Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net income to common shareholders	$ 60.5	$ 41.5
Basic weighted average shares outstanding (in shares)	221.2	224.7
Diluted weighted average shares outstanding (in shares)	222.1	225.2
Net income per common share:
Basic net income per share (in dollars per share)	$ 0.27	$ 0.18
Diluted net income per share (in dollars per share)	$ 0.27	$ 0.18
Antidilutive securities excluded from computation of earnings per share (in shares)	0.8	1.0