v3.26.1
Balance Sheet Details - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Oct. 31, 2025
Oct. 31, 2024
Restructuring Cost and Reserve [Line Items]            
Inventory write-down $ 233   $ 282      
Supplier Finance Program, Obligation, Statement of Financial Position [Extensible Enumeration] Accounts payable   Accounts payable      
Supplier finance program, obligation $ 599   $ 599   $ 488 $ 466
Other non-current liabilities 8,947   8,947   8,753  
Trade receivables sold 1,200   2,400   3,700  
Trade received from gross proceeds 1,100   2,300      
Deferred revenue 5,621   5,621   5,358  
Unearned revenue recognized     3,200      
Unsatisfied performance obligations 10,800   10,800      
Total customer deposits 347   347   688  
Customer deposits 313   313   616  
Current portion of capitalized costs 96   96   109  
Non-current portion of capitalized costs 140   140   128  
Amortization of capitalized costs to obtain a contract $ 28 $ 27 $ 56 $ 54    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-05-01            
Restructuring Cost and Reserve [Line Items]            
Unsatisfied performance obligation expected to be recognized over the remainder of the year (as a percent) 37.00%   37.00%      
Expected timing of satisfaction 6 months   6 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) 26.00%   26.00%      
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) 17.00%   17.00%      
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) 10.00%   10.00%      
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) 8.00%   8.00%      
Expected timing of satisfaction        
Other Accrued Liabilities | Transformation Program            
Restructuring Cost and Reserve [Line Items]            
Current restructuring liability reported in Accrued restructuring $ 35   $ 35   42  
Long-Term Other Liabilities | Transformation Program            
Restructuring Cost and Reserve [Line Items]            
Long-term portion of restructuring reserve, recorded in other liabilities 54   54   70  
Notes payable and short-term borrowings            
Restructuring Cost and Reserve [Line Items]            
Deferred revenue 53   53   59  
Employee Severance            
Restructuring Cost and Reserve [Line Items]            
Other accrued liabilities 124   124   204  
Other non-current liabilities $ 23   $ 23   $ 34