Business realignment and acquisition integration charges - Business segment information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022 USD ($) employee	Mar. 31, 2021 USD ($) employee	Mar. 31, 2022 USD ($) employee	Mar. 31, 2021 USD ($) employee
Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Business realignment charges	$ 0	$ 156	$ 0	$ 954
Number of positions eliminated (employees) | employee	0	1	0	19
Segment Reconciling Items
Restructuring Cost and Reserve [Line Items]
Business realignment charges	$ 63	$ 1	$ 63	$ 1,226
Diversified Industrial | Operating Segments
Restructuring Cost and Reserve [Line Items]
Business realignment charges	$ 2,771	$ 4,139	$ 8,835	$ 31,247
Number of positions eliminated (employees) | employee	50	65	133	741
Aerospace Systems | Operating Segments
Restructuring Cost and Reserve [Line Items]
Business realignment charges	$ 318	$ 1,306	$ 913	$ 6,643
Number of positions eliminated (employees) | employee	4	41	9	326