Quarterly report pursuant to Section 13 or 15(d)

REVENUE - Disaggregation of Revenue (Details)

v3.21.2
REVENUE - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Disaggregation of Revenue [Line Items]        
Operating revenue $ 1,234.8 $ 982.8 $ 2,447.8 $ 1,940.8
Change in revenue $ 252.0   $ 507.0  
Change in revenue (as a percent) 26.00%   26.00%  
Workforce Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 495.7 352.9 $ 976.5 654.6
Change in revenue $ 142.8   $ 321.9  
Change in revenue (as a percent) 40.00%   49.00%  
Workforce Solutions | Verification Services        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 394.5 251.9 $ 779.6 472.1
Change in revenue $ 142.6   $ 307.5  
Change in revenue (as a percent) 57.00%   65.00%  
Workforce Solutions | Employer Services        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 101.2 101.0 $ 196.9 182.5
Change in revenue $ 0.2   $ 14.4  
Change in revenue (as a percent) 0.00%   8.00%  
U.S. Information Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 405.8 365.6 $ 815.2 708.8
Change in revenue $ 40.2   $ 106.4  
Change in revenue (as a percent) 11.00%   15.00%  
U.S. Information Solutions | Online Information Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 298.0 262.9 $ 600.0 515.7
Change in revenue $ 35.1   $ 84.3  
Change in revenue (as a percent) 13.00%   16.00%  
U.S. Information Solutions | Mortgage Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 49.3 51.2 $ 103.4 94.0
Change in revenue $ (1.9)   $ 9.4  
Change in revenue (as a percent) (4.00%)   10.00%  
U.S. Information Solutions | Financial Marketing Services        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 58.5 51.5 $ 111.8 99.1
Change in revenue $ 7.0   $ 12.7  
Change in revenue (as a percent) 14.00%   13.00%  
International        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 250.9 180.5 $ 492.3 396.5
Change in revenue $ 70.4   $ 95.8  
Change in revenue (as a percent) 39.00%   24.00%  
International | Asia Pacific        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 91.4 65.2 $ 178.3 134.9
Change in revenue $ 26.2   $ 43.4  
Change in revenue (as a percent) 40.00%   32.00%  
International | Europe        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 68.4 48.0 $ 137.1 114.4
Change in revenue $ 20.4   $ 22.7  
Change in revenue (as a percent) 42.00%   20.00%  
International | Latin America        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 44.0 34.2 $ 85.7 77.4
Change in revenue $ 9.8   $ 8.3  
Change in revenue (as a percent) 29.00%   11.00%  
International | Canada        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 47.1 33.1 $ 91.2 69.8
Change in revenue $ 14.0   $ 21.4  
Change in revenue (as a percent) 42.00%   31.00%  
Global Consumer Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 82.4 $ 83.8 $ 163.8 $ 180.9
Change in revenue $ (1.4)   $ (17.1)  
Change in revenue (as a percent) (2.00%)   (9.00%)