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Summary of Significant Accounting Policies - Litigation Proceeds (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 12, 2021
Oct. 31, 2022
Oct. 31, 2021
Oct. 31, 2020
Litigation and Contingencies        
Gain on litigation proceeds   $ 0 $ 2,304 $ 0
Tax impact   $ 51   $ 124
Hewlett-Packard Company v. Oracle Corporation        
Litigation and Contingencies        
Tax impact     533  
Hewlett-Packard Company v. Oracle Corporation | Resolved        
Litigation and Contingencies        
Damages awarded $ 4,650      
Gain on litigation proceeds     2,300  
Tax impact     $ 500