Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
SEGMENT INFORMATION (Operating Revenue and Operating Income by Operating Segment) (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
segment
Jun. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
Segment Reporting Information [Line Items]          
Operating revenue: $ 811.3 $ 678.1 $ 1,539.6 $ 1,329.9  
Operating income: 225.7 188.5 401.9 342.7  
Total assets: 6,640.8   $ 6,640.8   $ 4,501.5
Number of reporting segments | segment     4    
Number of operating segments | segment     4    
General Corporate Expense          
Segment Reporting Information [Line Items]          
Operating income: (46.1) (48.5) $ (117.6) (126.9)  
Total assets: 364.2   364.2   321.0
U.S. Information Solutions | Operating Segments          
Segment Reporting Information [Line Items]          
Operating revenue: 307.9 298.2 602.8 582.7  
Operating income: 134.0 128.0 256.8 251.1  
Total assets: 1,846.0   1,846.0   1,869.6
International | Operating Segments          
Segment Reporting Information [Line Items]          
Operating revenue: 218.8 145.1 376.9 280.5  
Operating income: 33.7 28.5 53.0 55.6  
Total assets: 2,958.8   2,958.8   844.5
Workforce Solutions | Operating Segments          
Segment Reporting Information [Line Items]          
Operating revenue: 177.3 146.3 357.4 295.0  
Operating income: 78.3 56.0 156.9 116.0  
Total assets: 1,275.0   1,275.0   1,268.5
Global Consumer Solutions | Operating Segments          
Segment Reporting Information [Line Items]          
Operating revenue: 107.3 88.5 202.5 171.7  
Operating income: 25.8 $ 24.5 52.8 $ 46.9  
Total assets: $ 196.8   $ 196.8   $ 197.9