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Goodwill and Acquired Intangible Assets - Future Amortization (Details) - USD ($)
$ in Millions
Apr. 30, 2022
Jul. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]    
2022 (excluding the nine months ended April 30, 2022) $ 163  
2023 646  
2024 624  
2025 622  
2026 620  
Thereafter 4,549  
Acquired intangible assets, net $ 7,224 $ 3,252