Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Oct. 25, 2020	Oct. 27, 2019	Oct. 28, 2018
Income Statement [Abstract]
Net sales	$ 17,202	$ 14,608	$ 16,705
Cost of products sold	9,510	8,222	9,188
Gross profit	7,692	6,386	7,517
Operating expenses:
Research, development and engineering	2,234	2,054	2,022
Marketing and selling	526	521	521
General and administrative	567	461	483
Total operating expenses	3,327	3,036	3,026
Income from operations	4,365	3,350	4,491
Interest expense	240	237	234
Interest and other income, net	41	156	139
Income before income taxes	4,166	3,269	4,396
Provision for income taxes	547	563	1,358
Net income	$ 3,619	$ 2,706	$ 3,038
Earnings per share:
Basic (in dollars per share)	$ 3.95	$ 2.89	$ 3.00
Diluted (in dollars per share)	$ 3.92	$ 2.86	$ 2.96
Weighted average number of shares:
Basic (in shares)	916	937	1,013
Diluted (in shares)	923	945	1,026