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Rationalization Charges According to Plans (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Restructuring Cost and Reserve [Line Items]
Rationalization charges	$ 2,900	$ 600	$ 2,400	$ 1,700	$ 18,500	$ 1,000	$ 700	$ 2,000	$ 7,717	$ 22,214	$ 1,491
2011 Rationalization plans
Restructuring Cost and Reserve [Line Items]
Rationalization charges									1,925
2010 Rationalization plans
Restructuring Cost and Reserve [Line Items]
Rationalization charges									4,404	21,439
2009 and prior years' rationalization plans
Restructuring Cost and Reserve [Line Items]
Rationalization charges									$ 1,388	$ 775	$ 1,491

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- Definition

The aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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