Business segment information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2023 USD ($) technology segment	Dec. 31, 2022 USD ($)
Segment Reporting [Abstract]
Number of reportable business segments | segment			2
Number of core technologies utilized | technology			8
Segment Reporting Information [Line Items]
Net sales	$ 4,820,947	$ 4,674,811	$ 9,668,435	$ 8,907,586
Operating income	965,544	665,333	1,942,902	1,452,750
Selling, general and administrative expenses	806,802	814,966	1,680,493	1,650,770
Interest expense	129,029	146,931	263,497	264,725
Other (income) expense, net	(31,650)	1,659	(9,195)	167,937
Income before income taxes	868,165	516,743	1,688,600	1,020,088
North America
Segment Reporting Information [Line Items]
Net sales	3,234,158	3,079,738	6,527,249	5,914,658
Diversified Industrial
Segment Reporting Information [Line Items]
Net sales	3,514,473	3,538,384	7,133,001	7,025,157
Aerospace Systems
Segment Reporting Information [Line Items]
Net sales	1,306,474	1,136,427	2,535,434	1,882,429
Operating Segments
Segment Reporting Information [Line Items]
Net sales	4,820,947	4,674,811	9,668,435	8,907,586
Operating income	1,015,446	714,234	2,048,460	1,553,311
Operating Segments | Diversified Industrial | North America
Segment Reporting Information [Line Items]
Net sales	2,110,203	2,140,685	4,340,109	4,272,445
Operating income	461,850	419,921	967,903	872,907
Operating Segments | Diversified Industrial | International
Segment Reporting Information [Line Items]
Net sales	1,404,270	1,397,699	2,792,892	2,752,712
Operating income	290,484	285,520	591,185	579,460
Operating Segments | Aerospace Systems
Segment Reporting Information [Line Items]
Net sales	1,306,474	1,136,427	2,535,434	1,882,429
Operating income	263,112	8,793	489,372	100,944
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Selling, general and administrative expenses	$ 49,902	$ 48,901	$ 105,558	$ 100,561