Quarterly report pursuant to Section 13 or 15(d)

REVENUE - Disaggregation of Revenue (Details)

v3.20.2
REVENUE - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Disaggregation of Revenue [Line Items]        
Operating revenue $ 1,068.3 $ 875.7 $ 3,009.1 $ 2,601.8
Change in revenue $ 192.6   $ 407.3  
Change in revenue (as a percent) 22.00%   16.00%  
Operating Segments | U.S. Information Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 386.3 315.5 $ 1,095.1 946.5
Change in revenue $ 70.8   $ 148.6  
Change in revenue (as a percent) 22.00%   16.00%  
Operating Segments | U.S. Information Solutions | Online Information Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 284.7 233.0 $ 800.3 696.7
Change in revenue $ 51.7   $ 103.6  
Change in revenue (as a percent) 22.00%   15.00%  
Operating Segments | U.S. Information Solutions | Mortgage Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 55.4 36.7 $ 149.4 104.4
Change in revenue $ 18.7   $ 45.0  
Change in revenue (as a percent) 51.00%   43.00%  
Operating Segments | U.S. Information Solutions | Financial Marketing Services        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 46.2 45.8 $ 145.4 145.4
Change in revenue $ 0.4   $ 0.0  
Change in revenue (as a percent) 1.00%   0.00%  
Operating Segments | Workforce Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 376.8 240.6 $ 1,031.4 699.2
Change in revenue $ 136.2   $ 332.2  
Change in revenue (as a percent) 57.00%   48.00%  
Operating Segments | Workforce Solutions | Verification Services        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 301.1 185.3 $ 773.2 506.5
Change in revenue $ 115.8   $ 266.7  
Change in revenue (as a percent) 63.00%   53.00%  
Operating Segments | Workforce Solutions | Employer Services        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 75.7 55.3 $ 258.2 192.7
Change in revenue $ 20.4   $ 65.5  
Change in revenue (as a percent) 37.00%   34.00%  
Operating Segments | International        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 218.0 230.5 $ 614.6 684.6
Change in revenue $ (12.5)   $ (70.0)  
Change in revenue (as a percent) (5.00%)   (10.00%)  
Operating Segments | International | Asia Pacific        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 80.2 77.4 $ 215.1 226.4
Change in revenue $ 2.8   $ (11.3)  
Change in revenue (as a percent) 4.00%   (5.00%)  
Operating Segments | International | Europe        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 58.7 64.8 $ 173.2 199.3
Change in revenue $ (6.1)   $ (26.1)  
Change in revenue (as a percent) (9.00%)   (13.00%)  
Operating Segments | International | Latin America        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 40.4 49.2 $ 117.8 144.0
Change in revenue $ (8.8)   $ (26.2)  
Change in revenue (as a percent) (18.00%)   (18.00%)  
Operating Segments | International | Canada        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 38.7 39.1 $ 108.5 114.9
Change in revenue $ (0.4)   $ (6.4)  
Change in revenue (as a percent) (1.00%)   (6.00%)  
Operating Segments | Global Consumer Solutions        
Disaggregation of Revenue [Line Items]        
Operating revenue $ 87.2 $ 89.1 $ 268.0 $ 271.5
Change in revenue $ (1.9)   $ (3.5)  
Change in revenue (as a percent) (2.00%)   (1.00%)