Summary of Significant Accounting Policies (Basic And Diluted Earnings Per Ordinary Share Attributable To Mylan N.V.) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Earnings Per Share [Abstract]
Net earnings attributable to Mylan N.V. ordinary shareholders				$ 847.6
Weighted average common shares outstanding	534.5	513.0	[1]	472.2
Weighted average number diluted shares outstanding adjustment, stock-based awards and warrants	2.2	7.5	[1]	25.2
Basic earnings per ordinary share attributable to Mylan N.V. ordinary shareholders	$ 1.30	$ 0.94	[1]	$ 1.80
Net earnings	$ 696.0	$ 480.0		$ 847.7
Total dilutive shares outstanding	536.7	520.5	[1]	497.4
Diluted earnings per ordinary share attributable to Mylan N.V. ordinary shareholders	$ 1.30	$ 0.92	[1]	$ 1.70

[1] As Mylan N.V. is the successor to Mylan Inc., the information set forth above refers to Mylan Inc. for periods prior to February 27, 2015, and to Mylan N.V. on and after February 27, 2015.