Acquisitions and divestitures (2014 Acquisitions) (Details) (USD $)	12 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 30, 2012
Business Acquisition [Line Items]
Acquisitions of businesses, net of cash acquired	$ 116,882,000	$ 262,306,000	$ 313,218,000
Assets Acquired and Liabilities Assumed
Goodwill	1,348,468,000	1,261,288,000
Electronics Marketing [Member]
Assets Acquired and Liabilities Assumed
Goodwill	668,457,000	601,830,000
Technology Solutions [Member]
Assets Acquired and Liabilities Assumed
Goodwill	680,011,000	659,458,000
2014 Acquisitions [Member]
Business Acquisition [Line Items]
Number of businesses acquired	3
Business acquisition, aggregate annualized revenue of acquired businesses	492,000,000
Acquisitions of businesses, net of cash acquired	116,900,000
Contingent consideration
Cash	181,645,000
Contingent consideration	38,081,000
Total	219,726,000
Contingent consideration, maximum additional payment	50,000,000
Assets Acquired and Liabilities Assumed
Cash	64,763,000
Receivables	36,216,000
Inventories	95,202,000
Other current assets	6,597,000
Property, plant and equipment and other non-current assets	28,155,000
Intangible assets	53,502,000
Total identifiable assets acquired	284,435,000
Accounts payable, accrued liabilities and other current liabilities	(66,848,000)
Short-term debt	(45,942,000)
Other long-term liabilities	(14,535,000)
Total identifiable liabilities assumed	127,325,000
Net identifiable assets acquired	157,110,000
Goodwill	62,616,000
Net assets acquired	219,726,000
2014 Acquisitions [Member] | Electronics Marketing [Member]
Assets Acquired and Liabilities Assumed
Goodwill	52,000,000
2014 Acquisitions [Member] | Technology Solutions [Member]
Assets Acquired and Liabilities Assumed
Goodwill	$ 10,600,000