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Share-based Payments (Summary of Share Unit Activity) (Details)
9 Months Ended
Sep. 30, 2024
$ / shares
shares
Performance Share Units (Performance Conditions) | Equity-classified  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Outstanding beginning balance, Shares | shares 415,429
Granted, Shares | shares 161,579
Vested and settled, Shares | shares (114,315)
Forfeited, Shares | shares (15,342)
Outstanding ending balance, Shares | shares 447,351
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Outstanding beginning balance, Weighted average grant date fair value (usd per share) | $ / shares $ 58.35
Granted, Weighted average grant date fair value (usd per share) | $ / shares 75.93
Vested and settled, Weighted average grant date fair value (usd per share) | $ / shares 58.79
Forfeited, Weighted average grant date fair value (usd per share) | $ / shares 58.10
Outstanding ending balance, Weighted average grant date fair value (usd per share) | $ / shares $ 64.59
Performance Share Units (Market Conditions) | Equity-classified  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Outstanding beginning balance, Shares | shares 174,260
Granted, Shares | shares 160,223
Vested and settled, Shares | shares (58,511)
Forfeited, Shares | shares (9,618)
Outstanding ending balance, Shares | shares 266,354
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Outstanding beginning balance, Weighted average grant date fair value (usd per share) | $ / shares $ 74.83
Granted, Weighted average grant date fair value (usd per share) | $ / shares 122.42
Vested and settled, Weighted average grant date fair value (usd per share) | $ / shares 66.08
Forfeited, Weighted average grant date fair value (usd per share) | $ / shares 83.59
Outstanding ending balance, Weighted average grant date fair value (usd per share) | $ / shares $ 105.06
Restricted Share Units | Equity-classified  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Outstanding beginning balance, Shares | shares 539,671
Granted, Shares | shares 322,471
Vested and settled, Shares | shares (232,451)
Forfeited, Shares | shares (26,885)
Outstanding ending balance, Shares | shares 602,806
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Outstanding beginning balance, Weighted average grant date fair value (usd per share) | $ / shares $ 53.64
Granted, Weighted average grant date fair value (usd per share) | $ / shares 75.76
Vested and settled, Weighted average grant date fair value (usd per share) | $ / shares 53.47
Forfeited, Weighted average grant date fair value (usd per share) | $ / shares 59.15
Outstanding ending balance, Weighted average grant date fair value (usd per share) | $ / shares $ 65.29
Deferred Share Units | Liability-classified  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Outstanding beginning balance, Shares | shares 100,560
Granted, Shares | shares 11,667
Vested and settled, Shares | shares (3,759)
Forfeited, Shares | shares 0
Outstanding ending balance, Shares | shares 108,468
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Outstanding beginning balance, Weighted average grant date fair value (usd per share) | $ / shares $ 38.36
Granted, Weighted average grant date fair value (usd per share) | $ / shares 72.48
Vested and settled, Weighted average grant date fair value (usd per share) | $ / shares 59.05
Forfeited, Weighted average grant date fair value (usd per share) | $ / shares 0
Outstanding ending balance, Weighted average grant date fair value (usd per share) | $ / shares $ 41.31