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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Common stock dividends per share, declared | $ 1.08 | $ 1.04 | $ 1.00
Series A 3% Preferred Stock [Member] |  |  |
Preferred stock, dividend percentage | 3.00% | 3.00% | 3.00%
Preferred stock dividends per share, declared | $ 3.00 | $ 3.00 | $ 3.00
Series B-1 8.48% Preferred Stock [Member] |  |  |
Preferred stock, dividend percentage | 8.48% | 8.48% | 8.48%
Preferred stock dividends per share, declared | $ 8.48 | $ 8.48 | $ 8.48

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