Quarterly report pursuant to Section 13 or 15(d)

REVENUE - Disaggregation of Revenue (Details)

v3.23.1
REVENUE - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Disaggregation of Revenue [Line Items]    
Operating revenue $ 1,302.0 $ 1,363.2
Change in revenue $ (61.2)  
Change in revenue (as a percent) (4.00%)  
Workforce Solutions    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 596.3 649.0
Change in revenue $ (52.7)  
Change in revenue (as a percent) (8.00%)  
Workforce Solutions | Verification Services    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 455.8 513.3
Change in revenue $ (57.5)  
Change in revenue (as a percent) (11.00%)  
Workforce Solutions | Employer Services    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 140.5 135.7
Change in revenue $ 4.8  
Change in revenue (as a percent) 4.00%  
U.S. Information Solutions    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 421.7 432.9
Change in revenue $ (11.2)  
Change in revenue (as a percent) (3.00%)  
U.S. Information Solutions | Online Information Solutions    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 341.0 343.8
Change in revenue $ (2.8)  
Change in revenue (as a percent) (1.00%)  
U.S. Information Solutions | Mortgage Solutions    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 33.3 43.4
Change in revenue $ (10.1)  
Change in revenue (as a percent) (23.00%)  
U.S. Information Solutions | Financial Marketing Services    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 47.4 45.7
Change in revenue $ 1.7  
Change in revenue (as a percent) 4.00%  
International    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 284.0 281.3
Change in revenue $ 2.7  
Change in revenue (as a percent) 1.00%  
International | Asia Pacific    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 89.9 86.5
Change in revenue $ 3.4  
Change in revenue (as a percent) 4.00%  
International | Europe    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 75.7 85.8
Change in revenue $ (10.1)  
Change in revenue (as a percent) (12.00%)  
International | Canada    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 63.1 61.6
Change in revenue $ 1.5  
Change in revenue (as a percent) 2.00%  
International | Latin America    
Disaggregation of Revenue [Line Items]    
Operating revenue $ 55.3 $ 47.4
Change in revenue $ 7.9  
Change in revenue (as a percent) 17.00%