Litigation (Details) In Millions, unless otherwise specified	3 Months Ended			12 Months Ended	3 Months Ended
	Mar. 31, 2013 Hoechst [Member] USD ($)	Mar. 31, 2013 Hoechst [Member] EUR (€)	Jun. 30, 2011 Hoechst [Member] USD ($)	Dec. 31, 2008 Canada Lease Dispute [Member] USD ($)	Dec. 31, 2011 ITALY EUR (€)	Sep. 30, 2013 ITALY EUR (€)
Loss Contingencies [Line Items]
Compensatory damages and interest		€ 108.0		$ 7.0
Prejudgment interest		54
Decrease in share of co-promotion revenue due to estimated damages and interest	41.5		50.0
Payment in case of any unfavorable determination received					30.7
Limited period for government reimbursement					24 months
Automatic renewal period for the resolution					24 months
Reimbursement limit stated in the resolution					24 months
Loss contingency, expected settlement						33.3
Plaintiffs estimated expert report of damages				2.5
Cost seeks for damages				$ 0.4