Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Parenthetical) (Detail)	Oct. 26, 2012	Oct. 28, 2011
6.0 % Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	6.00%	6.00%
6.625 % Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	6.625%	6.625%
5.125 % Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	5.125%	5.125%