CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 89,918	$ 652	$ 12,132
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on derivative instruments designated as cash flow hedges, net of taxes	185	(14,295)	18,685
Losses (Gains) on derivative instruments designated as cash flow hedges reclassified to cost of goods sold, net of taxes	8,064	(4,211)	(1,161)
Change in the funded status of retiree benefit obligations, net of taxes	11,461	14,122	2,802
Total comprehensive income (loss), net of tax	$ 86,706	$ (31,976)	$ 26,854