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Borrowings - Schedule of Future Principal Payments for Long-Term Debt (Details) - USD ($)
$ in Millions
Jan. 29, 2022
Jul. 31, 2021
Debt Disclosure [Abstract]    
2022 (remaining six months) $ 500  
2023 500  
2024 1,750  
2025 500  
2026 750  
Thereafter 5,500  
Total $ 9,500 $ 11,500