Equity - Changes in accumulated other comprehensive income (loss) in shareholders' equity by component (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2018
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 5,968,152	$ 5,865,493
Impact of adoption of ASU 2016-01			$ (251)
Ending balance	6,102,792	6,107,106
Foreign Currency Translation Adjustment and Other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,011,656)	(943,477)
Impact of adoption of ASU 2016-01			(1,734)
Other comprehensive loss before reclassifications	(102,572)	(38,614)
Amounts reclassified from accumulated other comprehensive (loss)	0	3,578
Ending balance	(1,114,228)	(980,247)
Retirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,047,392)	(819,609)
Impact of adoption of ASU 2016-01			0
Other comprehensive loss before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive (loss)	31,026	23,873
Ending balance	(1,016,366)	(795,736)
Accumulated Other Comprehensive (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(2,059,048)	(1,763,086)
Impact of adoption of ASU 2016-01			$ (1,734)
Other comprehensive loss before reclassifications	(102,572)	(38,614)
Amounts reclassified from accumulated other comprehensive (loss)	31,026	27,451
Ending balance	$ (2,130,594)	$ (1,775,983)