Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of stock-based compensation expense by award type

The tables below summarize the Company's stock-based compensation expense by award type and expense category line item during the periods indicated (in millions).

	Three Months Ended
	March 31,
Award type	2020		2019
Stock appreciation rights	$	1.7	$	3.9
Restricted stock units	23.2		27.7
Common stock equivalents	0.2		0.2
Total (1)	$	25.1	$	31.8

Schedule of stock-based compensation expense by expense category

	Three Months Ended
	March 31,
Expense category line item	2020		2019
Cost of services and product development	$	12.1	$	11.3
Selling, general and administrative	13.0		20.4
Acquisition and integration charges (2)	—		0.1
Total (1)	$	25.1	$	31.8

(1) Includes charges of $11.6 million and $20.9 million during the three months ended March 31, 2020 and 2019, respectively, for awards to retirement-eligible employees. Those awards vest on an accelerated basis.

(2) Includes charges related to acquisitions and related integration efforts.