Reportable Segments, Geographic Information and Major Customers - Schedule of Reportable Segments Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 03, 2020	Jul. 04, 2020	Apr. 04, 2020	Jan. 04, 2020	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Net sales	$ 913,227	$ 857,394	$ 767,364	$ 852,409	$ 810,195	$ 799,644	$ 789,051	$ 765,544	$ 3,390,394	$ 3,164,434	$ 2,873,508
Operating income (loss):									153,372	142,055	118,283
Other income (expense):
Interest expense									(16,162)	(12,853)	(12,226)
Interest income									1,878	1,949	4,696
Miscellaneous, net									(3,691)	(5,196)	(3,143)
Income before income taxes									135,397	125,955	107,610
Depreciation									55,504	50,885	48,095
Capital expenditures									50,088	90,600	62,780
Total assets	2,289,848				2,000,883				2,289,848	2,000,883
Elimination of inter-segment sales
Net sales									(111,388)	(132,012)	(124,935)
Corporate
Operating income (loss):									(132,882)	(128,378)	(135,736)
Other income (expense):
Depreciation									6,437	5,344	4,863
Capital expenditures									9,248	9,501	4,149
Corporate and eliminations
Other income (expense):
Total assets	177,110				80,608				177,110	80,608
AMER | Operating Segments
Net sales									1,327,849	1,429,308	1,218,944
Operating income (loss):									38,126	57,780	38,637
Other income (expense):
Depreciation									24,217	22,531	21,224
Capital expenditures									13,361	42,459	17,690
Total assets	759,030				751,990				759,030	751,990
APAC | Operating Segments
Net sales									1,824,831	1,557,205	1,498,010
Operating income (loss):									246,636	208,178	213,935
Other income (expense):
Depreciation									17,912	16,905	15,954
Capital expenditures									18,902	33,454	33,018
Total assets	1,073,951				958,744				1,073,951	958,744
EMEA | Operating Segments
Net sales									349,102	309,933	281,489
Operating income (loss):									1,492	4,475	1,447
Other income (expense):
Depreciation									6,938	6,105	6,054
Capital expenditures									8,577	5,186	$ 7,923
Total assets	$ 279,757				$ 209,541				$ 279,757	$ 209,541