Consolidated Condensed Statements of Earnings (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Income Statement [Abstract]
Net revenue	$ 12,469	$ 14,036	$ 27,087	$ 28,746
Costs and expenses:
Cost of revenue	9,976	11,307	21,722	23,405
Research and development	338	353	738	697
Selling, general and administrative	1,216	1,339	2,506	2,587
Restructuring and other charges	81	69	372	124
Acquisition-related charges	3	11	3	21
Amortization of intangible assets	29	29	55	58
Total costs and expenses	11,643	13,108	25,396	26,892
Earnings from operations	826	928	1,691	1,854
Interest and other, net	0	(45)	13	(71)
Earnings before taxes	826	883	1,704	1,783
Provision for taxes	(62)	(101)	(262)	(198)
Net earnings	$ 764	$ 782	$ 1,442	$ 1,585
Net earnings per share:
Basic (usd per share)	$ 0.53	$ 0.51	$ 1.00	$ 1.03
Diluted (usd per share)	$ 0.53	$ 0.51	$ 0.99	$ 1.02
Weighted-average shares used to compute net earnings per share:
Basic (shares)	1,435	1,529	1,444	1,543
Diluted (shares)	1,440	1,536	1,450	1,551