Net Earnings Per Common Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Computations of Basic and Diluted Earnings Per Share

	Three months ended				Six months ended
	June 30,				June 30,
	2016		2015		2016		2015
Net earnings	$	84.8	$	78.9	$	167.4	$	156.5
Basic weighted average common shares		100.2		104.5		100.7		104.5
Effect of restricted shares issued		0.5		0.5		0.4		0.5
Diluted weighted average common shares		100.7		105.0		101.1		105.0
Basic net earnings per common share	$	0.85	$	0.76	$	1.66	$	1.50
Diluted net earnings per common share	$	0.84	$	0.75	$	1.66	$	1.49