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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 (¥)
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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

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- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Nominal or face amount used to calculate payments on the derivative asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 + Details
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