Equity - Changes in accumulated other comprehensive income (loss) in shareholders' equity by component (Details) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 6,128,529	$ 5,968,152
Ending balance	7,407,929	6,307,427
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,193,937)	(1,011,656)
Other comprehensive income (loss) before reclassifications	281,726	(232,981)
Amounts reclassified from accumulated other comprehensive (loss)	0	0
Ending balance	(912,211)	(1,244,637)
Retirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,364,938)	(1,047,392)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive (loss)	120,859	96,567
Ending balance	(1,244,079)	(950,825)
Accumulated Other Comprehensive (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(2,558,875)	(2,059,048)
Other comprehensive income (loss) before reclassifications	281,726	(232,981)
Amounts reclassified from accumulated other comprehensive (loss)	120,859	96,567
Ending balance	$ (2,156,290)	$ (2,195,462)