 0 0
Non-U.S. government and agency securities    
Schedule of Investments [Line Items]    
Unrealized loss less than 12 months, Fair Value 227 292
Unrealized loss less than 12 months, Gross Unrealized Losses (1) 0
Unrealized losses 12 months or greater, Fair Value 0 0
Unrealized losses 12 months or greater, Gross Unrealized Losses 0 0
Total, Fair Value 227 292
Total, Gross Unrealized Losses (1) 0
Corporate debt securities    
Schedule of Investments [Line Items]    
Unrealized loss less than 12 months, Fair Value 1,549 106
Unrealized loss less than 12 months, Gross Unrealized Losses (20) 0
Unrealized losses 12 months or greater, Fair Value 547 1,800
Unrealized losses 12 months or greater, Gross Unrealized Losses (2) (35)
Total, Fair Value 2,096 1,906
Total, Gross Unrealized Losses (22) (35)
Mortgage- and asset-backed securities    
Schedule of Investments [Line Items]    
Unrealized loss less than 12 months, Fair Value 129 5
Unrealized loss less than 12 months, Gross Unrealized Losses (1) 0
Unrealized losses 12 months or greater, Fair Value 20 279
Unrealized losses 12 months or greater, Gross Unrealized Losses (3) (34)
Total, Fair Value 149 284
Total, Gross Unrealized Losses (4) (34)
Commercial paper    
Schedule of Investments [Line Items]    
Unrealized loss less than 12 months, Fair Value 99 30
Unrealized loss less than 12 months, Gross Unrealized Losses 0 0
Unrealized losses 12 months or greater, Fair Value 0 0
Unrealized losses 12 months or greater, Gross Unrealized Losses 0 0
Total, Fair Value 99 30
Total, Gross Unrealized Losses $ 0 $ 0