Restructuring and Asset Impairment Charges - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring and asset impairment charges		$ 3.6	$ 16.9	$ 0.0
Impairment of intangible assets			$ 7.0
Impairment Of Intangible Asset Finite Lived, Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag			true
Restructuring charges excluding noncash impairments	$ 1.1	$ 1.1	$ 1.1
Performance Engineered Products | Business Exit, Oil And Gas
Restructuring Cost and Reserve [Line Items]
Tangible asset impairment charges			15.8
Impairment of intangible assets			7.0
Performance Engineered Products | Business Exit, Oil And Gas | Property, Plant and Equipment
Restructuring Cost and Reserve [Line Items]
Tangible asset impairment charges			$ 8.8