Restructuring Charges and Asset Impairment Charges - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges	$ 0.0	$ 0.0	$ 16.6
Impairment Of Intangible Asset Finite Lived, Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag			true
Business Exit, Oil And Gas
Restructuring Cost and Reserve [Line Items]
Lease right of use assets			$ 1.3
Other non-cash charges			0.4
Business Exit, Oil And Gas | Amega West
Restructuring Cost and Reserve [Line Items]
Tangible asset impairment charges			2.0
Performance Engineered Products | Business Exit, Oil And Gas
Restructuring Cost and Reserve [Line Items]
Tangible asset impairment charges			14.2
Impairment of intangible assets			4.3
Business exit costs and personnel costs			0.4
Property, Plant and Equipment | Performance Engineered Products | Business Exit, Oil And Gas
Restructuring Cost and Reserve [Line Items]
Tangible asset impairment charges			$ 8.2