Acquisitions and divestitures 2012 Acquisitions (Details) (USD $)	3 Months Ended							12 Months Ended
	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 29, 2013	Jun. 30, 2012	Jul. 02, 2011
Contingent consideration
Acquisitions of operations and investments, net of cash acquired								$ 262,306,000	$ 313,218,000	$ 690,997,000
Assets Acquired and Liabilities Assumed
Goodwill	1,261,288,000				1,100,621,000			1,261,288,000	1,100,621,000
Pro Forma Results For Years Ended
Pre-tax restructuring, integration and other charges	59,800,000	27,300,000	24,900,000	37,400,000	20,500,000	18,600,000	34,500,000	149,501,000	73,585,000	77,176,000
Gain on bargain purchase			1,700,000	31,300,000		4,500,000			(854,000)	(3,857,000)
Business Acquisition Gain On Bargain Purchase Per Share On A Diluted Basis				$ 0.22		$ 0.03			$ 0.01	$ 0.02
2013 Acquisitions [Member]
Business Acquisition [Line Items]
Number of businesses acquired								12
Business acquisition revenue								1,180,000,000
Contingent consideration
Cash								297,484,000
Contingent consideration	11,467,000							11,467,000
Total	308,951,000							308,951,000
Contingent consideration, maximum additional payment	22,150,000							22,150,000
Acquisitions of operations and investments, net of cash acquired								262,306,000
Assets Acquired and Liabilities Assumed
Cash	29,276,000							29,276,000
Accounts receivable, net	226,743,000							226,743,000
Inventory	91,791,000							91,791,000
Other current assets	33,689,000							33,689,000
Property, plant and equipment	25,311,000							25,311,000
Other assets	47,292,000							47,292,000
Total identifiable assets acquired	454,102,000							454,102,000
Current liabilities	(157,986,000)							(157,986,000)
Total liabilities assumed	(45,640,000)							(45,640,000)
Total liabilities assumed	269,993,000							269,993,000
Net identifiable assets acquired	184,109,000							184,109,000
Goodwill	157,521,000							157,521,000
Bargain purchase recognized	(32,679,000)							(32,679,000)
Net assets acquired	308,951,000							308,951,000
Intangible assets	35,248,000							35,248,000
Account receivable, gross	228,980,000							228,980,000
Pro Forma Results For Years Ended
Sales								25,771,000,000	26,872,000,000
Net income								454,000,000	587,000,000
Internix, Inc [Member]
Pro Forma Results For Years Ended
Gain on bargain purchase								32,679,000
Business Acquisition Gain On Bargain Purchase Per Share On A Diluted Basis								$ 0.23
2012 Acquisitions [Member]
Business Acquisition [Line Items]
Number of businesses acquired									11
Contingent consideration
Cash									390,410,000
Contingent consideration					23,175,000				23,175,000
Total					413,585,000				413,585,000
Contingent consideration, maximum additional payment					124,419,000				124,419,000
Assets Acquired and Liabilities Assumed
Cash					75,016,000				75,016,000
Accounts receivable, net					132,195,000				132,195,000
Inventory					59,463,000				59,463,000
Other current assets					23,936,000				23,936,000
Property, plant and equipment					9,729,000				9,729,000
Other assets					104,368,000				104,368,000
Total identifiable assets acquired					404,707,000				404,707,000
Current liabilities					(230,747,000)				(230,747,000)
Total liabilities assumed					(2,483,000)				(2,483,000)
Total liabilities assumed					233,230,000				233,230,000
Net identifiable assets acquired					171,477,000				171,477,000
Goodwill					246,425,000				246,425,000
Bargain purchase recognized					(4,317,000)				(4,317,000)
Net assets acquired					413,585,000				413,585,000
Intangible assets					93,291,000				93,291,000
Account receivable, gross					134,337,000				134,337,000
Pro Forma Results For Years Ended
Sales									26,052,000,000	27,404,000,000
Net income									568,000,000	700,300,000
Pre-tax restructuring, integration and other charges									11,172,000
Unidux Electronics Limited [Member]
Contingent consideration
Total										163,770,000
Acquisitions of operations and investments, net of cash acquired										(132,780,000)
Assets Acquired and Liabilities Assumed
Net assets acquired										163,770,000
Pro Forma Results For Years Ended
Gain on bargain purchase									4,317,000	30,990,000
Business Acquisition Gain On Bargain Purchase Per Share On A Diluted Basis									$ 0.03	$ 0.20
Electronics Marketing [Member]
Assets Acquired and Liabilities Assumed
Goodwill	601,830,000				545,309,000			601,830,000	545,309,000
Electronics Marketing [Member] | 2013 Acquisitions [Member]
Assets Acquired and Liabilities Assumed
Goodwill	62,039,000							62,039,000
Electronics Marketing [Member] | 2012 Acquisitions [Member]
Assets Acquired and Liabilities Assumed
Goodwill					179,989,000				179,989,000
Technology Solutions [Member]
Assets Acquired and Liabilities Assumed
Goodwill	659,458,000				555,312,000			659,458,000	555,312,000
Technology Solutions [Member] | 2013 Acquisitions [Member]
Assets Acquired and Liabilities Assumed
Goodwill	95,482,000							95,482,000
Technology Solutions [Member] | 2012 Acquisitions [Member]
Assets Acquired and Liabilities Assumed
Goodwill					$ 66,436,000				$ 66,436,000