Accounts Receivable (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	$ 824,406,000	$ 686,848,000
Spain
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	113,300,000	78,900,000
Non-current balance included within investments and other assets	6,800,000	0
Total	120,100,000	78,900,000
Italy
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	76,100,000	94,400,000
Non-current balance included within investments and other assets	2,400,000	10,200,000
Total	78,500,000	104,600,000
Portugal
Accounts receivable balances on product sales from different countries
Current balance included within accounts receivable, net	10,400,000	16,600,000
Non-current balance included within investments and other assets	8,200,000	7,400,000
Total	$ 18,600,000	$ 24,000,000