Revenue recognition - Revenues by segment and primary market (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022		Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 5,061,665	$ 4,086,387	[1]	$ 13,969,251	$ 11,673,776	[1]
Aerospace Systems
Disaggregation of Revenue [Line Items]
Revenues from contracts	1,194,560	632,315		3,076,989	1,843,350
Commercial original equipment manufacturer ("OEM") | Aerospace Systems
Disaggregation of Revenue [Line Items]
Revenues from contracts	398,502	226,976		1,045,850	649,631
Commercial aftermarket | Aerospace Systems
Disaggregation of Revenue [Line Items]
Revenues from contracts	381,883	128,486		938,129	367,530
Military OEM | Aerospace Systems
Disaggregation of Revenue [Line Items]
Revenues from contracts	244,451	176,242		649,179	531,348
Military aftermarket | Aerospace Systems
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 169,724	$ 100,611		$ 443,831	$ 294,841

[1] *Prior period amounts have been reclassified to reflect the income statement reclassification as described in Note 1.