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Share-Based Payment Arrangements (Summary of Nonvested Restricted and Performance Shares) (Details) - Restricted and Performance Shares [Member]
3 Months Ended
Mar. 31, 2022
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Shares, Nonvested at Beginning | shares 1,453,085
Number of Shares, Granted | shares 505,735
Number of Shares, Vested | shares (81,592)
Number of Shares, Forfeited | shares (64,180)
Number of Shares, Nonvested at Ending | shares 1,813,048
Weighted Average Grant Date Fair Value, Nonvested at Beginning | $ / shares $ 34.58
Weighted Average Grant Date Fair Value, Granted | $ / shares 52.77
Weighted Average Grant Date Fair Value, Vested | $ / shares 34.74
Weighted Average Grant Date Fair Value, Forfeited | $ / shares 33.14
Weighted Average Grant Date Fair Value, Nonvested at Ending | $ / shares $ 39.70