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Earnings Per Share
 12 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Earnings Per Share
Note 20 — Earnings Per Share
The following table sets forth the computation of basic and diluted earnings per share:
 
Year Ended September 30,
 
  
2019
 
  
2018
 
  
2017
 
Numerator:
   
     
     
 
Net income
  $
479,446
    $
354,396
    $
436,826
 
Net income and dividends attributable to participating restricted shares
   
(3,295
 )    
(2,650
 )    
(3,517
 )
                         
Numerator for basic earnings per common share
  $
476,151
    $
351,746
    $
433,309
 
                         
Undistributed income allocated to participating restricted shares
   
2,252
     
1,617
     
2,512
 
Undistributed income reallocated to participating restricted shares
   
(2,240
 )    
(1,603
 )    
(2,488
 )
                         
Numerator for diluted earnings per common share
  $
476,163
    $
351,760
    $
433,333
 
                         
Denominator:
   
     
     
 
Weighted average number of shares outstanding — basic
   
137,418
     
142,422
     
146,017
 
Weighted average number of participating restricted shares
   
(944
 )    
(1,065
 )    
(1,176
 )
                         
Weighted average number of common shares — basic
   
136,474
     
141,357
     
144,841
 
                         
Effect of dilutive stock options granted
   
691
     
1,282
     
1,414
 
Weighted average number of common shares — diluted
   
137,165
     
142,639
     
146,255
 
                         
Basic earnings per common share
  $
3.49
    $
2.49
    $
2.99
 
                         
Diluted earnings per common share
  $
3.47
    $
2.47
    $
2.96
 
                         
For the fiscal years ended September 30, 2019, 2018 and 2017, 3,547, 1,357 and 1,281 shares, respectively, on a weighted average basis, were attributable to antidilutive outstanding stock options and therefore were not included in the calculation of diluted earnings per share.