Borrowings - Additional Information (Detail)		2 Months Ended	12 Months Ended
	Aug. 27, 2013 USD ($)	Nov. 25, 2015 USD ($)	Oct. 02, 2015 USD ($)	Sep. 26, 2014 USD ($)	Sep. 27, 2013 USD ($)	Oct. 02, 2015 JPY (¥)
Line Of Credit Facility [Line Items]
Interest paid on borrowings			$ 7,100,000	$ 7,000,000	$ 2,900,000
Future principal payments for long-term debt for fiscal years 2016			50,000,000
Future principal payments for long-term debt for fiscal years 2017			50,000,000
Future principal payments for long-term debt for fiscal years 2018			$ 287,500,000
Two Thousand Thirteen Credit Agreement
Line Of Credit Facility [Line Items]
Date of credit agreement			Aug. 27, 2013
Percentage of voting rights pledged			65.00%
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility
Line Of Credit Facility [Line Items]
Credit facility term (in years)			5 years
Loan facility, maximum borrowing capacity	$ 300,000,000
Loan facility maximum commitment amount			$ 200,000,000
Line of credit facility, commitment fee amount			$ 600,000	$ 600,000	$ 300,000
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility | Minimum
Line Of Credit Facility [Line Items]
Line of credit maturity (in days)			30 days
Line of credit facility, commitment fee percentage			0.15%
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility | Maximum
Line Of Credit Facility [Line Items]
Line of credit facility, commitment fee percentage			0.275%
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility | Letter of Credit
Line Of Credit Facility [Line Items]
Loan facility, maximum borrowing capacity			$ 50,000,000
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility | Swing Line Loans
Line Of Credit Facility [Line Items]
Loan facility, maximum borrowing capacity			$ 25,000,000
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility | Eurodollar | Minimum
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)			1.25%
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility | Eurodollar | Maximum
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)			1.50%
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility | Federal Funds Rate
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)			0.50%
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility | Eurodollar
Line Of Credit Facility [Line Items]
Percentage added to Eurodollar base rate before margin			1.00%
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility | Eurodollar | Minimum
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)			0.25%
Two Thousand Thirteen Credit Agreement | 2013 Revolving Credit Facility | Eurodollar | Maximum
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)			0.50%
Two Thousand Thirteen Credit Agreement | 2013 Term Loan Facility
Line Of Credit Facility [Line Items]
Credit facility term (in years)			5 years
Loan facility, maximum borrowing capacity			$ 500,000,000
Loan facility maximum commitment amount			$ 100,000,000
Two Thousand Thirteen Credit Agreement | 2013 Term Loan Facility | Eurodollar | Minimum
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)			1.00%
Two Thousand Thirteen Credit Agreement | 2013 Term Loan Facility | Eurodollar | Maximum
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)			1.25%
Two Thousand Thirteen Credit Agreement | 2013 Term Loan Facility | Federal Funds Rate
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)			0.50%
Two Thousand Thirteen Credit Agreement | 2013 Term Loan Facility | Eurodollar
Line Of Credit Facility [Line Items]
Percentage added to Eurodollar base rate before margin			1.00%
Two Thousand Thirteen Credit Agreement | 2013 Term Loan Facility | Eurodollar | Maximum
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)			0.25%
Two Thousand Twelve Credit Facility
Line Of Credit Facility [Line Items]
Loan facility, maximum borrowing capacity	300,000,000
Repayment of outstanding debt amount	$ 148,000,000
Sumitomo Credit Facility
Line Of Credit Facility [Line Items]
Loan facility, maximum borrowing capacity | ¥						¥ 3,000,000,000.0
Line of credit, basis spread on variable rate (as a percent)			0.50%
Sumitomo credit facility expiration date			Feb. 29, 2016
Amended 2013 Credit Facility | 2013 Revolving Credit Facility | Subsequent Event
Line Of Credit Facility [Line Items]
Loan facility, maximum borrowing capacity		$ 500,000,000
Amended 2013 Credit Facility | 2013 Revolving Credit Facility | Minimum | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit facility, commitment fee percentage		0.125%
Amended 2013 Credit Facility | 2013 Revolving Credit Facility | Maximum | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit facility, commitment fee percentage		0.20%
Amended 2013 Credit Facility | 2013 Revolving Credit Facility | Eurodollar | Minimum | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)		1.125%
Amended 2013 Credit Facility | 2013 Revolving Credit Facility | Eurodollar | Maximum | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)		1.375%
Amended 2013 Credit Facility | 2013 Revolving Credit Facility | Federal Funds Rate | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)		0.50%
Amended 2013 Credit Facility | 2013 Revolving Credit Facility | Eurodollar | Subsequent Event
Line Of Credit Facility [Line Items]
Percentage added to Eurodollar base rate before margin		1.00%
Amended 2013 Credit Facility | 2013 Revolving Credit Facility | Eurodollar | Minimum | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)		0.125%
Amended 2013 Credit Facility | 2013 Revolving Credit Facility | Eurodollar | Maximum | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)		0.375%
Amended 2013 Credit Facility | 2013 Term Loan Facility | Eurodollar | Minimum | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)		0.875%
Amended 2013 Credit Facility | 2013 Term Loan Facility | Eurodollar | Maximum | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)		1.125%
Amended 2013 Credit Facility | 2013 Term Loan Facility | Federal Funds Rate | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)		0.50%
Amended 2013 Credit Facility | 2013 Term Loan Facility | Eurodollar | Subsequent Event
Line Of Credit Facility [Line Items]
Percentage added to Eurodollar base rate before margin		1.00%
Amended 2013 Credit Facility | 2013 Term Loan Facility | Eurodollar | Minimum | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)		0.00%
Amended 2013 Credit Facility | 2013 Term Loan Facility | Eurodollar | Maximum | Subsequent Event
Line Of Credit Facility [Line Items]
Line of credit, basis spread on variable rate (as a percent)		0.125%