Postretirement Benefit Plans - Weighted-Average Assumptions used to Determine Benefit Obligations (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cost Assumptions:
Expected return on plan assets	8.00%	8.00%	9.00%
U.S. Pension Plans [Member]
Obligation Assumptions:
Discount rate	4.80%	4.10%
Cost Assumptions:
Discount rate	4.10%	4.80%
Expected return on plan assets	8.00%	8.00%
International Pension Plan [Member]
Obligation Assumptions:
Discount rate	3.20%	3.10%
Rate of future compensation increase	3.40%	3.20%
Cost Assumptions:
Discount rate	3.10%	4.80%
Expected return on plan assets	4.70%	4.70%