Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018		Jun. 30, 2017		Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 135,314	[1]	$ 115,314	[2]	$ 121,764
Defined Benefit Pension and Postretirement Benefit Plans:
Net gain (loss) arising during the period, before tax	3,041		3,334		(4,200)
Prior service credit arising during the period, before tax	0		0		1,770
Amortization of loss, before tax	536		677		505
Amortization of prior service credit, before tax	(182)		(182)		(126)
Total Other Comprehensive Income (Loss), Before Tax	3,395		3,829		(2,051)
Tax Attributes of Items in Other Comprehensive Income (Loss):
Net gain (loss) arising during the period, tax	(710)		(1,231)		1,551
Prior service credit arising during the period, tax	0		0		(654)
Amortization of loss, tax	(180)		(250)		(186)
Amortization of prior service credit, tax	61		66		47
Total Tax (Expense) Benefit	(829)		(1,415)		758
Other Comprehensive Income (Loss), Net of Tax	2,566		2,414		(1,293)
Comprehensive Income	$ 137,880		$ 117,728		$ 120,471

[1] Included in the second quarter net income was the one-time preliminary deferred tax benefit of $8.9 million, or approximately $0.32 per diluted share, resulting from the Tax Act. The fiscal year impact was $9.5 million, or approximately $0.35 per diluted share.

[2] Included in the third quarter and fiscal year net income was expense of $11.5 million, net of taxes, or approximately $0.42 per diluted share, related to a multiemployer pension settlement and other benefit-related costs.