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Basis of Presentation and Accounting Policies (Tables)
3 Months Ended
Dec. 31, 2013
Accounting Policies [Abstract]  
Reconciled Basic and Diluted EPS
The following table reconciles basic and diluted earnings per share (EPS) amounts (in millions, except per share amounts):
 
Three Months Ended
December 31,
 
2013
 
2012
Net income
$
198.1

 
$
161.4

Less: Allocation to participating securities
(0.3
)
 
(0.2
)
Net income available to common shareowners
$
197.8

 
$
161.2

Basic weighted average outstanding shares
138.6

 
139.3

Effect of dilutive securities
 
 
 
Stock options
1.6

 
1.6

Performance shares
0.2

 
0.3

Diluted weighted average outstanding shares
140.4

 
141.2

Earnings per share:
 
 
 
Basic
$
1.43

 
$
1.16

Diluted
$
1.41

 
$
1.14