Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation (Details)

v2.4.0.8
Share-Based Compensation (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Jun. 30, 2013
item
Jun. 30, 2012
Jun. 30, 2013
item
Jun. 30, 2012
Share-Based Compensation        
Share-based compensation costs $ (1.0) $ 0.2 $ 5.0 $ 7.1
Less impact of income tax (0.4) 0.1 1.8 2.6
Share-based compensation costs, net-of-tax $ (0.6) $ 0.1 $ 3.2 $ 4.5
Period of cumulative cash returns and final period net operating profit after tax compared to the performance-based targets for each grant 3 years   3 years  
Number of separate grants 3   3  
Stock options
       
Stock based compensation        
Weighted average exercise price (in dollars per share)     $ 20.78  
Granted (in shares)     508,650  
Weighted average fair value of options granted (in dollars per share)     $ 4.91  
Time-Based stock awards
       
Stock based compensation        
Granted (in shares)     81,780  
Weighted average fair value of equity instruments other than options (in dollars per share)     $ 22.70  
Performance-based stock awards (maximum that can be earned)
       
Stock based compensation        
Granted (in shares)     778,942  
Weighted average fair value of equity instruments other than options (in dollars per share)     $ 20.76