Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Cash flows from operating activities:
Net earnings	$ 2,844	$ 3,152	$ 5,327
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	789	744	528
Stock-based compensation expense	278	297	268
Restructuring and other charges	462	275	132
Deferred taxes on earnings	70	133	(3,653)
Defined benefit plan settlement charges	214	0	0
Other, net	325	254	319
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	575	(761)	(491)
Inventory	(386)	(68)	(136)
Accounts payable	(35)	(53)	1,429
Net investment in leases	(152)
Taxes on earnings	(147)	(851)	389
Restructuring and other	(489)	(154)	(237)
Other assets and liabilities	(32)	1,686	653
Net cash provided by operating activities	4,316	4,654	4,528
Cash flows from investing activities:
Investment in property, plant and equipment	(580)	(671)	(546)
Proceeds from sale of property, plant and equipment	3	0	172
Purchases of available-for-sale securities and other investments	(693)	(80)	(367)
Maturities and sales of available-for-sale securities and other investments	417	771	847
Collateral posted for derivative instruments	(163)	(32)	(1,165)
Collateral returned for derivative instruments	0	32	1,379
Payments made in connection with business acquisitions, net of cash acquired	0	(458)	(1,036)
Net cash used in investing activities	(1,016)	(438)	(716)
Cash flows from financing activities:
(Payments of) Proceeds from short-term borrowings with original maturities less than 90 days, net	0	(856)	743
Proceeds from short-term borrowings with original maturities greater than 90 days	27	0	712
Proceeds from debt, net of issuance costs	3,081	127	0
Payment of short-term borrowings with original maturities greater than 90 days	0	0	(1,596)
Payment of debt	(1,849)	(680)	(2,098)
Stock-based award activities and others	(128)	(61)	52
Repurchase of common stock	(3,107)	(2,405)	(2,557)
Cash dividends paid	(997)	(970)	(899)
Net cash used in financing activities	(2,973)	(4,845)	(5,643)
Increase (decrease) in cash and cash equivalents	327	(629)	(1,831)
Cash and cash equivalents at beginning of period	4,537	5,166	6,997
Cash and cash equivalents at end of period	4,864	4,537	5,166
Supplemental Cash Flow Information [Abstract]
Income taxes paid, net of refunds	464	89	951
Interest expense paid	227	240	329
Supplemental schedule of non-cash activities:
Purchase of assets under finance leases	$ 19	$ 366	$ 258