Income Taxes - Additional Information (Detail)	3 Months Ended				6 Months Ended			3 Months Ended		6 Months Ended				6 Months Ended		3 Months Ended				3 Months Ended	12 Months Ended		3 Months Ended					6 Months Ended		12 Months Ended				12 Months Ended			6 Months Ended
	Mar. 31, 2013 USD ($)	Mar. 31, 2013 EUR (€)	Sep. 30, 2012 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2013 EUR (€)	Jun. 30, 2013 Spanish tax settlement [Member]	Jun. 30, 2012 Spanish tax settlement [Member]	Jun. 30, 2013 Spanish tax settlement [Member]	Jun. 30, 2012 Spanish tax settlement [Member]	Jun. 30, 2012 Spanish tax withholding [Member] USD ($)	Jun. 30, 2013 Spanish tax withholding [Member] USD ($)	Jun. 30, 2013 U.S. tax legislation enacted [Member] USD ($)	Jun. 30, 2012 Corporate restructuring [Member] USD ($)	Sep. 30, 2013 Subsequent Event [Member] USD ($)	Sep. 30, 2013 Subsequent Event [Member] EUR (€)	Jun. 30, 2013 Other liabilities [Member] USD ($)	Jun. 30, 2013 Other current liabilities [Member] USD ($)	Sep. 30, 2012 2004-2010 [Member] USD ($)	Dec. 31, 2012 2004-2010 [Member] Spanish tax settlement [Member] USD ($)	Dec. 31, 2012 2004-2010 [Member] Spanish tax settlement [Member] EUR (€)	Mar. 31, 2013 2002-2003 [Member] USD ($)	Jun. 30, 2013 2002-2003 [Member] USD ($)	Jun. 30, 2013 2002-2003 [Member] EUR (€)	Jun. 30, 2013 2002-2003 [Member] Spanish tax settlement [Member] USD ($)	Jun. 30, 2013 2002-2003 [Member] Spanish tax settlement [Member] EUR (€)	Jun. 30, 2013 2002-2003 [Member] Minimum [Member]	Jun. 30, 2013 2002-2003 [Member] Maximum [Member]	Dec. 31, 2012 1995-2001 [Member] USD ($)	Jun. 30, 2013 1995-2001 [Member] USD ($)	Jun. 30, 2013 1995-2001 [Member] EUR (€)	Dec. 31, 2012 1995-2001 [Member] EUR (€)	Dec. 31, 2012 1995-2001 [Member] Minimum [Member]	Dec. 31, 2012 1995-2001 [Member] Maximum [Member]	Jun. 30, 2013 2002-2011 [Member] Spanish tax settlement [Member] USD ($)	Jun. 30, 2013 2007-2012 [Member] Minimum [Member]	Jun. 30, 2013 2007-2012 [Member] Maximum [Member]
Income Taxes [Line Items]
Unrecognized tax benefits that would impact effective tax rate																		$ 23,600,000	$ 4,700,000
Reduction in accrual for interest and penalties					4,800,000
Accrued interest and penalties																		2,600,000	100,000
Payments pursuant to Spanish tax settlement	1,900,000	1,500,000																			105,500,000	84,000,000
Overall Spanish tax settlement			72,400,000																	56,000,000
Increase in liabilities, uncertain tax positions			16,400,000
Assessment imposed					23,300,000		17,700,000																	6,100,000	4,700,000	28,600,000	22,400,000			12,800,000	5,800,000	4,500,000	9,800,000
Bank guarantees needed to be posted to proceed with tax appeals																								6,100,000	4,700,000						9,800,000	7,500,000
Income tax examination, years under examination																												2002	2003								2007	2012
Charges associated with issues in 2002-2003 cases																							9,300,000
Partial offset adjustment to prior accruals	3,100,000
Income taxes payable					4,000,000
Income tax payment related to tax assessment subsequent to current period																4,000,000	3,100,000
Provision for uncertain tax positions					31,000,000								3,700,000																		4,100,000	3,200,000				7,000,000
After tax expense due to the recognition of out-of-period tax adjustments																														12,000,000
Income tax examination, years under examination																																		1995	2001
Effective tax rate								27.30%	27.70%	28.00%	27.20%
Additional tax provision recorded																								6,200,000
Effective tax rate increased partially offset by income tax benefit														4,600,000
Deferred income tax					4,971,000	(13,786,000)						12,900,000
Income tax charge associated withholding tax cases															10,600,000
R&D tax credit					900,000
Provision related to dividend withholding tax case and other adjustments on uncertain tax positions				$ 4,700,000