Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Accounts Payable and Accrued Liabilities, Current [Line Items]
Trade accounts payable and accrued purchases	$ 313.2	$ 247.7
Accrued rebates - Medicaid	636.4	563.9
Accrued rebates - Managed care	336.5	318.2
Sales return reserve	141.8	131.7
Accrued bonuses	133.7	150.7
Accrued employee compensation and benefits payable	118.9	109.1
R&D accruals	71.5	88.3
Other accrued expenses	249.8	299.8
Accounts payable and accrued expenses, total	$ 2,001.8	$ 1,909.4