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Income Taxes - (Details) - USD ($) $ in Millions | 3 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Effective income tax rate excluding certain discrete tax items (as a percent) | 27.50% | 27.90%
ASU 2016-09 |  |
Discrete tax benefit for equity-based compensation | $ 0.3 | $ 6.2
Effective income tax rate (as a percent) | 25.30% | (2.90%)

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