Segment and Geographic Information - Geographic Sales & PP&E (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended										12 Months Ended
	Dec. 31, 2014		Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2013		Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Revenues From External Customers And Long Lived Assets [Line Items]
Sales	$ 6,396,879		$ 5,613,216	$ 5,676,539	$ 5,082,040	$ 6,153,360		$ 5,048,211	$ 5,306,085	$ 4,849,629	$ 22,768,674		$ 21,357,285		$ 20,405,128
Property, Plant, and Equipment, Net	636,299					632,389					636,299		632,389
Americas [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales											11,340,277	[1]	11,023,076	[1]	10,641,903	[1]
Property, Plant, and Equipment, Net	537,967	[2]				526,640	[2]				537,967	[2]	526,640	[2]
EMEA [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales											6,864,104		6,221,569		5,927,231
Property, Plant, and Equipment, Net	76,487					84,383					76,487		84,383
Asia/Pacific [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Sales											4,564,293		4,112,640		3,835,994
Property, Plant, and Equipment, Net	21,845					21,366					21,845		21,366
UNITED STATES
Revenues From External Customers And Long Lived Assets [Line Items]
Sales											10,359,936		10,074,361		9,746,612
Property, Plant, and Equipment, Net	$ 535,397					$ 525,080					$ 535,397		$ 525,080

[1] Includes sales related to the United States of $10,359,936, $10,074,361, and $9,746,612 in 2014, 2013, and 2012, respectively.

[2] Includes net property, plant, and equipment related to the United States of $535,397 and $525,080 at December 31, 2014 and 2013, respectively.