Debt and Credit Facilities (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended			1 Months Ended		1 Months Ended				1 Months Ended				1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Oct. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011	Oct. 31, 2011 Revolving credit facility [Member]	Oct. 03, 2011 Revolving credit facility [Member]	Oct. 31, 2011 Multicurrency term A facility tranche [Member]	Dec. 31, 2011 Multicurrency term A facility tranche [Member]	Oct. 03, 2011 Multicurrency term A facility tranche [Member]	Dec. 31, 2010 Multicurrency term A facility tranche [Member]	Oct. 31, 2011 Multicurrency term B facility tranche [Member]	Dec. 31, 2011 Multicurrency term B facility tranche [Member]	Oct. 03, 2011 Multicurrency term B facility tranche [Member]	Dec. 31, 2010 Multicurrency term B facility tranche [Member]	Oct. 31, 2011 Dollar component [Member] Multicurrency term B facility tranche [Member]	Dec. 31, 2011 Dollar component [Member] Multicurrency term B facility tranche [Member]	Oct. 31, 2011 Euro component [Member] Multicurrency term B facility tranche [Member]	Dec. 31, 2011 Euro component [Member] Multicurrency term B facility tranche [Member]
Debt and Credit Facilities (Textual) [Abstract]
Unamortized discount												$ 26.5
Line of Credit Facility						700			1,100				1,200
Percentage of Principal Amount of Notes Sold to Investor																98.00%		97.00%
Term period of credit facility					5 years		5 years				7 years
Interest rate description					interest at either LIBOR or base rate plus 375 bps per annum in the case of LIBOR loans and 275 bps per annum in the case of base rate loans, and the euro-denominated tranche bears interest at either EURIBOR or base rate plus 450 bps per annum in the case of EURIBOR loans and 350 bps per annum in the case of base rate loans		interest at either LIBOR or base rate (or an equivalent rate in the relevant currency) plus 250 basis points (bps) per annum in the case of LIBOR loans and 150 bps per annum in the case of base rate loans, provided that the interest rates shall be decreased to 225 bps and 125 bps, respectively, upon achievement of a specified leverage ratio				in the case of a $790 million component, which bears interest at either LIBOR or base rate (or an equivalent rate in the relevant currency) plus 375 bps per annum in the case of LIBOR loans and 300 bps per annum in the case of base rate loans and a euro 300 million component, which bears interest at either LIBOR or base rate (or an equivalent rate in the relevant currency) plus 450 bps per annum in the case of LIBOR loans and 350 bps per annum in the case of base rate loans.
Interest rate in addition to LIBOR or base rate for LIBOR loans					2.50%		2.50%								3.75%		4.50%
Interest rate in addition to LIBOR or base rate for base rate loans					1.50%		1.50%								2.75%		3.50%
Reduction in interest rate for LIBOR loans					2.25%		2.25%
Reduction in interest rate for base rate loans					1.25%		1.25%
Percentage of floor to which LIBOR subjected	1.00%
Recognized pre tax loss		(38.5)	(3.4)
Credit facility amount outstanding		23.5		34.5				989.9		0		1,118.8		0
Additional Debt and Credit Facilities (Textual) [Abstract]
Short-term borrowings		$ 23.5		$ 34.5