Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Narrative (Details)

v3.6.0.2
Shareholders' Equity - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Class of Stock [Line Items]    
Cash dividends paid on common stock $ 13.0 $ 12.7
Amount of shares repurchased $ 0.0 $ 3.0
Common stock, shares issued 616,000  
Treasury Stock    
Class of Stock [Line Items]    
Common stock, shares issued 526,000