Annual report pursuant to Section 13 and 15(d)

Business and summary of significant accounting policies (Details 4)

v2.4.0.8
Business and summary of significant accounting policies (Details 4) (USD $)
In Millions, unless otherwise specified
12 Months Ended 36 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2012
Maximum
Long Lived Assets Excluding Goodwill [Abstract]      
Impairment of Long-Lived Assets Held-for-use   $ 0  
Reclassification      
Profit (loss) on immaterial discontinued operations excluded from statement of operations $ (0.4)   $ 0.1