Hedging Transactions and Derivative Financial Instruments (Notional Values of Derivative Instruments) (Details)	Mar. 31, 2014 Copper January 2014 - April 2014 [Member]	Mar. 31, 2014 Copper, January 2014 - June 2014 [Member]	Mar. 31, 2014 Copper, May 2014 -December 2014 [Member]	Mar. 31, 2014 Copper, January 2014 - December 2014 [Member]	Mar. 31, 2014 Copper, January 2014 - December 2014 II [Member]	Mar. 31, 2014 Copper, July 2014 - December 2014 [Member]	Mar. 31, 2014 Copper, July 2014 - December 2014 II [Member]	Mar. 31, 2014 Copper, October 2014 - December 2014 [Member]	Mar. 31, 2014 Copper, July 2014 - September 2014 [Member]	Mar. 31, 2014 Copper, January 2014 - June 2014 II [Member]	Mar. 31, 2014 Copper, July 2014 - September 2014 II [Member]	Mar. 31, 2014 Copper, January 2015 - March 2015 [Member]	Mar. 31, 2014 Copper, January 2015 - March 2015 II [Member]	Mar. 31, 2014 Copper, January 2015 - March 2015 III [Member]	Mar. 31, 2014 Copper, April 2015 - June 2015 [Member]	Mar. 31, 2014 Copper, April 2014 - June 2014 [Member]	Mar. 31, 2014 Copper, July 2014 - December 2014 III [Member]	Mar. 31, 2014 Copper, January 2014 - December 2014 III [Member]	Mar. 31, 2014 Copper, July 2014 - December 2014 IV [Member]	Mar. 31, 2014 Copper, October 2014 - December 2014 II [Member]	Mar. 31, 2014 Copper, January 2015 - March 2015 IV [Member]	Mar. 31, 2014 YEN/USD Notional Amount of Foreign Currency Derivatives [Member] JPY (¥)	Mar. 31, 2014 HUF/Eur Notional Amount of Foreign Currency Derivatives [Member] HUF	Mar. 31, 2014 USD/Eur Notional Amount of Foreign Currency Derivatives [Member] USD ($)	Mar. 31, 2014 Yen/Eur Notional Amount of Foreign Currency Derivatives [Member] JPY (¥)	Mar. 31, 2014 Yen/Eur Notional Amount of Foreign Currency Derivatives II [Member] JPY (¥)
Derivative [Line Items]
Notional Value of Copper Derivatives	30	35	30	10	5	15	5	15	20	40	20	8	52	46	95	35	35	10	25	20	40
Notional Amount of Foreign Currency Derivatives																						¥ 200,000,000	230,000,000	$ 1,600,000,000	¥ 360,000,000,000	¥ 23,100,000,000