Equity - Changes in accumulated other comprehensive income (loss) in shareholders' equity by component (Details) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 12,080,893	$ 10,338,279
Ending balance	13,127,061	11,312,379
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	(103,978)	48,927
Amounts reclassified from accumulated other comprehensive (loss)	0	0
Ending balance	(1,233,975)	(913,117)
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)	6,861	2,729
Ending balance	(301,154)	(328,099)
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	(103,978)	48,927
Amounts reclassified from accumulated other comprehensive (loss)	6,861	2,729
Ending balance	$ (1,535,129)	$ (1,241,216)