Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Share-Based Compensation - Schedule of stock-based compensation costs (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Compensation Related Costs [Abstract]        
Share-based compensation costs $ 3.9 $ 3.9 $ 5.8 $ 6.2
Less impact of income tax benefit 0.9 1.0 1.3 1.6
Share-based compensation costs, net of tax $ 3.0 $ 2.9 $ 4.5 $ 4.6