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Share-Based Compensation Plans - Schedule of activity of stock options and awards of shares and stock units (Details) - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Shares, Beginning Balance 0 20,000 40,000
Weighted Average Price, Beginning Balance (in dollars per share) $ 0 $ 24.48 $ 24.48
Shares, Granted 0 0 0
Weighted Average Price, Granted (in dollars per share) $ 0 $ 0 $ 0
Shares, Expired 0 0 0
Weighted Average Price, Expired (in dollars per share) $ 0 $ 0 $ 0
Shares, Exercised 0 (20,000) (20,000)
Weighted Average Price, Exercised (in dollars per share) $ 0 $ 24.48 $ 24.48
Shares, Ending Balance 0 0 20,000
Weighted Average Price, Ending Balance (in dollars per share) $ 0 $ 0 $ 24.48
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]      
Shares, Beginning Balance 397,918 417,578 476,586
Weighted Average Price, Beginning Balance (in dollars per share) $ 73.16 $ 70.24 $ 63.52
Shares, Granted 129,859 137,771 169,766
Weighted Average Price, Granted (in dollars per share) $ 96.32 $ 81.56 $ 64.34
Shares, Forfeited (2,242) (984) (2,545)
Weighted Average Price, Forfeited (in dollars per share) $ 78.86 $ 79.17 $ 71.88
Shares, Vested (121,067) (156,447) (226,229)
Weighted Average Price, Vested (in dollars per share) $ 77.86 $ 72.72 $ 51.64
Shares, Ending Balance 404,468 397,918 417,578
Weighted Average Price, Ending Balance (in dollars per share) $ 79.16 $ 73.16 $ 70.24