Restructuring Charges and Asset Impairment Charges - Schedule of Activity and Reserve Balances for Restructuring (Details) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Restructuring Reserve [Roll Forward]
Reserve balance beginning of year	$ 300,000	$ 2,300,000
Restructuring charges and asset impairment charges	0	18,000,000	$ 29,100,000
Cash payments	(300,000)	(3,000,000)
Payments from qualified pension plan associated with restructuring charges	0	(9,400,000)
Non-cash asset impairment charges and other	0	(7,600,000)
Reserve balance end of year	$ 0	$ 300,000	$ 2,300,000