Assumptions Used to Determine Net Periodic Benefit Cost and Benefit Obligations (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
U.S. Plans
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items]
Net periodic benefit cost discount rate	4.60%	5.30%	5.70%
Net periodic benefit cost expected long-term rate of return on plan assets	8.00%	7.80%	7.80%
Benefit obligations discount rate	3.80%	4.60%	5.30%
Non-U.S. Plans
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items]
Net periodic benefit cost discount rate	4.80%	5.40%	5.70%
Net periodic benefit cost expected long-term rate of return on plan assets	6.30%	6.80%	7.20%
Net periodic benefit cost rate of compensation increases	3.00%	3.60%	3.80%
Benefit obligations discount rate	4.20%	4.80%	5.40%
Benefit obligations rate of compensation increases	3.00%	3.00%	3.60%
Other Postretirement Benefits
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items]
Net periodic benefit cost discount rate	4.80%	5.50%	6.00%
Benefit obligations discount rate	4.30%	4.80%	5.50%