Pension and Postretirement Benefits Net Periodic Income and Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Dec. 31, 2017	Jan. 01, 2017
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	$ (300)	$ 1,652	$ 1,201	$ 3,379
Interest Cost on Projected Benefit Obligation	10,760	10,832	21,534	21,678
Expected Return on Plan Assets	(15,482)	(16,095)	(30,956)	(32,213)
Amortization of Prior Service Cost (Credit)	45	45	90	90
Amortization of Actuarial Loss	3,871	4,276	7,666	8,479
Net Periodic Expense (Income)	(1,106)	710	(465)	1,413
Other Postretirement Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	25	32	67	95
Interest Cost on Projected Benefit Obligation	591	597	1,186	1,191
Expected Return on Plan Assets	0	0	0	0
Amortization of Prior Service Cost (Credit)	(359)	(663)	(717)	(1,327)
Amortization of Actuarial Loss	856	661	1,726	1,398
Net Periodic Expense (Income)	$ 1,113	$ 627	$ 2,262	$ 1,357