Industry Segment Operations (Net Sales and Long-lived Assets) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Oct. 27, 2019	Jul. 28, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 28, 2018	Jul. 29, 2018	Apr. 29, 2018	Jan. 28, 2018	Oct. 27, 2019	Oct. 28, 2018	Oct. 29, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 3,754	$ 3,562	$ 3,539	$ 3,753	$ 3,759	$ 4,162	$ 4,579	$ 4,205	$ 14,608	$ 16,705	$ 14,698
Long-lived assets	1,706				1,561				1,706	1,561
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									1,871	1,413	1,512
Long-lived assets	1,539				1,414				1,539	1,414
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									4,277	5,047	2,758
Long-lived assets	20				13				20	13
Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									1,929	3,539	4,087
Long-lived assets	24				21				24	21
Taiwan
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									2,965	2,504	3,369
Long-lived assets	56				29				56	29
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									2,198	2,396	1,519
Long-lived assets	16				9				16	9
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									820	1,009	828
Long-lived assets	28				50				28	50
Southeast Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									548	797	625
Long-lived assets	23				25				23	25
Total outside United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									12,737	15,292	$ 13,186
Long-lived assets	$ 167				$ 147				$ 167	$ 147