Derivatives (Details 1) lb in Millions, MXN in Millions	Sep. 30, 2015 MXN lb	Dec. 31, 2014 MXN lb
Designated as Hedging Instrument [Member] \| Commodity Futures Contracts [Member] \| Copper [Member]
Derivative [Line Items]
Derivative, nonmonetary notional amount	29.0	29.4
Designated as Hedging Instrument [Member] \| Foreign Exchange Forward [Member] \| Mexico, Pesos
Derivative [Line Items]
Derivative, notional amount \| MXN	MXN 250.9	MXN 0.0
Not Designated as Hedging Instrument [Member] \| Commodity Futures Contracts [Member] \| Copper [Member]
Derivative [Line Items]
Derivative, nonmonetary notional amount	3.3	2.9
Not Designated as Hedging Instrument [Member] \| Commodity Futures Contracts [Member] \| Aluminum [Member]
Derivative [Line Items]
Derivative, nonmonetary notional amount	2.5	2.2
Not Designated as Hedging Instrument [Member] \| Foreign Exchange Forward [Member] \| Mexico, Pesos
Derivative [Line Items]
Derivative, notional amount \| MXN	MXN 0.0	MXN 229.7

- 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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Namespace Prefix:	invest_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- 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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Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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