Revenue recognition - Revenues by segment and primary market (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 4,903,984	$ 4,847,488
Aerospace Systems
Disaggregation of Revenue [Line Items]
Revenues from contracts	1,447,826	1,228,960
Aerospace Systems | Commercial original equipment manufacturer ("OEM")
Disaggregation of Revenue [Line Items]
Revenues from contracts	433,235	418,616
Aerospace Systems | Commercial aftermarket
Disaggregation of Revenue [Line Items]
Revenues from contracts	520,829	391,206
Aerospace Systems | Defense OEM
Disaggregation of Revenue [Line Items]
Revenues from contracts	262,291	263,065
Aerospace Systems | Defense aftermarket
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 231,471	$ 156,073