Earnings Per Share Available to Common Stockholders (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 available to common stockholders	$ 382.2	$ 372.7	$ 174.9
Weighted-average number of shares outstanding:
Basic weighted average shares outstanding (in shares)	185.4	184.0	167.0
Weighted average effect of dilutive share-based awards (in shares)	1.5	1.3	1.2
Diluted weighted average shares outstanding (in shares)	186.9	185.3	168.2
Earnings per share available to common stockholders:
Basic (usd per share)	$ 2.06	$ 2.03	$ 1.05
Diluted (usd per share)	$ 2.04	$ 2.01	$ 1.04