Earnings Per Share

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Earnings Per Share

14.          Earnings Per Share

	Three months ended
	March 31, 2024		March 31, 2023
Earnings per common share
Net income	$	81.2	$	1,732.6
Weighted average common shares outstanding	117,658,016		110,771,897
Earnings per common share	$	0.69	$	15.64
Earnings per diluted common share
Net income	$	81.2	$	1,732.6
Weighted average common shares outstanding	117,658,016		110,771,897
Share-based compensation plans	690,368		—
Weighted average diluted common shares outstanding	118,348,384		110,771,897
Earnings per diluted common share	$	0.69	$	15.64