Financial Instruments (Details) In Millions, unless otherwise specified	Mar. 31, 2012 USD ($)	Mar. 31, 2012 Maturity October 2019 Currency Swap [Member] USD ($)	Mar. 31, 2012 Maturity October 2019 Currency Swap [Member] EUR (€)	Dec. 31, 2011 Maturity October 2019 Currency Swap [Member] USD ($)	Dec. 31, 2011 Maturity October 2019 Currency Swap [Member] EUR (€)	Mar. 31, 2012 Maturity November 2016 Currency Swap [Member] USD ($)	Mar. 31, 2012 Maturity November 2016 Currency Swap [Member] JPY (¥)	Dec. 31, 2011 Maturity November 2016 Currency Swap [Member] USD ($)	Dec. 31, 2011 Maturity November 2016 Currency Swap [Member] JPY (¥)	Mar. 31, 2012 Natural Gas [Member] Maturity December 2012	Dec. 31, 2011 Natural Gas [Member] Maturity December 2012	Mar. 31, 2012 Functional Currency British Pound Maturity December 2013 EUR (€)	Dec. 31, 2011 Functional Currency British Pound Maturity December 2013 EUR (€)	Mar. 31, 2012 Functional Currency Euro Maturity December 2012 GBP (£)	Mar. 31, 2012 Functional Currency Euro Maturity December 2012 HUF	Mar. 31, 2012 Functional Currency Euro Maturity December 2012 JPY (¥)	Mar. 31, 2012 Functional Currency Euro Maturity December 2012 PLN	Dec. 31, 2011 Functional Currency Euro Maturity December 2012 GBP (£)	Dec. 31, 2011 Functional Currency Euro Maturity December 2012 HUF	Dec. 31, 2011 Functional Currency Euro Maturity December 2012 JPY (¥)	Dec. 31, 2011 Functional Currency Euro Maturity December 2012 PLN	Mar. 31, 2012 Functional Currency Euro Maturity January 2013 USD ($)	Dec. 31, 2011 Functional Currency Euro Maturity January 2013 USD ($)	Mar. 31, 2012 Functional Currency Japanese Yen Maturity December 2012 USD ($)	Dec. 31, 2011 Functional Currency Japanese Yen Maturity December 2012 USD ($)	Mar. 31, 2012 Functional Currency Korean Won Maturity December 2012 EUR (€)	Dec. 31, 2011 Functional Currency Korean Won Maturity December 2012 EUR (€)	Mar. 31, 2012 Functional Currency Korean Won Maturity December 2013 EUR (€)	Dec. 31, 2011 Functional Currency Korean Won Maturity December 2013 EUR (€)	Mar. 31, 2012 Functional Currency Mexican Peso Maturity December 2012 USD ($)	Dec. 31, 2011 Functional Currency Mexican Peso Maturity December 2012 USD ($)	Mar. 31, 2012 Functional Currency Mexican Peso Maturity Of Derivatives Period Four [Member] EUR (€)	Dec. 31, 2011 Functional Currency Mexican Peso Maturity Of Derivatives Period Four [Member] EUR (€)	Mar. 31, 2012 Functional Currency Swedish Krona Maturity December 2012 EUR (€)	Dec. 31, 2011 Functional Currency Swedish Krona Maturity December 2012 EUR (€)	Mar. 31, 2012 Functional Currency US Dollar Maturity December 2012 EUR (€)	Dec. 31, 2011 Functional Currency US Dollar Maturity December 2012 EUR (€)	Mar. 31, 2012 Functional Currency US Dollar Maturity Of Derivatives Period Four [Member] JPY (¥)	Dec. 31, 2011 Functional Currency US Dollar Maturity Of Derivatives Period Four [Member] JPY (¥)
Derivative [Line Items]
Derivative Contract With Credit Risk Contingent Features	$ 0
Notional Amount of Derivatives, Total [Abstract]
Notional amount of cross currency swaps		75.0	58.5	75.0	58.5	150.0	17,581.5	150.0	17,581.5
Commodity derivative contracts outstanding [Abstract]
Commodity volume hedged (in Metric tons/MMBTu)										264,311	0
Foreign exchange derivative contracts outstanding [Abstract]
Notional Amount of Foreign Currency Derivatives												€ 55.8	€ 64.8	£ 5.6	4,050.0	¥ 1,809.7	24.5	£ 7.0	5,400.0	¥ 0	24.5	$ 14.7	$ 16.1	$ 5.8	$ 7.4	€ 10.6	€ 2.4	€ 34.5	€ 34.5	$ 30.9	$ 40.7	€ 5.3	€ 9.2	€ 5.1	€ 6.1	€ 2.3	€ 3.0	¥ 3,000.0	¥ 3,000.0
Number of Fixed to Floating Interest Rate Swap Contracts	0