Debt - short-term debt (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 28, 2019	Jun. 29, 2019
Components of short-term debt
Short-term debt	$ 492,223	$ 300,538
Bank credit facilities and other
Components of short-term debt
Short-term Debt, Weighted Average Interest Rate	1.94%	1.02%
Short-term debt	$ 323	$ 538
Accounts receivable securitization program
Components of short-term debt
Short-term Debt, Weighted Average Interest Rate	2.55%
Short-term debt	$ 191,900
Notes Due June 2020
Components of short-term debt
Short-term Debt, Weighted Average Interest Rate	5.88%	5.88%
Short-term debt	$ 300,000	$ 300,000