Consolidated Condensed Statements of Earnings (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2016
Income Statement [Abstract]
Net revenue	$ 13,060	$ 11,892	$ 38,129	$ 35,726
Costs and expenses:
Cost of revenue	10,633	9,720	31,071	29,019
Research and development	289	298	899	891
Selling, general and administrative	1,096	719	3,200	2,758
Restructuring and other charges	46	36	249	156
Acquisition-related charges	40	0	76	0
Amortization of intangible assets	0	2	1	16
Defined benefit plan settlement charges	1	0	4	0
Total costs and expenses	12,105	10,775	35,500	32,840
Earnings from continuing operations	955	1,117	2,629	2,886
Interest and other, net	(56)	(36)	(201)	(135)
Earnings from continuing operations before taxes	899	1,081	2,428	2,751
Provision for taxes	(203)	(238)	(562)	(598)
Net earnings from continuing operations	696	843	1,866	2,153
Net loss from discontinued operations, net of taxes	0	(60)	0	(149)
Net earnings	$ 696	$ 783	$ 1,866	$ 2,004
Basic
Continuing operations (usd per share)	$ 0.41	$ 0.49	$ 1.10	$ 1.24
Discontinued operations (usd per share)	0.00	(0.03)	0.00	(0.08)
Total basic net earnings per share (usd per share)	0.41	0.46	1.10	1.16
Diluted
Continuing operations (usd per share)	0.41	0.49	1.09	1.23
Discontinued operations (usd per share)	0.00	(0.04)	0.00	(0.08)
Total diluted net earnings per share (usd per share)	0.41	0.45	1.09	1.15
Cash dividends declared per share (usd per share)	$ 0.26	$ 0.25	$ 0.53	$ 0.50
Weighted-average shares used to compute net earnings (loss) per share:
Basic (shares)	1,681	1,711	1,694	1,735
Diluted (shares)	1,695	1,725	1,705	1,747