Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Fair Value Measurements Of Financial Instruments [Line Items]
Notional amount of the FX Contracts outstanding	$ 47.3	$ 58.4
2011 Revolving Credit Facility [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Standby and trade letters of credit for various corporate purposes	10.4	11.1
Standby Letters Of Credit Which Support Products Corporations Self Insurance Programs [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Standby and trade letters of credit for various corporate purposes	$ 8.7	$ 9.1

Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Name:	us-gaap_NotionalAmountOfForeignCurrencyDerivatives
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant