Quarterly report pursuant to Section 13 or 15(d)

Contingencies - Additional Information (Detail)

v2.4.0.8
Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Contingencies And Commitments [Line Items]    
Maximum exposure associated with general indemnifications $ 16.8 $ 14.0
General indemnifications minimum expiration period 1 year  
General indemnifications maximum expiration period 2 years  
Joint venture ownership percentage 50.00%  
Contingent liability reserve balance after reduction 2.8 2.8
Other Accrued Liabilities [Member]
   
Contingencies And Commitments [Line Items]    
Amount reserved for pending proceedings 1.3 0.3
Other Long-Term Liabilities [Member]
   
Contingencies And Commitments [Line Items]    
Amount reserved for pending proceedings $ 0.3 $ 0.9