Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Reclassifications out of accumulated other comprehensive loss
Beginning balance	$ 950,238	$ 990,606	$ 989,464	$ 967,100
Amounts reclassified from accumulated other comprehensive loss:
Net current-period other comprehensive income (loss)	21,655	1,142	(17,154)	(19,486)
Ending balance	993,026	1,015,793	993,026	1,015,793
Foreign Currency Translation Adjustments
Reclassifications out of accumulated other comprehensive loss
Beginning balance	(182,822)	(142,691)	(149,711)	(128,602)
Other comprehensive income (loss) before reclassifications	21,689	5,428	(11,422)	(8,661)
Amounts reclassified from accumulated other comprehensive loss:
Interest rate contracts, net of tax	0	0	0	0
Net current-period other comprehensive income (loss)	21,689	5,428	(11,422)	(8,661)
Ending balance	(161,133)	(137,263)	(161,133)	(137,263)
Gain (Loss) on Derivative Instruments
Reclassifications out of accumulated other comprehensive loss
Beginning balance	(16,569)	(5,526)	(10,873)	1,252
Other comprehensive income (loss) before reclassifications		(4,097)		(10,384)
Amounts reclassified from accumulated other comprehensive loss:
Net current-period other comprehensive income (loss)		(4,289)		(11,067)
Ending balance		(9,815)		(9,815)
Gain (Loss) on Derivative Instruments | Interest rate swap agreements
Amounts reclassified from accumulated other comprehensive loss:
Interest rate contracts, net of tax		(192)		(683)
Gain (Loss) on Derivative Instruments
Reclassifications out of accumulated other comprehensive loss
Other comprehensive income (loss) before reclassifications	1,279		(3,200)
Amounts reclassified from accumulated other comprehensive loss:
Net current-period other comprehensive income (loss)	(30)		(5,726)
Ending balance	(16,599)		(16,599)
Gain (Loss) on Derivative Instruments | Interest rate swap agreements
Amounts reclassified from accumulated other comprehensive loss:
Interest rate contracts, net of tax	(1,309)		(2,526)
Accumulated Other Comprehensive Income (Loss)
Reclassifications out of accumulated other comprehensive loss
Beginning balance	(199,391)	(148,217)	(160,584)	(127,350)
Other comprehensive income (loss) before reclassifications	22,968	1,331	(14,622)	(19,045)
Amounts reclassified from accumulated other comprehensive loss:
Interest rate contracts, net of tax	(1,309)	(192)	(2,526)	(683)
Net current-period other comprehensive income (loss)	21,659	1,139	(17,148)	(19,728)
Ending balance	$ (177,732)	$ (147,078)	$ (177,732)	$ (147,078)