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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Jun. 30, 2019
Jun. 30, 2018
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts $ 3.7 $ 2.6
Common stock, authorized shares (in shares) 100,000,000 100,000,000
Common stock, issued shares (in shares) 55,808,743 55,712,229
Common stock, outstanding shares (in shares) 47,470,363 47,191,744
Common stock in treasury, shares (in shares) 8,338,380 8,520,485