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Goodwill and Acquired Intangible Assets - Intangible Assets Acquired (Details) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Apr. 30, 2022
Jul. 31, 2021
Acquired Finite-Lived Intangible Assets [Line Items]    
Cost $ 8,532 $ 4,166
Accumulated amortization (1,308) (914)
Acquired intangible assets, net $ 7,224 $ 3,252
Weighted average life in years 13 years 14 years
Customer Lists / User Relationships    
Acquired Finite-Lived Intangible Assets [Line Items]    
Cost $ 6,198 $ 3,038
Accumulated amortization (640) (377)
Acquired intangible assets, net $ 5,558 $ 2,661
Weighted average life in years 14 years 15 years
Purchased Technology    
Acquired Finite-Lived Intangible Assets [Line Items]    
Cost $ 1,612 $ 686
Accumulated amortization (552) (455)
Acquired intangible assets, net $ 1,060 $ 231
Weighted average life in years 8 years 5 years
Trade Names and Logos    
Acquired Finite-Lived Intangible Assets [Line Items]    
Cost $ 680 $ 400
Accumulated amortization (74) (41)
Acquired intangible assets, net $ 606 $ 359
Weighted average life in years 13 years 15 years
Covenants Not to Compete or Sue    
Acquired Finite-Lived Intangible Assets [Line Items]    
Cost $ 42 $ 42
Accumulated amortization (42) (41)
Acquired intangible assets, net $ 0 $ 1
Weighted average life in years 0 years 3 years