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Employee Benefits And Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2023

Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]

Classification Of Stock-Based Compensation

The following table presents the classification of stock-based compensation:

			Year Ended December 31,
			2023						2022						2021
			(In millions)
Cost of revenues			$	7.1					$	7.2					$	6.5
Research and development			10.0						9.5						8.3
Selling, general and administrative			42.6						41.9						38.6
Stock-based compensation expense			59.7						58.6						53.4
Capitalization (included in Property and equipment, net)			1.1						1.6						1.7
Total stock-based compensation			$	60.8					$	60.2					$	55.1

Nature Of Total Stock-Based Compensation

The following table presents the nature of the Company’s total stock-based compensation:

			Year Ended December 31,
			2023						2022						2021
			(In millions)
RSUs			$	47.1					$	43.8					$	41.5
PSUs			9.3						12.1						9.3
ESPP			4.4						4.3						4.3
Total stock-based compensation			$	60.8					$	60.2					$	55.1

Summary Of Unvested RSUs Activity

The following table summarizes unvested RSUs activity for the year ended December 31, 2023:

			Shares						Weighted-Average Grant-Date Fair Value
			(Shares in millions)
Unvested at beginning of period			0.6						$	206.32
Granted			0.4						$	212.80
Vested and settled			(0.3)						$	205.66
Unvested at end of period			0.7						$	209.80

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