Equity - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 5,519,210	$ 4,530,978	$ 5,267,346	$ 4,578,678
Amounts reclassified from accumulated other comprehensive (loss)	25,218	35,512	80,266	105,847
Ending balance	5,876,283	4,747,726	5,876,283	4,747,726
Foreign Currency Translation Adjustment and Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(925,342)	(844,121)
Other comprehensive income (loss) before reclassifications			194,900	(169,883)
Amounts reclassified from accumulated other comprehensive (loss)			0	(1,032)
Ending balance	(730,442)	(1,015,036)	(730,442)	(1,015,036)
Retirement Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(998,862)	(1,383,644)
Other comprehensive income (loss) before reclassifications			0	0
Amounts reclassified from accumulated other comprehensive (loss)			80,266	105,847
Ending balance	(918,596)	(1,277,797)	(918,596)	(1,277,797)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(1,924,204)	(2,227,765)
Other comprehensive income (loss) before reclassifications			194,900	(169,883)
Amounts reclassified from accumulated other comprehensive (loss)			80,266	104,815
Ending balance	$ (1,649,038)	$ (2,292,833)	$ (1,649,038)	$ (2,292,833)