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Earnings per Share (Tables)
 6 Months Ended
Mar. 31, 2014
Earnings Per Share [Abstract]  
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]
Basic EPS has been computed by dividing net income by the weighted-average number of common shares outstanding. The following is a reconciliation of the numerator and denominator of the diluted net income per share computations for the periods presented below.
 
Three Months Ended March 31,
 
Six Months Ended March 31,
(in millions, except share amounts)
2014
 
2013
 
2014
 
2013
Numerator:
 
 
 
 
 
 
 
Income from continuing operations
$
7.7

 
$
1.7

 
$
10.1

 
$
11.8

Less: Allocation to participating securities
(0.2
)
 
(0.1
)
 
(0.3
)
 
(0.5
)
Income from continuing operations allocated to common stockholders
$
7.5

 
$
1.6

 
$
9.8

 
$
11.3

(Loss) income from discontinued operations
$
(0.2
)
 
$
(0.2
)
 
$
(0.1
)
 
$
3.0

Less: Allocation to participating securities
—

 
—

 
—

 
(0.1
)
(Loss) income from discontinued operations allocated to common stockholders
$
(0.2
)
 
$
(0.2
)
 
$
(0.1
)
 
$
2.9

Diluted net income
$
7.5

 
$
1.5

 
$
10.0

 
$
14.8

Less: Allocation to participating securities
(0.2
)
 
(0.1
)
 
(0.3
)
 
(0.6
)
Diluted net income allocated to common stockholders
$
7.3

 
$
1.4

 
$
9.7

 
$
14.2

Denominator:
 
 
 
 
 
 
 
Weighted average number of:
 
 
 
 
 
 
 
Common shares outstanding
18,609,550


18,380,971

 
18,627,383

 
18,327,517

Dilutive potential common shares outstanding:
 
 
 
 

 

Share-based awards
345,578

 
453,621

 
646,770

 
494,282

Diluted weighted-average shares
18,955,128

 
18,834,592

 
19,274,153

 
18,821,799