Accounts Payable and Accrued Expenses (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Accounts Payable and Accrued Liabilities, Current [Line Items]
Trade accounts payable and accrued purchases	$ 271.1	$ 259.6
Accrued rebate - Medicaid	438.6	409.8
Accrued rebate - Managed care	185.2	202.8
Sales return reserve	106.3	88.8
Accrued bonuses	101.2	103.0
Accrued employee compensation and benefits payable	78.8	59.3
R&D accruals	60.5	52.7
Other accrued expenses	205.2	194.5
Accounts payable and accrued expenses, total	$ 1,446.9	$ 1,370.5