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Shareholders' Equity (Common Stock Issued With The Exercise Of Stock Options) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Stockholders' Equity Note [Abstract] |  |
Shares issued (in actual number of shares) | 22,396 | 419,069
Proceeds from the exercise of stock options | $ 0.9 | $ 21.2
Average exercise price per share (in dollars per share) | $ 38.21 | $ 50.57

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