Fair Values of Derivative Instruments in Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Oct. 02, 2015
Foreign Exchange Forward | Other Current Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	$ 1,757	$ 1,527
Foreign Exchange Forward | Other Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	1,334	48
Foreign Exchange Forward | Other Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	3,380	6,296
Foreign Exchange Forward | Accrued Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	11,168	20,688
Embedded Derivative Financial Instruments | Other Current Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	1,864	2,913
Embedded Derivative Financial Instruments | Other Assets
Derivatives Fair Value [Line Items]
Derivative Instruments, Assets	621	1,079
Embedded Derivative Financial Instruments | Other Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	119	29
Embedded Derivative Financial Instruments | Accrued Liabilities
Derivatives Fair Value [Line Items]
Derivative Instruments, Liabilities	$ 866	$ 351