Indebtedness (Promissory Note Related To Revenue Sharing Obligation) (Details) (USD $)	3 Months Ended
	Jun. 30, 2012
Percentage of milestone payments equal to obligated payments on RSO	20.00%
Number of consecutive years products would need to be withdrawn for safety or efficacy reasons to fully discharge Revenue Sharing Obligation	4
Amount To Be Paid Is Greater Of [Member]
Percent of net sales which equal to quarterly payments on Revenue Sharing Obligation	15.00%
Percentage of 80% of product forecast	15.00%
Percentage of product forecast	80.00%
Minimum Payment [Member]
Revenue Sharing Obligation payments in December 31, 2012	61,300,000
Revenue Sharing Obligation payments in December 31, 2013	86,500,000
Promissory Note Related To Revenue Sharing Obligation Due On December Thirty One Two Thousand Thirty Six [Member]
Principal amount	1,200,000,000
Debt instrument maturity date	Dec. 31, 2036
Quarterly interest rate on Revenue Sharing Obligation	2.295%
Annual effective rate on Revenue Sharing Obligation	9.50%
Debt discount amortization, effective interest rate	14.40%