Earnings Per Share Attributable to Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share Basic And Diluted [Line Items]
Net income available to common stockholders	$ 174.9	$ 319.7	$ 151.9
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic weighted average share outstanding (in shares)	166,963,575	110,781,282	110,315,782
Diluted average shares outstanding (in shares)	168,203,981	111,886,025	111,406,830
Net income per share attributable to common shares:
Basic (usd per share)	$ 1.05	$ 2.89	$ 1.38
Diluted (usd per share)	$ 1.04	$ 2.86	$ 1.36
Share units
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Effect of dilutive securities: Share units and Stock options (in shares)	689,290	516,144	388,083
Stock options and ESPP
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Effect of dilutive securities: Share units and Stock options (in shares)	551,116	588,599	702,965