Long-Term Debt (Schedule Of The Spanish Term Loans And Corresponding Fixed Interest Rate Swaps) (Details)							12 Months Ended
	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2012 Europe and Mediterranean [Member] Spanish Term Loan [Member] USD ($)		Dec. 31, 2011 Europe and Mediterranean [Member] Spanish Term Loan [Member] USD ($)		Dec. 31, 2012 Europe and Mediterranean [Member] Term Loan 1 [Member] EUR (€)		Dec. 31, 2012 Europe and Mediterranean [Member] Term Loan 2 [Member] EUR (€)		Dec. 31, 2012 Europe and Mediterranean [Member] Term Loan 3 [Member] EUR (€)		Dec. 31, 2012 Europe and Mediterranean [Member] Term Loan 4 [Member] EUR (€)
Outstanding borrowings	$ 1,450,100,000	$ 1,048,900,000	$ 14,600,000	[1]	$ 31,400,000	[1]
Fair value			14,800,000	[1]	32,000,000	[1]
Interest rate - weighted average			3.70%	[1]	3.70%	[1]
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							Feb 2013		Apr 2013		Jun 2013		Aug 2014
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.