Quarterly report pursuant to Section 13 or 15(d)

Income Tax (Details)

v3.10.0.1
Income Tax (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]        
Effective income tax rate reconciliation, percent 28.90% 30.10% 26.10% 33.30%
Effect of adjustments related to the Tax Cuts And Jobs Act Of 2017, income (decrease) in the effective income tax rate (8.60%)   (9.30%)  
Tax cuts and jobs act of 2017, income tax benefits on earnings per share, diluted $ 0.09   $ 0.32  
Income taxes paid     $ 48.1 $ 65.5