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Financial Instruments - Schedule of Gross Unrealized Losses and Fair Values of Available-for-Sale Securities, Aggregated by Investment Category (Details) - USD ($)
$ in Millions
Jan. 23, 2026
Apr. 25, 2025
Fair Value    
Less than 12 months $ 749 $ 814
More than 12 months 1,895 2,993
Unrealized Losses    
Less than 12 months (7) (9)
More than 12 months (47) (91)
Corporate debt securities    
Fair Value    
Less than 12 months 577 702
More than 12 months 835 1,235
Unrealized Losses    
Less than 12 months (4) (7)
More than 12 months (9) (29)
U.S. government and agency securities    
Fair Value    
Less than 12 months 158 110
More than 12 months 530 641
Unrealized Losses    
Less than 12 months (3) (1)
More than 12 months (12) (25)
Mortgage-backed securities    
Fair Value    
Less than 12 months 12 2
More than 12 months 266 614
Unrealized Losses    
Less than 12 months (1) (1)
More than 12 months (19) (28)
Other asset-backed securities    
Fair Value    
Less than 12 months 0 0
More than 12 months 230 469
Unrealized Losses    
Less than 12 months 0 0
More than 12 months (6) (6)
Auction rate securities    
Fair Value    
Less than 12 months 0 0
More than 12 months 34 33
Unrealized Losses    
Less than 12 months 0 0
More than 12 months $ (2) $ (3)