Stock-Based Compensation

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

STOCK-BASED COMPENSATION

We have a Management Incentive Plan (MIP) that is administered by the Compensation Committee of the Board of Directors. The Compensation Committee authorizes the grants of restricted stock (shares or units), performance share awards payable in stock based upon the attainment of specified performance goals and stock settled stock appreciation rights (SSARs). As of June 30, 2018, 2.6 million shares were available for grant under the 2013 Omnibus Plan.

	Quarter Ended June 30,					Six Months Ended June 30,
Dollar amounts in millions	2018			2017		2018			2017
Total stock-based compensation expense (cost of sales, selling, general and administrative and other operating credits and charges, net)	$	2.6		$	1.9	$	4.8		$	6.0
Income tax provision related to stock-based compensation	$	(0.6	)	$	0.3	$	(2.8	)	$	0.3
Impact on cash flow due to taxes paid related to net share settlement of equity awards	$	2.1		$	0.1	$	7.8		$	4.8

At June 30, 2018, $17.2 million of compensation cost related to unvested performance shares, restricted stock and SSARs attributable to future service had not yet been recognized.

During the first six months of 2018, we granted 159,054 performance units at an average grant date fair value of $29.31 per share and 308,190 restricted stock units at an average grant date fair value of $26.93 per share.