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Share-Based Compensation Arrangements	3 Months Ended
Share-Based Compensation Arrangements	Mar. 31, 2022
Share-based Payment Arrangement [Abstract]
Share-Based Compensation Arrangements	Share-Based Compensation Arrangements During the three months ended March 31, 2022, the Corporation granted performance share unit and restricted stock unit awards. Performance share units were granted to certain key employees providing them the opportunity to earn shares of common stock over a 3-year performance period. The weighted average fair value of the performance share units was $59.31. The number of shares to be vested will be contingent upon the Corporation’s attainment of certain performance measures as detailed in the performance share unit award agreements. Based on the most recent performance assumption available, it is estimated that 42,728 shares will be earned. In addition, the Corporation granted to certain key employees 3,157 restricted stock units with 3-year cliff vesting. The weighted average grant date fair value of the restricted stock units was $59.31.