Earnings Per Share Available to Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share Basic And Diluted [Line Items]
Net income available to common stockholders	$ 372.7	$ 174.9	$ 319.7
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic weighted average shares outstanding (in shares)	183,958,258	166,963,575	110,781,282
Diluted weighted average shares outstanding (in shares)	185,254,557	168,203,981	111,886,025
Earnings per share available to common stockholders:
Basic (usd per share)	$ 2.03	$ 1.05	$ 2.89
Diluted (usd per share)	$ 2.01	$ 1.04	$ 2.86
Share units
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Effect of dilutive securities: Share units and Stock options and employee share purchase plan (in shares)	684,066	689,290	516,144
Stock options and employee share purchase plan
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Effect of dilutive securities: Share units and Stock options and employee share purchase plan (in shares)	612,233	551,116	588,599