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Share-Based Compensation Plans (Tables)	12 Months Ended
Share-Based Compensation Plans (Tables)	Dec. 31, 2022
Share-Based Compensation Plans [Abstract]
Company's Shareholder Approved Plans	Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in millions) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2022 49,028 $ 88.52 Granted - - Exercised 49,028 88.52 Forfeited/Cancelled/Expired – - Outstanding at December 31, 2022 – - - $ - . Exercisable at December 31, 2022 – - - $ - Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in millions; Shares in whole amounts) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2021 116,871 $ 87.87 Granted - - Exercised 67,843 87.39 Forfeited/Cancelled/Expired - - Outstanding at December 31, 2021 49,028 88.52 0.2 $ 9 . Exercisable at December 31, 2021 49,028 88.52 0.2 $ 9 Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in millions; Shares in whole amounts) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2020 170,704 $ 87.18 Granted - - Exercised 53,833 85.69 Forfeited/Cancelled/Expired - - Outstanding at December 31, 2020 116,871 87.87 0.7 $ 17 . Exercisable at December 31, 2020 116,871 87.87 0.7 $ 17
Summary Of Company's Non-Vested Shares And Changes	Years Ended December 31, 2022 2021 2020 Weighted- Weighted- Weighted- Average Average Average Grant Date Grant Date Grant Date Restricted (non-vested) Shares Shares Fair Value Shares Fair Value Shares Fair Value Outstanding at January 1, 496,094 $ 247.76 483,427 $ 246.60 495,137 $ 228.02 Granted 203,598 300.38 213,901 243.51 200,929 269.86 Vested 162,579 246.41 158,735 238.67 175,413 220.88 Forfeited 57,483 262.28 42,499 247.02 37,226 246.20 Outstanding at December 31, 479,630 268.82 496,094 247.76 483,427 246.60
Company's Non-Vested Performance Share Unit Awards	Years Ended December 31, 2022 2021 2020 Weighted- Weighted- Weighted- Average Average Average Grant Date Grant Date Grant Date Performance Share Unit Awards Shares Fair Value Shares Fair Value Shares Fair Value Outstanding at January 1, 50,495 $ - 38,891 $ - 34,850 $ - Granted 18,340 301.54 22,205 242.24 16,120 277.15 Increase/(Decrease) on vesting units due to performance 3,028 - (800) - (2,227) - Vested 15,919 274.37 9,801 242.24 6,157 277.15 Forfeited 1,083 - - - 3,695 - Outstanding at December 31, 54,861 - 50,495 - 38,891 -