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Stock-Based Compensation
 3 Months Ended
Mar. 31, 2024
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,
20242023
 (In millions)
Cost of revenues$2.0 $1.3 
Research and development2.6 2.5 
Selling, general and administrative10.5 10.0 
Stock-based compensation expense15.1 13.8 
Capitalization (included in Property and equipment, net)0.2 0.3 
Total stock-based compensation$15.3 $14.1 

The following table presents the nature of the Company’s total stock-based compensation:
 Three Months Ended March 31,
20242023
 (In millions)
RSUs$12.1 $10.9 
Performance-based RSUs2.1 2.1 
ESPP1.1 1.1 
Total stock-based compensation$15.3 $14.1