Acquisitions and divestitures 2013 Acquisitions (Details) (USD $)	3 Months Ended			12 Months Ended
	Dec. 29, 2012	Sep. 29, 2012	Mar. 31, 2012	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
Pro Forma Results For Years Ended
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
Electronics Marketing [Member]
Assets Acquired and Liabilities Assumed
Goodwill				601,830,000	545,309,000
Technology Solutions [Member]
Assets Acquired and Liabilities Assumed
Goodwill				659,458,000	555,312,000
2013 Acquisitions [Member]
Business Acquisition [Line Items]
Business acquisition revenue				1,180,000,000
Contingent consideration
Cash				297,484,000
Contingent consideration				11,467,000
Total				308,951,000
Contingent consideration, maximum additional payment				22,150,000
Acquisitions of operations and investments, net of cash acquired				262,306,000
Assets Acquired and Liabilities Assumed
Cash				29,276,000
Accounts receivable, net				226,743,000
Inventory				91,791,000
Other current assets				33,689,000
Property, plant and equipment				25,311,000
Other assets				47,292,000
Total identifiable assets acquired				454,102,000
Current liabilities				(157,986,000)
Long term debt				(66,367,000)
Total liabilities assumed				(45,640,000)
Total liabilities assumed				269,993,000
Net identifiable assets acquired				184,109,000
Goodwill				157,521,000
Bargain purchase recognized				(32,679,000)
Net assets acquired				308,951,000
Intangible assets				35,248,000
Account receivable, gross				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
2013 Acquisitions [Member] | Electronics Marketing [Member]
Assets Acquired and Liabilities Assumed
Goodwill				62,039,000
2013 Acquisitions [Member] | Technology Solutions [Member]
Assets Acquired and Liabilities Assumed
Goodwill				95,482,000
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