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Restructuring and Asset Impairment Charges (Tables)
6 Months Ended
Dec. 31, 2020
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs
The reserve balances and activity for restructuring charges at December 31, 2020 were as follows:

($ in millions)Reserve Balance
Reserve balance at June 30, 2020$9.5 
Restructuring charges1.3 
Cash payments(8.2)
Reserve balance at December 31, 2020$2.6