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Revenue (Tables)
12 Months Ended
Dec. 31, 2024
Revenue from Contract with Customer [Abstract]  
Summary of Revenue by Major Customer Category
The table below summarizes the major service categories from which the Company derives its revenues for the years ended December 31:
(in millions)202420232022
Certification Testing$784 $718 $657 
Ongoing Certification Services953 874 828 
Non-certification Testing and Other Services860 812 769 
Software273 274 266 
Total $2,870 $2,678 $2,520