Schedule of Reconciliation of Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Line Items]
U.S. statutory federal tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	(1.70%)		0.40%
Foreign taxes	(11.50%)	(12.60%)	(13.90%)
Valuation allowance	(0.50%)	(87.70%)	(17.40%)
Other U.S. permanent items	(2.80%)	5.70%
Other, net	(0.10%)	(0.80%)	0.10%
Effective tax rate, Total	18.40%	(60.40%)	4.20%