Quarterly report pursuant to Section 13 or 15(d)

REVENUE - Disaggregation of Revenue (Details)

v3.22.1
REVENUE - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]    
Operating revenue $ 1,363.2 $ 1,213.0
Change in revenue $ 150.2  
Change in revenue (as a percent) 12.00%  
Workforce Solutions    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 649.0 487.2
Change in revenue $ 161.8  
Change in revenue (as a percent) 33.00%  
Workforce Solutions | Verification Services    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 513.3 385.1
Change in revenue $ 128.2  
Change in revenue (as a percent) 33.00%  
Workforce Solutions | Employer Services    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 135.7 102.1
Change in revenue $ 33.6  
Change in revenue (as a percent) 33.00%  
U.S. Information Solutions    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 432.9 459.4
Change in revenue $ (26.5)  
Change in revenue (as a percent) (6.00%)  
U.S. Information Solutions | Online Information Solutions    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 343.8 352.0
Change in revenue $ (8.2)  
Change in revenue (as a percent) (2.00%)  
U.S. Information Solutions | Mortgage Solutions    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 43.4 54.1
Change in revenue $ (10.7)  
Change in revenue (as a percent) (20.00%)  
U.S. Information Solutions | Financial Marketing Services    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 45.7 53.3
Change in revenue $ (7.6)  
Change in revenue (as a percent) (14.00%)  
International    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 281.3 266.4
Change in revenue $ 14.9  
Change in revenue (as a percent) 6.00%  
International | Asia Pacific    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 86.5 87.0
Change in revenue $ (0.5)  
Change in revenue (as a percent) (1.00%)  
International | Europe    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 85.8 77.0
Change in revenue $ 8.8  
Change in revenue (as a percent) 11.00%  
International | Canada    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 61.6 60.7
Change in revenue $ 0.9  
Change in revenue (as a percent) 1.00%  
International | Latin America    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 47.4 $ 41.7
Change in revenue $ 5.7  
Change in revenue (as a percent) 14.00%