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Earnings Per Common Share (Tables)
12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted A reconciliation of the numerators and denominators of the basic and diluted EPS calculations follows.
Years ended December 31, (amounts in thousands, except per share data)202220212020
Numerator:
Net income$469,014 $1,160,513 $880,690 
Preferred stock dividends9,029 4,736 9,734 
Net income attributable to SLM Corporation common stock$459,985 $1,155,777 $870,956 
Denominator:
Weighted average shares used to compute basic EPS258,439 314,993 383,705 
Effect of dilutive securities:
Dilutive effect of stock options, restricted stock, restricted stock units, performance stock units, and Employee Stock Purchase Plan (“ESPP”) (1)(2)
3,064 4,919 3,490 
Weighted average shares used to compute diluted EPS261,503 319,912 387,195 
Basic earnings per common share$1.78 $3.67 $2.27 
Diluted earnings per common share$1.76 $3.61 $2.25 

    

(1)     Includes the potential dilutive effect of additional common shares that are issuable upon exercise of outstanding stock options, restricted stock, restricted stock units, performance stock units, and the outstanding commitment to issue shares under the ESPP, determined by the treasury stock method.
(2)     For the years ended December 31, 2022, 2021, and 2020, securities covering approximately 1 million shares, 1 million shares, and no shares, respectively, were outstanding but not included in the computation of diluted earnings per share because they were anti-dilutive.