External financing (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Jun. 30, 2012
Components of short-term debt
Short-term debt	$ 490,270	$ 872,404
Bank Credit Facilities [Member]
Components of short-term debt
Short-term debt	183,987	201,390
Borrowings Under the Accounts Receivable Securitization Program [Member]
Components of short-term debt
Short-term debt	304,000	670,000
Other Debt Due Within One Year [Member]
Components of short-term debt
Short-term debt	$ 2,283	$ 1,014