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Stock-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule Of Stock-based Compensation Expense By Award Type
The tables below summarize the Company’s stock-based compensation expense by award type and expense category line item during the periods indicated (in millions).
Three Months Ended
 March 31,
Award type20252024
Stock appreciation rights$3.4 $4.6 
Restricted stock units46.6 45.6 
Common stock equivalents0.2 0.3 
Total (1)$50.2 $50.5 
Schedule Of Stock-Based Compensation Expense By Expense Category
Three Months Ended
 March 31,
Expense category line item20252024
Cost of services and product development$20.6 $19.5 
Selling, general and administrative29.6 31.0 
Total (1)$50.2 $50.5 

(1)Includes costs of $28.0 million and $30.6 million during the three months ended March 31, 2025 and 2024, respectively, for awards to retirement-eligible employees. Those awards are expensed on an accelerated basis.