Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Narrative (Details)

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Shareholders' Equity - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Class of Stock [Line Items]    
Cash dividends paid on common stock $ 12.7 $ 12.6
Shares repurchased 106,000  
Amount of shares repurchased $ 3.0 $ 6.8
Common stock, shares issued 113,000  
Treasury Stock    
Class of Stock [Line Items]    
Common stock, shares issued 217,000