Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
SEGMENT INFORMATION - Operating Revenue and Operating Income by Operating Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Segment Reporting Information [Line Items]        
Operating revenue $ 834.8 $ 804.1 $ 2,523.8 $ 2,343.8
Operating income 152.9 212.1 633.8 614.0
General Corporate Expense        
Segment Reporting Information [Line Items]        
Operating income (134.5) (51.6) (245.5) (169.2)
U.S. Information Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue 307.7 317.4 949.7 920.2
Operating income 129.5 139.5 408.9 396.3
International | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue 239.8 214.3 687.5 591.2
Operating income 52.9 26.3 128.8 79.3
Workforce Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue 186.4 171.3 580.9 528.7
Operating income 80.3 69.9 258.7 226.9
Global Consumer Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating revenue 100.9 101.1 305.7 303.7
Operating income $ 24.7 $ 28.0 $ 82.9 $ 80.7