Employee Benefit Plan - Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Domestic Pension Benefits [Member]
Net Periodic Benefit Cost Assumptions [Line Items]
Discount rate	4.25%	5.00%	5.51%
Foreign Pension Benefits [Member]
Net Periodic Benefit Cost Assumptions [Line Items]
Discount rate	4.68%	5.34%	5.93%
Rate of compensation increase	3.26%	3.64%	3.50%
Expected return on plan assets	6.31%	6.52%	6.56%
Postretirement Benefits [Member]
Net Periodic Benefit Cost Assumptions [Line Items]
Discount rate	4.00%	4.75%	5.50%
Expected return on plan assets	0.00%	7.10%	7.10%