Employee Benefits (Detail) - Assumptions Used in Computation of Net Periodic Pension Expense	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Weighted-average discount rate (1)	3.20%	[1]	4.40%	[1]	3.95%	[1]
Average compensation increase	2.70%		2.65%		2.80%

[1] Discount rates are typically determined by utilizing the yields on long-term corporate or government bonds in the relevant country with a duration consistent with the expected term of the underlying pension obligations.