Net Income (Loss) Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 26, 2012	Jul. 27, 2012	Apr. 27, 2012	Jan. 27, 2012	Oct. 28, 2011	Jul. 29, 2011	Apr. 29, 2011	Jan. 28, 2011	Oct. 26, 2012	Oct. 28, 2011	Oct. 29, 2010
Net Income (Loss) Per Common Share [Abstract]
Net income (loss)	$ 73,769	$ 86,406	$ 76,540	$ 55,782	$ (295,723)	$ 67,387	$ 56,308	$ 33,427	$ 292,497	$ (138,601)	$ 222,056
Weighted-average common shares outstanding - basic									91,415,055	94,309,679	98,521,088
Net Income (Loss) per Share - Basic	$ 0.82	$ 0.95	$ 0.83	$ 0.60	$ (3.18)	$ 0.72	$ 0.60	$ 0.35	$ 3.20	$ (1.47)	$ 2.25
Dilutive effect of stock options and unvested restricted stock									2,965,421	0	2,345,119
Equivalent average common shares outstanding - diluted									94,380,476	94,309,679	100,866,207
Net Income (Loss) per Share - Diluted	$ 0.79	$ 0.92	$ 0.80	$ 0.58	$ (3.18)	$ 0.70	$ 0.58	$ 0.34	$ 3.10	$ (1.47)	$ 2.20
Antidilutive securities excluded from computation of EPS									67,411	3,057,297	1,065,425