Quarterly report [Sections 13 or 15(d)]

REVENUE - Disaggregation of Revenue (Details)

v3.25.3
REVENUE - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Disaggregation of Revenue [Line Items]        
Operating revenue $ 1,544.9 $ 1,441.8 $ 4,523.9 $ 4,261.7
Change in revenue $ 103.1   $ 262.2  
Change in revenue (as a percent) 7.00%   6.00%  
Operating Segments        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 1,544.9 1,441.8 $ 4,523.9 4,261.7
Workforce Solutions        
Disaggregation of Revenue [Line Items]        
Change in revenue $ 29.4   $ 94.5  
Change in revenue (as a percent) 5.00%   5.00%  
Workforce Solutions | Operating Segments        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 649.4 620.0 $ 1,930.1 1,835.6
Workforce Solutions | Verification Services        
Disaggregation of Revenue [Line Items]        
Operating revenue 553.6 524.9 1,622.9 1,517.2
Change in revenue $ 28.7   $ 105.7  
Change in revenue (as a percent) 5.00%   7.00%  
Workforce Solutions | Employer Services        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 95.8 95.1 $ 307.2 318.4
Change in revenue $ 0.7   $ (11.2)  
Change in revenue (as a percent) 1.00%   (4.00%)  
U.S. Information Solutions        
Disaggregation of Revenue [Line Items]        
Change in revenue $ 53.3   $ 131.1  
Change in revenue (as a percent) 11.00%   9.00%  
U.S. Information Solutions | Operating Segments        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 530.2 476.9 $ 1,551.6 1,420.5
U.S. Information Solutions | Online Information Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue 467.5 419.1 1,373.5 1,255.5
Change in revenue $ 48.4   $ 118.0  
Change in revenue (as a percent) 12.00%   9.00%  
U.S. Information Solutions | Financial Marketing Services        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 62.7 57.8 $ 178.1 165.0
Change in revenue $ 4.9   $ 13.1  
Change in revenue (as a percent) 9.00%   8.00%  
International        
Disaggregation of Revenue [Line Items]        
Change in revenue $ 20.4   $ 36.6  
Change in revenue (as a percent) 6.00%   4.00%  
International | Operating Segments        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 365.3 344.9 $ 1,042.2 1,005.6
International | Latin America        
Disaggregation of Revenue [Line Items]        
Operating revenue 102.1 96.7 295.8 285.1
Change in revenue $ 5.4   $ 10.7  
Change in revenue (as a percent) 6.00%   4.00%  
International | Europe        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 102.3 94.9 $ 288.0 269.3
Change in revenue $ 7.4   $ 18.7  
Change in revenue (as a percent) 8.00%   7.00%  
International | Asia Pacific        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 90.1 88.5 $ 255.1 251.4
Change in revenue $ 1.6   $ 3.7  
Change in revenue (as a percent) 2.00%   1.00%  
International | Canada        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 70.8 $ 64.8 $ 203.3 $ 199.8
Change in revenue $ 6.0   $ 3.5  
Change in revenue (as a percent) 9.00%   2.00%