Long-Term Debt (Schedule Of The Spanish Term Loans And Corresponding Fixed Interest Rate Swaps) (Details)			12 Months Ended										12 Months Ended
	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2011 Spanish Term Loans One [Member] EUR (€)		Dec. 31, 2011 Spanish Term Loans Two [Member] EUR (€)		Dec. 31, 2011 Spanish Term Loans Three [Member] EUR (€)		Dec. 31, 2011 Spanish Term Loans Four [Member] EUR (€)		Dec. 31, 2011 Parent Company [Member] USD ($)	Dec. 31, 2010 Parent Company [Member] USD ($)	Dec. 31, 2011 Europe And Mediterranean [Member]	Dec. 31, 2010 Europe And Mediterranean [Member]	Dec. 31, 2011 Europe And Mediterranean [Member] Spanish Term Loan [Member] USD ($)		Dec. 31, 2010 Europe And Mediterranean [Member] Spanish Term Loan [Member] USD ($)
Outstanding borrowings	$ 1,048,900,000	$ 985,500,000									$ 823,600,000	$ 802,900,000			$ 31,400,000	[1]	$ 50,100,000	[1]
Fair value															32,000,000	[1]	51,900,000	[1]
Interest rate - weighted average													5.20%	3.10%	3.70%	[1],[2]	3.70%	[1],[2]
Original Amount			€ 20,000,000		€ 10,000,000		€ 21,000,000		€ 15,000,000
Issuance Date			Feb. 29, 2008		Apr. 30, 2008		Jun. 30, 2008		Sep. 30, 2009
Maturity Date Of Debt Instrument			Feb 2013		Apr 2013		Jun 2013		Aug 2014
Maturity date													Various	Various
Interest rate			Euribor +0.5%		Euribor +0.75%		Euribor +0.75%		Euribor +2.0%
Loan and Interest payable			Semi-annual: Aug and Feb		Semi-annual: Apr and Oct		Quarterly: Mar, Jun, Sept and Dec		Quarterly: Mar, Jun, Sept and Dec Principal payments: Feb and Aug
Interest rate Swap			4.20%	[2]	4.58%	[2]	4.48%	[2]	1.54%	[2]

[1] The terms of the Spanish Term Loans are as follows:(in millions) Original Amount Issuance Date Maturity Date Interest rate Loan and Interest payableInterest rate Swap (2)Term Loan 1 20.0 Euros Feb 2008 Feb 2013 Euribor +0.5% Semi-annual: Aug and Feb4.20%Term Loan 2 10.0 Euros Apr 2008 Apr 2013 Euribor +0.75% Semi-annual: Apr and Oct4.58%Term Loan 3 21.0 Euros Jun 2008 Jun 2013 Euribor +0.75% Quarterly: Mar, Jun, Sept and Dec4.48%Term Loan 4 15.0 Euros Sept 2009 Aug 2014 Euribor +2.0% Quarterly: Mar, Jun, Sept and DecPrincipal payments: Feb and Aug1.54%

[2] The Company entered into fixed interest rate swaps to coincide with the terms and conditions of the term loans that will effectively hedge the variable interest rate with a fixed interest rate