Net Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Calculations of Net Earnings Per Share - Basic and Diluted

The calculations of net earnings per share – basic and net earnings per share – diluted were as follows:

	3 Months Ended
	March 31,
	2019		2018
Net earnings available to common shareholders	$	53.5	$	97.0
Weighted-average common shares outstanding (in millions)
Weighted-average common shares outstanding - basic	60.6		66.3
Effect of dilutive securities - stock options	—		0.2
Effect of other share-based awards	0.4		0.4
Weighted-average common shares outstanding - diluted	61.0		66.9
Net earnings per share - basic	$	0.88	$	1.46
Net earnings per share - diluted	$	0.88	$	1.45