Accumulated Other Comprehensive (Loss) Income - Components of and Changes in AOCL (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive (Loss) Income	$ (320,325)	$ (323,692)
Other comprehensive income (loss), net of tax	2,618	30,099	$ (112,690)
Post-retirement Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive (Loss) Income	(187,755)	(189,038)	(212,163)
Other comprehensive loss before reclassifications	(5,991)	15,559	(78,295)
Amounts reclassified from accumulated other comprehensive loss	7,274	7,566	4,925
Net current period other comprehensive loss	1,283	23,125	(73,370)
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive (Loss) Income	(127,347)	(126,606)	(131,212)
Other comprehensive loss before reclassifications	(741)	4,606	(51,508)
Amounts reclassified from accumulated other comprehensive loss		0	15,088
Sale of subsidiary stock to noncontrolling interests			2,517
Net current period other comprehensive loss	(741)	4,606	(36,420)
Derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive (Loss) Income	(5,223)	(8,048)	(9,134)
Other comprehensive loss before reclassifications	(922)	(471)	(150)
Amounts reclassified from accumulated other comprehensive loss	3,747	1,557	(1,563)
Net current period other comprehensive loss	2,825	1,086	(1,713)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive (Loss) Income	(320,325)	(323,692)	(352,509)
Other comprehensive loss before reclassifications	(7,654)	19,694	(129,953)
Other comprehensive income (loss), net of tax	3,367	28,817	(111,503)
Amounts reclassified from accumulated other comprehensive loss	11,021	9,123	18,450
Sale of subsidiary stock to noncontrolling interests	0	0	2,517
Net current period other comprehensive loss	3,367	28,817	(111,503)
Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive (Loss) Income	(2,913)	(2,164)	(3,446)
Other comprehensive loss before reclassifications	(749)	1,282	(1,188)
Other comprehensive income (loss), net of tax	(749)	1,282	(1,188)
AOCI Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive (Loss) Income	(2,913)	(2,164)	(3,446)
Other comprehensive loss before reclassifications	(749)	1,282	(1,188)
Other comprehensive income (loss), net of tax	(749)	1,282	(1,188)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Rate Swap [Member] | Derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest Income (Expense), Net	$ 2,265	$ 2,180	$ 2,099