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Compensation Plans (Schedule of Weighted Average Assumptions Used to Fair Value Share Units) (Details)	12 Months Ended
	Dec. 31, 2025 $ / shares	Dec. 31, 2024 $ / shares	Dec. 31, 2023 $ / shares	Dec. 31, 2025 $ / shares	Dec. 31, 2024 $ / shares	Dec. 31, 2023 $ / shares
Canadian Dollar [Member] | Tandem Stock Appreciation Rights (TSARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair Value Assumptions, Risk Free Interest Rate	2.55%	2.92%	3.95%
Fair Value Assumptions, Dividend Yield	3.12%	2.82%	2.78%
Fair Value Assumptions, Expected Volatility Rate	38.35%	42.83%	48.87%
Fair Value Assumptions, Expected Term	1 month 6 days	7 months 6 days	10 months 24 days
Market Share Price				$ 53.79	$ 58.23	$ 58.16
Weighted Average Grant Date Fair Value				$ 47.7	$ 54.84	$ 62.45
United States Of America Dollars [Member] | Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair Value Assumptions, Risk Free Interest Rate	2.55%	2.92%	3.95%
Fair Value Assumptions, Dividend Yield	3.06%	2.96%	2.73%
Fair Value Assumptions, Expected Volatility Rate	39.57%	46.02%	52.32%
Fair Value Assumptions, Expected Term	2 months 12 days	8 months 12 days	1 year 1 month 6 days
Market Share Price	$ 39.19	$ 40.5	$ 43.92
Weighted Average Grant Date Fair Value	$ 34.36	$ 40.91	$ 44.77

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Share based compensation arrangement by share based payment award fair value assumptions weighted average grant date fair value.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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