Derivatives (Details 2) In Millions, unless otherwise specified	Dec. 31, 2012 Brazilian Real [Member] BRL	Dec. 31, 2011 Brazilian Real [Member] BRL	Dec. 31, 2012 Mexican Peso [Member] MXN	Dec. 31, 2011 Mexican Peso [Member] MXN	Dec. 31, 2012 Euro [Member] EUR (€)	Dec. 31, 2011 Euro [Member] EUR (€)	Dec. 31, 2012 British Pound [Member] GBP (£)	Dec. 31, 2011 British Pound [Member] GBP (£)	Dec. 31, 2012 Indian Rupee [Member] INR	Dec. 31, 2011 Indian Rupee [Member] INR	Dec. 31, 2012 Polish Zloty [Member] PLN	Dec. 31, 2011 Polish Zloty [Member] PLN
Outstanding foreign currency forward contracts not designated as cash flow hedges
Notional amounts	10.8	4.5	220.2	199.0	€ 1.3	€ 7.8	£ 5.4	£ 6.5	19.5	0	12.4	0