Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2017	Jun. 26, 2016	Jul. 02, 2017	Jun. 26, 2016
Reclassifications out of accumulated other comprehensive loss
Balance at the beginning of the period			$ 869,259
Balance at the end of the period	$ 914,864		914,864
Foreign Currency Translation Adjustments
Reclassifications out of accumulated other comprehensive loss
Balance at the beginning of the period	(133,703)	$ (131,137)	(126,844)	$ (141,229)
Other comprehensive income (loss) before reclassifications	14,049	9,052	7,190	19,144
Net current-period other comprehensive income (loss)	14,049	9,052	7,190	19,144
Balance at the end of the period	(119,654)	(122,085)	(119,654)	(122,085)
Gain (Loss) on Derivative Instruments
Reclassifications out of accumulated other comprehensive loss
Balance at the beginning of the period	284	(1,429)	(1,164)	(1,942)
Other comprehensive income (loss) before reclassifications	272	(104)	2,299	1,423
Reclassification adjustment of prior derivative settlement, net of tax	(134)	(420)	(713)	(1,434)
Net current-period other comprehensive income (loss)	138	(524)	1,586	(11)
Balance at the end of the period	422	(1,953)	422	(1,953)
Accumulated Other Comprehensive Loss
Reclassifications out of accumulated other comprehensive loss
Balance at the beginning of the period	(133,419)	(132,566)	(128,008)	(143,171)
Other comprehensive income (loss) before reclassifications	14,321	8,948	9,489	20,567
Reclassification adjustment of prior derivative settlement, net of tax	(134)	(420)	(713)	(1,434)
Net current-period other comprehensive income (loss)	14,187	8,528	8,776	19,133
Balance at the end of the period	$ (119,232)	$ (124,038)	$ (119,232)	$ (124,038)