Cost in Excess of Net Assets of Companies Acquired - Goodwill (Details) $ in Thousands	6 Months Ended
	Jul. 02, 2016 USD ($)
Goodwill [Roll Forward]
December 31, 2015	$ 2,368,832	[1]
Acquisitions and related adjustments	41,837
Foreign currency translation adjustment	8,289
July 2, 2016	2,418,958	[1]
Goodwill, Impaired, Accumulated Impairment Loss	1,018,780
Global Components [Member]
Goodwill [Roll Forward]
December 31, 2015	1,230,832	[1]
Acquisitions and related adjustments	2,224
Foreign currency translation adjustment	2,359
July 2, 2016	1,235,415	[1]
Goodwill, Impaired, Accumulated Impairment Loss	716,925
Global ECS [Member]
Goodwill [Roll Forward]
December 31, 2015	1,138,000	[1]
Acquisitions and related adjustments	39,613
Foreign currency translation adjustment	5,930
July 2, 2016	1,183,543	[1]
Goodwill, Impaired, Accumulated Impairment Loss	$ 301,855

[1] The total carrying value of cost in excess of net assets of companies acquired for all periods 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.