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Restructuring and Other Charges - Summary of Cost Saving Plan Activities (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Apr. 30, 2023
Apr. 30, 2023
Apr. 30, 2022
Restructuring Reserve [Roll Forward]      
Accrued balance, beginning of the period   $ 32 $ 75
Charges $ 178 309 145
Cash payments   (135) (141)
Non-cash and other adjustments   (143) (32)
Accrued balance, end of the period 63 63 47
Total costs incurred to date 1,174 1,174  
Reflected in Consolidated Condensed Balance Sheets      
Other current liabilities 63 63  
Fiscal 2023 Plan | Severance and EER      
Restructuring Reserve [Roll Forward]      
Accrued balance, beginning of the period   0 0
Charges 172 294 0
Cash payments   (92) 0
Non-cash and other adjustments   (141) 0
Accrued balance, end of the period 61 61 0
Total costs incurred to date 294 294  
Reflected in Consolidated Condensed Balance Sheets      
Other current liabilities 61 61  
Fiscal 2023 Plan | Non-labor      
Restructuring Reserve [Roll Forward]      
Accrued balance, beginning of the period   0 0
Charges 4 13 0
Cash payments   (8) 0
Non-cash and other adjustments   (5) 0
Accrued balance, end of the period 0 0 0
Total costs incurred to date 13 13  
Reflected in Consolidated Condensed Balance Sheets      
Other current liabilities 0 0  
Fiscal 2023 Plan | Special Termination Benefits      
Restructuring Reserve [Roll Forward]      
Charges 105 105  
Non-cash and other adjustments   139  
Other prior-year plans      
Restructuring Reserve [Roll Forward]      
Accrued balance, beginning of the period   32 75
Charges 2 2 145
Cash payments   (35) (141)
Non-cash and other adjustments   3 (32)
Accrued balance, end of the period 2 2 $ 47
Total costs incurred to date 867 867  
Reflected in Consolidated Condensed Balance Sheets      
Other current liabilities $ 2 $ 2