Schedule of Fair Value of Option Granted using Black-Scholes Pricing Model (Detail) (USD $)	12 Months Ended
	Oct. 25, 2013	Oct. 26, 2012	Oct. 28, 2011
Employee Sharesave Scheme
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]
Volatility	36.97%	38.96%	51.10%
Risk-free interest rate	0.40%	0.38%	0.98%
Expected life (years)	3 years	3 years	3 years
Dividends	$ 0	$ 0	$ 0
Equity Incentive Plan
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]
Dividends	$ 0	$ 0	$ 0
Volatility, minimum	41.89%	41.62%	40.80%
Volatility, maximum	44.25%	44.29%	42.80%
Risk-free interest rate, minimum	0.79%	0.91%	2.02%
Risk-free interest rate, maximum	1.88%	2.11%	3.64%
Equity Incentive Plan | Minimum
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]
Expected life (years)	4 years 6 months	4 years 6 months	4 years 6 months
Equity Incentive Plan | Maximum
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]
Expected life (years)	9 years 6 months	9 years 6 months	9 years 6 months