Annual report pursuant to Section 13 and 15(d)

Dividends (Narrative) (Details)

v3.6.0.2
Dividends (Narrative) (Details)
$ / shares in Units, $ in Millions
9 Months Ended 12 Months Ended 24 Months Ended
Feb. 06, 2013
item
$ / shares
Sep. 30, 2016
item
Sep. 30, 2014
USD ($)
May 07, 2014
item
$ / shares
Sep. 30, 2013
USD ($)
Feb. 09, 2012
item
$ / shares
Dividends [Abstract]            
Number of dividends paid | item 4 18   5   9
Dividends payable, amount per share | $ / shares $ 0.06     $ 0.07   $ 0.05
Cumulative dividends paid     $ 29.4      
Payments of dividends     $ 6.1   $ 7.5