Equity - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 5,267,346	$ 4,578,678
Amounts reclassified from accumulated other comprehensive (loss)	26,735	34,162
Ending balance	5,530,659	4,650,589
Foreign Currency Translation Adjustment and Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(925,342)	(844,121)
Other comprehensive income before reclassifications	72,966	8,298
Amounts reclassified from accumulated other comprehensive (loss)	0	(167)
Ending balance	(852,376)	(835,990)
Retirement Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(998,862)	(1,383,644)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive (loss)	26,735	34,162
Ending balance	(972,127)	(1,349,482)
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1,924,204)	(2,227,765)
Other comprehensive income before reclassifications	72,966	8,298
Amounts reclassified from accumulated other comprehensive (loss)	26,735	33,995
Ending balance	$ (1,824,503)	$ (2,185,472)