Other Consolidated Financial Statement Detail (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue-related rebates	$ 662.7	$ 483.8	$ 426.2	$ 237.1
Cash Paid During the Year
Interest	39.1	41.2	53.6
Income taxes	1,674.8	1,163.2	643.2
Other Nonoperating Income (Expense) [Abstract]
Interest income	22.1	12.2	8.2
Interest expense	95.5	29.5	31.9
Impairment on investments	0.0	0.0	2.8
Gain (loss) on investments, net	(3.8)	11.8	21.7
Foreign exchange gains (losses), net	(32.7)	(11.6)	(15.2)
Other, net	(13.8)	(8.7)	(14.9)
Total other income (expense), net	(123.7)	(25.8)	$ (34.9)
Accrued Liabilities, Current [Abstract]
Current portion of contingent consideration obligations	504.7	265.5
Employee compensation and benefits	270.8	393.8
Royalties and licensing fees	167.9	172.4
Deferred revenue	55.7	120.9
Other	579.6	505.9
Accrued expenses and other	2,096.8	1,817.7
Other Long-Term Liabilities
Contingent consideration obligations	301.3	200.0
Employee compensation and benefits	235.4	200.7
Other	369.1	249.4
Total other long-term liabilities	905.8	650.1
Component of accrued expenses and other
Revenue-related rebates	$ 518.1	$ 359.2