Unaudited Quarterly Consolidated Financial Data (Details) - USD ($) $ / shares in Units, $ 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
Unaudited Quarterly Consolidated Financial Data
Net sales	$ 2,368	$ 2,490	$ 2,442	$ 2,359	$ 2,264	$ 2,265	$ 2,353	$ 2,190	$ 9,659	$ 9,072	$ 7,509
Gross profit	959	1,018	1,016	959	959	992	1,001	891	3,952	3,843	2,991
Net income (loss)	$ 336	$ 329	$ 364	$ 348	$ 256	$ 301	$ 262	$ 253	$ 1,377	$ 1,072	$ 256
Diluted earnings (loss) per share (in dollars per share)	$ 0.28	$ 0.27	$ 0.29	$ 0.28	$ 0.21	$ 0.24	$ 0.21	$ 0.21	$ 1.12	$ 0.87	$ 0.21