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Stock-Based Compensation
 3 Months Ended
Mar. 31, 2025
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Stock-Based Compensation Stock-based Compensation
Stock-based compensation is classified in the Condensed Consolidated Statements of Comprehensive Income in the same expense line items as cash compensation. The following table presents the classification of stock-based compensation:
 Three Months Ended March 31,
20252024
 (In millions)
Cost of revenues$2.1 $2.0 
Research and development2.8 2.6 
Selling, general and administrative12.6 10.5 
Stock-based compensation expense17.5 15.1 
Capitalization (included in Property and equipment, net)0.2 0.2 
Total stock-based compensation$17.7 $15.3 

The following table presents the nature of the Company’s total stock-based compensation:
 Three Months Ended March 31,
20252024
 (In millions)
RSUs$13.0 $12.1 
Performance-based RSUs3.8 2.1 
ESPP0.9 1.1 
Total stock-based compensation$17.7 $15.3