XML 116 R120.htm IDEA: XBRL DOCUMENT v2.4.0.8
Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Valuation and Qualifying Accounts Disclosure [Line Items]    
Accruals, Relating to environmental compliance and clean up $ 5.6 $ 6.8