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Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2024
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,
2024202320242023
 (In millions)
Cost of revenues$2.0 $1.9 $6.0 $5.2 
Research and development2.6 2.5 8.0 7.5 
Selling, general and administrative11.2 11.1 31.2 32.3 
Stock-based compensation expense15.8 15.5 45.2 45.0 
Capitalization (included in Property and equipment, net)0.3 0.3 0.8 0.8 
Total stock-based compensation$16.1 $15.8 $46.0 $45.8 
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,
2024202320242023
 (In millions)
RSUs$13.8 $13.4 $37.8 $35.9 
Performance-based RSUs1.3 1.3 5.0 6.6 
ESPP1.0 1.1 3.2 3.3 
Total stock-based compensation$16.1 $15.8 $46.0 $45.8