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Derivative Instruments and Risk Management (Details 1) (Designated as Hedging Instrument [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Summary of impact on the income statement of derivatives designated as hedging instruments
Gain/(loss) recognized in OCI on derivative, net	$ 0.1
Amount of gain/(loss) reclassified from accumulated OCI into income, net	0.2
Commodity Contract [Member]
Summary of impact on the income statement of derivatives designated as hedging instruments
Gain/(loss) recognized in OCI on derivative	0.1
Cost of goods sold [Member]
Summary of impact on the income statement of derivatives designated as hedging instruments
Amount of gain/(loss) reclassified from accumulated OCI into income	0.3
Income Taxes [Member]
Summary of impact on the income statement of derivatives designated as hedging instruments
Amount of gain/(loss) reclassified from accumulated OCI into income, tax	(0.1)
Taxation [Member]
Summary of impact on the income statement of derivatives designated as hedging instruments
Gain/(loss) recognized in OCI on derivative, tax	$ 0

X

- Definition

Amount of gain/(loss) reclassified from accumulated other comprehensive income into income, before tax effects.

+ References

No definition available.

+ Details

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X

- Definition

Tax effect of amount of gain/(loss) reclassified from accumulated other comprehensive income into income.

+ References

No definition available.

+ Details

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X

- Definition

Gain/(loss) recognized in other comprehensive income on derivative, before tax effects.

+ References

No definition available.

+ Details

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- Definition

Tax effect of gain/(loss) recognized in other comprehensive income on derivative.

+ References

No definition available.

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44C

-Subparagraph b

-Clause 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4D

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624177-113959

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X

- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44C

-Subparagraph b

-Clause 2

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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