Fair Value of Derivative Instruments in Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Apr. 01, 2016	Oct. 02, 2015
Foreign Exchange Forward | Other Current Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	$ 3,353	$ 1,527
Foreign Exchange Forward | Other Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	2,535	48
Foreign Exchange Forward | Other Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	3,107	6,296
Foreign Exchange Forward | Accrued Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	14,181	20,688
Embedded Derivative Financial Instruments | Other Current Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	2,030	2,913
Embedded Derivative Financial Instruments | Other Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	376	1,079
Embedded Derivative Financial Instruments | Other Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	255	29
Embedded Derivative Financial Instruments | Accrued Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	$ 1,282	$ 351