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Note 4 - Earnings Per Common Share (Tables)
12 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
  

2022

  

2021

  

2020

 

Basic Earnings Per Common Share:

            

Net Income

 $220.8  $271.7  $88.6 

Less: Provision for preferred dividends

  14.8   14.8   14.8 

Income allocated to participating securities

  0.3   0.4   0.1 

Net Income Available to Common Shareholders

 $205.7  $256.5  $73.7 

Weighted Average Common Shares Outstanding (in millions)

  52.0   51.6   51.2 

Basic Earnings Per Share of Common Stock

 $3.96  $4.97  $1.44 

Diluted Earnings per Common Share:

            

Net Income

 $220.8  $271.7  $88.6 

Less: Provision for preferred dividends

  14.8   14.8   14.8 

Income allocated to participating securities

  0.3   0.4   0.1 

Net Income Available to Common Shareholders

 $205.7  $256.5  $73.7 

Weighted Average Common Shares Outstanding (in millions)

  52.0   51.6   51.2 

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

  0.1   0.1   0.1 

Weighted Average Diluted Common Shares (in millions)

  52.1   51.7   51.3 

Diluted Earnings Per Share of Common Stock

 $3.95  $4.96  $1.44 
             

* Calculation excludes certain outstanding common 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

  0.1   0.1   0.1