Acquisitions - Pro Forma Financial Information (Details) - M&C - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Business Combination, Pro Forma Information [Line Items]
Business Combination, Pro Forma Information, Pro Forma Revenue	$ 445.4	$ 1,382.4	$ 1,348.9
Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax	$ 68.3	$ 194.4	$ 202.4
Basic earnings per share (in dollars per share)	$ 1.74	$ 4.95	$ 5.14
Diluted earnings per share (in dollars per share)	$ 1.73	$ 4.94	$ 5.12