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Acquired Intangible Assets - Future Amortization (Details) - USD ($)
$ in Millions
Oct. 31, 2021
Jul. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]    
2022 (excluding the three months ended October 31, 2021) $ 208  
2023 268  
2024 252  
2025 248  
2026 247  
Thereafter 1,972  
Acquired intangible assets, net $ 3,195 $ 3,252