Other Consolidated Financial Statement Detail (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Accrued Expenses and Other
Revenue-related reserves for discounts and allowances	$ 651.8		$ 651.8		$ 662.7
Current portion of contingent consideration obligations and milestones	556.7		556.7		504.7
Employee compensation and benefits	228.4		228.4		270.8
Royalties and licensing fees	183.7		183.7		167.9
Other	613.4		613.4		635.3
Total accrued expenses and other	2,072.7		2,072.7		2,096.8
Other Income (Expense), Net
Interest income	15.4	$ 4.3	26.6	$ 7.6
Interest expense	(65.9)	(5.8)	(129.2)	(12.5)
Gain (loss) on sales of investments, net	(2.7)	0.3	(1.1)	(1.4)
Foreign exchange gains (losses), net	0.2	(1.5)	2.3	(14.5)
Other, net	(5.5)	(8.2)	(9.9)	(5.1)
Other income (expense), net	(58.5)	$ (10.9)	(111.3)	$ (25.9)
Component of accrued expenses and other
Accrued Expenses and Other
Revenue-related reserves for discounts and allowances	$ 490.5		$ 490.5		$ 518.1