Summary of Weighted Average Assumptions Used in Determining Pension Costs (Detail)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
U.S. Benefit Plans
Schedule of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	4.20%		5.00%
Rate of increase in compensation levels	3.50%		3.50%
U.S. Benefit Plans | Pension Plans, Defined Benefit
Schedule of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	5.00%		5.80%		6.00%
Rate of increase in compensation levels	3.50%	[1]	3.50%	[1]	3.50%	[1]
Expected long term rate of return on plan assets	8.10%		8.20%		8.50%
Non-U.S. Benefit Plan
Schedule of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	4.10%		4.60%
Non-U.S. Benefit Plan | Pension Plans, Defined Benefit
Schedule of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	4.60%		5.40%		5.70%
Expected long term rate of return on plan assets	5.30%		6.50%		6.50%

[1] Non-U.S. plan benefits are not adjusted for compensation level changes.