Segment and Geographic Information - Geographic Sales & PP&E (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Dec. 31, 2018
Revenues From External Customers And Long Lived Assets [Line Items]
Document Period End Date				Jun. 29, 2019
Sales	[1]	$ 7,344,548	$ 7,392,528	$ 14,500,539	$ 14,268,141
Property, plant, and equipment, net		813,917		813,917		$ 824,700
Americas [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Property, plant, and equipment, net	[2]	630,645		630,645		673,228
EMEA [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Property, plant, and equipment, net		132,722		132,722		110,996
Asia Pacific [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Property, plant, and equipment, net		50,550		50,550		40,476
United States [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales		2,902,393	2,968,469	5,684,428	5,618,137
Property, plant, and equipment, net		627,908		627,908		$ 670,201
Global Components [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales		5,270,935	5,284,364	10,462,862	10,214,296
Global Components [Member] | Americas [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales		1,876,799	1,937,882	3,783,828	3,734,580
Global Components [Member] | EMEA [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales	[3]	1,415,888	1,447,972	2,919,254	2,926,358
Global Components [Member] | Asia Pacific [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales		1,978,248	1,898,510	3,759,780	3,553,358
Global ECS [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales		2,073,613	2,108,164	4,037,677	4,053,845
Global ECS [Member] | Americas [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales		1,372,456	1,387,034	2,573,363	2,582,445
Global ECS [Member] | EMEA [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales	[3]	$ 701,157	$ 721,130	$ 1,464,314	$ 1,471,400

[1] Includes sales related to the United States of $2,902,393 and $5,684,428 for the second quarter and first six months of 2019 and $2,968,469 and $5,618,137 for the second quarter and first six months of 2018, respectively.

[2] Includes net property, plant, and equipment related to the United States of $627,908 and $670,201 at June 29, 2019 and December 31, 2018, respectively.

[3] Defined as Europe, the Middle East, and Africa.