Pensions and Other Postretirement Benefits Measurement Assumptions (Detail)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Pension Benefits, U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit Obligation, Discount Rate	5.40%	5.80%
Benefit Obligation, Rate of Compensation Increase	4.00%	4.00%
Net Periodic Benefit Cost, Discount Rate	5.80%	6.40%
Net Periodic Benefit Cost, Expected Long-term Return on Assets	7.50%	7.50%
Net Periodic Benefit Cost, Rate of Compensation Increase	4.00%	4.00%
Pension Benefits, Non U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit Obligation, Discount Rate	4.90%	5.60%
Benefit Obligation, Rate of Compensation Increase	3.85%	4.50%
Net Periodic Benefit Cost, Discount Rate	5.60%	5.70%
Net Periodic Benefit Cost, Expected Long-term Return on Assets	6.70%	6.90%
Net Periodic Benefit Cost, Rate of Compensation Increase	4.50%	4.50%
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit Obligation, Discount Rate	5.20%	5.60%
Benefit Obligation, Rate of Compensation Increase	0.00%	0.00%
Net Periodic Benefit Cost, Discount Rate	5.60%	5.90%
Net Periodic Benefit Cost, Expected Long-term Return on Assets	5.75%	5.75%
Net Periodic Benefit Cost, Rate of Compensation Increase	0.00%	0.00%