STOCK COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Stock Based Compensation

The following represents total stock based compensation expense for non-qualified stock options, RSUs and the tax related benefit for the three and six months ended June 30, 2019 and 2018:

	Three Months Ended				Six Months Ended
(in millions)	2019		2018		2019		2018
Stock option expense	$	2.8	$	2.7	$	5.0	$	3.4
RSU expense	22.1		(2.6)		28.8		5.9
Total stock based compensation expense	$	24.9	$	0.1	$	33.8	$	9.3
Related deferred income tax benefit	$	3.6	$	—	$	5.0	$	1.6