Income Taxes - Schedule of Earnings before Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Before Income Taxes [Line Items]
U.S. loss before taxes	$ (21,308)	$ (5,854)	$ (82,112)
Foreign income before taxes	464,723	379,400	441,705
Income before taxes	$ 443,415	$ 373,546	$ 359,593