Equity - Reclassifications out of accumulated other comprehensive income (loss) in shareholders' equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income, net	$ 78,455	$ 19,624
Income before income taxes	820,435	503,345
Tax benefit	(169,363)	(115,308)
Net income	651,072	388,037
Income (Expense) Reclassified from Accumulated Other Comprehensive (Loss) | Amortization of prior service cost and initial net obligation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income, net	(302)	(210)
Income (Expense) Reclassified from Accumulated Other Comprehensive (Loss) | Recognized actuarial loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other income, net	(792)	(6,110)
Income (Expense) Reclassified from Accumulated Other Comprehensive (Loss) | Retirement benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income before income taxes	(1,094)	(6,320)
Tax benefit	276	1,549
Net income	$ (818)	$ (4,771)