Unaudited Quarterly Consolidated Financial Data (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 28, 2012	Jul. 29, 2012	Apr. 29, 2012	Jan. 29, 2012	Oct. 30, 2011	Jul. 31, 2011	May 01, 2011	Jan. 30, 2011	Oct. 28, 2012	Oct. 30, 2011	Oct. 31, 2010
Unaudited Quarterly Consolidated Financial Data
Net sales	$ 1,646	$ 2,343	$ 2,541	$ 2,189	$ 2,182	$ 2,787	$ 2,862	$ 2,686	$ 8,719	$ 10,517	$ 9,549
Gross margin	586	930	1,011	786	852	1,184	1,189	1,136	3,313	4,360	3,715
Net income (loss)	$ (515)	$ 218	$ 289	$ 117	$ 456	$ 476	$ 489	$ 506	$ 109	$ 1,926	$ 938
Diluted earnings (loss) per share	$ (0.42)	$ 0.17	$ 0.22	$ 0.09	$ 0.34	$ 0.36	$ 0.37	$ 0.38	$ 0.09	$ 1.45	$ 0.70