Annual report pursuant to Section 13 and 15(d)

Dividends (Details)

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Dividends (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
9 Months Ended 12 Months Ended 24 Months Ended
Feb. 06, 2013
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Sep. 30, 2014
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May 07, 2014
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Sep. 30, 2013
Sep. 30, 2012
Feb. 09, 2012
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Dividends [Abstract]            
Number of dividends paid 4 18 5     9
Dividends payable, amount per share (in Dollars per share) $ 0.06   $ 0.07     $ 0.05
Cumulative dividends paid   $ 29.4        
Payments of dividends   $ 6.1   $ 7.5 $ 6.2