Equity - Changes in accumulated other comprehensive (loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Other Comprehensive Income (Loss) Net of Tax, Period Change [Abstract]
Beginning Balance	$ 4,578,678	$ 5,107,569
Amounts reclassified from accumulated other comprehensive (loss)	142,368	114,009
Ending Balance	5,267,346	4,578,678
Foreign Currency Translation Adjustment and Other
Other Comprehensive Income (Loss) Net of Tax, Period Change [Abstract]
Beginning Balance	(844,121)	(641,018)
Other comprehensive (loss) before reclassifications	(80,189)	(202,444)
Amounts reclassified from accumulated other comprehensive (loss)	(1,032)	(659)
Ending Balance	(925,342)	(844,121)
Retirement Benefit Plans
Other Comprehensive Income (Loss) Net of Tax, Period Change [Abstract]
Beginning Balance	(1,383,644)	(1,097,600)
Other comprehensive (loss) before reclassifications	242,414	(400,053)
Amounts reclassified from accumulated other comprehensive (loss)	142,368	114,009
Ending Balance	(998,862)	(1,383,644)
AOCI Attributable to Parent
Other Comprehensive Income (Loss) Net of Tax, Period Change [Abstract]
Beginning Balance	(2,227,765)	(1,738,618)
Other comprehensive (loss) before reclassifications	162,225	(602,497)
Amounts reclassified from accumulated other comprehensive (loss)	141,336	113,350
Ending Balance	$ (1,924,204)	$ (2,227,765)