Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Schedule of Total Stock-Based Compensation Expense Included in Company's Consolidated Statements of Income and Comprehensive Income

The total stock-based compensation expense included in the Company’s consolidated statements of income and comprehensive income was as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Cost of revenues	$	1.2	$	0.8	$	3.1	$	1.9
Research and development expense		1.0		1.0		3.0		2.8
Selling, general and administrative expense		5.1		4.0		15.9		16.2
Acquisition and integration related expense		0.1		1.2		0.7		20.8
Restructuring related expense		—		0.4		—		0.4
Total pre-tax stock-based compensation expense	$	7.4	$	7.4	$	22.7	$	42.1

Summary of Activity for RSUs under 2014 Plan

The following table presents the activity for RSUs under the 2014 Plan:

	Nine Months Ended September 30, 2020
	Outstanding RSUs			Weighted Average Grant Date Fair Value
RSUs – beginning of period		1,102,534		$	85.93
Accrued dividend shares		535		$	107.82
Granted		305,610		$	98.25
Vested		(732,416	)	$	85.32
Forfeited		(63,094	)	$	85.40
RSUs – end of period		613,169		$	92.87

Stock Appreciation Rights (SARs) [Member]

Summary of Activity for SARs under 2014 Plan

The following table presents the activity for SARs under the 2014 Plan:

	Nine Months Ended September 30, 2020
	Outstanding SARs			Weighted Average Grant Date Fair Value
SARs – beginning of period		108,854		$	29.05
Exercised		(49,492	)	$	27.42
Forfeited or expired		(1,400	)	$	22.39
SARs – end of period		57,962		$	30.61