Industry Segment Operations (Net Sales and Long-lived Assets) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Oct. 25, 2015	Jul. 26, 2015	Apr. 26, 2015	Jan. 25, 2015	Oct. 26, 2014	Jul. 27, 2014	Apr. 27, 2014	Jan. 26, 2014	Oct. 25, 2015	Oct. 26, 2014	Oct. 27, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 2,368	$ 2,490	$ 2,442	$ 2,359	$ 2,264	$ 2,265	$ 2,353	$ 2,190	$ 9,659	$ 9,072	$ 7,509
Long-lived assets:	956				924				956	924
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									1,630	1,966	1,473
Long-lived assets:	705				636				705	636
Taiwan
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									2,600	2,702	2,640
Long-lived assets:	39				34				39	34
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									1,623	1,608	787
Long-lived assets:	46				61				46	61
Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									1,654	965	924
Long-lived assets:	12				12				12	12
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									1,078	817	685
Long-lived assets:	6				5				6	5
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									642	658	680
Long-lived assets:	75				99				75	99
Southeast Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									432	356	320
Long-lived assets:	73				77				73	77
Total outside United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									8,029	7,106	$ 6,036
Long-lived assets:	$ 251				$ 288				$ 251	$ 288