Revenue recognition - Revenues by segment and by platform (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 3,497,974	$ 3,472,045	$ 6,832,485	$ 6,951,339
Diversified Industrial Segment
Disaggregation of Revenue [Line Items]
Revenues from contracts	2,762,936	2,855,738	5,466,391	5,770,548
Diversified Industrial Segment | Motion Systems
Disaggregation of Revenue [Line Items]
Revenues from contracts	752,306	856,357	1,519,120	1,715,930
Diversified Industrial Segment | Flow and Process Control
Disaggregation of Revenue [Line Items]
Revenues from contracts	942,249	1,015,200	1,953,604	2,076,264
Diversified Industrial Segment | Filtration and Engineered Materials
Disaggregation of Revenue [Line Items]
Revenues from contracts	1,068,381	984,181	1,993,667	1,978,354
Aerospace Systems Segment
Disaggregation of Revenue [Line Items]
Revenues from contracts	735,038	616,307	1,366,094	1,180,791
Aerospace Systems Segment | Flight Control Actuation
Disaggregation of Revenue [Line Items]
Revenues from contracts	180,423	189,670	353,682	352,606
Aerospace Systems Segment | Fuel, Inerting and Engine Motion Control
Disaggregation of Revenue [Line Items]
Revenues from contracts	159,474	157,262	311,687	301,308
Aerospace Systems Segment | Hydraulics
Disaggregation of Revenue [Line Items]
Revenues from contracts	110,385	108,893	218,760	211,390
Aerospace Systems Segment | Engine Components
Disaggregation of Revenue [Line Items]
Revenues from contracts	179,605	71,647	273,400	136,033
Aerospace Systems Segment | Airframe and Engine Fluid Conveyance
Disaggregation of Revenue [Line Items]
Revenues from contracts	79,123	68,868	163,802	139,072
Aerospace Systems Segment | Other
Disaggregation of Revenue [Line Items]
Revenues from contracts	$ 26,028	$ 19,967	$ 44,763	$ 40,382