Goodwill and intangible assets - Changes in carrying amount of goodwill (Details) $ in Thousands	9 Months Ended
	Mar. 31, 2024 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 10,628,594
Acquisition	10,891
Divestitures	(25,387)
Foreign currency translation	(34,791)
Ending balance	10,579,307
Diversified Industrial Segment
Goodwill [Roll Forward]
Beginning balance	7,682,755
Acquisition	1,113
Divestitures	(25,387)
Foreign currency translation	(29,859)
Ending balance	7,628,622
Aerospace Systems Segment
Goodwill [Roll Forward]
Beginning balance	2,945,839
Acquisition	9,778
Divestitures	0
Foreign currency translation	(4,932)
Ending balance	$ 2,950,685