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Earnings Per Share (Table)
6 Months Ended
Mar. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted Basic and diluted earnings per share for the three and six months ended March 31, 2021 and 2020 are calculated as follows:
 Three Months Ended March 31Six Months Ended March 31
 2021202020212020
 (In thousands, except per share amounts)
Basic Earnings Per Share
Net income$296,754 $239,646 $514,432 $418,319 
Less: Income allocated to participating securities
199 178 350 314 
Income available to common shareholders
$296,555 $239,468 $514,082 $418,005 
Basic weighted average shares outstanding
129,161 122,916 128,098 122,015 
Net income per share — Basic
$2.30 $1.95 $4.01 $3.43 
Diluted Earnings Per Share
Income available to common shareholders$296,555 $239,468 $514,082 $418,005 
Effect of dilutive shares
— — — — 
Income available to common shareholders
$296,555 $239,468 $514,082 $418,005 
Basic weighted average shares outstanding
129,161 122,916 128,098 122,015 
Dilutive shares81 164 
Diluted weighted average shares outstanding
129,164 122,997 128,100 122,179 
Net income per share - Diluted
$2.30 $1.95 $4.01 $3.42