Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Payment Arrangement, Cost by Plan [Table Text Block]

The following table summarizes the Company's pre-tax compensation expense and related income tax benefit during the three and six months ended June 30, 2019 and 2018 related to the Company's performance units and restricted stock.

	Three Months Ended June 30,				Six Months Ended June 30,
(In millions)	2019		2018		2019		2018
Performance units:
Total shareholder return	$	2.3	$	2.1	$	4.5	$	4.1
Earnings per share	0.4		1.0		0.9		1.7
Total performance units	2.7		3.1		5.4		5.8
Restricted stock	0.2		—		0.5		—
Total compensation expense	$	2.9	$	3.1	$	5.9	$	5.8
Income tax benefit	$	0.7	$	0.8	$	1.5	$	1.5