Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2019	Dec. 30, 2018
Reclassifications out of accumulated other comprehensive loss
Beginning balance	$ 989,464	$ 967,100
Amounts reclassified from accumulated other comprehensive loss:
Net current-period other comprehensive income	15,571	(27,106)
Ending balance	1,026,765	954,303
Foreign Currency Translation Adjustments
Reclassifications out of accumulated other comprehensive loss
Beginning balance	(149,711)	(128,602)
Other comprehensive loss before reclassifications	13,899	(23,334)
Amounts reclassified from accumulated other comprehensive loss:
Interest rate contracts, net of tax	0	0
Net current-period other comprehensive income	13,899	(23,334)
Ending balance	(135,812)	(151,936)
Gain (Loss) on Derivative Instruments
Reclassifications out of accumulated other comprehensive loss
Beginning balance		1,252
Other comprehensive loss before reclassifications		(3,783)
Amounts reclassified from accumulated other comprehensive loss:
Interest rate contracts, net of tax		226
Ending balance		(2,757)
Gain (Loss) on Derivative Instruments
Reclassifications out of accumulated other comprehensive loss
Other comprehensive loss before reclassifications	2,153
Amounts reclassified from accumulated other comprehensive loss:
Interest rate contracts, net of tax	483
Accumulated Other Comprehensive Gain (Loss)
Reclassifications out of accumulated other comprehensive loss
Beginning balance	(160,584)	(127,350)
Other comprehensive loss before reclassifications	16,052	(27,117)
Amounts reclassified from accumulated other comprehensive loss:
Interest rate contracts, net of tax	483	226
Net current-period other comprehensive income	15,569	(27,343)
Ending balance	$ (145,015)	$ (154,693)