Financial Instruments - Foreign Currency Derivatives (Details) (Foreign currency contracts) In Millions, unless otherwise specified	Mar. 31, 2014 Brazil real Maturity December 2014 USD ($)	Dec. 31, 2013 Brazil real Maturity December 2014 USD ($)	Mar. 31, 2014 Chinese yuan Maturity December 2014 USD ($)	Dec. 31, 2013 Chinese yuan Maturity December 2014 USD ($)	Mar. 31, 2014 Chinese yuan Maturity February 2014 JPY (¥)	Dec. 31, 2013 Chinese yuan Maturity February 2014 JPY (¥)	Mar. 31, 2014 Euro Maturity December 2014 USD ($)	Mar. 31, 2014 Euro Maturity December 2014 GBP (£)	Mar. 31, 2014 Euro Maturity December 2014 HUF	Mar. 31, 2014 Euro Maturity December 2014 JPY (¥)	Mar. 31, 2014 Euro Maturity December 2014 PLN	Dec. 31, 2013 Euro Maturity December 2014 USD ($)	Dec. 31, 2013 Euro Maturity December 2014 GBP (£)	Dec. 31, 2013 Euro Maturity December 2014 HUF	Dec. 31, 2013 Euro Maturity December 2014 JPY (¥)	Dec. 31, 2013 Euro Maturity December 2014 PLN	Mar. 31, 2014 Euro Maturity July 2014 KRW	Dec. 31, 2013 Euro Maturity July 2014 KRW	Mar. 31, 2014 Hungarian forint Maturity December 2014 EUR (€)	Dec. 31, 2013 Hungarian forint Maturity December 2014 EUR (€)	Mar. 31, 2014 Japanese yen Maturity December 2014 USD ($)	Mar. 31, 2014 Japanese yen Maturity December 2014 CNY	Mar. 31, 2014 Japanese yen Maturity December 2014 KRW	Dec. 31, 2013 Japanese yen Maturity December 2014 USD ($)	Dec. 31, 2013 Japanese yen Maturity December 2014 CNY	Dec. 31, 2013 Japanese yen Maturity December 2014 KRW	Mar. 31, 2014 Korean won Maturity December 2014 USD ($)	Mar. 31, 2014 Korean won Maturity December 2014 EUR (€)	Dec. 31, 2013 Korean won Maturity December 2014 USD ($)	Dec. 31, 2013 Korean won Maturity December 2014 EUR (€)	Mar. 31, 2014 Korean won Maturity August 2014 JPY (¥)	Dec. 31, 2013 Korean won Maturity August 2014 JPY (¥)	Mar. 31, 2014 Mexican peso Maturity December 2014 USD ($)	Dec. 31, 2013 Mexican peso Maturity December 2014 USD ($)	Mar. 31, 2014 Swedish krona Maturity December 2014 EUR (€)	Dec. 31, 2013 Swedish krona Maturity December 2014 EUR (€)	Mar. 31, 2014 US dollar Maturity September 2014 JPY (¥)	Dec. 31, 2013 US dollar Maturity September 2014 JPY (¥)
Derivative [Line Items]
Notional amount of currency derivatives	$ 14.6	$ 19.3	$ 9.7	$ 12.3	¥ 0	¥ 215.0	$ 21.6	£ 2.2	4,763.3	¥ 4,288.9	69.2	$ 29.4	£ 3.0	6,430.5	¥ 5,830.7	96.0	414.5	663.1	€ 4.7	€ 6.6	$ 2.7	64.1	5,115.6	$ 4.2	84.0	5,715.5	$ 4.7	€ 19.9	$ 0	€ 23.6	¥ 224.3	¥ 380.5	$ 11.4	$ 0	€ 25.5	€ 33.7	¥ 3,139.5	¥ 3,209.3