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Stock-Based Compensation (Summary of Activity Related to Employee and Director Deferred Share Units) (Details) - DSU Plan - Deferred Share Unit Plans	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Employee
Share Unit Plans: Units
Share Unit Plans: Outstanding, Beginning Balance | shares	627,223
Share Unit Plans: Granted including DRIP | shares	85,740
Share Unit Plans: Outstanding and exercisable, Ending Balance | shares	712,963
Share Unit Plans: Weighted Average Grant Date Fair Value
Share Unit Plans: Weighted Average Grant Date Fair Value: Outstanding, Beginning Balance | $ / shares	$ 41.55
Share Unit Plans: Weighted Average Grant Date Fair Value: Granted including DRIP | $ / shares	47.66
Share Unit Plans: Weighted Average Grant Date Fair Value: Outstanding and exercisable, Ending Balance | $ / shares	$ 42.29
Director
Share Unit Plans: Units
Share Unit Plans: Outstanding, Beginning Balance | shares	664,258
Share Unit Plans: Granted including DRIP | shares	117,893
Share Unit Plans: Exercised | shares	(53,093)
Share Unit Plans: Outstanding and exercisable, Ending Balance | shares	729,058
Share Unit Plans: Weighted Average Grant Date Fair Value
Share Unit Plans: Weighted Average Grant Date Fair Value: Outstanding, Beginning Balance | $ / shares	$ 45.83
Share Unit Plans: Weighted Average Grant Date Fair Value: Granted including DRIP | $ / shares	49.99
Share Unit Plans: Weighted Average Grant Date Fair Value: Exercised | $ / shares	49.39
Share Unit Plans: Weighted Average Grant Date Fair Value: Outstanding and exercisable, Ending Balance | $ / shares	$ 46.24

X

- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee exercised the right during the reporting period, in accordance with the terms of the arrangement.

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Number of non-option equity instruments exercised by participants.

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Net number of non-option equity instruments granted to participants.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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