Equity - Significant reclassifications out of accumulated other comprehensive (loss) in shareholders' equity (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (income) expense, net	$ 276,888	$ (184,167)	$ (944,881)
Income before income taxes	3,594,603	2,679,664	1,614,226
Tax benefit	(749,667)	(596,128)	(298,040)
Net income	2,844,936	2,083,536	$ 1,316,186
Reclassification out of Accumulated Other Comprehensive Income | Retirement benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income before income taxes	(7,522)	(14,024)
Tax benefit	1,926	3,897
Net income	(5,596)	(10,127)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of prior service cost and initial net obligation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (income) expense, net	(1,277)	(931)
Reclassification out of Accumulated Other Comprehensive Income | Recognized actuarial loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (income) expense, net	$ (6,245)	(15,573)
Reclassification out of Accumulated Other Comprehensive Income | Divestiture activity
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other (income) expense, net		$ 2,480