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Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2023
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 September 30,Nine Months Ended September 30,
2023202220232022
 (In millions)
Cost of revenues$1.9 $1.8 $5.2 $5.3 
Research and development2.5 2.5 7.5 7.2 
Selling, general and administrative11.1 12.0 32.3 31.7 
Stock-based compensation expense15.5 16.3 45.0 44.2 
Capitalization (included in Property and equipment, net)0.3 0.4 0.81.2
Total stock-based compensation$15.8 $16.7 $45.8 $45.4 
Nature Of Total Stock-Based Compensation
The following table presents the nature of the Company’s total stock-based compensation:
 Three Months Ended September 30,Nine Months Ended September 30,
2023202220232022
 (In millions)
RSUs$13.4 $12.3 $35.9 $33.2 
Performance-based RSUs1.3 3.3 6.6 9.0 
ESPP1.1 1.1 3.3 3.2 
Total stock-based compensation$15.8 $16.7 $45.8 $45.4