Acquisitions (Details) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
		Jul. 01, 2017 USD ($) $ / shares	Jul. 02, 2016 USD ($) $ / shares	Jul. 01, 2017 USD ($) $ / shares	Jul. 02, 2016 USD ($) $ / shares	Dec. 31, 2016 USD ($) Acquisitions
Business Acquisition [Line Items]
Purchase of shares from noncontrolling interest				$ 23,350	$ 0
Payments to Acquire Businesses, Net of Cash Acquired				2,534	45,473
Goodwill	[1]	$ 2,446,864		2,446,864		$ 2,392,220
Sales		6,465,346	$ 5,972,101	12,224,898	11,446,278
Net income attributable to shareholders		$ 99,679	$ 134,270	$ 213,447	$ 240,505
Basic | $ / shares		$ 1.12	$ 1.46	$ 2.40	$ 2.62
Diluted | $ / shares	[2]	$ 1.11	$ 1.45	$ 2.37	$ 2.59
Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				10 years		10 years
Other Intangible Assets [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				5 years
Data Modul AG [Member]
Business Acquisition [Line Items]
Additional Percentage Interest Acquired of Subsidiary Shares from Noncontrolling Interest				11.90%
Business Acquisition, Percentage of Voting Interests Acquired		69.20%		69.20%
Purchase of shares from noncontrolling interest				$ 23,350
Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition [Line Items]
Number of Businesses Acquired | Acquisitions						3
Payments to Acquire Businesses, Net of Cash Acquired						$ 63,869

[1] The total carrying value of goodwill 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.

[2] Stock-based compensation awards for the issuance of 432 and 328 shares for the second quarter and first six months of 2017 and 848 and 987 shares for the second quarter and first six months 2016, respectively, were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive.