XML 63 R72.htm IDEA: XBRL DOCUMENT v2.4.0.8
Leases - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Leases Disclosure [Line Items]      
Rental expenses $ 34.1 $ 29.1 $ 29.0
Leased Equipment
     
Leases Disclosure [Line Items]      
Minimum lease payments for operating leases, in 2013 23.4    
Minimum lease payments for operating leases, in 2014 18.9    
Minimum lease payments for operating leases, in 2015 12.6    
Minimum lease payments for operating leases, in 2016 8.6    
Minimum lease payments for operating leases, in 2017 6.1    
Minimum lease payments for operating leases, thereafter $ 2.4