Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Schedule of stock -based compensation expense in operations

Stock-based compensation expense related to continuing operations is included in Selling, general and administrative expenses in the accompanying Consolidated Statements of Operations as follows (in millions):

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2021		2020		2021		2020
Stock-based compensation expense (1)	$	8.9	$	6.7	$	17.5	$	10.4

(1) All expense was recorded in our Corporate and Other business segment.