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Restructuring and Asset Impairment Charges (Tables)
 3 Months Ended
Sep. 30, 2024
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs
The reserve balances and activity for restructuring charges at September 30, 2024 and June 30, 2024 were as follows:

($ in millions)September 30, 2024June 30, 2024
Reserve balance at beginning of fiscal year$1.1 $— 
Restructuring charges excluding noncash impairments1.1 1.1 
Cash payments(0.3)— 
Reserve balance at end of period$1.9 $1.1