Other Comprehensive Income - Reclassification from accumulated other comprehensive income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 26, 2015	Dec. 27, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest rate swap contracts	$ (1,656)	$ (1,923)	$ (3,283)	$ (3,718)
Tax benefit (expense)	(11,335)	(9,748)	(21,323)	(18,435)
Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total amounts reclassified, net of tax	385	464	775	930
Pension benefit liabilities | Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Tax benefit (expense)	(254)	(229)	(508)	(457)
Amortization of net loss	676	608	1,353	1,217
Total amounts reclassified, net of tax	422	379	845	760
Interest rate swap | Derivative financial instruments | Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest rate swap contracts	(58)	135	(111)	273
Tax benefit (expense)	21	(50)	41	(103)
Total amounts reclassified, net of tax	$ (37)	$ 85	$ (70)	$ 170