Quarterly report pursuant to Section 13 or 15(d)

SEGMENT INFORMATION - Operating Revenue and Operating Income by Operating Segment (Details)

v3.21.2
SEGMENT INFORMATION - Operating Revenue and Operating Income by Operating Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Segment Reporting Information [Line Items]        
Operating revenue $ 1,234.8 $ 982.8 $ 2,447.8 $ 1,940.8
Operating income 306.0 166.8 612.6 302.7
General Corporate Expense        
Segment Reporting Information [Line Items]        
Operating income (126.5) (122.1) (266.2) (255.7)
Workforce Solutions        
Segment Reporting Information [Line Items]        
Operating revenue 495.7 352.9 976.5 654.6
Workforce Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue     976.5 654.6
Operating income 265.2 174.2 529.9 307.7
U.S. Information Solutions        
Segment Reporting Information [Line Items]        
Operating revenue 405.8 365.6 815.2 708.8
U.S. Information Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue     815.2 708.8
Operating income 126.1 113.1 265.8 220.7
International        
Segment Reporting Information [Line Items]        
Operating revenue 250.9 180.5 492.3 396.5
International | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue     492.3 396.5
Operating income 29.3 (6.2) 57.2 9.1
Global Consumer Solutions        
Segment Reporting Information [Line Items]        
Operating revenue 82.4 83.8 163.8 180.9
Global Consumer Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue     163.8 180.9
Operating income $ 11.9 $ 7.8 $ 25.9 $ 20.9