Segment information (Details Textuals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 27, 2014	Dec. 28, 2013	Jun. 28, 2014
Segment Reporting Information [Line Items]
Sales	$ 7,551,880	$ 7,421,854	$ 14,391,466	$ 13,767,329
Property, plant and equipment, net	541,904		541,904		534,999
United States [Member]
Segment Reporting Information [Line Items]
Sales	2,700,000	2,690,000	5,060,000	4,930,000
Property, plant and equipment, net	330,900		330,900		298,100
Germany [Member]
Segment Reporting Information [Line Items]
Sales	787,800	921,700	1,530,000	1,640,000
Property, plant and equipment, net	84,400		84,400		95,500
Belgium [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	54,900		54,900		61,000
China [Member]
Segment Reporting Information [Line Items]
Sales	727,100	728,200	1,470,000	1,460,000
Taiwan [Member]
Segment Reporting Information [Line Items]
Sales	1,007,400	767,300	1,820,000	1,400,000
UNITED KINGDOM
Segment Reporting Information [Line Items]
Sales	$ 384,800	$ 355,800	$ 745,200	$ 640,800