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Consolidated Statement of Changes in Shareholders' Equity (Parenthetical) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Stock option exercises/deferred stock unit conversions, shares | 987,758 | 408,563 | 399,224
Stock Redeemed or Called During Period, Shares |  | 6,000,000 |
Stock Issued During Period, Shares, New Issues |  | 150,000 |
Treasury Stock, Shares, Acquired | 31,317 | 206,951 | 716,062
Stock Issued During Period, Shares, Treasury Stock Reissued | 18,555 | 140,264 |
Preferred Stock, Dividends Per Share, Declared | $ 47.71 | $ 0.34 | $ 1.34
Preferred stock, Dividends equivalent per depositary share, Declared | 1.19 |  |
Common Stock, Dividends, Per Share, Cash Paid | $ 2.94 | $ 2.85 | $ 2.80

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