Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Income Statement [Abstract]
Net revenue	$ 56,639	$ 58,756	$ 58,472
Costs and expenses:
Cost of revenue	46,202	47,586	47,803
Research and development	1,478	1,499	1,404
Selling, general and administrative	4,906	5,368	5,099
Restructuring and other charges	462	275	132
Acquisition-related charges	16	35	123
Amortization of intangible assets	113	116	80
Total costs and expenses	53,177	54,879	54,641
Earnings from operations	3,462	3,877	3,831
Interest and other, net	(231)	(1,354)	(818)
Earnings before taxes	3,231	2,523	3,013
(Provision for) benefit from taxes	(387)	629	2,314
Net earnings	$ 2,844	$ 3,152	$ 5,327
Net earnings per share:
Basic (in dollars per share)	$ 2.01	$ 2.08	$ 3.30
Diluted (in dollars per share)	$ 2.00	$ 2.07	$ 3.26
Weighted-average shares used to compute net earnings per share:
Basic (in shares)	1,413	1,515	1,615
Diluted (in shares)	1,420	1,524	1,634