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Income Taxes (Summary Of Tax Years By Jurisdiction) (Details)
12 Months Ended
Dec. 31, 2025
Internal Revenue Service (IRS) [Member] | Federal [Member] | Minimum [Member]  
Income Tax Examination [Line Items]  
Taxation Year 2021
Internal Revenue Service (IRS) [Member] | Federal [Member] | Maximum [Member]  
Income Tax Examination [Line Items]  
Taxation Year 2025
Internal Revenue Service (IRS) [Member] | Provincial/State [Member] | Minimum [Member]  
Income Tax Examination [Line Items]  
Taxation Year 2019
Internal Revenue Service (IRS) [Member] | Provincial/State [Member] | Maximum [Member]  
Income Tax Examination [Line Items]  
Taxation Year 2025
Canada Revenue Agency [Member] | Foreign [Member] | Minimum [Member]  
Income Tax Examination [Line Items]  
Taxation Year 2017
Canada Revenue Agency [Member] | Foreign [Member] | Maximum [Member]  
Income Tax Examination [Line Items]  
Taxation Year 2025
Canada Revenue Agency [Member] | Provincial/State [Member] | Minimum [Member]  
Income Tax Examination [Line Items]  
Taxation Year 2017
Canada Revenue Agency [Member] | Provincial/State [Member] | Maximum [Member]  
Income Tax Examination [Line Items]  
Taxation Year 2025