Consolidated Condensed Statements of Earnings (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Income Statement [Abstract]
Net revenue	$ 12,385	$ 11,588	$ 25,069	$ 23,834
Costs and expenses:
Cost of revenue	10,002	9,338	20,438	19,299
Research and development	314	301	610	593
Selling, general and administrative	1,087	1,002	2,104	2,039
Restructuring and other charges	140	100	203	120
Acquisition-related charges	20	0	36	0
Amortization of intangible assets	1	6	1	14
Defined benefit plan settlement charges	3	0	3	0
Total costs and expenses	11,567	10,747	23,395	22,065
Earnings from continuing operations	818	841	1,674	1,769
Interest and other, net	(64)	(5)	(145)	(99)
Earnings from continuing operations before taxes	754	836	1,529	1,670
Provision for taxes	(195)	(176)	(359)	(360)
Net earnings from continuing operations	559	660	1,170	1,310
Net loss from discontinued operations, net of taxes	0	(31)	0	(89)
Net earnings	$ 559	$ 629	$ 1,170	$ 1,221
Basic
Continuing operations (usd per share)	$ 0.33	$ 0.38	$ 0.69	$ 0.75
Discontinued operations (usd per share)	0.00	(0.01)	0.00	(0.05)
Total basic net earnings per share (usd per share)	0.33	0.37	0.69	0.70
Diluted
Continuing operations (usd per share)	0.33	0.38	0.68	0.75
Discontinued operations (usd per share)	0.00	(0.02)	0.00	(0.06)
Total diluted net earnings per share (usd per share)	0.33	0.36	0.68	0.69
Cash dividends declared per share (usd per share)	$ 0.00	$ 0.00	$ 0.27	$ 0.25
Weighted-average shares used to compute net earnings (loss) per share:
Basic (shares)	1,688	1,720	1,696	1,748
Diluted (shares)	1,709	1,731	1,716	1,758