Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	$ 3,501,782	$ 3,296,446
Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	3,390,394	3,164,434
Elimination of inter-segment sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	111,388	132,012
Healthcare/Life Sciences | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	1,258,385	1,219,998
Industrial/Commercial | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	1,254,564	981,220
Aerospace/Defense | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	611,568	588,600
Communications | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	265,877	374,616
AMER
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	1,327,849	1,429,308
AMER | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	1,317,120	1,422,313
AMER | Elimination of inter-segment sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	10,729	6,995
AMER | Healthcare/Life Sciences | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	464,134	488,851
AMER | Industrial/Commercial | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	324,120	359,381
AMER | Aerospace/Defense | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	371,685	317,558
AMER | Communications | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	157,181	256,523
APAC
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	1,824,831	1,557,205
APAC | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	1,730,476	1,437,708
APAC | Elimination of inter-segment sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	94,355	119,497
APAC | Healthcare/Life Sciences | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	618,250	602,922
APAC | Industrial/Commercial | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	850,662	534,971
APAC | Aerospace/Defense | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	157,301	186,486
APAC | Communications | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	104,263	113,329
EMEA
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	349,102	309,933
EMEA | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	342,798	304,413
EMEA | Elimination of inter-segment sales
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	6,304	5,520
EMEA | Healthcare/Life Sciences | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	176,001	128,225
EMEA | Industrial/Commercial | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	79,782	86,868
EMEA | Aerospace/Defense | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	82,582	84,556
EMEA | Communications | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer	$ 4,433	$ 4,764