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Compensation Plans (Schedule of Outstanding Restricted Share Units) (Details) - Restricted Share Units [Member]
shares in Thousands
 12 Months Ended
Dec. 31, 2025
$ / shares
shares
Dec. 31, 2025
$ / shares
shares
Dec. 31, 2024
$ / shares
shares
Dec. 31, 2024
$ / shares
shares
United States Of America Dollars [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unvested and Outstanding, Beginning of Year | shares 1,878 1,878 2,225 2,225
Granted | shares 1,131 1,131 1,050 1,050
Units, in Lieu of Dividends | shares 58 58 55 55
Vested and Released | shares (903) (903) (1,269) (1,269)
Forfeited | shares (197) (197) (183) (183)
Unvested and Outstanding, End of Year | shares 1,967 1,967 1,878 1,878
Unvested and Outstanding, Beginning of Year | $ / shares $ 47.24   $ 39.11  
Granted | $ / shares 38.78   49.3  
Units, in Lieu of Dividends | $ / shares 42.83   47.06  
Vested and Released | $ / shares 46.31   34.87  
Forfeited | $ / shares 45.77   46.61  
Unvested and Outstanding, End of Year | $ / shares $ 42.82   $ 47.24  
Canadian Dollar [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unvested and Outstanding, Beginning of Year | shares 798 798 982 982
Granted | shares 486 486 420 420
Units, in Lieu of Dividends | shares 26 26 23 23
Vested and Released | shares (409) (409) (550) (550)
Forfeited | shares (33) (33) (77) (77)
Unvested and Outstanding, End of Year | shares 868 868 798 798
Unvested and Outstanding, Beginning of Year | $ / shares   $ 63.47   $ 51.93
Granted | $ / shares   55.89   67.13
Units, in Lieu of Dividends | $ / shares   59.96   63.43
Vested and Released | $ / shares   61.92   45.8
Forfeited | $ / shares   60.52   63.12
Unvested and Outstanding, End of Year | $ / shares   $ 59.96   $ 63.47