XML 80 R69.htm IDEA: XBRL DOCUMENT v3.10.0.1
Segment Information - Revenue, Properties and Outsourcing Assets by Geographic Segment (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues $ 688.3 $ 666.3 $ 2,064.1 $ 1,997.0
United States        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 313.2 313.2 905.0 955.5
United Kingdom        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues 82.0 65.8 277.7 211.3
Other foreign        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Revenues $ 293.1 $ 287.3 $ 881.4 $ 830.2