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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Declared dividends per common share attributable to SLM Corporation (in dollars per share) | $ 0.03 | $ 0 | $ 0.09 | $ 0.09
Series B Preferred Stock |  |  |  |
Preferred stock dividend (in dollars per share) | $ 0.46 | $ 0.51 | $ 1.42 | $ 2.00

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