XML 84 R65.htm IDEA: XBRL DOCUMENT v2.4.0.8
Asset Impairment Charges - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2013
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Asset Impairment Charges [Line Items]          
Asset impairment charge $ 6.2 $ 21.2 $ 21.2 $ 15.8 $ 90.0