Hedging Transactions and Derivative Financial Instruments - Notional Values of Derivative Instruments (Detail) (EUR €) In Thousands, unless otherwise specified	Mar. 31, 2013
Copper January 2013 - December 2013 [Member]
Derivative [Line Items]
Notional Value of Copper Derivatives	55
Copper July 2013 - November 2013 [Member]
Derivative [Line Items]
Notional Value of Copper Derivatives	40
YEN/USD Notional Amount of Foreign Currency Derivatives [Member]
Derivative [Line Items]
Notional Amount of Foreign Currency Derivatives	250,000,000
YEN/EUR Notional Amount of Foreign Currency Derivatives [Member]
Derivative [Line Items]
Notional Amount of Foreign Currency Derivatives	150,000,000
USD/EUR Notional Amount of Foreign Currency Derivatives [Member]
Derivative [Line Items]
Notional Amount of Foreign Currency Derivatives	1,000,000
HUF/EUR Notional Amount of Foreign Currency Derivatives [Member]
Derivative [Line Items]
Notional Amount of Foreign Currency Derivatives	253,000,000
EUR/USD Notional Amount of Foreign Currency Derivatives [Member]
Derivative [Line Items]
Notional Amount of Foreign Currency Derivatives	41,000