Reclassification from accumulated other comprehensive income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 28, 2013	Sep. 29, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest rate swap contracts	$ 1,581	$ 1,036
Tax benefit	8,530	6,618
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total, net of tax	364
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total, pre-tax	453
Tax benefit	(170)
Total, net of tax	283
Amortization of net loss	453
Interest Rate Swap [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest rate swap contracts	129
Total, pre-tax	129
Tax benefit	(48)
Total, net of tax	$ 81