Employee Stock Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	11 Months Ended		12 Months Ended
	Oct. 02, 2015	Sep. 26, 2014	Oct. 31, 2014	Oct. 25, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation	$ 10,771	$ 11,709	$ 13,044	$ 9,575
Income tax benefit recognized	$ 2,700		$ 3,000	$ 3,000
Number of options granted	203,200		207,200	257,000
Number of options exercised	182,322		618,645	518,537
Weighted average exercise price of options exercised	$ 50.94		$ 45.16	$ 37.89
Aggregate intrinsic value of option shares outstanding	$ 17,000
Aggregate intrinsic value of option shares exercisable	$ 14,700
Number of option shares vested or expected to vest	1,300,000
Option shares vested or expected to vest aggregate intrinsic value	$ 16,700
Weighted average exercise price of option shares vested or expected to vest	$ 67.24
Weighted average remaining contractual term of option shares vested or expected to vest, years	5 years 10 months 24 days
Weighted average remaining contractual term of option shares currently exercisable	4 years 8 months 12 days
Total unrecognized compensation expense for options	$ 8,500
Unrecognized compensation expense will be recognized over a weighted average period, years	1 year 10 months 24 days
Fair value of option shares vested	$ 2,300
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unrecognized compensation expense for options	$ 4,000
Unrecognized compensation expense will be recognized over a weighted average period, years	1 year 8 months 12 days
Granted	28,150		77,975
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase price fair market value percentage	95.00%
Number of shares purchased by employees	20,545
Employees purchase price per share fair market value	$ 96.67
Employee Share-save Scheme
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance, shares	83,728
Remaining shares available for issuance	549,808
Accrued deductions for purchase of shares	$ 500
Share purchase date	Dec. 15, 2015
Discount rate of market value on purchase date	95.00%
The term of options, years	3 years
Number of options granted	25,984		29,242	16,722
Weighted-average grant date fair value of options granted	$ 24.31
Number of options exercised	32,761
Weighted average exercise price of options exercised	$ 65.78
Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Remaining shares available for issuance	1,214,523
Weighted-average grant date fair value of options granted	$ 47.85		$ 45.87
Shares reserved for issuance to officers and key employees	1,481,202
Award period	10 years
Award period end date	Mar. 05, 2023
Options vesting period	4 years