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EARNINGS PER COMMON SHARE
9 Months Ended
Jun. 30, 2018
Earnings Per Share [Abstract]  
EARNINGS PER COMMON SHARE
EARNINGS PER COMMON SHARE
Spire
Three Months Ended June 30,
 
Nine Months Ended June 30,
 
2018
 
2017
 
2018
 
2017
Basic Earnings Per Share:
 
 
 
 
 
 
 
Net Income
$
25.9

 
$
21.7

 
$
240.1

 
$
174.9

Less: Income allocated to participating securities
0.1

 
0.1

 
0.5

 
0.4

Net Income Available to Common Shareholders
$
25.8

 
$
21.6

 
$
239.6

 
$
174.5

Weighted Average Shares Outstanding (in millions)
49.6

 
48.1

 
48.7

 
46.4

Basic Earnings Per Share of Common Stock
$
0.52

 
$
0.45

 
$
4.92

 
$
3.76

 
 
 
 
 
 
 
 
Diluted Earnings Per Share:
 
 
 
 
 
 
 
Net Income
$
25.9

 
$
21.7

 
$
240.1

 
$
174.9

Less: Income allocated to participating securities
0.1

 
0.1

 
0.5

 
0.4

Net Income Available to Common Shareholders
$
25.8

 
$
21.6

 
$
239.6

 
$
174.5

Weighted Average Shares Outstanding (in millions)
49.6

 
48.1

 
48.7

 
46.4

Dilutive Effect of Restricted Stock and Restricted Stock Units (in millions)*
0.1

 
0.1

 
0.1

 
0.2

Weighted Average Diluted Shares (in millions)
49.7

 
48.2

 
48.8

 
46.6

Diluted Earnings Per Share of Common Stock
$
0.52

 
$
0.45

 
$
4.91

 
$
3.75

 
 
 
 
 
 
 
 
* Calculation excludes certain outstanding shares (shown in millions by period at the right) attributable to stock units subject to performance or market conditions and restricted stock, which could have a dilutive effect in the future
0.4

 
0.4

 
0.4

 
0.4