Equity - Changes in accumulated other comprehensive income (loss) in shareholders' equity by component (Details) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 10,338,279	$ 8,859,920
Ending balance	11,600,421	9,793,165
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(962,044)	(1,149,071)
Other comprehensive income before reclassifications	(119,600)	146,173
Amounts reclassified from accumulated other comprehensive (loss)	0	0
Ending balance	(1,081,644)	(1,002,898)
Retirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(330,828)	(394,127)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive (loss)	4,098	8,397
Ending balance	(326,730)	(385,730)
Accumulated Other Comprehensive (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,292,872)	(1,543,198)
Other comprehensive income before reclassifications	(119,600)	146,173
Amounts reclassified from accumulated other comprehensive (loss)	4,098	8,397
Ending balance	$ (1,408,374)	$ (1,388,628)