Indebtedness (Details) In Thousands, unless otherwise specified	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2012 6.0% Senior notes due 2013 USD ($)	Dec. 31, 2011 6.0% Senior notes due 2013 USD ($)	Dec. 31, 2012 6.875% Senior notes due 2018 USD ($)	Dec. 31, 2011 6.875% Senior notes due 2018 USD ($)	Dec. 31, 2012 Note payable to Fumedica USD ($)	Dec. 31, 2011 Note payable to Fumedica USD ($)	Dec. 31, 2006 Note payable to Fumedica CHF	Dec. 31, 2012 Financing arrangements USD ($)	Dec. 31, 2011 Financing arrangements USD ($)
Current portion:
Current portion of notes payable, line of credit and other financing arrangements	$ 453,379	$ 3,292	$ 450,000	$ 0			$ 3,400	$ 3,300
Non-current portion:
Non-current portion of notes payable, line of credit and other financing arrangements	$ 687,396	$ 1,060,808	$ 0	$ 449,900	$ 586,400	$ 592,300	$ 14,500	$ 16,400	61,400	$ 86,500	$ 2,200