Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.3
SEGMENT INFORMATION - Schedule of Operating Revenue and Operating Income by Operating Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Segment Reporting Information [Line Items]        
Operating revenue $ 1,319.1 $ 1,244.3 $ 3,938.7 $ 3,924.3
Operating income 246.4 242.9 688.5 880.0
General Corporate Expense        
Segment Reporting Information [Line Items]        
Operating income (124.7) (112.6) (424.4) (367.9)
Workforce Solutions        
Segment Reporting Information [Line Items]        
Operating revenue 577.2 558.9 1,756.3 1,817.1
Workforce Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating income 241.2 231.0 734.6 820.6
U.S. Information Solutions        
Segment Reporting Information [Line Items]        
Operating revenue 426.0 397.4 1,292.7 1,251.8
U.S. Information Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating income 89.7 82.0 271.1 315.4
International        
Segment Reporting Information [Line Items]        
Operating revenue 315.9 288.0 889.7 855.4
International | Operating Segments        
Segment Reporting Information [Line Items]        
Operating income $ 40.2 $ 42.5 $ 107.2 $ 111.9