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Stock-Based Compensation
 9 Months Ended
Sep. 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 September 30,Nine Months Ended September 30,
2025202420252024
 (In millions)
Cost of revenues$2.2 $2.0 $6.5 $6.0 
Research and development2.9 2.6 8.5 8.0 
Selling, general and administrative13.3 11.2 36.8 31.2 
Stock-based compensation expense18.4 15.8 51.8 45.2 
Capitalization (included in Property and equipment, net)0.2 0.3 0.70.8
Total stock-based compensation$18.6 $16.1 $52.5 $46.0 
The following table presents the nature of the Company’s total stock-based compensation:
 Three Months Ended September 30,Nine Months Ended September 30,
2025202420252024
 (In millions)
RSUs$14.3 $13.8 $40.2 $37.8 
Performance-based RSUs3.3 1.3 9.5 5.0 
ESPP1.0 1.0 2.8 3.2 
Total stock-based compensation$18.6 $16.1 $52.5 $46.0