Earnings per Common Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Compilation of Basic and Diluted Earnings Per Common Share

The following table sets forth the compilation of basic and diluted (loss) earnings per common share for the three and six months ended June 30, 2019 and 2018:

($ and shares in millions, except per share amounts)	Three months ended June 30					Six months ended June 30
	2019			2018		2019		2018
Numerator:
Net (loss) income for basic earnings per common share	$	(6.2	)	$	6.0	$	43.2	$	3.9
Denominator:
Weighted average shares for basic (loss) earnings per common share	43.4			42.8		43.3		42.7
Effect of dilutive share-based awards	—			0.6		0.6		0.6
Adjusted weighted average shares for diluted net (loss) earnings per common share	43.4			43.4		43.9		43.3
Basic net (loss) earnings per common share	$	(0.14	)	$	0.14	$	1.00	$	0.09
Diluted net (loss) earnings per common share	$	(0.14	)	$	0.14	$	1.00	$	0.09

Options to Purchase Shares of Common Stock

The following table sets forth common stock options, stock awards and restricted share units ("RSU award") of the Company that were not included in the computation of diluted earnings per common share because the exercise price of the options, or awards, was greater than the average market price or their inclusion would have been antidilutive for the three and six months ended June 30, 2019 and 2018:

(shares in millions)	Three months ended June 30		Six months ended June 30
	2019	2018	2019	2018
Total number of antidilutive options and awards	0.6	0.7	—	0.7