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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2022
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 June 30,Six Months Ended June 30,
2022202120222021
 (In millions)
Cost of revenues$1.8 $1.7 $3.5 $3.3 
Research and development2.3 2.0 4.7 3.9 
Selling, general and administrative9.6 9.9 19.7 19.4 
Stock-based compensation expense13.7 13.6 27.9 26.6 
Capitalization (included in Property and equipment, net)0.5 0.5 0.80.8
Total stock-based compensation$14.2 $14.1 $28.7 $27.4 
Nature Of Total Stock-Based Compensation
The following table presents the nature of the Company’s total stock-based compensation:
 Three Months Ended June 30,Six Months Ended June 30,
2022202120222021
 (In millions)
RSUs$10.7 $10.2 $20.9 $19.9 
Performance-based RSUs2.5 2.9 5.7 5.4 
ESPP1.0 1.0 2.1 2.1 
Total stock-based compensation$14.2 $14.1 $28.7 $27.4