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Stock-Based Compensation
 6 Months Ended
Jun. 30, 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 June 30,Six Months Ended June 30,
2025202420252024
 (In millions)
Cost of revenues$2.2 $2.0 $4.3 $4.0 
Research and development2.8 2.8 5.6 5.4 
Selling, general and administrative10.9 9.5 23.5 20.0 
Stock-based compensation expense15.9 14.3 33.4 29.4 
Capitalization (included in Property and equipment, net)0.3 0.3 0.50.5
Total stock-based compensation$16.2 $14.6 $33.9 $29.9 
The following table presents the nature of the Company’s total stock-based compensation:
 Three Months Ended June 30,Six Months Ended June 30,
2025202420252024
 (In millions)
RSUs$12.9 $11.9 $25.9 $24.0 
Performance-based RSUs2.4 1.6 6.2 3.7 
ESPP0.9 1.1 1.8 2.2 
Total stock-based compensation$16.2 $14.6 $33.9 $29.9