Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share [Abstract]
Net Income	$ 113.5	$ 175.2	$ 219.3
Weighted Average Number of Shares Outstanding Reconciliation
Weighted-average number of common shares outstanding - basic	43.4	45.2	48.3
Dilutive effect of common share equivalents	0.2	0.5	0.4
Weighted Average Number of Shares Outstanding, Diluted, Total	43.6	45.7	48.7
Earnings per share (in dollars per share)	$ 2.62	$ 3.88	$ 4.54
Earnings per share (in dollars per share)	$ 2.60	$ 3.83	$ 4.50