XML 1134 R76.htm IDEA: XBRL DOCUMENT v3.3.1.900
Commitments and Contingencies, additional lease information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Commitments And Contingencies Disclosure      
Rent expense, noncancellable long-term operating lease $ 168.4 $ 177.0 $ 187.4
Rent expense, cancellable short-term operating lease $ 10.8 $ 8.8 $ 12.5