Stockholders' Deficit (Tables)

3 Months Ended

Mar. 31, 2018

Compensation Related Costs [Abstract]

Schedule of Stock-based Compensation Expense Recognized

The following reflects total stock-based compensation expense recognized under all programs:

	Three Months Ended
	March 31,
	2018		2017
Related to stock options	$	1.4	$	0.2
Related to RSUs	7.4		5.7
Total	$	8.8	$	5.9