Restructuring and Other Charges - Schedule of Restructuring Activities by Plan (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jul. 31, 2025	Jul. 31, 2025	Jul. 31, 2024
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period		$ 138	$ 108
Charges	$ 91	252	132
Cash payments		(188)	(156)
Non-cash and other adjustments		(21)	(5)
Accrued balance, end of the period	181	181	79
Total costs incurred to date	1,794	1,794
Reflected in the Condensed Consolidated Balance Sheets
Other current liabilities	175	175
Other non-current liabilities	6	6
Fiscal 2023 Plan | Severance and EER
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period		120	88
Charges	77	218	120
Cash payments		(175)	(141)
Non-cash and other adjustments		4	0
Accrued balance, end of the period	167	167	67
Total costs incurred to date	825	825
Reflected in the Condensed Consolidated Balance Sheets
Other current liabilities	167	167
Other non-current liabilities	0	0
Fiscal 2023 Plan | Non-labor
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period		11	18
Charges	14	34	8
Cash payments		(10)	(11)
Non-cash and other adjustments		(25)	(3)
Accrued balance, end of the period	10	10	12
Total costs incurred to date	91	91
Reflected in the Condensed Consolidated Balance Sheets
Other current liabilities	4	4
Other non-current liabilities	6	6
Other prior-year plans
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period		7	2
Charges	0	0	4
Cash payments		(3)	(4)
Non-cash and other adjustments		0	(2)
Accrued balance, end of the period	4	4	$ 0
Total costs incurred to date	878	878
Reflected in the Condensed Consolidated Balance Sheets
Other current liabilities	4	4
Other non-current liabilities	$ 0	$ 0