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Income Taxes (Composition of Income Before Provision for Income Taxes) (Details) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Composition of taxes on income from continuing operations [Line items]
Income before provision for income taxes	$ 1,173	$ 1,194
Canada
Composition of taxes on income from continuing operations [Line items]
Income before provision for income taxes	171	173
United States
Composition of taxes on income from continuing operations [Line items]
Income before provision for income taxes	964	1,063
Other
Composition of taxes on income from continuing operations [Line items]
Income before provision for income taxes	$ 38	$ (42)

X

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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