Acquisitions and divestitures (2012 Acquisitions) (Details) (USD $)	12 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 30, 2012
Contingent consideration
Acquisitions of operations and investments, 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
Pro Forma Results For Years Ended
Gain on bargain purchase			(900,000)
Gain on bargain purchase per share on a diluted basis			$ 0.01
2013 Acquisitions [Member]
Business Acquisition [Line Items]
Number of businesses acquired		12
Business acquisition revenue		1,180,000,000
Contingent consideration
Cash paid		297,484,000
Contingent consideration		11,467,000
Total consideration	308,951,000	308,951,000
Contingent consideration, maximum additional payment		22,200,000
Acquisitions of operations and investments, net of cash acquired		262,300,000
Assets Acquired and Liabilities Assumed
Cash		29,276,000
Receivables		226,743,000
Inventories		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
Accounts payable, accrued liabilities and other current liabilities		(157,986,000)
Long-term debt		(66,367,000)
Total identifiable liabilities assumed		(45,640,000)
Total identifiable 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	308,951,000
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		32,700,000
Gain on bargain purchase per share on a diluted basis		$ 0.23
2012 Acquisitions [Member]
Business Acquisition [Line Items]
Number of businesses acquired			11
Business acquisition revenue			912,000,000
Contingent consideration
Cash paid			390,410,000
Contingent consideration			23,175,000
Total consideration			413,585,000
Contingent consideration, maximum additional payment			124,000,000
Acquisitions of operations and investments, net of cash acquired			313,200,000
Assets Acquired and Liabilities Assumed
Cash			75,016,000
Receivables			132,195,000
Inventories			59,463,000
Other current assets			23,936,000
Property, plant and equipment			9,729,000
Other assets			104,368,000
Total identifiable assets acquired			404,707,000
Accounts payable, accrued liabilities and other current liabilities			(230,747,000)
Total identifiable liabilities assumed			(2,483,000)
Total identifiable liabilities assumed			233,230,000
Net identifiable assets acquired			171,477,000
Goodwill			246,425,000
Bargain purchase recognized			(4,317,000)
Net assets acquired			413,585,000
Intangible assets			93,300,000
Pro Forma Results For Years Ended
Sales			26,052,000,000
Net income			568,000,000
Unidux Electronics Limited [Member]
Pro Forma Results For Years Ended
Gain on bargain purchase			4,300,000
Gain on bargain purchase per share on a diluted basis			$ 0.03
Electronics Marketing [Member]
Assets Acquired and Liabilities Assumed
Goodwill	668,457,000	601,830,000
Electronics Marketing [Member] | 2013 Acquisitions [Member]
Assets Acquired and Liabilities Assumed
Goodwill		62,000,000
Electronics Marketing [Member] | 2012 Acquisitions [Member]
Assets Acquired and Liabilities Assumed
Goodwill			180,000,000
Technology Solutions [Member]
Assets Acquired and Liabilities Assumed
Goodwill	680,011,000	659,458,000
Technology Solutions [Member] | 2013 Acquisitions [Member]
Assets Acquired and Liabilities Assumed
Goodwill		95,500,000
Technology Solutions [Member] | 2012 Acquisitions [Member]
Assets Acquired and Liabilities Assumed
Goodwill			$ 66,400,000