Pension and Other Postretirement Benefits - Assumptions Regarding Benefit Obligations (Detail)	Dec. 31, 2013	Dec. 31, 2012
U.S. Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.00%	4.25%
Weighted-average rate of increases in compensation	4.00%	4.00%
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.50%	4.50%
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.00%	4.25%