Other Financial Information (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Accrued expenses
Compensation	$ 297.8	$ 285.2
Rebates, distributor chargebacks and distributor services	365.5	232.9
Clinical trial costs and grants	255.1	189.5
Interest	170.3	59.1
Royalties, license fees and collaboration agreements	75.9	26.7
Commercial related activities	38.7	56.2
Sales returns	18.8	10.2
Rent	18.1	14.0
Professional services	14.9	7.9
Other taxes	7.9	9.3
Other	113.7	100.1
Total	1,376.7	991.1
Other current liabilities
Deferred tax liability	0.0	131.2
Compensation	55.6	32.6
Sales, use and value added tax	61.1	56.8
Derivative contracts	4.5	2.6
Collaboration agreement upfront payable	40.3	14.0
Other	0.1	4.1
Total	271.0	275.8
Other non-current liabilities
Deferred compensation and long-term incentives	170.5	150.5
Deferred tax liability	377.7	555.6
Other	29.5	49.8
Total	2,041.7	2,136.7
Quanticel
Other current liabilities
Contingent consideration	82.5	0.0
Other non-current liabilities
Contingent consideration	84.2	0.0
Nogra Pharma Limited
Other current liabilities
Contingent consideration	24.9	24.7
Other non-current liabilities
Contingent consideration	1,214.5	1,110.8
Avila Therapeutics, Inc.
Other current liabilities
Contingent consideration	2.0	9.8
Other non-current liabilities
Contingent consideration	94.5	114.2
Gloucester Pharmaceuticals, Inc.
Other non-current liabilities
Contingent consideration	18.9	19.5
Abraxis Bio Science, Inc.
Other non-current liabilities
Contingent consideration	$ 51.9	$ 136.3