Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Narrative (Details)

v3.20.2
Shareholders' Equity - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Class of Stock [Line Items]        
Cash dividends paid on common stock     $ 47.6 $ 39.4
Treasury Stock, Value, Acquired, Cost Method     $ (371.3)  
Treasury Stock        
Class of Stock [Line Items]        
Treasury Stock, Shares, Acquired     0.0  
Treasury Stock, Value, Acquired, Cost Method     $ 0.0  
Common stock, shares issued 0.0 0.0 0.1 (0.3)