v3.26.1
Balance Sheet Details - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Oct. 31, 2025
Oct. 31, 2024
Restructuring Cost and Reserve [Line Items]            
Inventory write-down $ 158   $ 440      
Supplier Finance Program, Obligation, Statement of Financial Position [Extensible Enumeration] Accounts payable   Accounts payable      
Supplier finance program, obligation $ 791   $ 791   $ 488 $ 466
Other non-current liabilities 9,241   9,241   8,753  
Trade receivables sold 1,400   3,800   3,700  
Deferred revenue 5,561   5,561   5,358  
Unearned revenue recognized     4,800      
Unsatisfied performance obligations 10,900   10,900      
Total customer deposits 405   405   688  
Customer deposits 348   348   616  
Current portion of capitalized costs 101   101   109  
Non-current portion of capitalized costs 153   153   128  
Amortization of capitalized costs to obtain a contract $ 30 $ 88 $ 86 $ 142    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-08-01            
Restructuring Cost and Reserve [Line Items]            
Unsatisfied performance obligation expected to be recognized over the remainder of the year (as a percent) 26.00%   26.00%      
Expected timing of satisfaction 3 months   3 months      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-11-01            
Restructuring Cost and Reserve [Line Items]            
Unsatisfied performance obligation expected to be recognized over the remainder of the year (as a percent) 31.00%   31.00%      
Expected timing of satisfaction 1 year   1 year      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-11-01            
Restructuring Cost and Reserve [Line Items]            
Unsatisfied performance obligation expected to be recognized over the remainder of the year (as a percent) 20.00%   20.00%      
Expected timing of satisfaction 1 year   1 year      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-11-01            
Restructuring Cost and Reserve [Line Items]            
Unsatisfied performance obligation expected to be recognized over the remainder of the year (as a percent) 12.00%   12.00%      
Expected timing of satisfaction 1 year   1 year      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2030-11-01            
Restructuring Cost and Reserve [Line Items]            
Unsatisfied performance obligation expected to be recognized over the remainder of the year (as a percent) 10.00%   10.00%      
Expected timing of satisfaction        
Balance Sheet Location [Axis]: us-gaap:DebtCurrent            
Restructuring Cost and Reserve [Line Items]            
Deferred revenue $ 49   $ 49   59  
Employee Severance            
Restructuring Cost and Reserve [Line Items]            
Other accrued liabilities 92   92   204  
Other non-current liabilities $ 29   $ 29   $ 34