Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 01, 2017	Dec. 27, 2015
Reclassifications out of accumulated other comprehensive income (loss)
Balance at the beginning of the period	$ 869,259
Balance at the end of the period	872,571
Foreign Currency Translation Adjustments
Reclassifications out of accumulated other comprehensive income (loss)
Balance at the beginning of the period	(126,844)	$ (141,229)
Other comprehensive income (loss) before classifications	(16,182)	(16,484)
Net current-period other comprehensive income (loss)	(16,182)	(16,484)
Balance at the end of the period	(143,026)	(157,713)
Loss on Derivative Instruments
Reclassifications out of accumulated other comprehensive income (loss)
Balance at the beginning of the period	(1,164)	(1,942)
Other comprehensive income (loss) before classifications	1,338	1,671
Reclassification adjustment of prior derivative settlement, net of tax	(342)	(561)
Net current-period other comprehensive income (loss)	996	1,110
Balance at the end of the period	(168)	(832)
Accumulated Other Comprehensive Loss
Reclassifications out of accumulated other comprehensive income (loss)
Balance at the beginning of the period	(128,008)	(143,171)
Other comprehensive income (loss) before classifications	(14,844)	(14,813)
Reclassification adjustment of prior derivative settlement, net of tax	(342)	(561)
Net current-period other comprehensive income (loss)	(15,186)	(15,374)
Balance at the end of the period	$ (143,194)	$ (158,545)