Business realignment - Schedule of Business Realignment Charges and Workforce Reductions by Business Segment (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2025 USD ($) employee	Dec. 31, 2024 USD ($) employee	Dec. 31, 2025 USD ($) employee	Dec. 31, 2024 USD ($) employee
Operating Segments | Diversified Industrial
Restructuring Cost and Reserve [Line Items]
Business realignment charges	$ 13,000	$ 20,000	$ 27,000	$ 29,000
Work force reduction (in employees) | employee	409	393	599	720
Operating Segments | Aerospace Systems
Restructuring Cost and Reserve [Line Items]
Business realignment charges	$ 0	$ 0	$ 1,000	$ 0
Work force reduction (in employees) | employee	2	16	27	16
Corporate general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Business realignment charges	$ 0	$ 1,000	$ 0	$ 1,000
Work force reduction (in employees) | employee	0	14	0	14
Other expense, net
Restructuring Cost and Reserve [Line Items]
Business realignment charges	$ 0	$ 0	$ 0	$ 1,000