Equity - Changes in accumulated other comprehensive income (loss) in shareholders' equity by component (Details) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 12,080,893	$ 10,338,279
Ending balance	13,399,825	11,600,421
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,129,997)	(962,044)
Other comprehensive income (loss) before reclassifications	63,431	(119,600)
Amounts reclassified from accumulated other comprehensive (loss)	0	0
Ending balance	(1,066,566)	(1,081,644)
Retirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(308,015)	(330,828)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive (loss)	10,197	4,098
Ending balance	(297,818)	(326,730)
Accumulated Other Comprehensive (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,438,012)	(1,292,872)
Other comprehensive income (loss) before reclassifications	63,431	(119,600)
Amounts reclassified from accumulated other comprehensive (loss)	10,197	4,098
Ending balance	$ (1,364,384)	$ (1,408,374)