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Income Taxes
9 Months Ended
Jun. 30, 2020
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes 
The effective tax rate for the nine months ended June 30, 2020 was 25.9% as compared to 30.3% for the prior year comparative period.

The current year rate includes the unfavorable impact of the Coronavirus Aid, Relief and Economic Security (CARES) Act of $5.1, which was signed into law on March 27, 2020 and provides, among other things, increased interest deduction limitations to companies which can decrease overall cash taxes paid.
The prior year rate includes $0.7 for the one-time impact of the December 2017 Tax Cuts and Jobs Act (2017 tax reform) and the impact of disallowed transaction costs resulting from the acquisitions, which drove a higher tax rate in the prior year.