Earnings Per Share Attributable to Common Stockholders (Tables)

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

	Three months ended June 30,				Six months ended June 30,
	2024		2023		2024		2023
Net income available to common stockholders	$	100.7	$	77.4	$	197.8	$	44.2
Denominator:
Basic weighted average shares outstanding	183,887,145		181,860,026		183,473,233		151,343,397
Weighted average effect of dilutive securities:
Share units	434,999		460,400		630,431		545,905
Stock options and ESPP	590,440		489,973		643,154		515,528
Diluted weighted average shares outstanding	184,912,584		182,810,399		184,746,818		152,404,830
Earnings per share available to common stockholders:
Basic	$	0.55	$	0.43	$	1.08	$	0.29
Diluted	$	0.54	$	0.42	$	1.07	$	0.29