Employee Benefits - Weighted-Average Actuarial Assumption Used to Determine Expense (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.70%	5.60%	6.10%
Expected return on plan assets	7.30%	7.75%	7.75%
Rate of compensation increase	3.25%	3.25%	3.25%
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.71%	5.37%	5.66%
Expected return on plan assets	6.27%	6.55%	6.63%
Rate of compensation increase	2.88%	2.66%	3.00%