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Acquisitions and Dispositions, Disposition of Two Coatings Facilities (Details)
$ in Millions
1 Months Ended 12 Months Ended
Sep. 30, 2023
facility
Mar. 31, 2025
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Disposition of Two Coatings Facilities [Abstract]        
Number of coatings facilities sold | facility 2      
Gain on sale of businesses   $ 0.0 $ 4.0 $ 0.0
Two Coatings Facilities [Member]        
Disposition of Two Coatings Facilities [Abstract]        
Number of coatings facilities sold | facility 2      
Net sales of disposed businesses       $ 6.4
Goodwill attributable to disposed businesses written off     0.7  
Gain on sale of businesses     $ 0.1