Weighted Average Assumptions Used to Determine Net Periodic Benefit Cost of Plans (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
U S Plans
Schedule of Benefit Obligations Weighted Average Assumptions [Line Items]
Discount rate	4.45%	5.20%	5.80%
Expected return on plan assets	8.00%	8.25%	8.50%
Rate of compensation increase	3.90%	3.90%	3.89%
Non U S Plans
Schedule of Benefit Obligations Weighted Average Assumptions [Line Items]
Discount rate	4.68%	5.35%	5.88%
Expected return on plan assets	5.90%	6.17%	6.28%
Rate of compensation increase	2.96%	3.37%	3.35%