Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
SEGMENT INFORMATION - Operating Revenue and Operating Income by Operating Segment (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Segment Reporting Information [Line Items]        
Operating revenue $ 876.9 $ 856.7 $ 1,742.6 $ 1,689.0
Operating income 193.6 265.9 337.8 484.5
General Corporate Expense        
Segment Reporting Information [Line Items]        
Operating income (72.6) (46.3) (196.1) (107.4)
U.S. Information Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue 324.6 331.9 631.5 642.0
Operating income 126.3 149.7 237.2 279.4
International | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue 250.3 231.4 494.8 447.7
Operating income 37.0 46.1 73.7 75.9
Workforce Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue 207.6 194.5 418.7 394.5
Operating income 83.9 89.0 173.9 178.4
Global Consumer Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue 94.4 98.9 197.6 204.8
Operating income $ 19.0 $ 27.4 $ 49.1 $ 58.2