Income Taxes - Additional Information (Detail)	3 Months Ended		9 Months Ended				9 Months Ended				9 Months Ended													9 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2012 USD ($)	Sep. 30, 2012 EUR (€)	Sep. 30, 2011 USD ($)	Sep. 30, 2012 Spanish Income Tax [Member] USD ($)	Sep. 30, 2012 Spanish Tax Withholding [Member] USD ($)	Sep. 30, 2012 Foreign Subsidiaries [Member] USD ($)	Sep. 30, 2012 2002-2003 [Member] USD ($)	Sep. 30, 2012 2002-2003 [Member] EUR (€)	Sep. 30, 2012 2002-2003 [Member] Minimum	Sep. 30, 2012 2002-2003 [Member] Maximum	Sep. 30, 2012 2004-2006 [Member] USD ($)	Sep. 30, 2012 2004-2006 [Member] EUR (€)	Sep. 30, 2012 2004-2006 [Member] Minimum	Sep. 30, 2012 2004-2006 [Member] Maximum	Sep. 30, 2012 Two Thousand Seven To Two Thousand Eleven [Member] Minimum	Sep. 30, 2012 Two Thousand Seven To Two Thousand Eleven [Member] Maximum	Sep. 30, 2012 Two Thousand Four To Two Thousand Ten [Member] USD ($)	Sep. 30, 2012 Two Thousand Four To Two Thousand Ten [Member] Spanish Income Tax [Member] USD ($)	Sep. 30, 2012 Two Thousand Four To Two Thousand Ten [Member] Spanish Income Tax [Member] EUR (€)	Sep. 30, 2012 1995-2001 [Member] USD ($)	Sep. 30, 2012 1995-2001 [Member] EUR (€)	Sep. 30, 2012 1995-2001 [Member] Minimum	Sep. 30, 2012 1995-2001 [Member] Maximum	Sep. 30, 2012 Other Liabilities [Member] USD ($)	Sep. 30, 2012 Other Current Liabilities [Member] USD ($)
Income Taxes [Line Items]
Unrecognized tax benefits that would impact effective tax rate																										$ 34,600,000	$ 4,500,000
Income tax penalties and interest expense			5,400,000
Accrued interest and penalties																										7,300,000
Assessment imposed									28,300,000	22,000,000			78,300,000	62,800,000								24,000,000	18,700,000
Income tax examination, years under examination											2002	2003			2004	2006	2007	2011						1995	2001
Payments pursuant to Spanish tax settlement			105,503,000	84,000,000																105,700,000	86,000,000
After-tax charge			72,400,000																56,000,000
Increased liabilities for uncertain tax positions			16,400,000
Bank guarantees needed to be posted to proceed with tax appeals									27,800,000	21,600,000												12,300,000	9,600,000
Reduction amount related to outstanding bank guarantees													77,400,000	60,100,000
Expected reduction of bank guarantees			1,900,000	1,500,000
Tax expense due to the recognition of out-of-period tax adjustments																						14,300,000
After tax expense due to the recognition of out-of-period tax adjustments																						12,400,000
Provision for uncertain tax positions	46,400,000		46,400,000	3,600,000		23,300,000	3,600,000															8,400,000
Payments made related to unfavorable rulings on foreign tax appeals																						10,600,000
Amount of Interest related to unfavorable rulings on foreign tax appeals																						2,100,000
Number of dividend withholding tax controversies			4	4
Effective tax rate	86.60%	26.90%	47.60%	47.60%	27.20%
Adjustment to increase accrued income tax	2,600,000
Write-off of deferred tax assets		5,800,000
Deferred income tax			(13,830,000)		25,672,000		14,300,000	10,600,000
Adjustments on uncertain tax positions		$ 3,000,000