Earnings Per Share - Schedule of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Numerator
Net income (controlling interest)	$ 110.4	$ 72.4
Loss from hypothetical settlement of Redeemable non-controlling interests, net of taxes	(5.1)	(3.9)
Interest expense on junior convertible securities, net of taxes	0.0	3.4
Net income (controlling interest), as adjusted	$ 105.3	$ 71.9
Denominator
Average shares outstanding (basic) (in shares)	26.8	29.2
Effect of dilutive instruments:
Stock options and restricted stock units (in shares)	0.5	1.3
Hypothetical issuance of shares to settle Redeemable non-controlling interests (in shares)	0.2	0.4
Junior convertible securities (in shares)	0.0	1.7
Average shares outstanding (diluted) (in shares)	27.5	32.6