Income Taxes (Schedule of Income Before Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Domestic (Canada)	$ 191.9	$ 252.9	$ 170.0
Foreign	343.7	297.2	112.4
Income before income taxes	$ 535.6	$ 550.1	$ 282.4