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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Jun. 30, 2020
Income Tax Disclosure [Abstract]          
Income tax expense (benefit), measurement period     $ (0.5)    
Effective income tax rate 27.10% 32.90% 28.30% 28.00%  
Gross unrecognized tax benefits $ 1.2   $ 1.2   $ 1.2
Unrecognized tax benefits that would impact effective tax rate if recognized 1.0   1.0    
Income tax penalties and interest accrued $ 1.2   $ 1.2   $ 1.1