Pension and retirement plans (Periodic Pension Cost) (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 01, 2022	Oct. 02, 2021
Components of net periodic pension costs
Service cost	$ 3,004	$ 3,752
Interest cost	6,682	3,947
Expected return on plan assets	(12,215)	(12,284)
Amortization of prior service cost	1	1
Recognized net actuarial loss	617	4,086
Net periodic pension benefit	(1,911)	(498)
Selling, General and Administrative Expenses
Components of net periodic pension costs
Net periodic pension benefit	3,004	3,752
Other Income, net
Components of net periodic pension costs
Net periodic pension benefit	(4,915)	$ (4,250)
Plan
Components of net periodic pension costs
Contributions	4,000
Estimated future employer pension plan contributions	$ 4,000