Accounts Receivable (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	$ 683,841,000	$ 584,603,000
Spain [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	58,900,000	68,500,000
Non-current balance included within accounts receivable, net	0	65,500,000
Total	58,900,000	134,000,000
Italy [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	90,700,000	19,400,000
Non-current balance included within accounts receivable, net	8,900,000	48,700,000
Total	99,600,000	68,100,000
Portugal [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	26,000,000	20,600,000
Non-current balance included within accounts receivable, net	13,100,000	12,300,000
Total	39,100,000	32,900,000
Greece [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	2,700,000	4,000,000
Total	$ 2,700,000	$ 4,000,000