Quarterly report [Sections 13 or 15(d)]

REVENUE - Disaggregation of Revenue (Details)

v3.25.1
REVENUE - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Disaggregation of Revenue [Line Items]    
Operating revenue $ 1,442.0 $ 1,389.4
Change in revenue $ 52.6  
Change in revenue (as a percent) 4.00%  
Workforce Solutions    
Disaggregation of Revenue [Line Items]    
Change in revenue $ 15.8  
Change in revenue (as a percent) 3.00%  
Workforce Solutions | Verification Services    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 502.2 476.5
Change in revenue $ 25.7  
Change in revenue (as a percent) 5.00%  
Workforce Solutions | Employer Services    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 116.4 126.3
Change in revenue $ (9.9)  
Change in revenue (as a percent) (8.00%)  
U.S. Information Solutions    
Disaggregation of Revenue [Line Items]    
Change in revenue $ 34.6  
Change in revenue (as a percent) 7.00%  
U.S. Information Solutions | Online Information Solutions    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 448.1 418.2
Change in revenue $ 29.9  
Change in revenue (as a percent) 7.00%  
U.S. Information Solutions | Financial Marketing Services    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 51.8 47.1
Change in revenue $ 4.7  
Change in revenue (as a percent) 10.00%  
International    
Disaggregation of Revenue [Line Items]    
Change in revenue $ 2.2  
Change in revenue (as a percent) 1.00%  
International | Asia Pacific    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 79.7 78.2
Change in revenue $ 1.5  
Change in revenue (as a percent) 2.00%  
International | Europe    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 86.6 86.2
Change in revenue $ 0.4  
Change in revenue (as a percent) 0.00%  
International | Canada    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 63.0 65.8
Change in revenue $ (2.8)  
Change in revenue (as a percent) (4.00%)  
International | Latin America    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 94.2 $ 91.1
Change in revenue $ 3.1  
Change in revenue (as a percent) 3.00%