Net Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Net Earnings Per Common Share

The following table shows the calculation of basic and diluted net earnings per common share:

	Three Months Ended March 31,
(In millions, except per share amounts)	2023		2022
Basic Net Earnings Per Common Share:
Numerator:
Net earnings	$	61.9	$	149.2
Distributed and allocated undistributed net earnings to unvested restricted stockholders	—		—
Net earnings available to common stockholders	$	61.9	$	149.2
Denominator:
Weighted average number of common shares outstanding - basic	144.1		147.6
Basic net earnings per common share:
Basic net earnings per common share	$	0.43	$	1.01
Diluted Net Earnings Per Common Share:
Numerator:
Net earnings available to common stockholders	$	61.9	$	149.2
Denominator:
Weighted average number of common shares outstanding - basic	144.1		147.6
Effect of dilutive stock shares and units	0.7		1.9
Weighted average number of common shares outstanding - diluted under treasury stock	144.8		149.5
Diluted net earnings per common share	$	0.43	$	1.00