Restructuring and Other Charges - Summary of Cost Saving Plan Activities (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period	$ 75	$ 67
Charges	67	117
Cash payments	(98)	(65)
Non-cash and other adjustments	(7)	(7)
Accrued balance, beginning of the period	37	112
Total costs incurred to date as of January 31, 2022	1,228
Reflected in Consolidated Condensed Balance Sheets
Other current liabilities	37
Fiscal 2020 Plan | Severance and EER
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period	75	55
Charges	53	106
Cash payments	(91)	(54)
Non-cash and other adjustments	0	1
Accrued balance, beginning of the period	37	108
Total costs incurred to date as of January 31, 2022	662
Reflected in Consolidated Condensed Balance Sheets
Other current liabilities	37
Fiscal 2020 Plan | Non-labor
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period	0	0
Charges	11	11
Cash payments	(4)	(3)
Non-cash and other adjustments	(7)	(8)
Accrued balance, beginning of the period	0	0
Total costs incurred to date as of January 31, 2022	59
Reflected in Consolidated Condensed Balance Sheets
Other current liabilities	0
Other prior-year plan
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period	0	12
Charges	3	0
Cash payments	(3)	(8)
Non-cash and other adjustments	0	0
Accrued balance, beginning of the period	0	$ 4
Total costs incurred to date as of January 31, 2022	507
Reflected in Consolidated Condensed Balance Sheets
Other current liabilities	$ 0