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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Classification Of Stock-Based Compensation The following table presents the classification of stock-based compensation:
 Three Months Ended March 31,
20222021
 (In millions)
Cost of revenues$1.7 $1.6 
Research and development2.4 2.0 
Selling, general and administrative10.1 9.4 
Stock-based compensation expense14.2 13.0 
Capitalization (included in Property and equipment, net)0.3 0.3 
Total stock-based compensation$14.5 $13.3 
Nature Of Total Stock-Based Compensation
The following table presents the nature of the Company’s total stock-based compensation:
 Three Months Ended March 31,
20222021
 (In millions)
RSUs$10.2 $9.7 
Performance-based RSUs3.2 2.5 
ESPP1.1 1.1 
Total stock-based compensation$14.5 $13.3