Segment and Geographic Information (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Sales:
Sales		$ 7,918,182	$ 7,490,445	$ 7,392,528	$ 6,875,613	$ 7,539,449	$ 6,856,108	$ 6,422,226	$ 5,736,780	$ 29,676,768	[1]	$ 26,554,563	[1]	$ 23,487,872	[1]
Operating income (loss):
Operating income		334,380	$ 290,310	$ 286,827	$ 235,995	286,824	$ 235,441	$ 230,446	$ 193,025	1,147,512		945,736		876,826
Restructuring, integration, and other charges										60,361		74,588		61,391
Loss on disposition of businesses, net										3,604		21,000		0
Assets		17,784,445				16,459,267				17,784,445		16,459,267
Global components [Member]
Sales:
Sales										20,856,851		18,330,456		15,408,839
Operating income (loss):
Operating income										1,007,638		801,027		686,466
Assets		11,425,579				10,229,168				11,425,579		10,229,168
Global ECS [Member]
Sales:
Sales										8,819,917		8,224,107		8,079,033
Operating income (loss):
Operating income										427,605		444,710		441,926
Assets		5,632,102				5,426,675				5,632,102		5,426,675
Corporate Segment [Member]
Operating income (loss):
Operating income	[2]									(287,731)		(300,001)		$ (251,566)
Assets		$ 726,764				$ 803,424				$ 726,764		$ 803,424

[1] Includes sales related to the United States of $12,157,306, $11,038,930, and $10,137,041 for 2018, 2017, and 2016, respectively.

[2] Includes restructuring, integration, and other charges of $60,361, $74,588, and $61,391 in 2018, 2017, and 2016, respectively. Also included in 2018 and 2017 was a net loss on the disposition of businesses of $3,604 and $21,000, respectively.