Restructuring and Other Charges - Schedule of Restructuring Activities by Plan (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Apr. 30, 2025	Apr. 30, 2025	Apr. 30, 2024
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period		$ 138	$ 108
Charges	$ 105	161	102
Cash payments		(118)	(112)
Non-cash and other adjustments		(15)	(2)
Accrued balance, end of the period	166	166	96
Total costs incurred to date	1,703	1,703
Reflected in the Consolidated Condensed Balance Sheets
Other current liabilities	160	160
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	97	141	93
Cash payments		(110)	(100)
Non-cash and other adjustments		1	2
Accrued balance, end of the period	152	152	83
Total costs incurred to date	748	748
Reflected in the Consolidated Condensed Balance Sheets
Other current liabilities	152	152
Other non-current liabilities	0	0
Fiscal 2023 Plan | Non-labor
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period		11	18
Charges	8	20	6
Cash payments		(6)	(9)
Non-cash and other adjustments		(16)	(2)
Accrued balance, end of the period	9	9	13
Total costs incurred to date	77	77
Reflected in the Consolidated Condensed Balance Sheets
Other current liabilities	3	3
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	3
Cash payments		(2)	(3)
Non-cash and other adjustments		0	(2)
Accrued balance, end of the period	5	5	$ 0
Total costs incurred to date	878	878
Reflected in the Consolidated Condensed Balance Sheets
Other current liabilities	5	5
Other non-current liabilities	$ 0	$ 0