Restructuring and Other Charges - Schedule of Restructuring Activities by Plan (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Apr. 30, 2024	Apr. 30, 2024	Apr. 30, 2023
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period		$ 108	$ 32
Charges	$ 54	102	309
Cash payments		(112)	(135)
Non-cash and other adjustments		(2)	(143)
Accrued balance, end of the period	96	96	63
Total costs incurred to date	1,411	1,411
Reflected in Consolidated Condensed Balance Sheets
Other current liabilities	86	86
Other non-current liabilities	10	10
Fiscal 2023 Plan | Severance and EER
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period		88	0
Charges	50	93	294
Cash payments		(100)	(92)
Non-cash and other adjustments		2	(141)
Accrued balance, end of the period	83	83	61
Total costs incurred to date	495	495
Reflected in Consolidated Condensed Balance Sheets
Other current liabilities	83	83
Other non-current liabilities	0	0
Fiscal 2023 Plan | Non-labor
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period		18	0
Charges	4	6	13
Cash payments		(9)	(8)
Non-cash and other adjustments		(2)	(5)
Accrued balance, end of the period	13	13	0
Total costs incurred to date	47	47
Reflected in Consolidated Condensed Balance Sheets
Other current liabilities	3	3
Other non-current liabilities	10	10
Fiscal 2023 Plan | Special Termination Benefits
Restructuring Reserve [Roll Forward]
Charges			105
Non-cash and other adjustments			139
Other prior-year plans
Restructuring Reserve [Roll Forward]
Accrued balance, beginning of the period		2	32
Charges	0	3	2
Cash payments		(3)	(35)
Non-cash and other adjustments		(2)	3
Accrued balance, end of the period	0	0	$ 2
Total costs incurred to date	869	869
Reflected in Consolidated Condensed Balance Sheets
Other current liabilities	0	0
Other non-current liabilities	$ 0	$ 0