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Income Taxes (Narrative) (Details) $ in Millions, $ in Millions			3 Months Ended	9 Months Ended
	Dec. 03, 2024 CAD ($)	Dec. 03, 2024 USD ($)	Sep. 30, 2025	Sep. 30, 2025	Feb. 01, 2025 CAD ($)	Feb. 01, 2025 USD ($)	Dec. 03, 2024 USD ($)
Income Tax Disclosure [Abstract]
Effective income tax rate			14.80%	20.50%
Federal and provincial income tax estimated, exclusive of interest and penalties	$ 79.1	$ 56.8
Accrued income taxes	37.7						$ 27.1
Interest and penalties accrued from income tax examination	$ 41.4						$ 29.7
Deposit paid					$ 39.5	$ 28.4

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Income Tax Examination, Deposit

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Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due. This amount is the total of current and noncurrent accrued income taxes.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Estimated amount of loss resulting from an adverse tax position.

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The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

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