Pension and Retirement Plans (Tables)

9 Months Ended

Mar. 28, 2015

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Components of net periodic pension costs

	Third Quarters Ended				Nine Months Ended
	March 28,		March 29,		March 28,		March 29,
	2015		2014		2015		2014
	(Thousands)
Service cost	$	9,873	$	9,183	$	29,619	$	27,549
Interest cost		4,449		4,289		13,347		12,867
Expected return on plan assets		(9,055)		(7,727)		(27,165)		(23,181)
Recognized net actuarial loss		3,251		3,171		9,753		9,513
Amortization of prior service credits		(393)		(393)		(1,179)		(1,179)
Net periodic pension cost	$	8,125	$	8,523	$	24,375	$	25,569