Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 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 March 31,
	2020		2019
Cost of revenues	$	1.0	$	0.4
Research and development		1.1		0.8
Selling, general and administrative		5.9		8.0
Acquisition and integration cost		0.5		18.6
Total pre-tax stock-based compensation expense	$	8.5	$	27.8

Summary of Activity for RSUs

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

	Three Months Ended March 31, 2020
	Outstanding RSUs			Weighted Average Grant Date Fair Value
RSUs – beginning of period		1,102,534		$	85.93
Accrued dividend shares		254		$	100.84
Granted		88,368		$	112.24
Vested		(446,503	)	$	84.06
Forfeited		(41,642	)	$	83.76
RSUs – end of period		703,011		$	90.56

Stock Appreciation Rights (SARs) [Member]

Summary of Activity for Outstanding and Exercisable Stock Appreciation Rights

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

	Three Months Ended March 31, 2020
	Outstanding SARs			Weighted Average Grant Date Fair Value
SARs – beginning of period		108,854		$	29.05
Exercised		(16,216	)	$	23.87
Forfeited or expired		—		$	—
SARs Outstanding – end of period		92,638		$	30.0