Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator:
Net Income (Loss) Attributable to Parent	$ 77.4	$ 75.8
Denominator:
Denominator for basic earnings per share — weighted average shares	35.3	35.5
Effect of dilutive securities:
Equity compensation plans	0.5	0.5
Weighted-average shares outstanding - diluted	35.8	36.0
Basic earnings per share from consolidated operations (in dollars per share)	$ 2.19	$ 2.13
Diluted earnings per share (in dollars per share)	$ 2.16	$ 2.10