Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings per Share

	Three Months Ended
	March 31,
(in millions, except per share data)	2024		2023
Net income attributable to common shareholders	$	37.8	$	43.7
Average basic shares outstanding	57.0		56.7
Effect of dilutive share-based awards	0.7		—
Average diluted shares outstanding	57.7		56.7
Earnings per basic share	$	0.66	$	0.77
Earnings per diluted share	$	0.66	$	0.77