Segment and Geographic Information (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Sales:
Sales		$ 7,633,870	$ 6,953,740	$ 6,465,346	$ 5,759,552	$ 6,442,891	$ 5,936,092	$ 5,972,101	$ 5,474,177	$ 26,812,508	$ 23,825,261	$ 23,282,020
Operating income (loss):
Operating income		270,914	$ 235,992	$ 229,822	$ 191,722	254,899	$ 198,684	$ 223,592	$ 181,364	928,450	858,539	824,482
Restructuring, integration, and other charges										91,294	73,602	68,765
Impairment of assets held for sale										21,000	0	0
Assets		16,462,809				14,206,366				16,462,809	14,206,366
Property, Plant and Equipment, Net		838,475				756,299				838,475	756,299
Global components [Member]
Sales:
Sales										18,330,456	15,408,839	14,405,793
Operating income (loss):
Operating income										801,027	686,466	649,396
Assets		10,229,168				8,360,926				10,229,168	8,360,926
Global ECS [Member]
Sales:
Sales										8,482,052	8,416,422	8,876,227
Operating income (loss):
Operating income										445,081	441,803	424,063
Assets		5,430,217				5,053,172				5,430,217	5,053,172
Corporate Segment [Member]
Operating income (loss):
Operating income	[1]									(317,658)	(269,730)	(248,977)
Assets		803,424				792,268				803,424	792,268
UNITED STATES
Sales:
Sales										11,321,917	10,501,131	10,761,932
Operating income (loss):
Property, Plant and Equipment, Net		683,988				626,964				683,988	626,964
Americas [Member]
Sales:
Sales	[2]									12,408,383	11,442,690	11,721,528
Operating income (loss):
Property, Plant and Equipment, Net	[3]	688,637				631,386				688,637	631,386
EMEA [Member]
Sales:
Sales										7,673,348	6,772,685	6,788,738
Operating income (loss):
Property, Plant and Equipment, Net		108,232				90,834				108,232	90,834
Asia/Pacific [Member]
Sales:
Sales										6,730,777	5,609,886	$ 4,771,754
Operating income (loss):
Property, Plant and Equipment, Net		$ 41,606				$ 34,079				$ 41,606	$ 34,079

[1] Includes restructuring, integration, and other charges of $91,294, $73,602, and $68,765 in 2017, 2016, and 2015, respectively, as well as an impairment on assets held for sale of $21,000 in 2017.

[2] Includes sales related to the United States of $11,321,917, $10,501,131, and $10,761,932 in 2017, 2016, and 2015, respectively.

[3] Includes net property, plant, and equipment related to the United States of $683,988 and $626,964 at December 31, 2017 and 2016, respectively.