Financial Instruments - Additional Information (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
2011 Revolving Credit Facility Due 2016 [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Standby and trade letters of credit for various corporate purposes	$ 9.8	$ 10.4
Standby Letters Of Credit Which Support Products Corporations Self Insurance Programs [Member] | 2011 Revolving Credit Facility Due 2016 [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Standby and trade letters of credit for various corporate purposes	8.2	8.7
Foreign Exchange Contract [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Notional amount of the FX Contracts outstanding	$ 51.7	$ 43.9