Consolidated Condensed Statements of Earnings (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Income Statement [Abstract]
Net revenue	$ 14,294	$ 14,603	$ 41,381	$ 43,349
Costs and expenses:
Cost of revenue	11,901	11,698	33,623	35,103
Research and development	359	413	1,097	1,110
Selling, general and administrative	1,156	1,376	3,662	3,963
Restructuring and other charges	59	17	431	141
Acquisition-related charges (credits)	11	(9)	14	12
Amortization of intangible assets	29	29	84	87
Total costs and expenses	13,515	13,524	38,911	40,416
Earnings from operations	779	1,079	2,470	2,933
Interest and other, net	(28)	(831)	(15)	(902)
Earnings before taxes	751	248	2,455	2,031
(Provision for) benefit from taxes	(17)	931	(279)	733
Net earnings	$ 734	$ 1,179	$ 2,176	$ 2,764
Net earnings per share:
Basic (usd per share)	$ 0.52	$ 0.79	$ 1.52	$ 1.81
Diluted (usd per share)	$ 0.52	$ 0.78	$ 1.51	$ 1.80
Weighted-average shares used to compute net earnings per share:
Basic (shares)	1,417	1,499	1,435	1,528
Diluted (shares)	1,423	1,508	1,441	1,537