Accounts Payable and Accrued Expenses (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accounts Payable and Accrued Liabilities, Current [Line Items]
Trade accounts payable and accrued purchases	$ 232.0	$ 208.1
Accrued rebate - Medicaid	477.4	455.6
Accrued rebate - Managed care	209.9	184.9
Sales return reserve	87.8	90.5
Accrued bonuses	38.0	109.0
Accrued employee compensation and benefits payable	101.1	64.5
R&D accruals	78.6	73.5
Provisions for litigation losses and other claims	65.5	118.2
Other accrued expenses	186.9	197.2
Accounts payable and accrued expenses, total	$ 1,477.2	$ 1,501.5