Commitments, Contingencies and Guarantees - Additional Information (Detail) In Millions, unless otherwise specified	1 Months Ended	6 Months Ended	12 Months Ended					6 Months Ended
	Jul. 20, 2011 mi	Jun. 30, 2012 USD ($) ton	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2010 BRL	Dec. 31, 2009 USD ($)	Nov. 08, 2011 Oral Care Technology USD ($)	Jun. 30, 2012 Spain Facility USD ($)	Jun. 30, 2012 New Corporate Office Building USD ($)	Jul. 20, 2011 New Corporate Office Building Year
Commitments and Contingencies Disclosure [Line Items]
Lease term, years										20
Number of miles from existing corporate headquarters	10
Lease commitment amount									$ 116
Construction in progress related to new corporate office built to suit lease		34.4
Annual purchase commitment, in tons		240,000
Commitments to acquire raw materials		196.3
Outstanding letters of credit		4.1
Pension guarantee		18.6
Guarantees for value added tax		3.9
Guarantees for payment of lease rent								0.3
Lease expiration date								2012-11
Cash consideration							4.3
Potential advanced royalty payments							5.5
Potential license payment							7
Imposition of fine				2.5	5.0
Remediation and related costs				4.8		3.0
Remediation activities		2.4
Cost of landfill removal, minimum		30.0
Cost of landfill removal, maximum		50.0
Reasonably possible decrease in liabilities for uncertain income tax positions			5.7
Total reasonably possible decrease in liabilities for uncertain income tax positions		$ 7.4	$ 13.1