Accounts Receivable (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	$ 661,519,000	$ 584,603,000
Spain [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	73,500,000	68,500,000
Non-current balance included within accounts receivable, net	0	65,500,000
Total	73,500,000	134,000,000
Italy [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	94,600,000	19,400,000
Non-current balance included within accounts receivable, net	13,800,000	48,700,000
Total	108,400,000	68,100,000
Portugal [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	19,600,000	20,600,000
Non-current balance included within accounts receivable, net	7,200,000	12,300,000
Total	26,800,000	32,900,000
Greece [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	2,400,000	4,000,000
Non-current balance included within accounts receivable, net	0	0
Total	$ 2,400,000	$ 4,000,000