Earnings Per Share

9 Months Ended

Sep. 30, 2024

Earnings Per Share [Abstract]

Earnings Per Share

14.          Earnings Per Share

	Three months ended				Nine months ended
	September 30, 2024		September 30, 2023		September 30, 2024		September 30, 2023
Earnings per common share
Net income	$	100.6	$	87.7	$	235.5	$	1,904.2
Weighted average common shares outstanding	114,445,447		117,681,835		116,390,461		113,100,521
Earnings per common share	$	0.88	$	0.75	$	2.02	$	16.84
Earnings per diluted common share
Net income	$	100.6	$	87.7	$	235.5	$	1,904.2
Weighted average common shares outstanding	114,445,447		117,681,835		116,390,461		113,100,521
Share-based compensation plans	289,079		293,264		455,530		132,409
Weighted average diluted common shares outstanding	114,734,526		117,975,099		116,845,991		113,232,930
Earnings per diluted common share	$	0.88	$	0.74	$	2.02	$	16.82