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Goodwill and Purchased Intangible Assets - Schedule of Estimated Future Amortization Expense of Purchased Intangible Assets (Details)
$ in Millions
Oct. 24, 2020
USD ($)
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]  
2021 (remaining nine months) $ 487
2022 431
2023 286
2024 170
2025 15
Thereafter $ 6