Segment Information (Net Third Party Sales Classified Based on Geographic Location of Entity) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		$ 11,760.0	$ 10,967.1	$ 9,362.6
Concentration risk, percentage		10.00%		10.00%	10.00%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		$ 4,683.7	5,385.6	$ 4,848.9
India
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		1,082.6	985.8	1,033.4
The Netherlands
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	[1]	117.5	88.3	66.5
Other foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	[2]	$ 5,876.2	$ 4,507.4	$ 3,413.8
Net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Therapeutic class disclosure threshold		5.00%		5.00%	5.00%

[1] Mylan N.V. has its corporate seat in the Netherlands.

[2] consolidated net sales for the years ended December 31, 2017, 2016 and 2015, respectively.