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Financial Instruments - Derivatives (Details) € in Millions, ₩ in Millions, ¥ in Millions, ¥ in Millions, £ in Millions, $ in Millions | 9 Months Ended |  |
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Sep. 30, 2015 USD ($) t | Sep. 30, 2015 JPY (¥) | Sep. 30, 2015 KRW (₩) | Sep. 30, 2015 CNY (¥) | Sep. 30, 2015 EUR (€) | Sep. 30, 2015 GBP (£) | Dec. 31, 2014 USD ($) | Dec. 31, 2014 JPY (¥) | Dec. 31, 2014 KRW (₩) | Dec. 31, 2014 CNY (¥) | Dec. 31, 2014 EUR (€) | Dec. 31, 2014 GBP (£)
Foreign currency | Chinese yuan | Maturity December 2016 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | $ 17.0 |  |  |  | € 38.8 |  | $ 24.9 |  |  |  | € 0.0 |
Foreign currency | Euro | Maturity December 2015 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | £ |  |  |  |  |  | £ 1.4 |  |  |  |  |  | £ 5.7
Foreign currency | Euro | Maturity February 2016 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | ¥ |  | ¥ 1,571.7 |  |  |  |  |  | ¥ 4,371.8 |  |  |  |
Foreign currency | Euro | Maturity December 2016 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | 33.6 |  |  |  |  |  | 23.5 |  |  |  |  |
Foreign currency | Japanese yen | Maturity December 2015 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | 1.0 |  | ₩ 1,641.2 | ¥ 23.4 |  |  | 3.8 |  | ₩ 6,712.5 | ¥ 88.6 |  |
Foreign currency | Korean won | Maturity December 2015 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives |  | ¥ 283.0 |  |  | 4.7 |  |  | ¥ 72.0 |  |  | 2.5 |
Foreign currency | Korean won | Maturity December 2016 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | 28.6 |  |  |  |  |  | 22.7 |  |  |  |  |
Foreign currency | Mexican peso | Maturity December 2015 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | $ 3.4 |  |  |  |  |  | $ 22.6 |  |  |  |  |
Foreign currency | Swedish krona | Maturity December 2015 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | € |  |  |  |  | 8.0 |  |  |  |  |  | 31.4 |
Foreign currency | US dollar | Maturity December 2015 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | € |  |  |  |  | € 500.0 |  |  |  |  |  | € 0.0 |
Commodity contracts | Maturity December 2016 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of copper commodity contracts | t | 362.2 |  |  |  |  |  |  |  |  |  |  |
Interest rate swap | Maturity September 2020 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | $ 250.0 |  |  |  |  |  |  |  |  |  |  |
Interest rate swap | Maturity October 2019 |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Notional amount of currency derivatives | $ 134.0 |  |  |  |  |  |  |  |  |  |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + 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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