Consolidated Condensed Statements of Earnings (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Income Statement [Abstract]
Net revenue	$ 14,036	$ 14,003	$ 28,746	$ 28,520
Costs and expenses:
Cost of revenue	11,307	11,301	23,405	23,236
Research and development	353	356	697	703
Selling, general and administrative	1,339	1,318	2,587	2,547
Restructuring and other charges	69	57	124	88
Acquisition-related charges	11	45	21	87
Amortization of intangible assets	29	20	58	40
Total costs and expenses	13,108	13,097	26,892	26,701
Earnings from operations	928	906	1,854	1,819
Interest and other, net	(45)	(823)	(71)	(831)
Earnings before taxes	883	83	1,783	988
(Provision for) benefit from taxes	(101)	975	(198)	2,008
Net earnings	$ 782	$ 1,058	$ 1,585	$ 2,996
Net earnings per share:
Basic (usd per share)	$ 0.51	$ 0.65	$ 1.03	$ 1.83
Diluted (usd per share)	0.51	0.64	1.02	1.81
Cash dividends declared per share (usd per share)	$ 0	$ 0	$ 0.32	$ 0.28
Weighted-average shares used to compute net earnings per share:
Basic (shares)	1,529	1,630	1,543	1,640
Diluted (shares)	1,536	1,646	1,551	1,658