Earnings Per Share and Shareholders' Equity Transactions (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Information Regarding Basic and Diluted Earnings Per Share

The following table provides weighted average share information used in the calculation of the Company’s basic and diluted earnings per share:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(in millions, except per share data)	2018			2017			2018			2017
Basic shares used in the calculation of earnings per share		42.5			42.5			42.5			42.5
Dilutive effect of securities:
Employee stock options		0.3			0.2			0.3			0.2
Non-vested stock grants		0.3			0.1			0.3			0.2
Diluted shares used in the calculation of earnings per share		43.1			42.8			43.1			42.9
Per share effect of dilutive securities on income from    continuing operations and net income	$	(0.03	)	$	(0.02	)	$	(0.05	)	$	(0.03	)