Income taxes (Effective Tax Rate) (Details)	12 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 30, 2012
Reconciliation between federal statutory tax rate and effective tax rate
Federal statutory rate	35.00%	35.00%	35.00%
State and local income taxes, net of federal benefit	1.30%	1.10%	1.80%
Foreign tax rates, net of valuation allowances	(9.30%)	(7.20%)	(5.40%)
Release of valuation allowance, net of U.S tax expense	(4.80%)	(6.40%)	(2.80%)
Change in contingency reserves	(0.10%)	0.40%	0.50%
Tax audit settlements	(0.60%)	(6.00%)	(1.00%)
Other, net	0.70%	1.20%	0.20%
Effective tax rate	22.20%	18.10%	28.30%