Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Schedule of stock-based compensation costs (Details)

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Share-Based Compensation - Schedule of stock-based compensation costs (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Compensation Related Costs [Abstract]    
Share-based compensation costs $ 2.3 $ 1.9
Less impact of income tax benefit 0.5 0.4
Share-based compensation costs, net of tax $ 1.8 $ 1.5