Accounts Receivable (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	$ 861,457,000	$ 686,848,000
Spain [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	90,200,000	78,900,000
Non-current balance included within accounts receivable, net	0	0
Total	90,200,000	78,900,000
Italy [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	102,400,000	94,400,000
Non-current balance included within accounts receivable, net	6,300,000	10,200,000
Total	108,700,000	104,600,000
Portugal [Member]
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	17,200,000	16,600,000
Non-current balance included within accounts receivable, net	15,500,000	7,400,000
Total	$ 32,700,000	$ 24,000,000