Accounts Receivable (Details) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Account receivable balance from different countries
Accounts receivable, net current	$ 581,052,000	$ 605,329,000
Accounts Receivable Net [Member] | Italy [Member]
Account receivable balance from different countries
Accounts receivable, net current	40,200,000	103,200,000
Accounts Receivable Net [Member] | Spain [Member]
Account receivable balance from different countries
Accounts receivable, net current	58,500,000	70,800,000
Accounts Receivable Net [Member] | Portugal [Member]
Account receivable balance from different countries
Accounts receivable, net current	21,000,000	17,800,000
Accounts Receivable Net [Member] | Greece [Member]
Account receivable balance from different countries
Accounts receivable, net current	4,200,000	3,900,000
Investments and Other Assets [Member] | Italy [Member]
Account receivable balance from different countries
Accounts receivable, net non-current	0	14,800,000
Investments and Other Assets [Member] | Spain [Member]
Account receivable balance from different countries
Accounts receivable, net non-current	66,000,000	29,800,000
Investments and Other Assets [Member] | Portugal [Member]
Account receivable balance from different countries
Accounts receivable, net non-current	11,700,000	5,500,000
Investments and Other Assets [Member] | Greece [Member]
Account receivable balance from different countries
Accounts receivable, net non-current	0	0
Italy [Member]
Account receivable balance from different countries
Accounts Receivable, Total	40,200,000	118,000,000
Spain [Member]
Account receivable balance from different countries
Accounts Receivable, Total	124,500,000	100,600,000
Portugal [Member]
Account receivable balance from different countries
Accounts Receivable, Total	32,700,000	23,300,000
Greece [Member]
Account receivable balance from different countries
Accounts Receivable, Total	$ 4,200,000	$ 3,900,000