Goodwill (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Goodwill [Roll Forward]
Goodwill, Beginning balance		$ 2,470,047	[1]	$ 2,392,220	[2]
Acquisitions		211,301		6,149
Loss on disposition of businesses, net		0		(7,922)
Foreign currency translation adjustment		(56,658)		79,600
Goodwill, Ending balance	[1]	2,624,690		2,470,047
Goodwill, Impaired, Accumulated Impairment Loss		1,026,702				$ 1,018,780
Global Components [Member]
Goodwill [Roll Forward]
Goodwill, Beginning balance		1,264,869	[1]	1,239,741	[2]
Acquisitions		197,126		6,149
Loss on disposition of businesses, net		0		0
Foreign currency translation adjustment		(24,494)		18,979
Goodwill, Ending balance	[1]	1,437,501		1,264,869
Goodwill, Impaired, Accumulated Impairment Loss		716,925
Global ECS [Member]
Goodwill [Roll Forward]
Goodwill, Beginning balance		1,205,178	[1]	1,152,479	[2]
Acquisitions		14,175		0
Loss on disposition of businesses, net		0		(7,922)
Foreign currency translation adjustment		(32,164)		60,621
Goodwill, Ending balance	[1]	1,187,189		$ 1,205,178
Goodwill, Impaired, Accumulated Impairment Loss		$ 309,777				$ 301,855

[1] The total carrying value of goodwill of companies acquired as of December 31, 2018 and December 31, 2017, in the table above is reflected net of $1,026,702 of accumulated impairment charges, of which $716,925 was recorded in the global components business segment and $309,777 was recorded in the global ECS business segment.

[2] The total carrying value of goodwill of companies acquired as of December 31, 2016 in the table above is reflected net of $1,018,780 of accumulated impairment charges, of which $716,925 was recorded in the global components business segment and $301,855 was recorded in the global ECS business segment.