Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation (Details)

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Share-Based Compensation (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Share-Based Compensation.    
Share-based compensation cost $ 1.7 $ 4.5
Less impact of income tax 0.6 1.6
Share-based compensation, net of tax $ 1.1 $ 2.9
Time-Based stock awards
   
Stock based compensation    
Granted (in shares) 22,891  
Weighted average fair value of equity instruments other than options (in dollars per share) $ 28.39  
Performance-based stock awards (maximum that can be earned)
   
Stock based compensation    
Granted (in shares) 575,782  
Weighted average fair value of equity instruments other than options (in dollars per share) $ 28.49  
Shares granted included in performance-based stock awards whose payout level is based upon the Company's total shareholder return 185,278  
Performance measurement period used to determined shares granted included in performance-based stock awards 3 years  
Stock options
   
Stock based compensation    
Granted (in shares) 449,706  
Weighted average exercise price (in dollars per share) $ 28.16  
Weighted average fair value of options granted (in dollars per share) $ 6.95