Business segment information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2024 USD ($) technology segment	Dec. 31, 2023 USD ($)
Segment Reporting [Abstract]
Number of reportable business segments | segment			2
Number of core technologies utilized | technology			8
Segment Reporting Information [Line Items]
Net sales	$ 4,742,593	$ 4,820,947	$ 9,646,577	$ 9,668,435
Operating income	992,482	965,544	2,050,220	1,942,902
Selling, general and administrative expenses	782,421	806,802	1,631,210	1,680,493
Interest expense	100,802	129,029	213,893	263,497
Other income, net	(274,177)	(31,650)	(204,716)	(9,195)
Income before income taxes	1,165,857	868,165	2,041,043	1,688,600
Diversified Industrial
Segment Reporting Information [Line Items]
Net sales	3,252,806	3,514,473	6,708,964	7,133,001
Aerospace Systems
Segment Reporting Information [Line Items]
Net sales	1,489,787	1,306,474	2,937,613	2,535,434
Operating Segments
Segment Reporting Information [Line Items]
Net sales	4,742,593	4,820,947	9,646,577	9,668,435
Operating income	1,048,746	1,015,446	2,155,278	2,048,460
Operating Segments | Diversified Industrial
Segment Reporting Information [Line Items]
Net sales	3,252,806	3,514,473	6,708,964	7,133,001
Operating income	710,562	752,334	1,494,108	1,559,088
Operating Segments | Aerospace Systems
Segment Reporting Information [Line Items]
Net sales	1,489,787	1,306,474	2,937,613	2,535,434
Operating income	338,184	263,112	661,170	489,372
Segment Reporting, Reconciling Item, Corporate Nonsegment
Segment Reporting Information [Line Items]
Selling, general and administrative expenses	$ 56,264	$ 49,902	$ 105,058	$ 105,558