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Fair Value of Non-marketable Equity Securities - Narrative (Details)
$ in Millions
3 Months Ended
Apr. 27, 2025
investment
Oct. 26, 2025
USD ($)
Oct. 27, 2024
USD ($)
Fair Value Disclosures [Abstract]      
Number of investments reclassified | investment 1    
Cumulative gross unrealized gains   $ 1,400 $ 374
Cumulative gross losses and impairments   $ (167) $ 74