Segment and Geographic Information (Details) - USD ($) $ in Thousands		3 Months Ended							12 Months Ended
		Mar. 31, 2018		Dec. 31, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017		Dec. 31, 2017
Sales:
Sales		$ 6,875,613	[1]	$ 7,539,449	$ 6,856,108	$ 6,422,226	$ 5,736,780	[1]	$ 26,554,563
Operating income (loss):
Operating income		235,995		286,824	$ 235,441	$ 230,446	193,025		945,736
Restructuring, integration, and other charges		21,171					15,505
Loss on disposition of businesses, net		1,562					0
Assets		16,124,805		16,459,267					16,459,267
Global Components [Member]
Sales:
Sales		4,929,932					4,058,803
Operating income (loss):
Operating income		229,546					173,533
Assets		10,721,997		10,229,168					10,229,168
Global ECS [Member]
Sales:
Sales		1,945,681					1,677,977
Operating income (loss):
Operating income		83,806					82,189
Assets		4,546,410		5,426,675					5,426,675
Corporate Segment [Member]
Operating income (loss):
Operating income	[2]	(77,357)					$ (62,697)
Assets		$ 856,398		$ 803,424					$ 803,424

[1] Includes sales related to the United States of $2,649,668 and $2,342,128 for the first quarter of 2018 and 2017, respectively.

[2] Includes restructuring, integration, and other charges of $21,171 and $15,505 for the first quarter of 2018 and 2017, respectively, as well as a net loss on the disposition of businesses of $1,562 for the first quarter of 2018.